Unidades de Compresor de Tornillo Rotativo: MODELOS 12 - 101

Formulario 070.
410-IOM (NOV 2015)

INSTALACION - OPERACION - MANTENIMIENTO
Expediente: MANUAL DE SERVICIO - Sección 70
Remplazo: 070.410-IOM (NOV 2014)
Dist: 3, 3a, 3b, 3c
RXF
UNIDADES DE COMPRESOR DE TORNILLO
ROTATIVO
MODELOS 12 – 101
ESTE MANUAL CONTIENE INSTRUCCIONES DE MONTAJE, MONTAJE, ARRANQUE Y

MANTENIMIENTO. LEA DETENIDAMENTE ANTES DE COMENZAR LA INSTALACIÓN. EL NO
SEGUIR ESTAS INSTRUCCIONES PUEDE RESULTAR EN LESIONES PERSONALES O LA
MUERTE, DAÑO A LA UNIDAD O FUNCIONAMIENTO INCORRECTO.
Please check www.jci.com/frick for the latest version of this publication.

070.410-IOM (NOV 2015) RXF ROTARY SCREW COMPRESSOR UNITS
Page 2 INSTALLATION - OPERATION - MAINTENANCE
Table Of Contents
GENERAL INFORMATION OIL FILTER, SPIN-ON (RXF 12 – 50)............................. 24
PREFACE..........................................................................3 OIL FILTER (OF-1) CARTRIDGE STYLE (58 – 101)......24
DESIGN LIMITATIONS......................................................3 COALESCER OIL RETURN STRAINER.........................25
JOB INSPECTION.............................................................3 LIQUID INJECTION STRAINER......................................25
TRANSIT DAMAGE CLAIMS.............................................3 OIL PUMP STRAINER (Optional)....................................25
UNIT IDENTIFICATION.....................................................3 SUCTION CHECK VALVE BYPASS............................... 26
COMPRESSOR IDENTIFICATION...................................4 COALESCER FILTER ELEMENT................................... 26
GEOMETRICAL SWEPT VOLUME TABLE......................4 CHANGING OIL...............................................................26
SUCTION STRAINER CLEANING PROCEDURE..........27
INSTALLATION
DEMAND PUMP DISASSEMBLY....................................27
FOUNDATION................................................................... 5 DEMAND PUMP ASSEMBLY..........................................28
HANDLING and MOVING..................................................5 THRUST BEARING ADJUSTMENT............................. 29
SKID REMOVAL................................................................6 INSTALLATION OF CARBON GRAPHITE BUSHINGS
COMPRESSOR/MOTOR COUPLINGS............................6 ...................................................................................... 29
CH COUPLING..................................................................6 TROUBLESHOOTING THE DEMAND PUMP................30
HOLDING CHARGE and STORAGE.................................7 RECOMMENDED MAINTENANCE PROGRAM.............31
COMPRESSOR OIL.......................................................... 7 MAINTENANCE SCHEDULE.......................................... 31
OIL CHARGE.....................................................................7 VIBRATION ANALYSIS...................................................32
OIL HEATER......................................................................7 OIL QUALITY and ANALYSIS......................................... 32
OIL FILTER(S)...................................................................8 MOTOR BEARINGS........................................................32
SUCTION ISOLATION VALVE MOUNTING.....................8 OPERATING LOG........................................................... 32
THERMOSYPHON OIL COOLING....................................8 TROUBLESHOOTING GUIDE.........................................32
WATER-COOLED OIL COOLING.....................................9 ABNORMAL OPERATION
LIQUID INJECTION OIL COOLING..................................9 ANALYSIS and CORRECTION....................................... 33
DUAL DIP TUBE METHOD..........................................10 PRESSURE TRANSDUCERS - TESTING......................33
ECONOMIZER - HIGH STAGE (OPTIONAL).................10 PRESSURE TRANSDUCERS REPLACEMENT.............33
ELECTRICAL................................................................... 11 SLIDE VALVE TRANSMITTER
VOLTAGE PROTECTION.............................................11 REPLACEMENT - SLIDE STOP......................................35
MOTOR STARTER PACKAGE........................................12 TEMPERATURE SENSOR REPLACEMENT..................35
MINIMUM BURDEN RATINGS........................................13 OIL LEVEL TRANSMITTER REPLACEMENT................35
CONTROL POWER REGULATOR..................................13 TEMPERATURE and/or PRESSURE ADJUSTMENT.....35
OPERATION BARE COMPRESSOR MOUNTING................................35
OPERATION and START-UP INSTRUCTIONS.............14 TROUBLESHOOTING THE COMPRESSOR..................36
OIL SEPARATOR..........................................................36
RXF COMPRESSOR.......................................................14
LIQUID INJECTION OIL COOLING SYSTEM...............36
COMPRESSOR LUBRICATION SYSTEM......................14
HYDRAULIC SYSTEM...................................................37
NO PUMP OIL SYSTEM...............................................14
COMPRESSOR PORT LOCATIONS - RXF 12 - 19........38
COLD-START SYSTEM................................................14
SAE STRAIGHT THREAD O-RING FITTINGS - ASSEMBLY
DEMAND PUMP OIL SYSTEM.....................................15
PROCEDURE FOR RXF 58 - 101.................................40
COMPRESSOR OIL SEPARATION SYSTEM................15
P & I DIAGRAM, LIQUID INJECTION – SINGLE PORT. 41
COMPRESSOR HYDRAULIC SYSTEM..........................15
RXF COOLING OPTIONS (See P & I Diagrams)
CAPACITY CONTROL..................................................15
PLATE OIL COOLER.....................................................42
VOLUMIZER II Vi CONTROL........................................16
WIRING HARNESS - External for Analog Devices.........49
SLIDE VALVE CALIBRATION......................................16
WIRING HARNESS - AC to Heaters and Valves (External).50
COMPRESSOR OIL COOLING SYSTEMS.....................17
SINGLE-PORT LIQUID INJECTION.............................17 INSTALLATION OF ELECTRONIC EQUIPMENT
DUAL-PORT LIQUID INJECTION.................................17 WIRE SIZING...................................................................51
QUANTUM™HD EZ-COOL™ LIQUID INJECTION ADJUST- VOLTAGE SOURCE........................................................51
MENT PROCEDURE................................................17 GROUNDING...................................................................52
OPERATION OF DANFOSS VFD APPLICATIONS.......................................................52
LIQUID INJECTION VALVE..................................... 18 CONDUIT.........................................................................53
THERMOSYPHON OIL COOLING...............................21 WIRING PRACTICES......................................................53
INITIAL START-UP PROCEDURE..................................21 COMMUNICATIONS........................................................55
NORMAL START-UP PROCEDURE...............................22 UPS POWER AND QUANTUM™ HD PANELS................55
VFD SKIP FREQUENCIES..............................................22
FORMS
MAINTENANCE OPERATING LOG SHEET.............................................. 56
NORMAL MAINTENANCE OPERATIONS......................23 RXF COMPRESSOR PRESTART CHECKLIST..............57
GENERAL MAINTENANCE.............................................23 VIBRATION DATA SHEET..............................................62
COMPRESSOR SHUTDOWN and START-UP...............23
COMPRESSOR/MOTOR SERVICING............................24 INDEX..............................................................................65
GENERAL INSTRUCTIONS FOR REPLACING
COMPRESSOR UNIT COMPONENTS.........................24
RXF ROTARY SCREW COMPRESSOR UNITS 070.410-IOM (NOV 2015)
GENERAL INFORMATION Page 3
General Information JOB INSPECTION

Immediately upon arrival examine all crates, boxes, and
PREFACE exposed compressor and component surfaces for damage.
This manual has been prepared to acquaint the owner and Unpack all items and check against shipping lists for any
service person with the INSTALLATION, OPERATION, possible shortage. Examine all items for damage in transit.
and MAINTENANCE procedures as recommended by
Frick for RXF Rotary Screw Compressor Units. TRANSIT DAMAGE CLAIMS
It is most important that these units be properly applied to All claims must be made by consignee. This is an ICC re
an adequately controlled refrigeration system. Your quirement. Request immediate inspection by the agent of the
authorized Frick representative should be consulted for carrier and be sure the proper claim forms are executed.
expert guidance in this determination.
Contact Johnson Controls-Frick, Sales Administration
Proper performance and continued satisfaction with these Department, in Waynesboro, PA to report damage or
units is dependent upon: short-age claims.
CORRECT INSTALLATION
UNIT IDENTIFICATION
PROPER OPERATION Each compressor unit has two identification data plates. The
REGULAR, SYSTEMATIC PLANNED MAINTENANCE unit data plate containing unit model, serial number and Frick
sales order number is mounted on the control panel support
To ensure correct installation and application, the bracket. The compressor data plate containing compressor
equipment must be properly selected and connected to a model and serial number is mounted on the compressor body.
properly de-signed and installed system. The Engineering
plans, piping layouts, etc. must be detailed in accordance
with the best practices and local codes, such as those NOTICE
outlined in ASHRAE literature. When inquiring about the compressor or unit, or order-ing
repair parts, provide the MODEL, SERIAL, and FRICK
A refrigeration compressor is a VAPOR PUMP. To be certain
SALES ORDER NUMBERS from these data plates.
that it is not being subjected to liquid refrigerant carryover, it is
necessary that refrigerant controls are carefully selected and
in good operating condition; the piping is properly sized and
traps, if necessary, are correctly arranged; the suction line
has an accumulator or slugging protection; that load surges
are known and provisions made for control; operating cycles
and defrosting periods are reasonable; oil return is controlled;
and that high side condenser units control head pressures
and temperatures are within system and compres-sor design
limits.
It is recommended that the entering vapor temperature to
the compressor be superheated to 10°F above the
refrigerant saturation temperature to ensure that all
refrigerant at the compressor suction is in the vapor state.
DESIGN LIMITATIONS
The compressor units are designed for operation within
the pressure and temperature limits as shown in Frick
Publica-tion 070.410-SED.
UNIT DATA PLATE
SAFETY PRECAUTION DEFINITIONS

Indicates an imminently hazardous situation which, if not avoided, will result in death or
DANGER serious injury.
Indicates a potentially hazardous situation or practice which, if not avoided, will result in death
WARNING or serious injury.
Indicates a potentially hazardous situation or practice which, if not avoided, will result in
CAUTION damage to equipment and/or minor injury.
NOTICE Indicates an operating procedure, practice, etc., or portion thereof which is essential to highlight.
Page 4 GENERAL INFORMATION
COMPRESSOR IDENTIFICATION
COMPRESSOR DATA PLATE

Rotary screw compressor serial numbers are defined by the
following information:
EXAMPLE: 10240A90000015Z
GLOBAL ADDITIONAL
PLANT DECADE MONTH YEAR SEQ NO. REMARKS
1024 0 A 9 0000015 Z
Month: A = JAN, B = FEB, C = MAR, D = APR, E = MAY, F =
JUN, G = JUL, H = AUG, K = SEP, L = OCT, M = NOV, N = DEC.
Additional Remarks: R = Remanufactured; Z = Deviation from
Standard Configuration.
GEOMETRICAL SWEPT VOLUME TABLE

Geometrical
Rotor Max Swept Volume
Compressor Diameter Rotor Speed Drive Shaft End CFM M³/H
Model mm L/D RPM Ft³/ Rev M³/Rev 3550 RPM 2950 RPM
XJS/XJF 95M 95 1.4 5,772 0.02513 0.000711 89 126
XJS/XJF 95L 95 1.4 4,661 0.03112 0.000881 110 156
XJS/XJF 95S 95 1.4 3,600 0.04086 0.001156 145 205
XJS/XJF 120M 120 1.4 5,772 0.05065 0.001433 180 254
XJS/XJF 120L 120 1.4 4,661 0.06272 0.001775 223 314
XJS/XJF 120S 120 1.4 3,600 0.08234 0.002330 292 412
XJF 151A 151 1.6 6,297 0.09623 0.002723 342 482
XJF 151M 151 1.6 5,332 0.11366 0.003217 403 569
XJF 151L 151 1.6 4,306 0.14075 0.003983 500 705
XJF 151N 151 1.6 3,600 0.16833 0.004764 598 843
INSTALLATION Page
5
disconnected from the compressor. See table for

Installation Allowable Flange Loads.
FOUNDATION ALLOWABLE FLANGE LOADS
NOZ. MOMENTS (ft-lbf) LOAD (lbf)
NOTICE SIZE
NPS
AXIAL VERT. LAT. AXIAL VERT. LAT.
MR MC ML P VC VL
Allow space for servicing the unit per factory drawings. 1 25 25 25 50 50 50
1.25 25 25 25 50 50 50
The first requirement of the compressor foundation is that
1.5 50 40 40 100 75 75
it must be able to support the weight of the compressor
2 100 70 70 150 125 125
package including coolers, oil, and refrigerant charge.
3 250 175 175 225 250 250
Screw compressors are capable of converting large
quantities of shaft power into gas compression in a 4 400 200 200 300 400 400
relatively small space and a mass is required to effectively 5 425 400 400 400 450 450
dampen these relatively high frequency vibrations. 6 1,000 750 750 650 650 650
8 1,500 1,000 1,000 1,500 900 900
Firmly anchoring the compressor package to a suitable 10 1,500 1,200 1,200 1,500 1,200 1,200
foundation by proper application of grout and elimination of 12 1,500 1,500 1,500 1,500 1,500 1,500
piping stress imposed on the compressor is the best insur- 14 2,000 1,800 1,800 1,700 2,000 2,000
ance for a trouble free installation. Use only the certified
general arrangement drawings from Frick to determine the
®
Proper foundations and proper installation methods are
mounting foot locations and to allow for recommended clear- vital; and even then, sound attenuation or noise curtains
ances around the unit for ease of operation and servicing. may be required to reduce noise to desired levels.
Foundations must be in compliance with local building codes For more detailed information on Screw Compressor
and materials should be of industrial quality. Founda-tions, please request Frick publication 070.210-IB.
The floor shall be a minimum of 6 inches of reinforced con-
crete and housekeeping pads are recommended. Anchor HANDLING and MOVING
bolts are required to firmly tie the unit to the floor. Once the
unit is rigged into place (See HANDLING and MOVING), the
feet must then be shimmed in order to level the unit. The WARNING
shims should be placed to position the feet roughly one inch This screw compressor package may be top-heavy.
above the housekeeping pad to allow room for grouting. An Use caution in rigging and handling.
expansion-type epoxy grout must be worked under all areas
of the base with no voids and be allowed to settle with a slight RXF 12–50 units can be moved with a forklift or with rigging
outward slope so oil and water can run off of the base. and a crane. The recommended method is to insert lengths of
2" pipe through the base tubing (see Figure 1 below).
When installing on a steel base, the following guidelines
should be implemented to properly design the system base:
1. Use I-beams in the skid where the screw compressor will CAUTION
be attached to the system base. They shall run parallel to the Spreader bars should be used on both the length
package feet and support the feet for their full length. and width of the package to prevent bending oil
2. The compressor unit feet shall be continuously welded lines and damage to the package. CAUTION must
to the system base at all points of contact. also be used in locating the lifting ring. Appropriate
adjustment in the lifting point should be made to
3. The compressor unit shall not be mounted on vibration compensate for motor weight. Adjustment of the
isolators in order to hold down package vibration levels. lifting point must also be made for any additions to
4. The customer’s foundation for the system base shall fully the standard package such as an external oil cooler,
support the system base under all areas, but most certainly etc., as the center of balance will be affected.
under the I-beams that support the compressor package.
When installing on the upper floors of buildings, extra precau-
tions should be taken to prevent normal package vibration
from being transferred to the building structure. It may be
necessary to use rubber or spring isolators, or a combination
of both, to prevent the transmission of compressor vibration
directly to the structure. However, this may increase package
vibration levels because the compressor is not in contact with
any damping mass. The mounting and support of suction and
discharge lines is also very important. Rubber or spring pipe
supports may be required to avoid exciting the build-ing
structure at any pipe supports close to the compressor
package. It is best to employ a vibration expert in the design
of a proper mounting arrangement.
In any screw compressor installation, suction and discharge
lines shall be supported in pipe hangers (preferably within 2
feet of vertical pipe run) so that the lines won’t move if
Figure 1 - RXF 12 – 50
Page 6 INSTALLATION
The unit can be moved with a forklift by forking through the unit mounting supports to the skid before lowering the unit
base tubing. NEVER MOVE THE UNIT BY PUSHING onto the mounting surface.
OR FORKING AGAINST THE SEPARATOR SHELL OR
ITS MOUNTING SUPPORTS. If the unit is skidded into place, remove the cross members
from the skid and remove the nuts anchoring the unit to the
RXF 58 – 101 units can be moved with rigging, using a skid. Using a 10-ton jack under the separator, raise the unit at
crane or forklift by hooking into three lifting points on the the compressor end until it clears the two mounting bolts.
oil sepa-rator. See Figure 2. Spread the skid to clear the unit mounting support, then lower
the unit to the surface. Repeat procedure on opposite end.
CAUTION COMPRESSOR/MOTOR COUPLINGS

Spreader bars may be required on both the length RXF units are arranged for direct motor drive and include a
and width of the package to prevent bending oil flexible drive coupling to connect the compressor to the motor.
lines and damage to the package. CAUTION must
also be used in locating the lifting ring. Appropriate CH COUPLING
adjustment in the lifting point should be made to
compensate for motor weight. Adjustment of the The T. B. Woods Elastomeric Type
lifting point must also be made for any additions to CH Coupling is used in most
the standard package such as an external oil cooler, applica-tions. This coupling
etc., as the center of balance will be affected. consists of two drive hubs and a
gear-type Hytrel, EDPM, or neo-
prene drive spacer. The split
hub is clamped to the shaft by
tightening the clamp screws.
Torque is transmitted from the
motor through the elastomeric gear
which floats freely between the
hubs. Because of the use of the motor/compressor adapter
housing on the RXF, no field alignment is necessary.
WARNING
It is mandatory that the coupling center be removed and
the direction of motor rotation be confirmed before run-
ning the compressor. Proper rotation of the compressor
shaft is clockwise looking at the end of the compressor
shaft. Failure to follow this step could result in backward
compressor rotation which can cause compressor failure
or explosion of the suction housing.
Figure 2 - RXF 58 – 101 1. Inspect the shaft of the motor and compressor to ensure
that no nicks, grease, or foreign matter is present.
The unit can be moved with a forklift by forking under the
wooden skid (if provided), or it can be skidded into place 2. Inspect the bores in the coupling hubs to make sure that
with pinch bars by pushing against the skid. NEVER they are free of burrs, dirt, and grit.
MOVE THE UNIT BY PUSHING OR FORKING AGAINST THE
SEPARATOR SHELL OR ITS MOUNTING SUPPORTS. 3. Check that the keys fit the hubs and shafts properly.
4. Slide one hub onto each shaft as far as possible. It may
SKID REMOVAL
be necessary to use a screwdriver as a wedge in the slot
to open the bore before the hubs will slide on the shafts.
CAUTION 5. Hold the elastomeric gear between the hubs and slide both
This screw compressor package may be top-heavy. hubs onto the gear to fully engage the mating teeth. Center
Use caution to prevent unit from turning over. the gear and hub assembly so there is equal engagement on
both shafts. Adjust the space between hubs as specified in
If the unit is rigged into place, the wooden skid can be re- the CH Coupling Data Table below. SEE NOTICE:
moved by taking off the nuts and bolts that are fastening the
CH COUPLING DATA TABLE

Coupling Hub
CH Between Shaft Spacing Shaft Engagement Face Clamp Bolt Keyway
Series Min. Max. Min. Max. Spacing Torque (Dry) Size Setscrew Torque Size
Size In. mm In. mm In. mm In. mm In. mm Ft-Lb Nm Ft-Lb Nm UNC
6 2 50.8 2¾ 69.9 1 25.4 1ZB\zn 49.2 7/8 22.2 15 20.3 1/4-20 UNC 13 17.6 5/16-18
7 2B\zn 58.7 3M\zn 87.3 1 25.4 2C\zn 55.6 1Z\zn 27.0 30 40.7 5/16-24 UNF 13 17.6 5/16-18
8 2>\zn 65.1 4 101.6 1Z\zn 27.0 2½ 63.5 1Z\, 28.6 55 74.6 3/8-24 UNF 13 17.6 5/16-18
9 3Z\zn 77.8 4B\, 117.5 1M\zn 36.5 3 76.2 1M\zn 36.5 55 74.6 3/8-24 UNF 13 17.6 5/16-18
10 3>\zn 90.5 5¼ 133.4 1ZZ\zn 42.9 3½ 88.9 1ZZ\zn 42.9 130 176.3 1/2-20 UNF 13 17.6 5/16-18
INSTALLATION Page
7
NOTICE RXF
BASIC
CHARGE
ADDITIONAL FOR
OIL COOLER
MODEL (gallon) (gallon)
The center section will be a little loose between the
hubs. This allows for growth during operation. 12 – 19 10 1
24 – 50 11 1
6. Torque the clamping bolts in both hubs to the torque value 58, 68 25 3½
given in the CH Data Table. DO NOT USE ANY LUBRICANT 85, 101 36 3½
ON THESE BOLTS.
Add oil by attaching the end of a suitable pressure type
HOLDING CHARGE and STORAGE hose to the oil drain valve (see Figure 3), located under
the oil separator. Using a pressure-type pump and the
Each compressor unit is pressure and leak tested at the John- recom-mended Frick® oil, open the drain valve and pump
son Controls-Frick factory and then thoroughly evacuated and oil into the separator.
charged with dry nitrogen to ensure the integrity of the unit
during shipping and short term storage prior to installation.
NOTICE
CAUTION Evacuation of the oil separator will assist the flow of oil
into the unit. Also, fill slowly because oil will fill up in
Care must be taken when entering the unit to ensure the separator faster than it shows in the sight glass.
that the nitrogen charge is safely released.
Oil distillers and similar equipment which trap oil must be
filled prior to unit operation to normal design outlet levels.
WARNING The same pump used to charge the unit may be used for
filling these auxiliary oil reservoirs.
Holding charge shipping gauges on separator and
external oil cooler are rated for 30 PSIG and are for The sight glass located near the bottom of the separator
checking the shipping charge only. They must be re- shell at the discharge end should remain empty when the
moved before pressure testing the system and unit is in operation. The presence of oil in this end of the
before charging the system with refrigerant. Failure vessel during operation indicates liquid carryover or
to remove these gauges may result in catastrophic malfunction of the oil return.
failure of the gauge and uncontrolled release of
refrigerant resulting in serious injury or death.
All units must be kept in a clean, dry location to prevent
corrosion damage. Reasonable consideration must be
given to proper care for the solid-state components of the
mi-croprocessor.
Units which will be stored for more than two months must
have the nitrogen charge checked periodically. Contact
Johnson Controls-Frick for long term storage procedure.
COMPRESSOR OIL
WARNING
DO NOT MIX OILS of different brands, manufacturers,
or types. Mixing of oils may cause excessive oil Figure 3 - Oil Drain Valve
foaming, nuisance oil level cutouts, oil pressure loss,
gas or oil leakage and catastrophic compressor failure. OIL HEATER
Standard units are equipped with 500 watt oil heaters, which
NOTICE provide sufficient heat to maintain the oil temperature for most
indoor applications during shutdown cycles and to permit safe
The oil charge shipped with the unit is the best start-up. RXF 12–50 use one heater while mod-els 58–101
suited lubricant for the conditions specified at the use two. Should additional heating capacity be required
time of purchase. If there is any doubt due to the because of an unusual environmental condition, contact
refrigerant, operating pressures, or temperatures; Johnson Controls-Frick. The heater is energized only when
refer to Frick publication 160.802-SPC for guidance. the unit is not in operation.
OIL CHARGE
WARNING
The normal charging level is midway in the top sight
Do not energize the heater when there is no oil in the unit,
glass located midway along the oil separator shell.
otherwise the heater will burn out. The oil heater will be
Normal operating level is between the top sight glass and
energized whenever 120 volt control power is applied to
bottom sight glass. Oil charge quantities are as follows:
the unit and the compressor is not running, unless the 16
amp circuit breaker in micro enclosure is turned off (or 15
amp fuse (1FU) in the Plus panel is removed).
Page 8 INSTALLATION
OIL FILTER(S) The liquid level in the refrigerant source must be 6 to 8 feet
above the center of the oil cooler.
NOTICE 2. A shell and tube or plate-type oil cooler with a minimum

300 psi design working pressure on both the oil and refrig-
Use of filter elements other than Frick may cause erant sides.
war-ranty claim to be denied.
Due to the many variations in refrigeration system design
The oil filter(s) and coalescer filter element(s) shipped with and physical layout, several systems for assuring the
the unit are best suited to ensure proper filtration and op- above two criteria are possible.
eration of the system.
INSTALLATION: The plate-type thermosyphon oil cooler
SUCTION ISOLATION VALVE MOUNTING with oil side piping and a thermostatically controlled mixing
valve are factory mounted and piped. See Figure 5.
The suction isolation valve is shipped loose from the factory,
so it can be installed at various positions within the suction
line piping to the compressor. DO NOT INSTALL the valve at
the compressor suction with flow against the cone/button
(see Figure 4 TOP). When the isolation valve is installed in
this position, uneven flow is generated across the suction
check valve which is mounted at the inlet to the compressor.
This uneven flow causes the disks in the check valve to strike
against the stop pin, and eventually damage the internals of
the check valve. If the isolation valve is mounted at the
compressor suction, DO INSTALL with flow across the cone/
button (see Figure 4 BOTTOM). Please design your system
piping accordingly.
CAUTION
After removing the suction sealing disc, confirm that
the check valve hinge pin is in the vertical position!
If the hinge pin is not in a vertical position, then
failure of the check valve may occur. Figure 5 - Thermosyphon Oil-Cooled System
1. Thermosyphon oil cooler is supplied with oil side piped
INCORRECT! to the compressor unit and socket weld ends supplied on
the refrigerant side.
2. A refrigerant-side safety valve is required when refriger-
ant isolation valves are installed between the cooler and
thermosyphon receiver. If no valves are used between the
cooler and thermosyphon receiver, the safety valve on the
thermosyphon receiver must be sized to handle the
volume of both vessels. Then, the safety valve on the
cooler vent (liquid refrigerant side) can be eliminated.
3. System receiver must be mounted below thermosyphon
receiver level in this arrangement.
4. The refrigerant source, thermosyphon or system
receiver, should be in close proximity to the unit to
minimize piping pressure drop.
5. The liquid level in the refrigerant source must not be
less than 6 feet above the center of the oil cooler.
6. An angle valve should be installed in the piping before the
CORRECT! thermosyphon oil cooler to balance the thermosyphon sys-
tem. Sight glasses should also be installed at the TSOC inlet
and outlet to aid in troubleshooting. The factory-mounted
Figure 4 - Suction Isolation Valve Mounting plate-type thermosyphon oil cooler requires a refrigerant-side
drain valve to be provided and installed by the customer.
THERMOSYPHON OIL COOLING
The component and piping arrangement shown in Figure 5 is
EQUIPMENT: The basic equipment required for a thermo intended only to illustrate the operating principles of thermo-
syphon system consists of: syphon oil cooling. Other component layouts may be better
suited to a specific installation. Refer to publication 070.900-E
1. A source of liquid refrigerant at condensing pressure for additional information on Thermosyphon Oil Cooling.
and temperature located in close proximity to the unit to
minimize piping pressure drop.
INSTALLATION Page 9
WATER-COOLED OIL COOLING Fx Fy Fz Mx My Mz

The plate-type water-cooled oil cooler is mounted on the (lbf) (lbf) (lbf) (lbfft) (lbfft) (lbfft)
unit complete with all oil piping. The customer must supply ANHP52 202 13 13 57 32 32
adequate water to the oil cooler. ANHP76 292 22 22 103 58 58
Johnson Controls-Frick recommends a closed-loop

system for the waterside of the oil cooler. Careful attention
to water treatment is essential to ensure adequate life of
the cooler if cooling tower water is used. It is imperative
that the con-dition of cooling water and closed-loop fluids
be analyzed regularly and as necessary and maintained at
a pH of 7.4, but not less than 6.0 for proper heat
exchanger life. After initial start-up of the compressor
package, the strainer at the inlet of the oil cooler should be
cleaned several times in the first 24 hours of operation.
In some applications, the plate-type oil cooler may be sub-
jected to severe water conditions, including high
temperature and/or hard water conditions. This causes
accelerated scal-ing rates which will penalize the
performance of the heat exchanger. A chemical cleaning
process will extend the life of the heat exchanger. It is Figure 6 - Application of heat-sink paste before welding
important to establish regular cleaning schedules.
Cleaning: A 3% solution of Phosphoric or Oxalic Acid is rec-
ommended. Other cleaning solutions can be obtained from
your local distributor, but they must be suitable for stainless
steel. The oil cooler may be cleaned in place by back flushing
with recommended solution for approximately 30 minutes.
After back flushing, rinse the heat exchanger with fresh water
to remove any remaining cleaning solution.
FIELD WELDING INSTRUCTIONS FOR TSOC AND WCOC:
The heat exchanger body is constructed in stainless steel,
while the stub connections are carbon steel. The highly
polished stub connections can give the appearance of stain-
less steel. The following are requirements for welding to the
socket weld fittings on Plate heat exchangers:
1. Use a heat-sink paste around the base of the
connection. These are available from a number of Figure 7 - Maximum static forces and moments
suppliers of welding materials.
LIQUID INJECTION OIL COOLING
CAUTION The liquid injection system provided on the unit is
Heat-sink paste must be applied around the base of self-con tained but requires the connection of the liquid
the connection prior to welding. See Figure 6. line. Liquid line sizes and the additional receiver volume
(quantity of refrigerant required for 5 minutes of liquid
2. Two-pass welding is required; stagger start/stop region; injection oil cool-ing) are given in the following table:
welding procedure in accordance with ASME Section 9.
RXF LIQ. LINE SIZE* 5 MIN LIQUID
3. If possible use gas protection, when welding, to avoid REFRIG PIPE TUBING SUPPLY VOLUME
oxidation of the surface. As it is rarely possible to clean MODEL
SCH 80 OD POUNDS CU. FT
the root side of the weld by grinding or brushing to remove R-717 12-19 3/8 – 12 0.3
the root oxide, it is optimal to use root gas. HIGH 24-50 1/2 – 33 0.9
STAGE 58-101 3/4 – 65 1.8
4. Welding should occur in two segments, from 6:00 to 12:00.
R-507 12-19 3/8 1/2 24 0.4
The maximum intersegment temperature should be 350°F.
HIGH 24-50 3/8 1/2 60 1.0
Temperature should be verified with temperature STAGE 58-101 1/2 5/8 99 1.6
indicating crayon or equivalent. 12-19 3/8 – 3 0.1
R-717
5. The fitting may be cooled with forced air to reduce the 24-50 3/8 – 8 0.2
BOOSTER
temperature of the fitting to 350°F or lower, prior to 58-101 3/8 – 14 0.4
welding the second segment. 12-19
R-507 No oil heat of rejection
24-50
The maximum connection static forces and moments for BOOSTER
58-101
at this condition
Alfa Nova heat exchangers are listed in the following * 100 ft. liquid line. For longer runs, increase line size accordingly.
table.Keep these values in mind when designing your
system. It is also recommended to minimize connection CONDITIONS: High Stage at 0°F Evap, and 95°F Cond, 10°F
loads when designing piping systems. Also see Figure 7. suction superheat; Booster at -40°F Evap, 95°F Cond, 20°F
Page 10 INSTALLATION
Intermediate, and 10°F suction superheat; R-507 tion. Because of this, an output from the microprocessor is
unloaded slide valve. generally used to turn off the supply of flashing liquid on a
shell and coil or DX economizer when the capacity falls below
High-stage compressor units may be supplied with single- approximately 60%-70% (85%-90% slide valve position). This
port (low Vi, side, or closed thread) or dual-port (low Vi is done to improve compressor operating efficiency. Please
and high Vi), liquid injection oil cooling. Single port will be note however that shell and coil and DX economizers can be
furnished for low compression ratio operation and dual used at low compressor capacities in cases where efficien cy
port for high compres-sion ratio operation. Booster is not as important as ensuring that the liquid supply is
compressor units use single-port (High Vi), liquid injection subcooled. In such cases, the economizer liquid solenoid can
oil cooling due to the typically lower compression ratios. be left open whenever the compressor is running.
The control system on high-stage units with dual-port, liquid Due to the tendency of the port pressure to fall with de
injection oil cooling switches the liquid refrigerant supply to creasing compressor capacity, a back- pressure regulator
the high port when the compressor is operating at higher valve (BPR) is generally required on a Flash Economizer
compression ratios (3.5 Vi and above) for best efficiency. System (Figure 11) in order to maintain some preset pressure
difference between the subcooled liquid in the flash vessel
Where low compression ratios (low condensing pressures)
and the evaporators. If the back-pressure regulator valve is
are anticipated, thermosyphon or water-cooled oil cooling
not used on a flash economizer, it is possible that no pressure
should be used.
difference will exist to drive liquid from the flash vessel to the
evaporators, since the flash vessel will be at suction pressure.
CAUTION In cases where wide swings in pressure are anticipated in the
flash economizer vessel, it may be necessary to add an outlet
It is imperative that an uninterrupted high-pressure pressure regulator to the flash vessel outlet to avoid
liquid refrigerant be provided to the injection system at overpressurizing the economizer port, which could result in
all times. Two items of EXTREME IMPORTANCE are the motor overload. Example: A system feeding liquid to the flash
design of the receiver/liquid injection supply and the vessel in batches.
size of the liquid line. It is recommended that the
receiver be oversized sufficiently to retain a 5-minute The recommended economizer systems are shown in
supply of refrigerant for oil cooling. The evaporator Figures 9 – 12. Notice that in all systems there must be a
supply must be secondary to this consideration. Failure strainer and a check valve between the economizer vessel
to follow these requirements causes wire draw which and the economizer port on the compressor. The strainer
can result in damage to the expansion valve, loss of oil prevents dirt from passing into the compressor and the
cooling, and intermittant oil cooling. One method of check valve prevents oil from flowing from the compressor
accomplishing this is described below. unit to the economizer vessel during shutdown.
DUAL DIP TUBE METHOD

The dual dip tube method uses two dip tubes in the receiv
CAUTION
Other than the isolation valve needed for strainer cleaning,
er. The liquid injection tube is below the evaporator tube to
it is essential that the strainer be the last device in the
assure continued oil cooling when the receiver level is low.
See Figure 8. economizer line before the compressor. The strainer must
be strong enough to handle the gas pulsations from the
compressor. Johnson Controls-Frick recommends an R/S
or Hansen strainer. Also, piston-type check valves are
recommended for installation in the economizer line, as
opposed to disc-type check valves. The latter are more
prone to gas-pulsation-induced failure. The isolation and
check valves and strainer should be located as closely as
possible to the compressor, preferably within a few feet.
Figure 8
ECONOMIZER - HIGH STAGE (OPTIONAL)

The economizer option provides an increase in system capac-
ity and efficiency by subcooling liquid from the condenser
through a heat exchanger or flash tank before it goes to the
evaporator. The subcooling is provided by flashing liquid in Figure 9 - Shell And Coil Economizer System
the economizer cooler to an intermediate pressure level.The
intermediate pressure is provided by a port located part way For refrigeration plants employing multiple compressors on a
down the compression process on the screw compressor. common economizing vessel, regardless of economizer type,
each compressor must have a back-pressure regulat ing
As the screw compressor unloads, the economizer port will valve in order to balance the economizer load, or gas flow,
drop in pressure level, eventually being fully open to suc- between compressors. The problem of balancing load
INSTALLATION Page
11
becomes most important when one or more compressors If the economizer pressure fluctuates, then the
run at partial load, exposing the economizer port to suction economizer pressure can be relayed to the control panel
pressure. In the case of a flash vessel, there is no need for via a pressure transducer to an analog input. This is the
the redundancy of a back-pressure regulating valve on the purpose of the pow-ermizer option. If the powermizer
vessel and each of the multiple compressors. Omit the option is selected, Frick provides a factory mounted and
BPR valve on the flash economizer vessel and use one on wired pressure transducer on the economizer inlet.
each compressor, as shown in Figure 12.
ELECTRICAL
NOTICE
Before beginning electrical installation, read the
instruc-tions in the section "Proper Installation of
Electronic Equipment" at the back of this manual.
RXF units are supplied with a Quantum™HD control system.
Care must be taken that the controls are not exposed to
physical damage during handling, storage, and installation.
The single-box control door must be kept tightly closed to
prevent moisture and foreign matter from entry.
Figure 10 - Direct Expansion Economizer System
WARNING
Customer connections are made in the Quantum ™HD
control panel* mounted on the unit. The electrical
enclosures should be kept tightly closed whenever work is
not be-ing done inside. * Or starter panel (if provided).
VOLTAGE PROTECTION
NOTICE
Johnson Controls-Frick® does not advise nor
Figure 11 - Flash Economizer System support the use of UPS power systems in front of
the Quantum™HD panel.
With a UPS power system providing shutdown protection
for the Quantum™HD, the panel may not see the loss of
the 3-phase voltage on the motor because the UPS could
prevent the motor starter contactor from dropping out.
With the starter contactor still energized, the compressor
auxiliary will continue to feed an “Okay” signal to the
panel. This will allow the motor to be subjected to a fault
condition on the 3-phase bus. Some fault scenarios are:
1. The 3-phase bus has power “on” and “off” in a continu-
ous cyclic manner which may cause the motor to overheat
due to repeated excessive in-rush currents.
Figure 12 - Multiple Compressor Flash Economizer System
2. Motor cycling may damage the coupling or cause other
ECONOMIZER VI CONTROL mechanical damage due to the repeated high torque
motor “bumps”.
Based on suction and discharge pressures, the control panel
calculates the proper volume ratio (Vi) for the compressor. 3. Prolonged low voltage may cause the motor to stall and
However, additional refrigerant vapor entering through the overheat before the motor contactor is manually turned off.
economizer port affects this calculation. If the addition of
economizer gas is not taken into acount the compressor will Under normal conditions, the loss of 3-phase power will
over compress. This uses more energy than necessary. shut down the Quantum™HD panel, and it will restart upon
power return. If the panel was in:
Quantum control panels are capable of adjusting the Vi to • Auto – Compressor motor will return to running as pro-
compensate for economized compressors. If the grammed.
economizer pressure is fixed, a regulating valve may be
used. In this case, the economizer operating pressure can • Remote – The external controller would reinitialize the
simply be entered into the control panel. panel and proceed to run as required.
Page 12 INSTALLATION
• Manual – The compressor will have to be restarted

manually after the 3-phase bus fault has been cleared.
If the local power distribution system is unstable or prone to
problems, there are other recommendations to satisfy these
problems. If power spikes or low or high line voltages are the
problem, then we recommend the use of a Sola ® constant
voltage (CV) transformer with a line suppression feature. If a
phase loss occurs, then you will typically get a high motor
amp shutdown. If problems continue to exist, then an
examination of the plant’s power factor may be in order.
Unless careful design failure analysis is considered in the
implementation of power systems, the alternative solutions
provide a safer and less expensive implementation. In either
case, only one Sola® may be used per compressor. Each
compressor needs to be individually isolated from each other
through a dedicated control transformer. Sharing a common
control power source is an invitation for ground loops and the
subsequent unexplainable problems.
MOTOR STARTER PACKAGE
CAUTION
When starting at full voltage or across-the-line, a
shunting device must be installed or the Analog I/O
board in the Quantum™HD panel may be severely Figure 13 - Starter Wiring Diagram
dam-aged at start-up. See Figure 13.
Motor starter and interlock wiring requirements are shown in
the diagram, Figure 12. All of the equipment shown is sup-
plied by the installer unless a starter package is purchased
separately from Frick. Starter packages should consist of:
1. The compressor motor starter of the specified horse-
power and voltage for the starting method specified
(across-the-line, autotransformer, wye-delta or solid-
state).
NOTICE
If starting methods other than across-the-line are
desired, a motor/compressor torque analysis must
be done to ensure sufficient starting torque is
available. Contact Frick if assistance is required.
2. If specified, the starter package can be supplied as a com-
bination starter with circuit breaker disconnect. However, the
motor overcurrent protection/disconnection device can be
applied by others, usually as a part of an electrical power
distribution board.
3. A 3.0 KVA control power transformer (CPT) to supply
120 volt control power to the control system and separator
oil heaters is included. If environmental conditions require
more than 2000 watts of heat, an appropriately oversized
control transformer will be required. Figure 14 - Point-to-Point Wiring Diagram
4. One normally open compressor motor starter auxiliary

contact should be supplied and wired as shown on the starter
package wiring diagram. In addition, the compressor starter
coil and the CPT secondaries should be wired as shown on
the starter package wiring diagram, Figure 13.
INSTALLATION Page 13
5. The compressor motor Current Transformer (CT) can be

installed on any one phase of the compressor leads.
NOTICE
NOTICE
the starter package as this would bypass the compres-
Do not install a compressor HAND/OFF/AUTO switch in
The CT must see all the current on any one phase, sor safety devices.
therefore in wye-delta applications BOTH leads of any
one phase must pass through the CT. CONTROL POWER REGULATOR
CURRENT TRANSFORMER SIZE Compressor units that will be used in areas that suffer brown-
outs and other significant power fluctuations can be supplied
Calculate (CT) size using the following formula where SF is with a control power regulator. See Figure 15, Recommended
Service Factor and FLA is Full Load Amps of the Motor. Regulator Installation.
FLA x SF x 1.1 (round up to the next hundred)
Example: FLA = 379; Service Factor = 1.15
379 x 1.15 x 1.1 = 479
Use a 500:5 CT
DO NOT use undersized current transformers since the
panel will not be capable of reading potential current. If the
CT is higher than calculated, enter it's value for [CT Factor]
on the panel. The unit can operate with a CT one size larger
than calculated, however, replace with the proper size ASAP.
NOTICE
DO NOT operate unit with a CT more than one size
larger than recommended.
MINIMUM BURDEN RATINGS

The following table gives the minimum CT burden ratings.
This is a function of the distance between the motor starting
package and the compressor unit.
BURDEN MAXIMUM DISTANCE FROM
RATING FRICK PANEL Figure 15 - Recommended Regulator Installation
USING # USING # USING #
ANSI VA
14 AWG 12 AWG 10 AWG
B-0.1 2.5 15 ft 25 ft 40 ft
B-0.2 5 35 ft 55 ft 88 ft
B-0.5 12.5 93 ft 148 ft 236 ft
Page 14 OPERATION
Operation COMPRESSOR LUBRICATION SYSTEM

The RXF compressor is designed specifically for operation
OPERATION and START-UP without an oil pump for high stage service. Boosters and
INSTRUCTIONS some low-differential pressure applications will require the
demand pump option.
The Frick RXF Rotary Screw Compressor Unit is an
integrated system consisting of six major subsystems: The lubrication system on an RXF screw compressor unit
Control Panel – See publications 090.040-O, M, & CS for performs several functions:
QUANTUM™HD; Compressor; Compressor Lubrication 1. Lubricates the rotor contact area, allowing the male
System; Compressor Oil Separation System; Compressor rotor to drive the female rotor on a cushioning film of oil.
Hydraulic System; Compressor Oil Cooling System.
2. Provides lubrication of the bearings and shaft seal.
The information in this section of the manual provides the 3. Serves to remove the heat of compression from the gas,
logical step-by-step instructions to properly start up and keeping discharge temperatures low and minimizing
operate the RXF Rotary Screw Compressor Unit. refriger ant or oil breakdown.
4. Fills gas leakage paths between or around the rotors with
NOTICE oil, thus greatly reducing gas leakage and maintaining good
compressor performance even at high compression ratios.
For alarm descriptions and shutdown or cutout
param-eters, see publication 090.040-O. 5. Provides oil pressure for development of balance load
on the balance pistons to reduce bearing loading and
increase bearing life.
WARNING NO PUMP OIL SYSTEM
THE FOLLOWING SUBSECTIONS MUST BE READ
AND UNDERSTOOD BEFORE ATTEMPTING TO The RXF screw compressor unit is designed to be self-lu-
START OR OPERATE THE UNIT. bricating. Oil being supplied to the compressor from the oil
separator is at system head pressure. Within the compressor,
RXF COMPRESSOR oil porting to all parts of the compressor is vented back to a
point in the compressor’s body that is at a pressure lower than
The Frick RXF rotary screw compressor utilizes mating asym- compressor discharge pressure. The compressor’s nor-mal
metrical profile helical rotors to provide a continuous flow of operation makes the compressor unit operate essentially as
refrigerant vapor and is designed for high pressure applica- its own oil pump. All oil entering the compressor is moved by
tions. The compressor incorporates the following features: the compressor rotors out the compressor outlet and back to
the oil separator. For normal high-stage operation an oil pump
1. High capacity roller bearings to carry radial loads at
is not required.
both the inlet and outlet ends of the compressor.
2. Heavy-duty angular contact ball bearings to carry axial COLD-START SYSTEM
loads are mounted at the discharge end of compressor.
The RXF package is equipped with a special "cold-start"
3. Moveable slide valve to provide infinite step capacity discharge check valve on the gas outlet connection of the oil
control from 100% to 25% of full load capacity. separator. This valve causes the oil separator to develop oil
pressure rapidly on initial start in order to lubricate the
4. VOLUMIZER II adjusts to the most efficient of three volume compressor without requiring an oil pump, even in cold ambi-
ratios (2.2, 3.5 or 5.0) depending upon system requirements. ent temperatures with all pressures equalized. See Figure 16.
5. Hydraulic cylinders to operate the slide valve. For high-stage packages, the cold-start valve is equipped
with a large spring that creates 30 psi of pressure in the oil
6. Compressor housing suitable for 350 PSI pressure. separator (above suction pressure), for lubrication of the
7.Most bearing and control oil is vented to closed threads compressor.
in the compressor instead of suction port to avoid
performance penalties from superheating suction gas.
CAUTION
8. The shaft seal is designed to maintain operating DO NOT ATTEMPT TO SERVICE THE COLD-START
pressure on the seal well below discharge pressure for VALVE. PLEASE CONTACT THE FRICK SERVICE
increased seal life. DEPARTMENT.
9. Oil is injected into the rotors to maintain good volumetric Once the compressor is running it will begin to force gas to
and adiabatic efficiency, even at very high compression ratios. the condenser at connection P2. See Figure 16. As the
condenser heats up it will begin to rise in pressure as the
WARNING compressor suction pulls down in pressure. As soon as dif-
ferential pressure is developed between the condenser and
It is mandatory that the coupling center be removed and suction, these pressures act across a piston inside the cold-
the direction of motor rotation be confirmed before run- start valve to partially overcome the spring force. When the
ning the compressor. Proper rotation of the compressor differential pressure reaches and exceeds 30 psi, the piston
shaft is clockwise looking at the end of the compressor fully overcomes the spring force and powers the valve fully
shaft. Failure to follow this step could result in backward open for very low operating pressure drop.
compressor rotation which can cause compressor failure
or explosion of the suction housing.
OPERATION Page
15
Para aplicaciones de refuerzo, la válvula está equipada con un resorte más

ligero que produce 1/2 bar (7 psi) de presión de aceite por encima de la
presión de succión antes de que poderes abiertos. El resorte más pesado
no es necesario porque el refuerzo los compresores están equipados con
una bomba de aceite a demanda.
El paquete RXF también está equipado con un bypass de válvula de

retención de succión.
El separador de aceite sangrará lentamente hasta la presión de succión
del sistema cuando la unidad está detenida. Esto permite que el motor de
accionamiento del compresor tenga un arranque, y la válvula de retención
de descarga se asentará más firmemente. Ver el Sección "BYPASS
VÁLVULA DE RETENCIÓN DE SUCCIÓN" para su funcionamiento.
Figure 17
The sight glass located near the bottom of the coalescer
section of the oil separator should remain empty during
normal operation. If an oil level develops and remains in the
sight glass, a problem in the oil return separation system or
compressor operation has developed. Refer to Maintenance
for information on how to correct the problem.
Figure 16 -"Válvula de retención de descarga de

"arranque en frío
NOTICE
Normal operating level is between the top sight
SISTEMA DE ACEITE DE BOMBA DE DEMANDA glass and bottom sight glass located midway along
Este sistema está diseñado para proporcionar una lubricación the oil separator shell.
adecuada del compresor para algunas aplicaciones de etapa
alta que operan con baja presión diferencial a través de la COMPRESSOR HYDRAULIC SYSTEM
succión y descarga del compresor y todas las aplicaciones de The hydraulic system of the RXF compressor utilizes oil
refuerzo. pressure from internally drilled passages in the compres-sor
En el arranque, Quantum ™ HD calculará la diferencia de casing to selectively load and unload the compressor by
presión entre la descarga del compresor y el puerto principal applying this pressure to the actuating hydraulic piston of the
de inyección de aceite. Si este diferencial es inferior a 35 psi, movable slide valve (MSV). It also uses oil pressure to
entonces la bomba de demanda se encenderá y continuará actuate a hydraulic piston that moves the movable slide stop,
funcionar hasta obtener un diferencial de 45 psi. Entonces, la Volumizer II. This allows adjustment of the compressor
bomba se apagará y comience solo cuando la presión volume ratio, (Vi) while the compressor is running.
diferencial caiga por debajo de 35 psi.
CAPACITY CONTROL
NOTICE COMPRESSOR LOADING: The compressor loads when
MSV solenoid coil YY2 is energized and oil flows from the
For alarm descriptions and shutdown or cutout solenoid valve through the needle valve (HV2) to
param-eters, see publication 090.040-O. compressor port 2, where it enters the load side of the
slide valve piston. This equalizes the force on the slide
COMPRESSOR OIL SEPARATION SYSTEM valve piston and discharge pressure on the slide valve
area loads the compressor. See Figure 18.
The RXF is an oil-flooded screw compressor. Most of the oil
discharged by the compressor separates from the gas flow in COMPRESSOR UNLOADING: The compressor unloads
the oil charge reservoir. Some oil, however, is discharged as when MSV solenoid YY1 is energized and oil is allowed to
a mist which does not separate readily from the gas flow and flow from compressor port 2 thru the needle valve to the MSV
is carried past the oil charge reservoir. The coalescer filter solenoid. This allows discharge pressure on the slide valve
element then coalesces the oil mist into droplets, the droplets piston to unload the slide valve as the piston moves outward.
of oil fall to the bottom of the coalescer section of the oil
separator. The return of this oil to the compressor is controlled ADJUSTMENT (Capacity Control): A needle valve (HV2)
by a hand expansion valve (HV1). See Figure 17. is provided to adjust slide valve travel time, preventing
excessive slide valve “hunting”. HV2 should be adjusted to
restrict oil flow to the compressor port so that slide valve
NOTICE travel time from full load to full unload, or vice versa, is a
minimum of 30 seconds.
Open HV1 only enough to keep the coalescer end of
the separator free of oil.
Page 16 OPERATION
wrong Vi, or to load or unload improperly. Operation at the

NOTICE wrong compressor Vi can cause excessive power
consump-tion, noise, vibration, or excessive oil foaming.
A change in operating conditions, such as winter-to- See Figures 19 - 21 for correct installation of gaskets and
summer operation, may require readjustment of location of solenoids.
slide valve travel time.
PRESSURE YY3
COMMON
OUT
VENT COMMON
OUT
PRESSURE
YY4
GASKET INSTALLATION SIDE VIEW

Figure 19 - RXF 12–19 Vi Control
Figure 18
VOLUMIZER II Vi CONTROL
The RXF compressor is equipped with a special internal
control that automatically adjusts the compressor volume ratio
to the most efficient of three available steps, (2.2, 3.5, or 5.0
volume ratio). This gives the compressor the ability to operate
at varying operating conditions while minimizing power
consumption by avoiding over or undercompression.
Solenoid valves 3 and 4 (See Figures 19 - 21 and location
on P & I diagram represented by YY3 and YY4) control the
Volumizer II volume ratio control. Oil is internally ported to
apply hydraulic pressure to two stepping pistons in order
to move the moveable slide stop to the optimum position.
The following chart shows the logic of solenoid operation
to adjust the volume ratio.
Vi SOLENOID 3 / YY3 SOLENOID 4 / YY4 Figure 20 - RXF 24–50 Vi Control

2.2 Energized Energized
3.5 Deenergized Energized
5.0 Deenergized Deenergized
Proper operation of the Volumizer II control can be
checked as follows.
1. Set the compressor Vi to 2.2, then record the voltage that is
shown on the Slide Valve calibration screen for the cur-rent
Slide Valve and 0% Slide Valve positions. The difference
between these voltages must be in the 1.35 - 1.65 Vdc range.
4. If the above voltage measurements are all in range, the Figure 21 - RXF 58–101 Vi Control
Volumizer II is working properly. If any of the voltages are
out of range, go to the troubleshooting section. SLIDE VALVE CALIBRATION
Proper installation of the Vi control valves and gaskets is Slide valve calibration is performed on the Quantum ™HD
essential to the operation of this equipment. Incorrectly control panel in automatic mode. If further problems occur
installed parts may cause the compressor to operate at the or persist, contact Johnson Controls-Frick service.
OPERATION Page
17
COMPRESSOR OIL COOLING SYSTEMS liquid refrigerant is then supplied to the motorized
expansion valve. Refer to P & I DIAGRAMS section for
The RXF unit can be equipped with one of several systems piping and instrumentation drawings.
for controlling the compressor oil temperature. They are single
or dual-port liquid injection, thermosyphon, or water-cooled oil DUAL-PORT LIQUID INJECTION
coolers. Each system is automatically controlled,
The dual-port liquid injection system is designed to obtain
independentof compressor loading or unloading.
the most efficient compressor performance at high and low
Oil cooling systems maintain oil temperature within the fol- compression ratios by permitting injection of liquid
lowing ranges for R-717: refrigerant into one of two ports optimally located on the
compressor. This minimizes the performance penalty
Liquid Injection Oil Cooling: 130 to 150°F
incurred with liquid injection oil cooling.
External* Oil Cooling: 120 to 140°F
* Thermosyphon Oil Cooling (TSOC) or Water-Cooled Oil The dual-port system contains all the components of the
Cooling (WCOC). single-port system with the addition of a 3-way motorized
valve and operates as outlined.
SINGLE-PORT LIQUID INJECTION
The liquid injection solenoid valve is energized by the micro
The single-port liquid injection system is designed to permit processor when the temperature sensor, installed in the
liquid refrigerant injection into one port on the compressor at compressor discharge, exceeds the setpoint. Liquid refriger-
any given moment and operates as outlined. ant is then passed through the motorized expansion valve to
the 3-way motorized valve. Depending on the compressor’s
The liquid injection solenoid valve is energized by the micro operating volume ratio (Vi), the microprocessor will select the
processor when the temperature sensor, installed in the flow of the liquid refrigerant to the optimum compressor port.
compressor discharge, exceeds the setpoint. High-pressure
QUANTUM™HD EZ-COOL™ LIQUID INJECTION ADJUSTMENT PROCEDURE
Figure 22
DESCRIPTION: This screen allows the user to enter and EZ COOL PI CONTROL
view the basic operating parameters related to EZ Cool
LIOC PI control. [Setpoint] - Enter the value that you wish to control to.
The following are the EZ Cool LIOC Setup screen [Proportional Band] – This setpoint determines the size of a
selections available on this screen: region either above or below the Control Setpoint. Within this
region, the Proportional component of the PI Output value is
the number between 0% and 100% that directly
Page 18 OPERATION
corresponds to the difference between the Control Input •• “Down” arrow push button (Figures 23 and 24)
(Actual) and the Control Setpoint (Setpoint). Outside of this - Decreases parameter number by 1 at each activation.
region, the Proportional component is either 100% or 0%. If •• “Up” arrow push button (Figures 23 and 24)
the PI’s Action is Forward, the Proportional Band extends - Increases parameter number by 1 at each activation.
above the Control Setpoint. If the PID’s Action is Reverse, the
Proportional Band extends below the Control Setpoint.
[Integration Time] - This setpoint controls the influence that

the Integral component exerts on the PI Output value. The
Integral component works to push the Control Input toward
the Control Setpoint by tracking the difference be-tween the
Control Input and the Control Setpoint over time.
High Limit - The highest value that the output can be.
Low Limit - The lowest value that the output can be.
I/O Board - One of the following will be shown:

•• None
•• Analog Board 1
•• Analog Board 2
I/O Channel - The output channel that will be used will be

shown.
Port Multiplier - The standard value is 1 (one).

Figure 23
DIGITAL CONTROL
An output is provided for an optional Liquid Injection sole-
noid valve. The function of this output is only available if
the compressor has Liquid Injection oil cooling and it has
been enabled. Liquid Injection controls the supply of liquid
refrig-erant to the compressor. Liquid Injection is off (the
solenoid is closed) if the compressor is off.
[On When Above] - When the Discharge Temperature is

above this setpoint, the Liquid Injection solenoid output will
energize, until the Discharge Temperature drops below
this setpoint.
[Off When Below] - When the Discharge Temperature is

below this setpoint, the Liquid Injection solenoid output will
de-energize, until the Discharge Temperature raises
above this setpoint. Figure 24
STATUS •• Enter push button (Figures 23 and 24)
- Gives access to the Parameter list by keeping the
Discharge Temperature - The actual Discharge tempera-
push button activated for 2 seconds. A Parameter list
ture is shown here.
example is shown below (parameter i08, Figure 25).
Control Output - The value of the Output signal as con-
trolled by the PI. This is not a setpoint value.
Valve Position - The value shown here represents the po-

sition of the valve with relationship to the Control Output.
OPERATION OF DANFOSS
LIQUID INJECTION VALVE
The Danfoss ICAD (Industrial Control Actuator with Display) is
equipped with an LED Interface from which it is possible to
monitor and change the setting of parameters to adapt the
ICAD and the corresponding ICM (Motorized Industrial Figure 25
Control Valve) to the actual refrigeration application.
- Gives access to change a value once the Parameter
The setting of parameters is managed by means of the list has been accessed.
inte-grated ICAD (Figures 23 and 24) and consists of: - Acknowledge and save change of value of a parameter.
OPERATION Page
19
- To exit from the Parameter list and return to the 1. Ensure that there is power to the valve (24 VDC) and all
display of Opening Degree (OD), keep the push wiring is complete prior to configuring the motorized valve.
button activated for 2 seconds. The ICAD 600 requires 1.2 amps for operation and the ICAD
•• Display (Figure 26) 900 requires 2.0 amps.
- Normally the Opening Degree (OD) 0 - 100% of the 2. Identify which actuator is being used (ICAD 600 or 900)
ICM valve is displayed. No activation of push buttons and which motorized valve is being used (ICM 20, 25, 32,
for 20 seconds means that the display will always 40, 50, or 65). Ensure that the correct actuator is being
show 0 (Figure 25). used with the ICM valve as follows:
ICM20 with ICAD 600
ICM25 with ICAD 600
ICM32 with ICAD 600
ICM40 with ICAD 900
ICM50 with ICAD 900
ICM65 with ICAD 900
3. When the valve is initially powered, A1 and CA will be
flashing on the LED display. Hold the enter button down
for two seconds until these values stop flashing.
4. Push the down arrow button and scroll until j10 is displayed
Figure 26 and push the enter button. Using the up arrow, scroll until j11
is displayed and push the enter button. This step must be
•• Displays the parameter.
completed within 20 seconds or the valve will reset.
•• Displays the actual value of a parameter.
5. Push the down arrow button again and scroll until j26 is
•• Displays the function status by means of text (Figure 23).
displayed and push the enter button. Identify the ICM
- Mod represents that ICAD is positioning the ICM valve being used and push the up arrow until the correct
valve according to an analog input signal (Current). number is displayed for the ICM valve and then push the
- Low represents that ICAD is operating the ICM valve enter button. The values are as follows:
like an ON/OFF solenoid valve with low speed 1 for ICM20
according to a digital input signal. 2 for ICM25
- Med represents that ICAD is operating the ICM valve 3 for ICM32
like an ON/OFF solenoid valve with medium speed 4 for ICM40
according to a digital Input signal. 5 for ICM50
6 for ICM65
- High represents that ICAD is operating the ICM valve
like an ON/OFF solenoid valve with high speed 6. The ICAD will store these parameters with the power
according to a digital input signal (Figure 27). removed.
Alarms - ICAD can handle and display different alarms.
ICM
Description Comments
Alarm Text
No valve type A1 At start-up A1 and CA will be
selected displayed
Controller fault A2 Internal fault inside electronics
All input error A3 When input amps are > 22 mA
Reset to factory setting:

1. Remove the power supply.
Figure 27
2. Activate down arrow and up arrow push buttons at the
•• Alarms same time.
- If an alarm has been detected the ICAD display (Figure
3. While continuing to push the down and up arrows, con-
23) will alternate between showing Actual alarm and
present Opening Degree. nect the power supply.
- If more than one alarm is active at the same time, the 4. Release down arrow and up arrow push buttons.
alarm with the highest priority will take preference. A1
has the highest priority, A3 the lowest. 5. When the display on ICAD (Figure 23) is alternating
- All alarms will automatically reset themselves when between showing: CA and A1 the factory resetting is
they physically disappear. complete.
- Old alarms (alarms that have been active, but have physi-
cally disappeared again) can be found in parameter i11.
Typically motorized valves are factory set. If adjustments

are needed, the following procedure can be used.
Page 20 OPERATION
PARAMETER LIST
Display Factory
Description Name Min. Max. Setting Unit Comments
ICM OD ICM valve Opening Degree is displayed during normal operation.
- 0 100 - %
(Opening Degree) Running display value (see j01, j05).
Internal main switch
1: Normal operation
Main Switch j01 1 2 1 - 2: Manual operation. Valve Opening Degree will be flashing. With the
down arrow and the up arrow push buttons the OD can be entered
manually.
Operation mode
1: Modulating - ICM positioning according to Analogue input (see j03)
Mode jo2 1 2 1 - 2: ON/OFF - operating the ICM valve like an ON/OFF solenoid valve
controlled via Digital Input. See also j09.
Type of Analog input signal from external controller
1: 0-20mA
Analog Input signal j03 1 4 2 - 2: 4-20mA
3: 0-10V
4: 2-10V
Speed can be decreased. Max. speed is 100 %
Not active when j01 = 2
If j02 = 2, the display will indicate speed in display. Low, Med, and
Speed at ON/OFF
j04 1 100 100 % High also means ON/OFF operation.
and Modulating Mode
If j04 < = 33, Low is displayed
33 < If j04 < = 66, Med is displayed
If j04 > = 67, High is displayed
Not active before j26 has been operated.
Automatic calibration j05 0 1 0 - Always auto reset to 0.
CA will flash in the display during calibration.
Type of A0 signal for ICM valve position
0: No signal
Analog Output signal j06 0 2 2 - 1: 0 - 20mA
2: 4 - 20mA
Define condition at power cut when fail-safe is installed.
1: Close valve
Fail-safe j07 1 4 1 - 2: Open valve
3: Maintain valve position
4: Go to OD given by j12
Define function when Dl is ON (short circuited Dl terminals) when j02 = 2
Digital Input function j09 1 2 1 1: Open ICM valve (Dl = OFF = > Close ICM valve)
2: Close ICM valve (Dl = OFF = > Open ICM valve)
Enter number to access password protected parameters:
Password j10 0 199 0 - j26
Old alarms will be listed with the latest shown first. Alarm list can be
Old Alarms j11 A1 A99 - - reset by means of activating down arrow and up arrow at the same
time for 2 seconds.
Only active if j07 = 4
OD at powercut j12 0 100 50 - If fail-safe supply is connected and powercut occurs, ICM will go to
entered OD.
NB: Password protected. Password = 11
At first start-up, A1 will flash in display. Enter valve type.
0: No valve selected. Alarm A1 will become active.
1: ICM20 with ICAD 600
ICM configuration j26 0 6 0 2: ICM25 with ICAD 600
OD% j50 0 100 - % ICM valve Opening Degree
AI [mA] j51 0 20 - mA Analog Input signal
AI [V] j52 0 10 - V Analog Input signal
AO [mA] j53 0 20 - mA Analog Output signal
DI j54 0 1 - - Digital Input signal
DO Close j55 0 1 - - Digital Output Closed status. ON when OD < 3%
DO Open j56 0 1 - - Digital Output Open status. ON when OD > 97%
DO Alarm j57 0 1 - - Digital Output alarm status. ON when an alarm is detected
MAS mP SW ver. j58 0 100 - - Software version for MASTER Microprocessor
SLA mP SW ver. j59 0 100 - - Software version for SLAVE Microprocessor
OPERATION Page
21
THERMOSYPHON OIL COOLING adequate oil flow. There is still an orifice installed in the
compressor to control maximum oil flow. At initial start-up of
Thermosyphon oil cooling is an economical, effective method the package the hand expansion valve must be fully open.
for cooling oil on screw compressor units. Thermosyphon After initial start-up of the package the hand expansion valve
cooling utilizes liquid refrigerant at condenser pressure and should be adjusted. There are two methods of determining the
temperature which is partially vaporized at the condenser correct adjustment of this valve.
temperature in a shell and tube or plate-type vessel, cooling
the oil. The vapor, at condensing pressure, is vented to the The best method to determine target discharge temperature is to
condenser inlet and reliquified. This method is the most cost run CoolWare™ with the operating conditions of the compressor.
effective of all currently applied cooling systems since no The program will give you a theoretical discharge temperature of
compressor capacity loss or compressor power penalties are the compressor. Once this temperature is known, you may adjust
incurred. The vapor from the cooler need only be condensed, the hand expansion valve. The ideal discharge temperature is
not compressed. Refrigerant flow to the cooler is automa tic, within 5°F + or – of the theoretical discharge temperature. Adjust
driven by the thermosyphon principle, and cooling flow the valve to achieve the theo-retical discharge temperature. If you
increases as the oil inlet temperature rises. do not have access to CoolWare™, 180°F is a good target
discharge temperature for a high stage ammonia compressor.
Booster applications and compressors using HFC and HCFC
refrigerants may run cooler. Compressors with high discharge
pressure may run hotter.
The first method is used for compressors with External Oil

Cooling (Thermosyphon, Water Cooled, and Glycol
Cooled). Before the initial startup of the compressor close
the hand expansion valve completely. Open the valve
back up and count the turns that it takes to fully open the
valve. After the initial startup close the valve to achieve
approximately 180°F discharge temperature or the
theoretical temperature from CoolWare. Do not fully close
the valve at any time while the compressor is running.
The second method is used for compressors with Liquid
Injection Oil Cooling. Because the discharge temperature is
controlled by the Liquid Injection Thermal Expansion Valve
Figure 28 you will not be able adjust for the correct oil flow by using the
discharge temperature. Before the initial startup of the
SYSTEM OPERATION: Liquid refrigerant fills the cooler. compressor close the main oil injection hand expansion valve
Warm or hot oil (above the liquid return temperature) flowing completely. Open the valve back up and count the turns that it
through the cooler will cause some of the refrigerant to boil takes to fully open the valve. After the initial startup, close the
and vaporize. The vapor rises in the return line. valve until it is two turns open. The valve may need to be
closed further to reduce excessive noise and vibration.
The density of the refrigerant liquid/vapor mixture in the
However, DO NOT fully close the valve!
return line is considerably less than the density of the
liquid in the supply line. This imbalance provides a
differential pressure which sustains a flow condition to the
oil cooler. This relationship involves:
WARNING
Failure to properly adjust this valve can lead to
1. Liquid height above the cooler. exces-sive noise and vibration of the compressor
and package, premature failure of the bearings,
2. Oil heat of rejection. liquid loading of the rotors, liquid starvation of the
3. Cooler size and piping pressure drops. rotors and catastrophic failure of the compressor.
Current thermosyphon systems are using single-pass oil 2. All RXF Models! For proper and safe operation, the com-
coolers and flow rates based on 3:1 overfeed. pressor must be run at the proper speed and discharge pres-
sure. Exceeding design conditions creates a potential hazard.
The liquid/vapor returned from the cooler is separated in
3. Rotate and lubricate motor bearings according to manufac-
the receiver. The vapor is vented to the condenser inlet
and need only be reliquified since it is still at condenser turer’s recommendations PRIOR to initial start-up as required.
pressure (see Figure 28). 4. After running the unit for approximately three hours, ad-just
liquid injection oil cooling if applicable. If unit has water cooled
INITIAL START-UP PROCEDURE oil cooling, adjust water control valve to cooler.
Having performed the checkpoints on the prestart check 5. The compressor slide valve linear transmitter should be
list (see FORMS section), the compressor unit is ready for calibrated.
start-up. It is important that an adequate refrigerant load
6. Perform vibration analysis if equipment is available.
be available to load test the unit at normal operating condi-
tions. The following points should be kept in mind during 7. Pull and clean suction strainer after 24 hours operation. If it
initial start-up. is excessively dirty, repeat every 24 hours until system is
clean. Otherwise, follow the Maintenance Schedule. See the
1. Models 58 - 101 ONLY! It is imperative that during the
RECOMMENDED MAINTENANCE PROGRAM section.
initial start-up of the package that the hand expansion
valve on the main oil injection line is fully open to ensure
Page 22 OPERATION
NORMAL START-UP PROCEDURE VFD SKIP FREQUENCIES

1. Confirm system conditions permit starting the compressor. Criteria for Identifying Elevated Energy on VFD
2. Press the [RUN] key.
Packages and Establishing “Skip” Frequencies
With the RXF running loaded at full speed, the entire package
3. Allow the compressor to start up and stabilize. At start-
must be physically checked for elevated energy, including any
up, the slide stop (volumizer) and the slide valve (capacity corresponding extremities such as valves, liquid injec-tion
control) are in the AUTO mode. piping, brackets, tubing, oil cooler and oil piping. The VFD
4. Observe the compressor unit for mechanical tightness speed is to be decreased by 100 rpm increments and the
of the external piping, bolts and valves. Ensure that the entire package physically checked for elevated energy at
ma-chine is clean from oil and refrigerant leaks. If any of each stage until the minimum speed range is reached. As the
these occur, shut down the compressor and correct the high energy hot spots are identified, they are to be checked
problem as necessary using good safety precautions. with a vibration meter and any readings that meet or exceed
one inch per second must have that frequency range skipped
5. RETIGHTEN OIL SEPARATOR COVER BOLTS at in the microprocessor for the VFD, eliminating the ability of
con-denser design pressure (while system is running) the package to operate within that frequency range. Each
to 90 ft-lb for models 12 - 50. identified range needs to have the skip set to as narrow a
frequency band as possible, only making it wider until full
RETIGHTEN MANWAY BOLTS at condenser design range is accommodated. Please also reference 070.902-IB for
pressure (while system is running) to 150 ft-lb for models acceptable package vibration readings.
58 - 101 (11" x 15" manway); 180 ft-lb on 12" x 16"
manway for oversized separator on 85/101 models. Skip frequencies should be reviewed and verified annually.
RESTARTING COMPRESSOR UNIT AFTER CONTROL

POWER INTERRUPTION (PLANT POWER FAILURE)
1. Check ADJUSTABLE setpoints.

2. Follow normal start-up procedure.
MAINTENANCE Page
23
Keep liquid injection valves properly adjusted and in good

Maintenance condition to avoid flooding compressor with liquid. Liquid
This section provides instructions for normal maintenance, can cause a reduction in compressor life and in extreme
a recommended maintenance program, troubleshooting cases can cause complete failure.
and correction guides, typical wiring diagrams and typical 5. Protect the compressor during long periods of shut
P and I diagrams. down. If the compressor will be setting for long periods
without run-ning it is advisable to evacuate to low pressure
WARNING and charge with dry nitrogen or oil, particularly on systems
known to contain water vapor.
This section must be read and understood before at-
tempting to perform any maintenance or service to 6. Preventive maintenance inspection is recommended
the unit. any time a compressor exhibits a noticeable change in
vibration level, noise or performance.
NORMAL MAINTENANCE OPERATIONS
COMPRESSOR SHUTDOWN and START-UP
When performing maintenance you must take several pre-
cautions to ensure your safety: For seasonal or prolonged (six months) shutdown,
use the following procedure:
CAUTION 1. Push [STOP] key to shut down unit.
1. IF UNIT IS RUNNING, PUSH [STOP] KEY TO 2. Open disconnect switch for compressor motor starter.
SHUT DOWN THE UNIT.
2. DISCONNECT POWER FROM UNIT BEFORE 3. Turn off power.
PER-FORMING ANY MAINTENANCE. 4. Isolate the package by closing all package valves to the
3. WEAR PROPER SAFETY EQUIPMENT WHEN COM- system. Tag all closed valves.
PRESSOR UNIT IS OPENED TO ATMOSPHERE.
4. ENSURE ADEQUATE VENTILATION.
5. TAKE NECESSARY SAFETY PRECAUTIONS RE- CAUTION
QUIRED FOR THE REFRIGERANT BEING USED. Open any solenoid valves orother valves that may trap
liquid between the isolation valves and other package
valves to prevent injury or damage to components.
WARNING 5. With liquid injection, close the manual hand valve up-
CLOSE ALL COMPRESSOR PACKAGE ISOLATION stream of the solenoid and manually open the solenoid by
VALVES PRIOR TO SERVICING THE UNIT. FAILURE turning “in” the manual opening stem (clockwise viewed
TO DO SO MAY RESULT IN SERIOUS INJURY. from below valve).
GENERAL MAINTENANCE 6. Shut off the cooling water supply valve to the oil cooler.
Drain water, if applicable. Attach CLOSED tags.
Proper maintenance is important in order to assure long
and trouble-free service from your screw compressor unit. 7. Protect oil cooler from ambient temperatures below
Some areas critical to good compressor operation are: freezing.
1. Keep refrigerant and oil clean and dry, avoid moisture
contamination. After servicing any portion of the refrigera
tion system, evacuate to remove moisture before returning
NOTICE
The unit should be inspected monthly during
to service. Water vapor condensing in the compressor
shutdown. Check for leaks or abnormal pressure. Use
while running, or more likely while shut down, can cause
rusting of critical components and reduce life. the main-tenance log to record readings to verify the
pressure stability of the unit. To prevent the seals and
2. Keep suction strainer clean. Check periodically, par- bearing from drying out, run oil pump (if available) and
ticularly on new systems where welding slag or pipe scale manually rotate the compressor shaft. Consult motor
could find its way to the compressor suction. Excessive manufac-turer for motor recommendations.
dirt in the suction strainer could cause it to collapse,
TO START UP AFTER SEASONAL OR PROLONGED SHUT-
dumping particles into the compressor.
DOWN, USE THE FOLLOWING PROCEDURE :
3. Keep oil filters clean. If filters show increasing pressure
drop, indicating dirt or water, stop the compressor and 1. Perform routine maintenance. Change oil and replace
change filters. Running a compressor for long periods with filters. Check strainers.
high filter pressure drop can starve the compressor for oil 2. Any water necessary for the operation of the system
and lead to premature bearing failure. that may have been drained or shut off should be restored
4. Avoid slugging compressor with liquid refrigerant. While or turned on.
screw compressors are probable the most tolerant to in- 3. Reset solenoid valves to automatic position, then open
gestion of some refrigerant liquid of any compressor type all valves previously closed. Remove tags.
available today, they are not liquid pumps. Make certain to
maintain adequate superheat and properly size suction 4. Compressor unit is ready for prestart checks. Refer to
accumulators to avoid dumping liquid refrigerant into com- PRESTART CHECKLIST.
pressor suction.
Page 24 MAINTENANCE
COMPRESSOR/MOTOR SERVICING 2. Isolate the package by closing all package valves to the
system. Tag all closed valves.
Before removing the motor from an RXF unit, it is criti-cal
that proper support be provided for the compressor to
prevent damage to the oil separator. Insert blocks or a
jack between the separator shell and compressor casting.
CAUTION
Open any solenoid valves or other valves that may trap
Make sure the weight is held safely by the separator shell.
Loosen the compressor discharge flange bolts to relax any liquid between the isolation valves and other package
flange and pipe stress, then carefully remove the motor. valves to prevent injury or damage to components.
Similarly, before removing the compressor for servicing, SLOWLY vent separator to low-side system pressure
the back end of the motor must be supported to prevent using the suction check valve bypass.
damage. Again, insert either blocks or a jack between the
rear of the motor and the separator shell.
NOTICE
GENERAL INSTRUCTIONS FOR REPLACING Recover or transfer all refrigerant vapor, in accordance
COMPRESSOR UNIT COMPONENTS with local ordinances, before opening to atmosphere. The
separator MUST be equalized to atmospheric pressure.
When replacing or repairing components which are
exposed to refrigerant, proceed as follows:
1. Push [STOP] key to shut down the unit. CAUTION
2. Open disconnect switches for compressor motor starter Oil entrained refrigerant may vaporize, causing a
and oil pump motor starter (if applicable). sepa-rator pressure increase. Repeat transfer and
recovery procedure, if necessary.
3. Isolate the package by closing all package valves to the
system. Tag all closed valves. 3. Remove spin-on oil filter element and discard.
CAUTION NOTICE
Open any solenoid valves or other valves that may trap Use of oil filters other than Frick may cause
liquid between the isolation valves and other package warranty claim to be denied.
4. Replace with new oil filter element. Make finger tight
4. SLOWLY vent separator to low-side system pressure plus an additional half turn.
using the suction check valve bypass. 5. Isolate the low pressure transducer, PE-4, to prevent
dam-age during pressurization and leak test.
NOTICE 6. Pressurize and leak test.
Recover or transfer all refrigerant vapor, in 7. Evacuate unit to 29.88" Hg (1000 microns).
accordance with local ordinances, before opening to
atmosphere. The separator MUST be equalized to 8. Open the suction and discharge service valves, and the
atmospheric pressure. low pressure transducer. Close disconnect switches for
the compressor. Start the unit.
OIL FILTER (OF-1) CARTRIDGE STYLE (58 – 101)
CAUTION RXF compressor units are furnished with one main oil filter
Oil entrained refrigerant may vaporize, causing a (OF-1). A second oil filter (OF-2) is installed as optional
sepa-rator pressure increase. Repeat transfer and equipment to facilitate the changing of the filter element(s)
recovery procedure, if necessary. without unit shutdown.
5. Make replacement or repair.
6. Isolate the low pressure transducer, PE-4, to prevent NOTICE
dam-age during pressurization and leak test.
Use of oil filters other than Frick may cause
7. Pressurize unit and leak test. warranty claim to be denied.
8. Evacuate unit to 29.88" Hg (1000 microns). To change the filter cartridge proceed as follows:
9. Open all valves previously closed and reset solenoid 1. If a single oil filter is installed, push [STOP] key to shut
valves to automatic position. Remove tags. down the unit. Open disconnect switches for the
10. Close disconnect switches for compressor motor compressor and (if applicable) oil pump motor starters.
starter and oil pump motor starter, if applicable. If dual oil filters are installed, open the outlet, then inlet
11. Unit is ready to put into operation. service valves of the standby filter.
OIL FILTER, SPIN-ON (RXF 12 – 50) WARNING

To change the filter proceed as follows: Open inlet service valve slowly to prevent a sudden pres-
1. Push [STOP] key to shut down the unit. Open sure drop which could cause an oil filter differential alarm.
disconnect switches for the compressor.
MAINTENANCE Page
25
2. Close outlet then inlet service valves of filter being serviced.
3. Open bleed valve and purge pressure from the oil filter
CAUTION
cartridge. Oil entrained refrigerant may vaporize, causing a
4. Close discharge service valve. SLOWLY vent the separator separa tor pressure increase. Repeat transfer and
to low-side system pressure using the suction check valve recovery procedure, if necessary.
bypass. Close suction valve and suction check valve bypass. 3. Close strainer isolation valves. Remove the large plug
from the bottom of the strainer and remove the element
NOTICE from the strainer.
Recover or transfer all refrigerant vapor, in accordance 4. Wash the element in solvent and blow clean with air.
with local ordinances, before opening to atmosphere. The
separator MUST be equalized to atmospheric pressure. 5. Replace the cleaned element and removed plug. Open
strainer isolation valves.
6. Isolate the low pressure transducer, PE-4, to prevent
CAUTION dam-age during pressurization and leak test.
Oil-entrained refrigerant may vaporize, causing a 7.Pressurize and leak test. Evacuate unit to 29.88" Hg
pres-sure increase. Repeat venting and recovery (1000 microns).
procedure, if necessary.
8. Open the suction and discharge service valves, and the
5. Close oil filter isolation valves. Open drain valve on oil low pressure transducer. Close disconnect switches for
filter head and drain the oil. Remove the canister cover. the compressor. Start the unit.
Discard the cartridge and gasket.
LIQUID INJECTION STRAINER
6. Flush the filter body with clean Frick refrigeration oil;
To clean the liquid injection strainer the unit must be shut
wipe dry with a clean, lint-free cloth; and close drain valve.
down. The procedure is as follows:
7. Place a new cartridge in the filter canister. Replace the
gasket and spring and reinstall the canister cover. Torque 1. Push [STOP] key to shut down the unit, then open
cover bolts in sequence to: a. Finger tight discon nect switches for the compressor.
b. 17 ft-lb 2. Close the liquid supply service valve located before the
c. 35 ft-lb liquid solenoid.
8. Isolate the low pressure transducer, PE-4, to prevent 3. Immediately screw in the manual solenoid valve
damage during pressurization and leak test. stem to relieve liquid refrigerant pressure trapped
between the solenoid and the service valve.
9. Pressurize and leak test.
4. Close the service valve located between the compressor
10. Evacuate the unit to 29.88" Hg (1000 microns).
and the liquid injection thermal expansion valve.
11. Add 2 gallons of oil by attaching a suitable pressure-type
5. Carefully loosen capscrews securing the strainer cover
hose to the oil-charging valve located on top of the separator.
to the strainer. Allow pressure to relieve slowly.
Use a pressure-type oil pump and recommended Frick oil.
6. When all entrapped refrigerant has been relieved, carefully
12. Open the suction and discharge service valves, oil filter
remove loosened capscrews (as liquid refrigerant is sometimes
isolation valves, and the low pressure transducer.
caught in the strainer), strainer cover, and strainer basket.
Readjust suction check valve bypass. Close disconnect
switches for the compressor and (if applicable) the oil 7. Wash the strainer basket and cover in solvent and blow
pump motor start-ers. Start the unit. clean with air.
COALESCER OIL RETURN STRAINER 8. Reassemble the strainer.
1. Push [STOP] key to shut down the unit. Open 9. Open the service valve between the compressor and
disconnect switches for the compressor. the liquid injection thermal expansion valve, purge
entrained air, and check for leakage.
2. Isolate the package by closing all package valves to the
system. Tag all closed valves. 10. Screw out the manual solenoid valve stem.
11. Carefully open the liquid supply service valve.
CAUTION 12. Leak test.
Open any solenoid valves or other valves that may trap
13. Close disconnect switches for compressor starter.
liquid between the isolation valves and other package
valves to prevent injury or damage to components. 14. Start the unit.
SLOWLY vent separator to low-side system pressure
using the suction check valve bypass. OIL PUMP STRAINER (Optional)
To clean the full-lube oil pump strainer, the unit must be
NOTICE shut down. The procedure is as follows:
1. Push [STOP] key to shut down the unit, then open the
Recover or transfer all refrigerant vapor, in accordance
disconnect switches for the compressor and (if applicable)
with local ordinances, before opening to atmosphere. The the oil pump motor starters.
Page 26 MAINTENANCE
2. Close strainer service valves. 6. Replace coalescer filter retainer and nut. Tighten the nut
to 21 ft-lb torque. DO NOT OVERTIGHTEN NUT.
3. Open the drain valve located in the strainer cover and Excessive torque can damage the element and result in oil
drain the oil into a container. carryover. Install jam nut and tighten.
4. Remove the capscrews securing the strainer cover, 7. Install a new head gasket and replace the coalescer head.
strainer cover gasket, and element. Retain the gasket.
8. Tighten the head bolts, first to finger tight, then 65 ft-lb,
5. Wash the element in solvent and blow it clean with air. then 130 ft-lb.
6. Wipe the strainer body cavity clean with a lint-free clean cloth.
7. Replace the cleaned element and gasket, then reattach

NOTICE
the cover using the retained capscrews. WHEN THE COMPRESSOR UNIT IS REPRESSURIZED,
RETIGHTEN SINCE HEAD BOLTS WILL LOOSEN.
8. Reinstall the drain plug and open the strainer service valves.
9. Refer to CHANGING OIL, Steps 9 thru 14.
9. Check for leakage.
CHANGING OIL
10. Close the disconnect switches for the compressor and
(if applicable) the oil pump motor starters.
11. Start the unit.
WARNING
SUCTION CHECK VALVE BYPASS or types. Mixing of oils may cause excessive oil
A 1/4" angle valve is installed between the compressor
gas or oil leakage and catastrophic compressor failure.
and suction flange that can be used as a suction valve
bypass. This feature has several uses including reducing Shut down the unit when changing oil. At the same time all
starting torque, improving oil quality, and relieving the oil filter cartridges must be changed and all oil strainer ele-
refrigerant to low side for servicing. ments removed and cleaned. The procedure is as follows:
In most cases, the valve should be left open approximately 1 1. Push [STOP] key to shut down the unit.
to 2 turns at all times. If the compressor back-spins or too
much oil foaming is experienced while venting, partially close 2. Open disconnect switch for the compressor motor starter.
valve to slow speed of equalization. If system is on AUTO
CYCLE and short cycling occurs, the valve must be closed. 3. Close liquid injection service valves (if applicable).
To relieve refrigerant to low side, close separator 4. Close discharge service valve. SLOWLY vent the
discharge service valve. Slowly open bypass valve (if separator to low-side system pressure using the suction
closed) and wait for pressure to equalize. Close bypass check valve bypass. Close suction valve.
and suction service valves before evacuating the unit.
COALESCER FILTER ELEMENT NOTICE
Recover or transfer all refrigerant vapor, in accordance
CAUTION with local ordinances, before opening to atmosphere. The

Use of coalescer filter elements other than Frick
may cause warranty claim to be denied.
When changing the coalescer filter element, it is recom
CAUTION
mended that the oil and oil filter be changed. Applicable Oil entrained refrigerant may vaporize, causing a
strainer elements should be removed and cleaned. separa tor pressure increase. Repeat transfer and
1. Refer to CHANGING OIL, Steps 1 thru 8.
5. Open drain valve(s) located on the underside of the
2. Remove coalescer head and gasket. Discard the gasket. sepa-rator and drain the oil.
3. Remove and retain nut securing coalescer filter retainer. 6. Drain oil filter, strainers, and oil cooler, if applicable.
4. Remove retainer, coalescer filter element(s), and two 7. Remove and install new oil filter element.
O-rings. Discard the filter element(s).
8. Remove, clean, and reinstall strainer elements in strainers.
5. Install new coalescer filter element(s).
9. Evacuate unit to 29.88" Hg (1000 microns).
NOTICE 10. Open suction service valve and pressurize the unit to system
Frick SuperCoalescer ™ element (with drain feature), on suction pressure. Close the suction valve and leak test.
Models 24–101, must be installed with the "DRAIN
11. Add oil by attaching a suitable pressure-type hose to
DOWN" tag on the bottom at the 6 o'clock position.
the oil drain valve located on top of the separator. Using a
pressure-type oil pump and recommended Frick oil, open
CAUTION the drain valve and fill the separator until oil level is
midway in the top sight glass.
Seat element in center of locating tabs on separator
bulkhead.
MAINTENANCE Page
27
DEMAND PUMP DISASSEMBLY

NOTICE
Evacuation of the oil separator will assist the flow of
oil into the unit. Also, fill slowly because oil will fill
DANGER
up in the separator faster than it shows in the sight BEFORE OPENING ANY VIKING PUMP LIQUID
glass. See Oil Charge section. CHAM-BER (PUMPING CHAMBER, RESERVOIR,
JACKET, ETC.) ENSURE:
12. Open discharge and liquid injection service valves. 1. THAT ANY PRESSURE IN THE CHAMBER HAS
13. Close disconnect switch for compressor motor starter. BEEN COMPLETELY VENTED THROUGH SUCTION
OR DIS-CHARGE LINES OR OTHER APPROPRIATE
14. Start the unit. OPENINGS OR CONNECTIONS.
2. THAT THE DRIVING MEANS (MOTOR, TURBINE,
SUCTION STRAINER CLEANING PROCEDURE ENGINE, ETC.) HAS BEEN “LOCKED OUT” OR MADE
1. Open disconnect switch. NONOPERATIONAL SO THAT IT CANNOT BE STARTED
WHILE WORK IS BEING DONE ON THE PUMP.
2. Isolate the package by closing all package valves to the FAILURE TO FOLLOW ABOVE LISTED PRECAUTIONARY
system. Tag all closed valves. MEASURES MAY RESULT IN SERIOUS INJURY OR DEATH.
CAUTION 1. Mark head and casing before disassembly to ensure proper

reassembly. The idler pin, which is offset in the pump head,
Open any solenoid valves or other valves that may trap must be positioned up and equal distance between port con-
liquid between the isolation valves and other package nections to allow for proper flow of liquid through the pump.
2. Remove the head capscrews.
3. With liquid injection, close the manual hand valve upstream
of YY7 and manually open YY7 by turning in the manual 3. Tilt top of head back when removing to prevent idler
opening stem (clockwise viewed from below valve). from falling off idler pin.
4. Remove idler and bushing assembly. If idler bushing
CAUTION needs replacing, see INSTALLATION OF CARBON
GRAPHITE BUSHINGS.
Failure to follow this procedure will damage valve YY7.
5. Insert a brass bar or piece of hardwood in the port
opening and between the rotor teeth to keep the shaft
4. SLOWLY vent the separator to low-side system from turning. Turn the locknut counterclockwise and
pressure using the suction check valve bypass. remove locknut. See Figure 29 or 30.
NOTICE 6. Loosen the two setscrews in the face of bearing housing

and turn the thrust bearing assembly counterclockwise
Recover or transfer all refrigerant vapor, in accordance and remove from casing. See Figure 29 or 30.
with local ordinances, before opening to atmosphere. The
7. GG, HJ, HL: Remove the snap ring from the shaft. See
Figure 29. AS, AK, AL: Remove the bearing spacer from
the shaft. See Figure 30.
CAUTION 8. Remove the brass bar or piece of hardwood from the
Oil entrained refrigerant may vaporize, causing a port opening.
sepa-rator pressure increase. Repeat transfer and
9. The rotor and shaft can now be removed by tapping on the
end of the shaft with a lead hammer or, if using a regular
5. Remove cover plate.
6. Remove strainer.
7. Clean strainer.
8. Reinstall the strainer in the proper direction (outboard
end is marked) and replace the gasket.
CAUTION
If the strainer is installed backwards, it will be damaged.
9. Pressurize and leak test. Evacuate unit to 29.88" Hg

(1000 microns).
10. First, reset solenoid valves to automatic position then
open all valves previously closed. Remove tags. Close
dis-connect switches for compressor. Start unit.
Figure 29 - Thrust-Bearing assembly (GG, HJ, HL)
Page 28 MAINTENANCE
Wash bearings in clean solvent. Blow out bearings with

compressed air. Do not allow bearings to spin; turn
them slowly by hand. Spinning bearings will damage the
race and balls. Make sure bearings are clean, then
lubricate with refrigeration oil and check for roughness.
Roughness can be determined by turning outer race by
hand. Replace the bearings if they have roughness.
Be sure shaft is free from nicks, burrs and foreign particles
that might damage mechanical seal. Scratches on shaft in
seal area will provide leakage paths under mechanical seal.
Use fine emery cloth to remove scratches or sharp edges.
DEMAND PUMP ASSEMBLY

Assembly Notes On Standard Mechanical Seal (Synthetic
Rubber Bellows Type)
Figure 30 - Thrust-Bearing assembly (AS, AK, AL) NOTICE

hammer, use a piece of hardwood between the shaft and Read carefully before reassembling pump.
hammer. The rotary member of the seal will come out with
the rotor and shaft. The seal used in this pump is simple to install and good
performance will result if care is taken during installation.
10. AS, AK, AL: Remove the bearing retainer washer. The The principle of a mechanical seal is contact between the
washer may have stayed with rotor and shaft when rotary and stationary members. These parts are lapped to
removed or is against ball bearing. See Figure 30. a high finish and their sealing effectiveness depends on
11. Remove the mechanical seal rotary member and complete contact.
spring from the rotor and shaft assembly. Prior to installing the rotary portion of the mechanical seal,
12. GG, HJ, HL: Remove inner snap ring and single-row prepare and organize the rotor shaft, head and idler
ball bearing from the casing. assem-blies, and appropriate gaskets for quick assembly
AS, AK, AL: Remove single-row ball bearing from casing. Once the rotary portion of the mechanical seal is installed
on the rotor shaft, it is necessary to assemble parts as
13. Remove seal seat or stationary part of seal from casing. quickly as possible to ensure that the seal does not stick
14. Disassemble the thrust-bearing assembly. to the shaft in the wrong axial position. The seal will stick
to the shaft after several minutes setting time.
GG, HJ, HL: Remove outer snap ring from the bearing
housing and remove the ball bearing. See Figure 29. Never touch sealing faces with anything except clean
hands or clean cloth. Minute particles can scratch the seal
AS, AK, AL: Loosen the two set screws in flange outside faces and cause leakage.
diameter. Rotate end cap and lip seal counterclockwise
and remove. Remove the ball bearing. See Figure 30. 1. Coat the idler pin with refrigeration oil and place idler
and bushing on idler pin in the head. If replacing a carbon-
The casing should be examined for wear, particularly in graphite bushing, refer to "INSTALLATION OF CARBON
the area between ports. All parts should be checked for GRAPHITE BUSHINGS".
wear before the pump is put together.
2. Clean rotor hub and casing seal housing bore. Make
When making major repairs, such as replacing a rotor and sure both are free from dirt and grit. Coat outer diameter of
shaft, it is advisable to also install a new mechanical seal, seal seat and inner diameter of seal housing bore with
head and idler pin, idler, and bushing. See refrigera-tion oil.
INSTALLATION OF CARBON GRAPHITE BUSHINGS.
3. Start seal seat in seal housing bore. If force is
Clean all parts thoroughly and examine for wear or necessary, protect seal face with a clean cardboard disc
damage. Check lip seals, ball bearings, bushing, and idler and gently tap it in place with a piece of wood. Be sure
pin and replace if necessary. Check all other parts for seal seat is completely seated in the bore.
nicks, burrs, excessive wear and replace if necessary.
Figure 31 Figure 32
MAINTENANCE Page
29
4. Place tapered installation sleeve on shaft. Refer to Figure AS, AK, AL: Install the ball bearing into the bearing housing.
32. Sleeve is furnished with GG, AS, AK, and AL replacement Install the lip seal in the bearing housing end cap. The lip
mechanical seals. Coat rotor shaft, tapered installation sleeve, should face towards the end of the shaft. Put the bearing
and inner diameter of mechanical seal rotary member with a spacer collar in the lip seal and install in the bearing housing
generous amount of refrigeration oil. Petrolatum may be used and tighten the set screws securely. See Figure 30.
but grease is not recommended. 16. Insert a brass bar or piece of hardwood through the
5. Place seal spring on the shaft against the rotor hub. port opening between the rotor teeth to keep the shaft
Refer to Figure 32. from turning.
6. Slide rotary member, with lapped contact surface facing 17.Start the thrust bearing assembly into casing. Turn by hand
away from the spring, over installation sleeve on shaft until until tight. This forces the rotor against the head. Replace and
just contacting the spring. Do not compress the spring. tighten the locknut or shaft.
Re-move the installation sleeve. 18. Remove the brass bar or hardwood from port opening.
7.Coat the rotor shaft with refrigeration oil. Install the rotor 19. Adjust pump end clearance, refer to “Thrust Bearing
and shaft into the casing, slowly pushing until the ends of Adjustment.”
the rotor teeth are just below the face of the casing. Take
care not to damage the seal seat.
8. Leave the rotor in this position. Withdrawal of rotor and DANGER
shaft may displace the carbon seal rotating face and result BEFORE STARTING PUMP, ENSURE THAT ALL
in damage to the seal. DRIVE EQUIPMENT GUARDS ARE IN PLACE.
9. Place O-ring gasket on the head and install head and idler FAILURE TO PROPERLY MOUNT GUARDS MAY
assembly on pump. Pump head and casing were marked RESULT IN SERIOUS INJURY OR DEATH.
before disassembly to ensure proper reassembly. If not, be
sure the idler pin, which is offset in pump head, is positioned THRUST BEARING ADJUSTMENT
up and equal distance between port connections to allow for Loosen two screws in face of thrust-bearing assembly.
proper flow of liquid through the pump. See Figures 29 or 30.
10. Tighten the head capscrews evenly. If shaft cannot be rotated freely, turn thrust-bearing assembly
11. If the pump was equipped with a relief valve and was counterclockwise until shaft can be turned easily.
removed during disassembly, install on the head with new 1. While turning rotor shaft, rotate thrust-bearing assembly
O-Rings or gaskets. The relief valve adjusting screw cap clockwise until noticeable drag occurs. This is zero end
must always point towards the suction port. clearance.
12.In 2005, the use of single seal bearings were phased 2. Mark position of bearing housing with respect to the casing.
out. Pumps now use “Sealed for Life” bearings that have
3. Rotate thrust-bearing assembly counterclockwise the
seals on both sides. The new bearings can be installed
either side first and do not need to be packed with grease. distance listed below as measured on outside of bearing
For older models with single seal bearings, pack the inner housing.
ball bearing with multi-purpose grease, NLGI #2. 4. Tighten two setscrews in face of bearing housing after
GG, HJ, HL: Drive the bearing into the bore. Tap the inner adjustment is made to secure thrust-bearing assembly
race with a brass bar and lead hammer to position position.
bearing. Install the inner snap ring. For viscosities above 2500 SSU, add additional end
AS, AK, AL: Install the bearing retainer washer over the shaft clearance (0.004" for GG, HJ and HL size pumps and
before installing the ball bearing. Install the ball bearing in the 0.005" for AS, AK and AL size pumps).
casing with sealed side towards head end of the pump. Drive Pump Distance (in.) on O.D. End Clearance
the bearing into the bore. Tap the inner race with a brass bar
Size of Bearing Housing (in.)
and lead hammer to position the bearing.
GG 7/16 .003
13. GG, HJ, HL: Install the shaft snap ring in groove in the
shaft. See Figure 29. HJ, HL 9/16 .003
AS, AK, AL 1/2 .003
AS, AK, AL: Install the bearing spacer over the shaft and
against the single row ball bearing. See Figure 30. INSTALLATION OF CARBON GRAPHITE BUSHINGS
14. Pack the lubrication chamber between the inner ball When installing carbon graphite bushings, extreme care
bearing and double row ball bearing in the thrust bearing must be taken to prevent breaking. Carbon graphite is a
as-sembly approximately one-half full of multi-purpose brittle material and easily cracked. If cracked, the bushing
grease, NLGI #2. The thrust bearing assembly will take will quickly disintegrate. Using a lubricant and adding a
the remaining space. See Figures 29 or 30. chamfer on the bushing and the mating part will help in
15. Pack the double row ball bearing with multipurpose installation. The additional precautions listed below must
grease, NLGI #2. be followed for proper installation:
GG, HJ, HL: Install the ball bearing into the bearing 1. A press must be used for installation.
housing with shield side toward the coupling end of the 2. Be certain bushing is started straight.
shaft. See Figure 29. Install the snap ring into bearing
3. Do not stop pressing operation until bushing is in proper
housing to retain ball bearing. This snap ring has a
tapered edge to fit tapered groove in bearing housing. The position. Starting and stopping will result in a cracked bushing.
tapered edge is located away from the ball bearing. 4. Check bushing for cracks after installation.
Page 30 MAINTENANCE
TROUBLESHOOTING THE DEMAND PUMP Some of the following may also help pinpoint the problem:
1. Pump does not pump.
DANGER a. Lost its prime - air leak, low level in tank.
b. Rotating in wrong direction.
BEFORE OPENING ANY VIKING PUMP LIQUID
c. Motor does not come up to speed.
CHAM-BER (PUMPING CHAMBER, RESERVOIR, d. Suction and discharge valves not open.
JACKET, ETC.) ENSURE: e. Strainer clogged.
1. THAT ANY PRESSURE IN THE CHAMBER HAS f. Relief valve set too low, relief valve poppet stuck open.
BEEN COMPLETELY VENTED THROUGH SUCTION g. Pump worn out.
OR DIS-CHARGE LINES OR OTHER APPROPRIATE h. Any changes in the liquid system, or operation that
OPENINGS OR CONNECTIONS. would help explain the trouble, e.g. new source of
2. THAT THE DRIVING MEANS (MOTOR, TURBINE, supply, added more lines, inexperienced operators,
ENGINE, ETC.) HAS BEEN “LOCKED OUT” OR MADE etc.
NONOPERATIONAL SO THAT IT CANNOT BE STARTED i. Tighten end clearance.
WHILE WORK IS BEING DONE ON THE PUMP. j. Head position incorrect.
FAILURE TO FOLLOW ABOVE LISTED PRECAUTIONARY 2. Pump starts, then loses its prime.
MEASURES MAY RESULT IN SERIOUS INJURY OR DEATH. a. Low level in tank.
b. Liquid vaporizing in the suction line.
Mark valve and head before disassembly to ensure proper c. Air leaks or air pockets in the suction line; leaking air
reassembly. through packing or mechanical seal.
If trouble does develop, one of the first steps toward find- d. Worn out.
ing the difficulty is to install a vacuum gauge in the suction 3. Pump is noisy
port and a pressure gauge in the discharge port. Readings a. Pump is being starved (heavy liquid cannot get to
on these gauges often will give a clue as to where to start pump fast enough). Increase suction pipe size or
looking for the trouble. reduce length.
b. Pump is cavitating (liquid vaporizing in the suction
Vacuum Gauge—Suction Port line). Increase suction pipe size or reduce length; if
1. High reading would indicate: pump is above the liquid, raise the liquid level closer
a. Suction line blocked - foot valve stuck, gate valve to the pump; if the liquid is above the pump,
closed, strainer plugged. increase the head of liquid.
b. Liquid too viscous to flow through the piping. c. Check alignment.
c. Lift too high. d. May have a bent shaft or rotor tooth. Straighten or
d. Line too small. replace.
2. Low reading would indicate - e. May be a foreign object trying to get into the pump
a. Air leak in suction line. through the suction port.
b. End of pipe not in liquid. 4. Pump not up to capacity
c. Pump is worn. a. Starving or cavitating - increase suction pipe size or
d. Pump is dry - should be primed. reduce length.
3. Fluttering, jumping, or erratic reading: b. Strainer partially clogged - clean.
a. Liquid vaporizing. c. Air leak in suction piping or along pump shaft.
b. Liquid coming to pump in slugs - possibly an air leak or d. Running too slowly - is motor the correct speed and
insufficient liquid above the end of the suction pipe. is it wired up correctly
c. Vibrating from cavitation, misalignment, or damaged e. Relief valve set too low or stuck open.
parts. f. Pump worn out.
g. Tighten end clearance.
Pressure Gauge - Discharge Port h. Head position incorrect.
1. High reading would indicate: 5. Pump takes too much power.
a. High viscosity and small and/or long discharge line. a. Running too fast - is correct motor speed, reducer
b. Gate valve partially closed. ratio, sheave size, etc. being used.
c. Filter plugged. b. Liquid more viscous than unit sized to handle - heat
d. Vertical head did not consider a high specific gravity the liquid, increase the pipe size, slow the pump
liquid. down, or get a bigger motor.
e. Line partially plugged from buildup on inside of pipe. c. Discharge pressure higher than calculated - check with
f. Liquid in pipe not up to temperature. pressure gauge. Increase size or reduce length of pipe,
g. Liquid in pipe has undergone a chemical reaction reduce speed (capacity), or get bigger motor.
and has solidified. d. Pump misaligned.
h. Relief valve set too high. e. Extra clearance on pumping elements may not be
2. Low reading would indicate: sufficient for operating conditions. Check parts for
a. Relief valve set too low evidence of drag or contact in pump and increase
b. Relief valve poppet not seating properly. clearance where necessary
c. Too much extra clearance. 6. Rapid Wear.
d. Pump worn.
Examination of a pump that has gradually lost its ability to
3. Fluttering, jumping, or erratic reading: deliver capacity or pressure would show a smooth wear pat-
a. Cavitation. tern on all parts. Rapid wear shows up as heavy grooving,
b. Liquid coming to pump in slugs. galling, twisting, breaking, or similar severe signs of trouble.
c. Air leak in suction line.
d. Vibrating from misalignment or mechanical problems.
MAINTENANCE Page
31
RECOMMENDED MAINTENANCE PROGRAM the 6 month vibration analysis is not required. Frick PhD
provides continuous vibration monitoring that fulfills the
In order to obtain maximum compressor unit performance
maintenance requirement. Should the Frick PhD have an
and ensure reliable operation, a regular maintenance
alarm or shut down event, a full spectrum vibration
program should be followed (see Maintenance Schedule):
analysis would then be required to specifically identify the
The compressor unit should be checked daily for leaks, cause of the alarm or shut down.
ab-normal vibration, noise, and proper operation. A log
In addition, a Frick compressor package without PhD
should also be maintained. Initial oil analysis and vibration
moni-toring already in operation can be retrofitted with the
analysis should be done at start-up and continued per the
Frick PhD on- board vibration monitoring system to fulfill
mainte-nance schedule.
the vibration maintenance recommendation. However, it is
Vibration analysis is recommended every 6 months to ensure also necessary to establish a current baseline vibration
that the internal components of the screw compressor are in with a full spectrum analysis in order for the PhD retrofit to
compliance with expected vibration levels, based on the initial, be compliant.
full spectrum baseline performed at start-up. If the Frick PhD
on-board vibration monitoring system is utilized,
MAINTENANCE SCHEDULE
Recommended schedule for Frick screw compressor package preventive maintenance operations.
FREQUENCY OR HOURS OF OPERATION (MAXIMUM)
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
15,000
25,000
35,000
45,000
55,000
65,000
75,000
85,000
95,000
1000
5000
8000
200
MAINTENANCE
Change Oil As Directed By Oil Analysis

Oil Analysis  Every 6 Months
Replace Oil Filters (g)  As Directed By Oil Analysis
Clean Oil Strainers           
Clean Liquid Strainers           
Replace Coalescers   
Check and Clean Suction Strainer           
Check Coupling (a)  Annually Regardless of Operating Hours
Suction & Disch Flange Bolts (b)                      
VFD Units Check Skip Freq. (c) Check Annually
Check Electrical Connections (d)                    
Check Sensor Calibration (e)                     
Vibration Analysis (f) Every 6 Months, More Frequently If Levels Increase
Replace Shaft Seal When Leak Rate Exceeds 7 - 8 Drops Per Minute
a. Check bolts, shim packs, center inserts, keys, and all bolt torques.
b. Verify tightness of bolts on suction and discharge flanges. See table below for torque requirements.
c. Units with variable speed drives - check for excess vibration and skip frequencies any time unit operating conditions change.
d. Check and torque all terminals in the processor and starter panel per the specification posted in the enclosure.
e. Check calibration of Slide Valve, Slide Stop, pressures and temperatures. Calibration should be conducted with NIST certified devices.
f. Baseline vibration analysis is required during initial commissioning. Vibration measurement must be carried out continuously to obtain
optimum preventive control on bearings. If not continuously controlled, then every 6 months, more frequently if levels increase. See
additional notes in "Recommended Maintenance Program" section above.
g. The filter may need to be changed more frequently based on differential pressure or as directed by oil analysis.
Motor Flange to Compressor Discharge Flange

Compressor Compressor Tunnel (1) to Separator Flange (2)
RXF Model Model Bolt Size (in.) Torque (ft-lb) Bolt Size (mm) Torque (ft-lb)
12, 15, 19 XJF 95S,M,L 1/2 or 5/8 60 M20 X 2.5 80
24, 30, 39, 50 XJF 120S,M,L 1/2 or 5/8 60 M20 X 2.5 80
58, 68, 85, 101 XJF 151A,M,L,N 5/8 or 3/4 145 M22 X 2.5 80
Compressor Compressor Suction Flange Strainer Trap
RXF Model Model Torque (2) (ft-lb) Bolt Size (mm) Torque (2) (ft-lb)
12, 15, 19 XJF 95S,M,L 180 M20 X 2.5 180
24, 30, 39, 50 XJF 120S,M,L 250 M22 X 2.5 250
58, 68, 85, 101 XJF 151A,M,L,N 300 M24 X 3.0 470
1. Based on metal to metal contact.
2. Based on: Gaskets: Garlock® Blue-Gard® 3300; Bolts: class 8.8 or stronger hex head bolts, lightly oiled and clean
Page 32 MAINTENANCE
Figure 33 - Lubrication Schedule And Instructions
VIBRATION ANALYSIS 1. Only use Frick® oil filter elements or warranty claim
Periodic vibration analysis can be useful in detecting may be denied.
bearing wear and other mechanical failures. If vibration 2. Participate in a regular, periodic oil analysis program to
analysis is used as a part of your preventive maintenance maintain oil and system integrity. Oil Analysis Kit part
program, take the following guidelines into consideration. num-ber: 333Q0001853.
1. Always take vibration readings from exactly the same 3. Oil samples for analysis should be taken after the oil filter. A
places, at exactly the same percent of load. ¼" purge valve is provided between the filter and compressor.
2. Use vibration readings taken from the new unit at
start-up as the base line reference.
MOTOR BEARINGS
3. Evaluate vibration readings carefully as the instrument
range and function used can vary. Findings can be easily CAUTION
misinterpreted. Lubricate motor bearings properly before start- up.
4. Vibration readings can be influenced by other Maintain subsequent lubrication as recommended
equipment operating in the vicinity or connected to the by the motor manufacturer. See Figure 33.
same piping as the unit. For additional information,
request Frick publica-tion 070.902-IB.
® OPERATING LOG
OIL QUALITY and ANALYSIS The use of an operating log, as shown in this manual (see
Table of Contents...FORMS), permits thorough analysis of
High quality refrigeration oil is necessary to ensure the operation of a refrigeration system by those
compres sor longevity and reliability. Oil quality will rapidly responsible for its maintenance and servicing. Continual
deteriorate in refrigeration systems containing moisture recording of gauge pressures, temperatures, and other
and air or other contaminants. In order to ensure the pertinent informa-tion enables the observer and
quality of the refrigera tion oil in the compressor unit. serviceman to be constantly familiar with the operation of
the system and to recognize immediately any deviations
WARNING from normal operating condi-tions. It is recommended that
readings be taken at least every four hours.
or types. Mixing of oils may cause excessive oil TROUBLESHOOTING GUIDE
gas or oil leakage and catastrophic compressor failure. Successful problem solving requires an organized approach
to define the problem, identify the cause, and make the proper
correction. Sometimes it is possible that two relatively obvi-
NOTICE ous problems combine to provide a set of symptoms that can
The Frick oil charge shipped with the unit is the best mislead the troubleshooter. Be aware of this possibility and
suited lubricant for the conditions specified at the time avoid solving the “wrong problem”.
of purchase. If there is any doubt due to the refrigerant,
operating pressures, or temperatures, refer to Frick Oil
publication 160.802-SPC for guidance.
MAINTENANCE Page
33
ABNORMAL OPERATION PRESSURE TRANSDUCERS - TESTING

ANALYSIS and CORRECTION Test Procedure:
Four logical steps are required to analyze an operational 1. Shut compressor down and allow pressures to equalize.
problem effectively and make the necessary corrections:
2. Isolate suction transducer (PE-4) from unit and depres-
1. Define the problem and its limits. surize.
2. Identify all possible causes.
3. Test each cause until the source of the problem is found. NOTICE
4. Make the necessary corrections. Recover or transfer all refrigerant vapor, in accordance
The first step in effective problem solving is to define the with local ordinances, before opening to atmosphere.
limits of the problem. If, for example, the compressor pe- 3. Measure the DC voltage of (PE-4) on connector (P6A) (ter-
riodically experiences high oil temperatures, do not rely on minals 2 and 3) on the analog board with a digital voltmeter.
this observation alone to help identify the problem. On the
basis of this information, the apparent corrective measure 4. The voltage reading should be between 1.48 VDC and
would appear to be a readjustment of the liquid injection 1.72 VDC at standard atmospheric pressure (14.7 PSIA or
system. Lowering the equalizing pressure on the thermal 1 PSIG). When checking transducers at higher elevations, an
expansion valve would increase the refrigerant feed and allowance in the readings must be made by subtracting
the oil temperature should drop. approximately 0.02 VDC per 1000 feet of elevation above sea
level. Barometric pressure can generally be ignored but in
If the high oil temperature was the result of high suction extreme cases may be compensated for by adding/sub-
superheat, however, and not just a matter of improper liquid tracting 0.002 VDC for each 0.1 inch of barometric pressure
injection adjustment, increasing the liquid feed could lead to (adjusted to sea level) above/below 0 PSIG. Therefore, if (PE-
other problems. Under low load conditions the liquid injection 4) is measured at 5000 feet elevation under relatively normal
system may have a tendency to overfeed. The high suction weather conditions, the output voltage should differ by 0.10
superheat condition, moreover, may only be temporary. When VDC to read between 1.38 VDC and 1.62 VDC.
system conditions return to normal, the unit's liquid injection
will overfeed and oil temperature will drop. In solv-ing the 5. Subtract 1 from the voltage.
wrong problem a new problem was created.
6. Multiply by 25.
The following list of abnormal system conditions can
7.This result is the absolute suction pressure (PSIA). Subtract
cause abnormal operation of the RXF compressor unit:
14.7 to obtain PSIG which the Operating display will indicate.
1. Insufficient or excessive refrigeration load. 8. Isolate the oil pressure transducers (PE-1 & PE-2) from
2. Excessively high suction pressure.
the package and depressurize.
3. Excessively high suction superheat.
4. Excessively high discharge pressure.
5. Inadequate refrigerant charge or low receiver level. NOTICE
6. Excessively high or low temperature coolant to the oil Recover or transfer all refrigerant vapor, in accordance
cooler. with local ordinances, before opening to atmosphere.
7. Liquid return from system (carryover).
8. Refrigerant underfeed or overfeed to evaporators. 9. Measure the voltage of (PE-1 & PE-2) on connector
9. Blocked tubes or plates in water-cooled oil cooler from (P5A) (terminals 5 and 6) on the analog board.
high mineral content of water.
10. Insufficient evaporator or condenser sizing. 10. The voltage reading should be between 1.1 VDC and
11. Incorrect refrigerant line sizing. 1.29 VDC at standard atmospheric pressure. (PE-1 & PE-
12. Improper system piping. 2) and (PE-3) have a span of 500 PSI as compared to
13. Problems in electrical service to compressor unit. (PE-4) with a span of 200 PSI. Therefore, atmospheric
14. Air and moisture present in the system. pressure changes have a lesser effect which is 0.0067
VDC per 1000 feet of elevation and 0.00067 VDC per 0.1
Make a list of all deviations from normal plant operation inch Hg barometric de-viation.
and normal compressor unit operation. Delete any items
which do not relate to the symptom and separately list 11. Subtract 1.2 from the voltage.
those items that might relate to the symptom. Use the list 12. Multiply by 75, the result will be PSIG.
as a guide to further investigate the problem.
13. Since the discharge pressure (PE-3) cannot be closed off
The second step in problem solving is to decide which items from its sensing point (code requirements), remove all
on the list are possible causes and which items are additional transducers from atmosphere and open them to their sensing
symptoms. High discharge temperature and high oil tempera- points so all transducers can equalize to separator pressure.
ture readings may both be symptoms of a problem and not 14. Measure the voltage of (PE-3) on connector (P5B) (ter-
casually related. High suction superheat or a low receiver minals 5 and 6) on the analog board.
level, however, could cause both symptoms.
15. Test complete.
The third step is to identify the most likely cause and take
action to correct the problem. If the symptoms are not PRESSURE TRANSDUCERS REPLACEMENT
relieved, move to the next item on the list and repeat the
procedure until you have identified the cause of the 1. Shut off control power.
problem. Once the cause has been identified and con- 2. Close the applicable transducer isolation valve.
firmed, make the necessary corrections.
Page 34 MAINTENANCE
PRESSURE TRANSDUCER CONVERSION DATA

100 psi 200 psi 300 psi 500 psi
Sensor Range - PSIG* Range - PSIG* Range - PSIG* Range - PSIG*
Voltage low high low high low high low high
1.0 29.92" 19.74" 29.92" 9.57" 29.92" 7.0" 29.92" 4.10
1.1 29.92" 14.65" 29.92" 0.30 29.92" 4.10 29.92" 16.60
1.2 29.92" 9.57" 29.92" 5.30 22.3" 11.60 17.1" 29.10
1.3 24.83" 4.48" 19.74" 10.30 7.0" 19.10 4.10 41.60
1.4 19.74" 0.30 9.57" 15.30 4.10 26.60 16.60 54.10
1.5 14.65" 2.80 0.30 20.30 11.60 34.10 29.10 66.60
1.6 9.57" 5.30 5.30 25.30 19.10 41.60 41.60 79.10
1.7 4.48" 7.80 10.30 30.30 26.60 49.10 54.10 91.60
1.8 0.30 10.30 15.30 35.30 34.10 56.60 66.60 104.10
1.9 2.80 12.80 20.30 40.30 41.60 64.10 79.10 116.60
2.0 5.30 15.30 25.30 45.30 49.10 71.60 91.60 129.10
2.1 7.80 17.80 30.30 50.30 56.60 79.10 104.10 141.60
2.2 10.30 20.30 35.30 55.30 64.10 86.60 116.60 154.10
2.3 12.80 22.80 40.30 60.30 71.60 94.10 129.10 166.60
2.4 15.30 25.30 45.30 65.30 79.10 101.60 141.60 179.10
2.5 17.80 27.80 50.30 70.30 86.60 109.10 154.10 191.60
2.6 20.30 30.30 55.30 75.30 94.10 116.60 166.60 204.10
2.7 22.80 32.80 60.30 80.30 101.60 124.10 179.10 216.60
2.8 25.30 35.30 65.30 85.30 109.10 131.60 191.60 229.10
2.9 27.80 37.80 70.30 90.30 116.60 139.10 204.10 241.60
3.0 30.30 40.30 75.30 95.30 124.10 146.60 216.60 254.10
3.1 32.80 42.80 80.30 100.30 131.60 154.10 229.10 266.60
3.2 35.30 45.30 85.30 105.30 139.10 161.60 241.60 279.10
3.3 37.80 47.80 90.30 110.30 146.60 169.10 254.10 291.60
3.4 40.30 50.30 95.30 115.30 154.10 176.60 266.60 304.10
3.5 42.80 52.80 100.30 120.30 161.60 184.10 279.10 316.60
3.6 45.30 55.30 105.30 125.30 169.10 191.60 291.60 329.10
3.7 47.80 57.80 110.30 130.30 176.60 199.10 304.10 341.60
3.8 50.30 60.30 115.30 135.30 184.10 206.60 316.60 354.10
3.9 52.80 62.80 120.30 140.30 191.60 214.10 329.10 366.60
4.0 55.30 65.30 125.30 145.30 199.10 221.60 341.60 379.10
4.1 57.80 67.80 130.30 150.30 206.60 229.10 354.10 391.60
4.2 60.30 70.30 135.30 155.30 214.10 236.60 366.60 404.10
4.3 62.80 72.80 140.30 160.30 221.60 244.10 379.10 416.60
4.4 65.30 75.30 145.30 165.30 229.10 251.60 391.60 429.10
4.5 67.80 77.80 150.30 170.30 236.60 259.10 404.10 441.60
4.6 70.30 80.30 155.30 175.30 244.10 266.60 416.60 454.10
4.7 72.80 82.80 160.30 180.30 251.60 274.10 429.10 466.60
4.8 75.30 85.30 165.30 185.30 259.10 281.60 441.60 479.10
4.9 77.80 87.80 170.30 190.30 266.60 289.10 454.10 491.60
5.0 80.30 90.30 175.30 195.30 274.10 296.60 466.60 504.10
At 0 psig 1.388 V 1.788 V 1.094 V 1.494 V 1.046 V 1.346 V 0.968 V 1.268 V
* Below 0 PSIG measured in inches of mercury.
TRANSDUCER CONNECTION
NOTICE Suction Pressure PE-4
To change the discharge pressure transducer (PE-3), it will Discharge Pressure PE-3
be necessary to depressurize the entire compressor Oil Pressure PE-1 & PE-2
package. Follow "General Instructions For Replacing Com-
5. Unscrew the transducer using a wrench on the metal hex at
pressor Unit Components" section before going to step 3.
the base of the transducer. DO NOT ATTEMPT TO LOOSEN
OR TIGHTEN TRANSDUCERS BY THEIR TOP CASING.
CABLE COLOR CODE 6. Install new transducer, reconnect DIN connector, and
1 PIN 1 + SUPPLY retighten DIN connector screw.
PIN 2 DC COMMON 7. Recalibrate.
3
2 PIN 3 SIGNAL
NOTICE
CASE GND If replacing older hard-wired transducer, cut cable at
back of old transducer and rewire to the Danfoss unit.
Figure 34 - Pressure Transducer Color Key
8. Reopen the transducer isolation valve or compressor
3. Refer to Figure 34 to identify wiring harness connectors. package isolation valves.
4. Remove DIN connector screw, then remove DIN connector
9. Turn on control power.
from the transducer.
MAINTENANCE Page
35
SLIDE VALVE TRANSMITTER 4. Apply thermal compound to new sensor assembly,

REPLACEMENT - SLIDE STOP insert into thermal well, and tighten knurled ring.
5. Apply DIN connector plug to transmitter.
The Slide Valve Transmitter (Figure 35) is located on the
right side of the compressor (facing shaft) at the inlet end. 6. Turn on control power.
The linear transmitter with hermetic enclosure is based on
the inductive measuring principle. It features removable NOTICE
electronics (from the sensor well) eliminating the need to
For calibration instructions, refer to Quantum ™HD
evacuate the compressor for replacement. This type of
Op-erator's Manual 090.040-O.
transmitter is dedicated to volume ratio control and has no
user adjustments.
OIL LEVEL TRANSMITTER
1. Shut off control power. REPLACEMENT
2. Remove DIN connector plug from transmitter.
3. Loosen set screws. The Oil Level Transmitter is located on the front of the
4. Remove transmitter unit. sepa-rator near the bottom/center. See Figure 37.
5. Install new transmitter unit.
6. Tighten set screws.
8. Turn on control power.
NOTICE
For calibration of the Slide Valve unit, refer to the Ana-
log Calibration instructions in publication 090.040-O.
Figure 37 - Oil Level Transmitter

The linear transmitter with hermetic enclosure is based on the
capacitive measuring principle. It features removable
electronics (from the sensor well) eliminating the need to
evacuate the compressor for replacement. This transmitter is
dedicated to oil level control and has no user adjustments.
Figure 35 - Slide Valve Transmitter
TEMPERATURE SENSOR REPLACEMENT

CAUTION
If it is necessary to replace the well, the separator
must be purged and the oil drained. Refer to the
section "CHANGING OIL."
1. Shut off control power.
2. Remove DIN connector plug from transmitter.
3. Loosen set screws.
4. Remove transmitter unit.
5. Install new transmitter unit.
6. Tighten set screws.
Figure 36 - Temperature Transmitter 8. Turn on control power.
TEMPERATURE and/or PRESSURE
CAUTION ADJUSTMENT
This device is static sensitive. Please follow proper All temperature and pressure sensors are factory set. If cali-
ESD procedures when handling. bration is required, refer to Analog Calibration for tempera-
ture or pressure in QUANTUM™HD publication 090.040-O.
1. Shut off control power.
2. Remove DIN connector plug from transmitter. See Figure 36. BARE COMPRESSOR MOUNTING
3. Unscrew knurled ring and remove transmitter unit. Refer to publication 070.660-SM.
Page 36 MAINTENANCE
TROUBLESHOOTING THE COMPRESSOR

SYMPTOM PROBABLE CAUSES and CORRECTIONS
EXCESSIVE NOISE and Loose bolts on compressor mounting. Tighten bolts.
VIBRATION
No oil getting to compressor. Check oil level, oil filter and oil pressure.
Bearing damage or excessive wear.
Coupling loose on shaft. Tighten coupling. Replace if damaged.
Volumizer not adjusted correctly. Readjust.
Refrigerant flood-back. Correct system problem.
TROUBLESHOOTING THE OIL SEPARATOR

GRADUAL OIL LOSS WITH AN Maintaining too high an oil level. Lower level.
OIL LEVEL IN THE COALESCER
SECTION SIGHT GLASS Refrigerant carryover or liquid injection overfeeding. Correct operation.
Contaminated oil or damaged coalescer filter elements. Replace oil charge and coalescers.
Coalescers may be loose. Tighten.
Oil return valve closed. Open return valve.
Return oil strainer blocked. Clean strainer.
RAPID LOSS WITH NO OIL Compressor unit suction check valve did not close on shutdown. Repair valve.
LEVEL IN THE COALESCER
SECTION SIGHT GLASS Bypass open around suction check valve. Close bypass valve.
Bypass valve opened too far. Tighten
Coalescer filter elements not seated properly. Replace oil charge and coalescers.
Oil viscosity too low. Verify correct oil, replace if incorrect.
High system CFM. System operating out of design conditions (High suction and Low discharge
pressures).
Refrigerant flood-back. Correct system problem.
Two or more compressors piped to a single economizer vapor port. Verify check valves are in
working order.
TROUBLESHOOTING THE LIQUID INJECTION OIL COOLING SYSTEM

HIGH OIL TEMPERATURE Insufficient liquid supply. Check receiver level. Check strainer.
Suction superheat too high. Correct system problem.
Liquid strainer blocked. Clean strainer.
Operating conditions significantly different from design.
Malfunctioning Vi Control Solenoids. See function check of the compressor
"Volumizer II Vi Control" for further detail.
Check motor valve operation and calibration.
Check calibration of analog output.
LOW OIL TEMPERATURE Equalizing pressure too low. Raise pressure.

Suction superheat too low or refrigerant flood back on compressor. Correct system problem.
Operating conditions significantly different from design.
Check motor valve operation and calibration.
Check calibration of analog output.
OIL TEMPERATURE System conditions rapidly fluctuate causing liquid injection system to overrespond. Stabilize
FLUCTUATES system operation.
Check calibration and operation of motor valve - Adjust P & ID setpoints for analog output.
MAINTENANCE Page 37
TROUBLESHOOTING THE HYDRAULIC SYSTEM

SLIDE VALVE WILL NOT LOAD Solenoid coil burned out. Replace coil.
OR UNLOAD
HV2 needle valve closed. Open valve.
Solenoid spool may be stuck or centering spring broken. Free spool or replace spring.
Solenoid may be mechanically actuated by inserting a piece of 3/16" rod against armature pin and pushing
spool to opposite end. Push “A” side to confirm unload capability. If valve works, problem is electrical.
Solenoid valve piston hung in bore or bolt loose. Check piston or tighten bolt.
SLIDE VALVE WILL LOAD BUT YY1 solenoid coil burned out. Replace coil.
WILL NOT UNLOAD
Check valve in solenoid valve piston bad. Replace or repair.
Dirt inside solenoid valve preventing valve from operating both ways. Clean valve.
Solenoid may be mechanically actuated by inserting a piece of 3/16" rod against armature pin and pushing
spool to opposite end. Push YY1 valve to confirm unload capability. If valve works, problem is electrical.
Slipper seals worn out or damaged. Replace.
Check valve in slide valve piston sticking. Remove and clean check valve.
SLIDE VALVE WILL UNLOAD YY2 solenoid coil burned out. Replace coil.
BUT WILL NOT LOAD
Dirt inside solenoid valve preventing valve from operating both ways. Clean valve.
Solenoid may be mechanically actuated by inserting a piece of 3/16" rod against armature pin
and pushing spool to opposite end. If valve works, the problem is electrical.
SLIDE STOP WILL NOT FUNC- Solenoid coil burned out. Replace coils.
TION IN EITHER DIRECTION
Solenoid valve sticking. Replace valve.
SLIDE VALVE and/or SLIDE Slipper seals worn out or damaged.
STOP WILL NOT MOVE
Unloader spindle or slide valve jammed.
Slide stop indicator rod jammed.
Page 38 MAINTENANCE
COMPRESSOR PORT LOCATIONS - RXF 12 - 19

PORT CONNECTION SIZE
1 3/4 - 14 NPTF
3 3/8 - 18 NPTF
4 3/8 - 18 NPTF
5 3/4 - 14 NPTF
7 1/4 - 18 NPTF
8 3/8 - 18 NPTF
10 1/4 - 18 NPTF
11 1/4 - 18 NPTF
12 1/4 - 18 NPTF
16 3/4 - 14 NPTF
18 1/2 - 14 NPTF
20 1/4 - 18 NPTF
21 3/4 - 14 NPTF
22 1/4 - 18 NPTF
MAINTENANCE Page 39

PORT CONNECTION SIZE
1 1 - 11½ NPTF
2 1/4 - 18 NPTF
3 3/8 - 18 NPTF
4 3/8 - 18 NPTF
5 1 - 11½ NPTF
6 1/2 - 14 NPTF
7 1/4 - 18 NPTF
8 1/4 - 18 NPTF
10 1/4 - 18 NPTF
11 1/4 - 18 NPTF
12 1/4 - 18 NPTF
15 3/8 - 18 NPTF
16 3/4 - 14 NPTF
18 1/8 - 27 NPTF
19 1/4 - 18 NPTF
20 1/8 - 27 NPTF
21 3/8 - 18 NPTF
22 1/4 - 18 NPTF
Page 40 MAINTENANCE
SAE STRAIGHT THREAD O-RING FITTINGS - ASSEMBLY PROCEDURE FOR RXF 58 - 101
When performing maintenance or replacing the compres- 1. Inspect components to ensure that male and female
sor, the hydraulic tubing may need to be removed and report threads and sealing surfaces are free of burrs, nicks
installed. The following procedure outlines the proper and scratches or any foreign material.
installation of SAE straight thread fittings to SAE straight
thread ports. 2. If the O-ring is not pre-installed to the fitting on the
male end, install the proper size O-ring.
The male and female ends of SAE straight thread O-ring ports
have UN/UNF straight threads. An elastomeric O-ring is fitted 3. Lubricate the O-ring with a light coating of system oil or
to the male end. On assembly, the O-ring is firmly sandwiched petroleum jelly.
between the angular sealing surface of the fe-male port and
4. Screw the fitting into the female port until the hex flat
the shoulder of the male end. Sealing is thus affected and
contacts the port face. Light wrenching may be necessary.
maintained by the O-ring compression which results from the
clamping force generated by the tightening action. The 5. Tighten to the appropriate torque value shown in the
straight threads do not offer sealing action; they provide the Assembly Torque Table.
resistance (holding power) for service pressure.
ASSEMBLY TORQUE TABLE
Straight and Adjustable Fittings or Plugs (steel)

Assembly Torque
Fitting Size SAE Port Thread Size
Inch lb Foot lb
2 5/16 – 24 65 ± 5 5.5 ± 0.5
3 3/8 – 24 130 ± 10 11 ± 1.0
4 7/16 – 20 170 ± 10 14 ± 1.0
5 1/2 - 20 260 ± 15 22 ± 1.0
6 9/16 – 18 320 ± 20 27 ± 2.0
8 3/4 - 16 500 ± 25 42 ± 2.0
10 7/8 – 14 720 ± 30 60 ± 2.5
12 1Z\zn – 12 960 ± 50 80 ± 5.0
16 1B\zn – 12 1380 ± 75 115 ± 6.0
20 1B\, – 12 2700± 150 225 ± 12.0
24 1M\, - 12 3000 ± 160 250 ± 12.0
NOTE: Compressor port locations for RXF 58 -101 are located on the following page.
MAINTENANCE Page 41
17 - Dedicated Closed Thread

16 - Oil Pressure
11 - Thermowell (Suction Temp)
4 - High Vi
Liquid Injection
DRIVE SHAFT
1 - Main Oil Supply

16 - Oil Pressure
18 - Dedicated Capacity Valve
Vent to Suction Pressure 9 - Liquid Injection
10 - Coalescer Bleed Line
3 - Low Vi Liquid Injection
6 - Suction Pressure Bleed Line 13 - Suction
5 - Economizer Pressure
COMPRESSOR
DRIVE SHAFT
7 - Closed Thread 8 - Pressure

2 - Slide Valve Piston
12 - Main Oil Injection Discharge
14 - Seal Weepage PORT CONN SIZE PORT CONN SIZE

1 1Z\zn - 12UN-2B 10 9/16 - 18UNF-2B
2 7/16 - 20UNF-2B 11 3/4 - 14 NPTF
3 1Z\zn - 12UN-2B 12 1Z\zn - 12UN-2B
4 1Z\zn - 12UN-2B 13 1/4 - 18 NPTF
5 1M\, - 12UN-2B 14 1/8 - 27 NPTF
6 9/16 - 18UNF-2B 15 1/2 - 14 NPTF
7 1Z\zn - 12UN-2B 16 9/16 - 18UNF-2B
8 7/16 - 20UNF-2B 17 1Z\zn - 12UN-2B
15 - Electrical Connection 9 9/16 - 18UNF-2B 18 9/16 - 18UNF-2B
P & I DIAGRAM, LIQUID INJECTION – SINGLE PORT
COMPRESSOR LOW VI, COMPRESSOR

ECONOMIZER, OR HIGH VI,
CLOSED THREAD BOOSTER ONLY
TUBING LINE
SIGHT
SOLENOID GLASS
VALVE MOTORIZED
STRAINER EXPANSION
S VALVE
LIQUID REFRIGERANT
FROM RECEIVER
LIQUID LINE
Page 42 MAINTENANCE
P & I DIAGRAM, LIQUID INJECTION – DUAL PORT (NEW DESIGN)

3-WAY
MOTORIZED
VALVE
COMPRESSOR COMPRESSOR
LOW VI HIGH VI
M
TUBING LINE
SOLENOID
VALVE MOTORIZED
EXPANSION
STRAINER VALVE
S
LIQUID REFRIGERANT
FROM RECEIVER
LIQUID
LINE SIGHT
GLASS
P & I DIAGRAM, LIQUID INJECTION – DUAL PORT (OLD DESIGN)
YY
9
COMPRESSOR COMPRESSOR
S
SUCTION PRESS. LOW VI
COMPRESSOR
HIGH VI TUBING LINE
TO SEPARATOR
SOLENOID
VALVE MOTORIZED
EXPANSION
STRAINER VALVE
S
LIQUID REFRIGERANT
FROM RECEIVER
LIQUID
LINE SIGHT GLASS
RXF COOLING OPTIONS (See P & I Diagrams) PLATE OIL COOLER

MAINTENANCE Page
43
RXF MODELS 12 through 19 without OIL PUMP (See OIL COOLING ADDITIONS)
LEGEND*
C COMPRESSOR PE PRESSURE ELEMENT XE VIBRATION ELEMENT
CV CHECK VALVE PI PRESSURE INDICATOR XAH VIBRATION HIGH ALARM
F FILTER OR FILTER DRIER PIC/TIC PRESS./TEMP. INDICATING CONTROLLER XAHH VIBRATION HIGH SHUTDOWN
HTR HEATER PM PUMP MOTOR ZT POSITION TRANSMITTER
LG SIGHT OR LEVEL GLASS PSV PRESSURE SAFETY VALVE ZI POSITION INDICATOR
LSL OIL LEVEL SWITCH LOW PV PRESSURE VESSEL
LSLL LOW OIL LEVEL SHUTDOWN STR STRAINER * Continued following page
M MOTOR TAH HIGH TEMPERATURE ALARM
NV NEEDLE VALVE TAHH HIGH TEMP. SHUTDOWN
P PUMP TAL LOW TEMPERATURE ALARM
PAH HIGH PRESSURE ALARM TALL LOW TEMPERATURE SHUTDOWN
PAHH HIGH PRESSURE SHUTDOWN TCV TEMPERATURE CONTROL VALVE
PAL LOW PRESSURE ALARM TE TEMPERATURE ELEMENT
PALL LOW PRESSURE SHUTDOWN YY SOLENOID VALVE/EVENT VALVE
Page 44 MAINTENANCE
RXF MODELS 12 through 19 with OIL PUMP (See OIL COOLING ADDITIONS)
LEGEND (Cont.)
CONNECTIONS ** NOTES:
1 MAIN OIL SUPPLY 1. PRESSURE TRANSDUCERS INDICATE:
2 SLIDE VALVE PISTON PE-1 OIL PRESSURE
7 SUCTION PRESSURE PE-3 DISCHARGE PRESSURE
10 DISCHARGE PRESSURE PE-4 SUCTION PRESSURE
11 LIQ. INJ. BLEED LINE 2. TEMPRERATURE PROBES INDICATE:
12 COALESCER BLEED LINE TE-1 SUCTION GAS TEMPERATURE
16 THERMOWELL TE-2 DISCHARGE GAS TEMPERATURE
18 MAIN OIL INJECTION TE-3 LUBE OIL TEMPERATURE
22 CAPACITY VALVE VENT TO SUCTION TE-4 SEPARATOR OIL TEMPERATURE
3. TERMINATIONS "A" THROUGH "C" REFER TO
** Not all ports are shown. See COMPRESSOR CONNECTION POINTS FOR VARIOUS OPTIONS.
PORT LOCATIONS for all ports.
MAINTENANCE Page
45
RXF MODELS 24 throughy 50 without OIL PUMP (See OIL COOLING ADDITIONS)
LEGEND*
C COMPRESSOR PE PRESSURE ELEMENT ZT POSITION TRANSMITTER
CV CHECK VALVE PI PRESSURE INDICATOR ZI POSITION INDICATOR
F FILTER OR FILTER DRIER PIC/TIC PRESS./TEMP. INDICATING CONTROLLER
HTR HEATER PM PUMP MOTOR * Continued following page
LG SIGHT OR LEVEL GLASS PSV PRESSURE SAFETY VALVE
LSL OIL LEVEL SWITCH LOW PV PRESSURE VESSEL
LSLL LOW OIL LEVEL SHUTDOWN STR STRAINER
M MOTOR TAH HIGH TEMPERATURE ALARM
NV NEEDLE VALVE TAHH HIGH TEMP. SHUTDOWN
P PUMP TAL LOW TEMPERATURE ALARM
PAH HIGH PRESSURE ALARM TALL LOW TEMPERATURE SHUTDOWN
PAHH HIGH PRESSURE SHUTDOWN TCV TEMPERATURE CONTROL VALVE
PAL LOW PRESSURE ALARM TE TEMPERATURE ELEMENT
PALL LOW PRESSURE SHUTDOWN YY SOLENOID VALVE/EVENT VALVE
Page 46 MAINTENANCE
RXF MODELS 24 through 50 with OIL PUMP (See OIL COOLING ADDITIONS)
LEGEND (Cont.)
CONNECTIONS ** NOTES:
1 MAIN OIL SUPPLY 1. PRESSURE TRANSDUCERS INDICATE:
2 SLIDE VALVE PISTON PE-1 OIL PRESSURE
10 DISCHARGE PRESSURE PE-4 SUCTION PRESSURE
11 LIQ. INJ. BLEED LINE 2. TEMPRERATURE PROBES INDICATE:
16 THERMOWELL TE-2 DISCHARGE GAS TEMPERATURE
19 SUCTION PRESSURE TE-3 LUBE OIL TEMPERATURE
22 CAPACITY VALVE VENT TO SUCTION TE-4 SEPARATOR OIL TEMPERATURE
3. TERMINATIONS "A" THROUGH "C" REFER TO
** Not all ports are shown. See COMPRESSOR CONNECTION POINTS FOR VARIOUS OPTIONS.
PORT LOCATIONS for all ports.
MAINTENANCE Page
47
RXF MODELS 58, 68, 85, & 101 without OIL PUMP (See OIL COOLING ADDITIONS)
LEGEND *
C COMPRESSOR PE PRESSURE ELEMENT TE TEMPERATURE ELEMENT
CV CHECK VALVE PI PRESSURE INDICATOR TI TEMPERATURE INDICATOR
HTR HEATER PIC/TIC PRESS./TEMP. INDICATING CONTROLLER YY SOLENOID VALVE/EVENT VALVE
LG SIGHT OR LEVEL GLASS PM PUMP MOTOR
M MOTOR PSV PRESSURE SAFETY VALVE * See additional Legend items on opposite
OF OIL FILTER STR STRAINER
P PUMP TAH HIGH TEMPERATURE ALARM page.
PAH HIGH PRESSURE ALARM TAHH HIGH TEMP. SHUTDOWN
PAHH HIGH PRESSURE SHUTDOWN TAL LOW TEMPERATURE ALARM
PAL LOW PRESSURE ALARM TALL LOW TEMPERATURE SHUTDOWN
PALL LOW PRESSURE SHUTDOWN TCV TEMPERATURE CONTROL VALVE
Page 48 MAINTENANCE
RXF Models 58, 68, 85, & 101 with OIL PUMP and DUAL OIL FILTERS (See OIL COOLING ADDITIONS)
LEGEND (Cont.)
CONNECTIONS NOTES:
1 MAIN OIL SUPPLY 16 OIL PRESSURE 1. PRESSURE TRANSDUCERS INDICATE:
2 SLIDE VALVE PISTON 18 CAPACITY VENT VALVE TO SUCTION PE-1 OIL PRESSURE
8 DISCHARGE PRESSURE ** Not all ports are shown. See COMPRESSOR PE-4 SUCTION PRESSURE
9 LIQ. INJ. BLEED LINE PORT LOCATIONS for all ports. 2. TEMPRERATURE PROBES INDICATE:
11 THERMOWELL (SUCT. TEMP.) TE-2 DISCHARGE GAS TEMPERATURE
12 MAIN OIL INJECTION TE-3 LUBE OIL TEMPERATURE
13 SUCTION PRESSURE TE-4 SEPARATOR OIL TEMPERATURE
3. TERMINATIONS "A" THROUGH "C" REFER TO CONNEC-
TION POINTS FOR VARIOUS OPTIONS.
RXF ROTARY SCREW COMPRESSOR UNITS 070.410-IOM (NOV
MAINTENANCE 2015) Page 49
WIRING HARNESS - External for Analog Devices
Page 50 MAINTENANCE
WIRING HARNESS - AC to Heaters and Valves (External)
WIRING HARNESS - AC Conduit - Quantum to DBS Panel

PROPER INSTALLATION OF ELECTRICAL EQUIPMENT Page 51
PROPER INSTALLATION OF ELECTRONIC EQUIPMENT IN AN INDUSTRIAL ENVIRONMENT

In today’s refrigeration plants, electronic controls have cessor, a computer, or a PLC, to malfunction momentarily or
found their way into almost every aspect of refrigeration cause a complete reset of the control system. If the wire is
control. Electronic controls have brought to the industry loaded to its maximum capacity, the voltage dips are much
more precise control, improved energy savings, and larger, and the potential of a malfunction is very high. If the
operator conveniences. Electronic control devices have wire is sized one size larger than required, the voltage dips
revolutionized the way refrigeration plants operate today. are smaller than in a fully loaded supply wire and the potential
for malfunction is much lower. The NEC code book calls for
The earlier relay systems were virtually immune to radio specific wire sizes to be used based on current draw. An
frequency interference (RFI), electromagnetic interference example of this would be to use #14 gauge wire for circuits up
(EMI), and ground loop currents. Therefore installation and to 15 amps or #12 gauge wire for circuits of up to 20 amps.
wiring were of little consequence and the wiring job con-sisted Therefore, when connecting the power feed circuit to an
of hooking up the point-to-point wiring and sizing the wire electronic control panel, use #12 gauge wire for a maximum
properly. In an electronic system, improper instal-lation will current draw of 15 amp and #10 wire for a maximum current
cause problems that may outweigh the benefits of electronic draw of 20 amp. Use this rule of thumb to minimize voltage
control. Electronic equipment is susceptible to RFI, EMI, and dips at the electronic control panel.
ground loop currents which can cause equip-ment shutdowns,
processor memory and program loss, as well as erratic VOLTAGE SOURCE
behavior and false readings. Manufacturers of industrial
electronic equipment take into consideration the effects of Selecting the voltage source is extremely important for proper
RFI, EMI, and ground loop currents and incorpo-rate operation of electronic equipment in an industrial
protection of the electronics in their designs. However, these environment. Standard procedure for electronic instrumenta-
design considerations do not make the equipment immune, so tion is to provide a clean, isolated, separate-source voltage in
manufacturers require that certain installation precautions be order to prevent EMI (from other equipment in the plant) from
taken to protect the electronics from these effects. All interfering with the operation of the electronic equip-ment.
electronic equipment must be viewed as sensitive Connecting electronic equipment to a breaker panel (also
instrumentation and therefore requires careful attention to known as lighting panels or utility panels) subjects the
installation procedures. These procedures are well known to electronic equipment to noise generated by other devices
instrumentation, networking, and other professions but may connected to the breaker panel. This noise is known as elec-
not be followed by general electricians. tromagnetic interference (EMI). EMI flows on the wires that
are common to a circuit. EMI cannot travel easily through
There are a few basic practices that if followed, will minimize transformers and therefore can be isolated from selected
the potential for problems resulting from RFI, EMI and/or circuits. Use a control power transformer of the proper VA
ground loop currents. The National Electric Code (NEC) is a rating, usually provided in the compressor drive motor starter,
guideline for safe wiring practices, but it does not necessarily to isolate the electronic control panel from other equipment in
deal with procedures used for electronic control installation. the plant that generate EMI. See Figure 38.
Use the following procedures for electronic equipment instal-
lation. These procedures do not override any rules by the
NEC, but are to be used in conjunction with the NEC code
and any other applicable codes.
With exclusion of the three phase wire sizing, Frick drawing
649D4743 should be used as a reference for properly sizing
control wires and other wiring specifications.
Throughout this document the term Electronic Control Panel
is used to refer to the microprocessor mounted on the com-
pressor package or a Central Control System panel.
NOTICE
It is very important to read the installation instructions
thoroughly before beginning the project. Make sure you
have drawings and instructions with your equipment. If
not, call the manufacturer and request the proper
instructions and drawings. Every manufacturer of elec-
tronic equipment should have a knowledgeable staff,
willing to answer your questions or provide additional
information. Following correct wiring procedures will
ensure proper installation and consequently, proper
operation of your electronic equipment.
WIRE SIZING
Control power supply wires should be sized one size larger
than required for amperage draw to reduce instanta-neous
voltage dips caused by large loads such as heaters,
contactors, and solenoids. These sudden dips in voltage can
cause the electronic control panel, whether it is a micropro- Figure 38
Page 52 PROPER INSTALLATION OF ELECTRICAL EQUIPMENT
GROUNDING NEC size ratings are for safety purposes and not necessarily
for adequate relaying of noise (EMI) to earth ground to avoid
Grounding is the most important factor for successful opera- possible interference with sensitive equipment. Therefore
tion and is typically the most overlooked. The NEC states that sizing this conductor 1 – 2 sizes larger than required by code
control equipment may be grounded by using the rigid conduit will provide better transfer of this noise.
as a conductor. This worked for the earlier relay systems, but
it is in no way acceptable for electronic control equipment. Frick requirements for the ground conductor are:
Conduit is made of steel and is a poor conductor relative to an • Stranded Copper
insulated stranded copper wire. Electronic equipment reacts
• Insulated
to very small currents and must have a proper ground in order
to operate properly; therefore, stranded copper grounds are • One size larger than NEC requirements for
required for proper operation.
conventional starters
• Two sizes larger than NEC requirements for VFD starters
For proper operation, the control power ground circuit must be
• Conduit must be grounded at each end
a single continuous circuit of the proper sized insulated
stranded conductor, from the electronic control panel to the • This circuit must be complete from the motor to the
plant supply transformer (Figure 39). Driving a ground stake starter continuing in a seamless manner back to the
plant supply transformer (power source).
at the electronic control may also cause additional problems
since other equipment in the plant on the same circuits may For Direct Coupled, Package Mounted Starters, the ground
ground themselves to the ground stake causing large ground between the motor and the starter may need to be made
flow at the electronic control panel. Also, running multiple externally (Figure 40). The connection on the starter end must
ground conductors into the electronic control panel from be on the starter side of the vibration isolators. Be certain the
various locations can create multiple potentials resulting in connection is metal to metal. Paint may need to be removed
ground loop currents. A single ground wire (10 AWG or 8 to ensure a proper conductive circuit. The use of counter-sunk
AWG) from the electronic control panel, that is bonded to the star washers at the point of connec-tion at each end will
control power neutral at the secondary side of the control maximize metal to metal contact.
power transformer in the starter and then to the 3-phase
ground point, will yield the best results.
Figure 40
Figure 39
VFD APPLICATIONS
NOTICE The primary ground conductor that accompanies the three-phase

supply must be stranded copper, insulated and two sizes larger
Structural grounding can also result in multiple ground than the minimum required by the NEC or any other applicable
potentials and is also a relatively poor conductor. codes. This is necessary due to the increased generation of EMI
Therefore, this is not an acceptable method for proper which is a characteristic of a VFD output to the motor when
operation of electronic equipment. compared to a conventional starter.
There must be a ground for the three-phase power wiring.
For VFD applications, isolation of the control power, analog
This must be sized in accordance to the NEC and any
local codes relative to the highest rated circuit overload devices, and communications ground from the 3-phase
ground within the starter and the electronic control panel may
protec-tion provided in the circuit. The manufacturer may
require a larger ground conductor than what is required by be necessary. This is due to the higher noise (RFI/EMI) levels
generated between the VFD output and the motor, relative to
the NEC for proper steering of EMI from sensitive circuits.
This conduc-tor must also be insulated to avoid a conventional starter. If these grounds are left coupled by a
common back-plate in the starter/drive, this noise can be
inadvertent contact at multiple points to ground, which
could create Ground Loops. In many installations that are direct coupled to the control power, analog device, and
communications grounding and may cause unexplained
having electronic control prob-lems, this essential wire is
usually missing, is not insulated, or improperly sized. behavior and possible damage to components.
To install correctly, run a separate, properly sized (10 or 8 electrical ducts carrying 3-phase power to starters/vfd or
AWG typically) insulated ground along with and taken to motors.
ground with, the 3-phase ground at the 3-phase supply • Control power, communications, analog, or signal wiring
transformer (plant). This will require that the 3-phase ground should be run overhead (preferred) or in a separate
and the control power ground be electrically isolated except trench. If these lines are not in threaded metallic or
for the connection at the plant supply transformer. threaded PVC-coated metallic, abiding by the
This style of grounding should steer the noise (EMI/RFI) to separation requirements noted above is necessary.
earth ground, reducing the potential for it to affect the • Though not recommended, if cable trays are used,
sensitive equipment, which could occur if the grounds metallic dividers must be used for separation of
were left coupled. conductors of unlike voltages and types (AC or DC).
NOTICE NOTICE
If all other recommendations for grounding are When in doubt contact the factory or use threaded
followed, this process should not be necessary. metallic or threaded PVC coated metallic conduit.
CONDUIT WIRING PRACTICES

All national and local codes must be followed for conduit with Do not mix wires of different voltages in the same conduit. An
regard to materials, spacing and grounding. In addition, example of this would be the installation of a screw
Johnson Controls-Frick requirements must be followed compressor package where the motor voltage is 480 volts and
where they exceed or match national or local codes. Con- the electronic control panel power is 120 volts. The 480 volt
versely, there is no allowance for any practices that are circuit must be run from the motor starter to the motor in its
substandard to what is required by national or local codes. own conduit. The 120 volt circuit must be run from the motor
starter control transformer to the electronic control panel in its
Johnson Controls-Frick conduit requirements: own separate conduit. If the two circuits are run in the same
• For variable frequency drives (VFDs) of any type, threaded conduit, transients on the 480 volt circuit will be induced onto
metallic or threaded PVC-coated metallic is required for the 120 volt circuit causing functional problems with the
both the power feed (line side) from the source and electronic control panel. Metallic dividers must be used in wire
between the VFD output and the motor (load side). way systems (conduit trays) to separate unlike voltages. The
same rule applies for 120 volt wires and 220 volt wires. Also,
• PVC conduit is acceptable only when VFD rated cable never run low voltage wires for DC analog devices or serial
of the proper conductor size and ground is used. This communications in the same conduit with any AC wiring
applies to both the line side and load side of the drive. including 120 volt wires. See Figure 41.
When VFD rated cable is not used, threaded metallic or
threaded PVC-coated metallic must be used.
• When threaded metallic or threaded PVC-coated
metallic is used, it must be grounded at both ends.
• When not required to be in metal or other material by
national or local codes, conduits for the power feed (3-
phase) of constant speed starters may be PVC.
• When not required to be in metal or other material by
national or local codes, conduits between a constant
speed starter and the motor (3-phase) may be PVC.
• Any unshielded control voltage, signal, analog, or
communication wiring that does not maintain 12 inches
of separation from any 3-phase conductors for every 33
feet (10 meters) of parallel run must be in metal conduit Figure 41
which will be grounded.
Separation: (0-33 feet, 0-10 meters – 12 inches, .3 meters), Never run any wires through an electronic control panel
that do not relate to the function of the panel. Electronic
(33-66 feet, 10-20 meters – 24 inches, .6 meters)
control panels should never be used as a junction box. These
• Since PVC conduit does absolutely nothing to protect wires may be carrying large transients that will interfere with
lower voltage lines from the magnetic field effects of the operation of the control panel. An extreme example of
higher voltage conductors, running either the lower or this would be to run 480 volts from the starter through
the higher voltage lines in PVC, does not reduce these the electronic control panel to an oil pump motor.
requirements on separation. Only running in metal
conduit can relieve these requirements. When running conduit to the electronic control panel, use the
access holes (knockouts) provided by the manufacturer.
• Due to the level of EMI that can be induced onto lower
These holes are strategically placed so that the field wiring
voltage lines when running multiple feeders in a trench,
does not interfere with the electronics in the panel. Never
control power, communications, analog, or signal wiring
allow field wiring to come in close proximity with the con-troller
cannot be run in trenches that house multiple conduits/
boards since this will almost always cause problems.
Page 54 PROPER INSTALLATION OF ELECTRICAL EQUIPMENT
Do not drill into an electronic control panel to locate conduit If the electronic control panel has a starter built into the
connections. You are probably not entering the panel where same panel, be sure to run the higher voltage wires where
the manufacturer would like you to since most manufactur-ers indicated by the manufacturer. EMI from the wires can
recommend or provide prepunched conduit connections. You interfere with the electronics if run too close to the circuitry.
may also be negating the NEMA rating of the enclosure.
Drilling can cause metal filings to land on the electronics and Never daisy-chain or parallel-connect power or ground
create a short circuit when powered is applied. If you must wires to electronic control panels. Each electronic control
drill the panel, take the following precautions: panel must have its own control power supply and ground
wires back to the power source (Plant Transformer). Multiple
• First, call the panel manufacturer before drilling into the electronic control panels on the same power wires create
panel to be sure you are entering the panel at the right current surges in the supply wires, which may cause control-
place. ler malfunctions. Daisy-chaining ground wires, taking them to
• Take measures to avoid ESD (electrostatic discharge) ground at each device, allows ground loop currents to flow
to the electronics as you prep the inside of the between electronic control panels which also causes
Electronic control panel. This can be done by employing malfunctions. See Figure 42.
an antistatic wrist band and mat connected to ground.
• Cover the electronics with plastic and secure it with
masking or electrical tape.
• Place masking tape or duct tape on the inside of the
panel where you are going to drill. The tape will catch
most of the filings.
• Clean all of the remaining filings from the panel before
removing the protective plastic.
When routing conduit to the top of an electronic control panel,
condensation must be taken into consideration. Water can
condense in the conduit and run into the panel causing
catastrophic failure. Route the conduit to the sides or bottom
of the panel and use a conduit drain. If the conduit must be
routed to the top of the panel, use a sealable conduit fitting
which is poured with a sealer after the wires have been
pulled, terminated, and the control functions have been
checked. A conduit entering the top of the enclosure must
have a NEMA-4 hub type fitting between the conduit and the
enclosure so that if water gets on top of the enclosure it
cannot run in between the conduit and the enclosure. This is
extremely important in outdoor applications.
NOTICE
It is simply NEVER a good practice to enter through the
top of an electronic control panel or starter panel that does
not already have knockouts provided. If knockouts are not
provided for this purpose it is obvious this is not
recommended and could VOID WARRANTY. Figure 42
Never add relays, starters, timers, transformers, etc.
in-side an electronic control panel without first
contacting the manufacturer. Contact arcing and EMI
emitted from these devices can interfere with the
electronics. Relays and timers are routinely added to
electronic control panels by the manufacturer, but the
manufacturer knows the acceptable device types and
proper placement in the panel that will keep interference to
a minimum. If you need to add these devices, contact the
manufacturer for the proper device types and placement.
Never run refrigerant tubing inside an electronic

control panel. If the refrigerant is ammonia, a leak will
totally destroy the electronics.
COMMUNICATIONS UPS POWER AND QUANTUM™ HD PANELS

The use of communications such as serial and ethernet in Johnson Controls, Inc. does not advise nor support the use of
industrial environments are commonplace. The proper uninterrupted power supply systems for use with the
installation of these networks is as important to the proper Quantum™HD panel. With a UPS system providing shutdown
operation of the communications as all of the preceding protection for a Frick Quantum panel, the panel may not see
practices are to the equipment. the loss of the 3-phase voltage on the motor because the
UPS may prevent the motor starter contactor from dropping
Serial communications cable needs to be of the proper gauge out. With the starter contactor still energized, the compressor
based on the total cable distance of the run. Daisy-chaining is auxiliary will continue to feed an “okay” signal to the
the only acceptable style of running the communications Quantum™HD panel. This may allow the motor to be
cable. While Star Networks may use less cable, they more subjected to the fault condition on the 3-phase bus.
often than not cause problems and interruptions in communi-
cations, due to varying impedances over the varying lengths A couple of fault scenarios are: 1. The 3-phase bus has
of cable. Ground or drain wires of the communications cable power “on” and “off” in a continuous cycle manner which
are to be tied together at each daisy-chain connection and may cause the motor to overheat due to repeated exces-
only taken to ground in the central control system panel. sive in-rush current experiences. 2. The motor cycling may
damage the coupling or cause other mechanical damage
It is important to carefully consider the type of cable to be due to the repeated high torque from rapid sequential
used. Just because a cable has the proper number of conduc- motor “bumps.” 3. Prolonged low voltage may cause the
tors and is shielded does not mean it is an acceptable cable. motor to stall and possibly overheat before the motor
Johnson Controls-Frick recommends the use of Belden #9829 contactor is manually turned off.
for RS-422 communications and Belden # 9841 for RS-485 up
to 2000 feet (600 Meters) total cable length. Refer to Frick Under normal conditions, the loss of 3-phase power will
drawing 649D4743 for more detail shut down the Quantum™HD panel and it will reboot upon
proper power return. If the panel was in “Auto,” it will come
Comm Port Protection: Surge suppression for the comm back and return to running as programmed. If the unit was
ports may not be the best method, since suppression is re- in “Remote,” the external controller will re-initialize the
quired to divert excess voltage/current to ground. panel and proceed to run as required. If the panel was in
Therefore, the success of these devices is dependent on a “Manual” mode, the compressor will have to be restarted
good ground (covered earlier in this section). This excess manually after the 3-phase bus fault/interruption has been
energy can be quite high and without a proper ground, it cleared / restored.
will access the port and damage it.
If the local power distribution system is unstable or prone to
Isolation or Optical Isolation is the preferred comm port problems there are other recommendations to satisfy these
protection method. With optical isolation, there is no con- problems. If power spikes or low or high line voltages are the
tinuity between the communications cable and the comm problem, then a constant voltage (CV) transformer with a
port. There is no dependence on the quality of the ground. noise suppression feature is recommended. Johnson
Be sure to know what the voltage isolation value of the Controls, Inc. can provide these types of transformers for this
optical isolator is before selecting it. These may range purpose. Contact Johnson Controls for proper sizing (VA
from 500 to 4000 Volts. Rating) based on the requirement of the job. If a phase loss
occurs, then you will typically get a high motor amp shut-
Frick Optical Isolation Kits are offered under part number
down. If the problem continues, an analysis of the facility’s
639C0133G01. One kit is required per comm port.
power supply quality may be necessary.
NOTICE
It is very important to read the installation instructions thoroughly before
beginning the project. Make sure you have drawings and instructions for the
equipment being installed. If not, call the manufacturer to receive the proper
instructions and drawings. Every manufacturer of electronic equipment should
have a knowledgeable staff, willing to answer your questions or provide
additional information. Following correct wiring procedures will ensure proper
installation and consequently, proper operation of your electronic equipment.
Page 56 FORMS
OPERATING LOG SHEET

FORMS Page
57
READ THIS FIRST: COMPRESSOR PRESTART CHECKLIST

The following items MUST be checked and completed by the installer prior to the arrival of the Frick Field
Service Supervisor. Details on the checklist can be found in this manual. Certain items on this checklist
will be reverified by the Frick Field Service Supervisor prior to the actual start-up.
Mechanical Checks Electrical Checks

__ Package installed according to Frick publication __ Package installed according to Frick publication
070.210-IB, Screw Compressor Foundations. 090.400-SB, Proper Installation of Electrical
__ Confirm that motor disconnect is open Equipment In An Industrial Environment.
__ Isolate suction pressure transducer __ Confirm that main disconnect to motor starter and micro
__ Pressure test and leak check unit is open
__ Evacuate unit __ Confirm that electrical contractor has seen this sheet,
__ Remove compressor drive coupling guard ALL PERTINENT WIRING information, and drawings
__ Remove coupling center and DO NOT reinstall __ Confirm proper power supply to the starter package
(motor rotation must be checked without center) __ Confirm proper motor protection (breaker sizing)
__ Check for correct position of all hand, stop, and check __ Confirm that all wiring used is stranded copper and is
valves PRIOR to charging unit with OIL or REFRIGERANT 14 AWG or larger (sized properly)
__ Charge unit with correct type and quantity of oil __ Confirm all 120 volt control wiring is run in a separate
__ Lubricate electric drive motor bearings PRIOR to conduit from all high voltage wiring
checking motor rotation __ Confirm all 120 volt control wiring is run in a separate
__ Check oil pump alignment (if applicable) conduit from oil pump and compressor motor wiring
__ Check for correct economizer piping (if applicable) __ Confirm no high voltage wiring enters the micro panel
__ Check separate source of liquid refrigerant supply (if at any point
applicable, liquid injection oil cooling) __ Check current transformer for correct sizing and instal-
__ Check water supply for water-cooled oil cooler (if ap- lation
plicable, water cooled oil cooling) __ Check all point-to-point wiring between the micro and
__ Check thermosyphon receiver refrigerant level (if ap- motor starter
plicable, thermosyphon oil cooling) __ Confirm all interconnections between micro, motor
__ Check for PROPER PIPE SUPPORTS and correct foundation starter, and the system are made and are correct
__ Check to ensure ALL piping INCLUDING RELIEF VALVES __ Ensure all electrical panels are free from installation
is completed debris, METAL PARTICLES, and moisture
After the above items have been checked and verified:

__ Close the main disconnect from the main power supply to the motor starter
__ Close the motor starter disconnect to energize the micro
__ Manually energize oil pump and check oil pump motor rotation
__ Leave micro energized to ensure oil heaters are on and oil temperature is correct for start-up
__ DO NOT energize compressor drive motor ! This should only be done by authorized Factory Field Service Technicians.
Summary: The Frick Field Service Supervisor should arrive to find the above items completed. He should find an uncoupled
compressor drive unit (to verify motor rotation and alignment) and energized oil heaters with the oil at the proper standby
temperatures. Full compliance with the above items will contribute to a quick, efficient and smooth start-up.
The Start-up Supervisor will:

1. Verify position of all valves 6. Verify and finalize alignment (if applicable)
2. Verify all wiring connections 7. Calibrate slide valve and slide stop
3. Verify compressor motor rotation 8. Calibrate temperature and pressure readings
4. Verify oil pump motor rotation 9. Correct any problem in the package
5. Verify the % of FLA on the micro display 10.Instruct operation personnel
NOTE: Customer connections are to be made per the electrical diagram for the motor starter listed under
the installation section and per the wiring diagram listed under the maintenance section of the IOM.
Please complete and sign this form & fax to 717-762-8624 as confirmation of completion.
Frick Sales Order Number:_______________________ Print Name:____________________________________

Compressor Model Number:______________________ Company:______________________________________
Unit Serial Number:_____________________________ Job Site Contact:_______________________________
End User Name:_ _______________________________ Contact Phone Number:_________________________
Address of Facility:______________________________
City, State, Zip: ________________________________ Signed: _ ______________________________________
Page 58 FORMS
Start-up Report Frick Order No:_________________________
Sold To:_ _______________________________________ Contact Name:__________________________

Date:__________________
End User:_______________________________________ Contact Name:__________________________ Phone:__________________
End User Address:_ ______________________________________________________________________ Fax No:__________________
City, State, Zip:__________________________________ Start-up Representative_ _________________
Unit General Information
Unit Model #____________________________________________ Customer Package Identification #_ _________________________
Compressor Serial #_____________________________________ Separator National Board #________________________________ Unit
Serial #____________________________________________ Oil Cooler National Board #_ _______________________________
Evaporator National Board #_______ Serial #________________ Condenser National Board #_________ Serial #________________ Oil Pot
National Board #__________________________________ H.P. Receiver National Board #______ Economizer National
Board #______________________________ Suction Accumulator National Board #_______________________
Refrigerant_______________ Oil Filters_________________ Lube Oil Type_________ Design Operating Conditions
Oil Cooling ______________________________________ ___________ 0 Suct. /_________ 0 Disch.
Micro Information
Micro Type_________________________ Program Software Ver #________ and Date__________ UL Serial # __________________
Digital I/O Board #1 Serial #__________________________________ Software Ver #___________and Date ____________________
Digital I/O Board #2 Serial #__________________________________ Software Ver #___________and Date ____________________
Analog Board #1 Serial #____________________________________ Software Ver #___________and Date ____________________
Analog Board #2 Serial #____________________________________ Software Ver #___________and Date ____________________
Compressor Motor Starter / Drive Information
Manufacturer ___________________________ Part #____________________ Model # ______________________
Starter Type_____________________________ Serial #__________________________
Input Voltage_______________ Voltage Range____________ Phase______________ Hz______________ Current_____________
Output Voltage_________ Phase_________ Hz _______ Max FLA ________Max LRA ______ Min Load FLA_____ Job FLA_ _____
Logic Board Serial #___________________ U33 Prog. Ver._________ Date_ ___________P/N ________________________
U34 Prog. Ver._________ Date_ ___________P/N ________________________
U45 Prog. Ver._________ Date ____________P/N ________________________
Harmonic Filter Serial #___________________ Prog. Ver._________ Date ____________P/N ________________________
Frick Interface Serial #____________________ Prog. Ver._________ Date ____________P/N ________________________
CT Location Checked CT Phase_______ CT Ratio_______ Transition Time__________ DBS Ver.#_ _____________
Oil Pump Information
Pump Mfg.____________ Model #__________ Serial #_________________ Motor Mfg.______________ H.P._________________ Motor
RPM__________ Service Factor_______ Volt________ HZ_______ FLA______ Design _____ Code______ Starter Size______
Cooling Fan Information
Motor HP_______ RPM_________ Service Factor____________ Volt________ Hz_ _________ FLA________ Cooling
Fans________
Special Options
_______________________ ____________________________ _________________________ _________________________
Prestart Checks
Installation, Foundation Compressor PHD Setup Coolant Installed
Position of all valves Motor PHD Setup 4-20 Coolant Loop Pump Setup
Proper oil charge Motor Winding RTD’s Setup Coolant Loop Temp Setup
All wiring connections Motor Bearing RTD’s Setup Cooling Fan Motor I/O Setup
Starter Cleanliness Motor Temperature Thermistor Setup Cooling Fan Rotation Checked
All micro settings 4-20 Motor Drive Signal Calibrated Oil pump motor rotation
4-20 CT Channel 16 Setup Cold alignment Motor rotation
4-20 Output Calibration – Liquid Makeup Valve, Coolant Temp Valve, Economizer Makeup Valve
Configuration
Capacity Channel Direction Package
Mode 1______________ ___________ ____________ Compressor _______________
Mode 2______________ ___________ ____________ Pump _______________
Mode 3______________ ___________ ____________ Dual Pump _______________
Mode 4______________ ___________ ____________ Drive ____________________________
VFD Hi & Low PI Control ___________ ____________ Refrigerant ___________ K-Factor__________
Miscellaneous Filter______________________________
Sequencing ________________ PowerPac_____________
Condenser ________________
Screen Saver ________________
FORMS Page 59
Page 2 Unit Serial #_____________________________ Frick Order No:_____________________________

Capacity Control Setpoints
Setpoint Regulation Safeties Setpoint Regulation Safeties
High Low Load Inhibit_________ High Low Load Inhibit__________
Prop. Band _________ ________ Force Unload________ Prop. Band ________ _________ Force Unload_________
Dead Band _________ ________ Warning___________ Dead Band ________ _________ Warning____________
Cycle Time _____ Sec _____ Sec Warning Delay____ Sec Cycle Time _____Sec _____ Sec Warning Delay_____ Sec
VFD Prop Band _________ ________ Shutdown__________ VFD Prop Band ________ _________ Shutdown___________
VFD Integ. Time _____ Sec _____ Sec Shutdown Delay____ Sec VFD Integ. Time _____Sec _____ Sec Shutdown Delay_____ Sec
Channel _________________________ Channel __________________________
Auto Cycle Low Suction Auto Cycle Low Suction
Start _ ________ Load Inhibit __________ Start _________ Load Inhibit __________
Start Delay _ ____ Min Force Unload __________ Start Delay _____ Min Force Unload __________
Stop _ ________ Warning __________ Stop _________ Warning __________
Stop Delay _ ____ Min Warning Delay ______ Sec Stop Delay _____ Min Warning Delay ______ Sec
Shutdown __________ Shutdown __________
Shutdown Delay ______ Sec Shutdown Delay ______ Sec
Compressor Safeties
High Discharge Temperature High Suction Pressure
Load Inhibit ________ Load Inhibit ________ PSIG
Force Unload ________ Force Unload ________ PSIG
Warning ________ Start Differential Warning ________ PSIG
Warning Delay ________Sec Pressure Below Warning Delay ________ Sec
Shutdown ________ 50 PSI Shutdown ________ PSIG
Shutdown Delay ________Sec Shutdown Delay ________ Sec
High Discharge Pressure Dual Mode ________________ Economizer ________________
Regulation Modes 1 & 3 Modes 2 & 4 On When Above _______%
Load Inhibit _____ PSIG _____ PSIG Off When Below _______%
Force Unload _____ PSIG _____ PSIG Override Discharge Pressure ________
Warning _____ PSIG _____ PSIG Port Value ________
Warning Delay _____ Sec _____ Sec Pressure Input __________________
Shutdown _____ PSIG _____ PSIG Fixed Pressure Setpoint __________________
Shutdown Delay _____ Sec _____ Sec
Maximum Discharge Pressure _ ______________ PSIG
Highest Cap. To Permit Start _ ______________ % Balance Piston
Start Period Before Cap. Increase _ ______________ On _ ____ %
Stopping Period For Cap. Unload _ ______________ Off _ ____ %
Compressor Auto Mode Min. Cap. _ ______________ % Ignore Delay _ ____ Min
Capacity Unload Assist. _ ______________ Rate_ __________% Fail Delay _ ____ Min
Separator Velocity Ref. _ ______________ Oil Log________________ Delay _______ Sec.
Compression Ratio _ ______________
Liquid Slug Warning _ ______________ Main Oil Injection On When Discharge Temperature
Liquid Slug Shutdown _ ______________ Is Above___________ °F for_ _____ Sec
Package Safeties
Low Compressor Oil Temperature Pull Down ______________________
Warning _ __________ Delay ______ Sec Capacity Position _________ %
Shutdown _ __________ Delay_______ Sec Amount of Time _________ Sec
High Compressor Oil Temperature Pump Down _____________________
Warning _ ______ Delay_______ Sec On When Suction Above _____ PSIG Delay______ Min
Shutdown _ ______ Delay_______ Sec DX Circuit
Low Compressor Oil Pressure #1 Action_______________________
Warning _ ________ PSI Delay________ Sec Off When Below _ _______ %
Shutdown _ ________ PSI Delay________ Sec On When Above _ _______ %
High Filter Pressure #2 Action _______________________
Warning _ ________ PSI Delay________ Min Off When Below__________ %
Shutdown _ ________ PSI Delay________ Min On When Above__________ %
Main Oil Injection________________________ Liquid Injection __________________
Shutdown _ ________ PSI Delay________ Sec On When Above _ __________ Delay_______ Sec
Oil Heater Off Above_ ________ Dual Port Transition ________
High Level Shutdown Delay_ ________ Sec
Low Oil Level Delay_ ________ Sec Hot Gas Bypass _________ %
Oil Pump Lube Time Before Starting_ ________ Sec Power Assist __________ Sec
Dual Pump Transition Time_ ________ Sec
Page 60 FORMS
Page 3 Unit Serial #_____________________________ Frick Order No:_____________________________

Compressor Motor Setpoints and Information
Motor Name Plate VFD Manufacturer_________________
Motor Amps ____________ Maximum Drive Output____ % Frame Size_______________
Volts ____________ Minimum Drive Output ____ % H.P._____________________
Service Factor ____________ Remote Control RPM ____________________
Horsepower ____________ Rate Of Increase_________ % Delay_____ Sec Serial #__________________
CT Factor ____________ Rate Of Decrease________ % Delay_____ Sec Service Factor____________
Recycle Delay___________ Min Capacity Control Voltage__________________
High Motor Amps When Slide Valve Reaches_ ________ % Hz______________________
Load Inhibit______________ Drive Speed Reaches _________ % Design __________________
Force Unload__________ Variable Speed Min. Slide Valve Position ________ % Code____________________
Warning________ Delay____ Sec Skip Frequency Bands Bearing Type_________________
Shutdown________ Delay____ Sec Bottom Top Motor Coupling _ _____________
_ _______ ______
Low Motor Amps _ _______ ______
Shut Down_________ Delay______ Sec _ _______ ______
Confirmed Running Motor Amps________ _ _______ ______
Starting Motor Amps Ignore Period _________ Sec _ _______ ______
Vyper Coolant Setpoints
Vyper Standby Time_______ Vyper Coolant Low Temp. Alarm______ Delay______ Shutdown_______ Delay_________
High Temp. Alarm______ Delay______ Shutdown_______ Delay_________
PHD Monitoring Setpoints Condenser Control
Compressor Bearing ____________ Condenser Control Setpoint ______________
Suction End Delay Discharge End Delay Digital Controls Step Order
High Warning______ gF_____ Sec High Warning_ _____ gF_____ Sec Module A ________
High Shutdown_____ gF_____ Sec High Shutdown_____ gF_____ Sec Module B ________
Module C ________
Motor Bearing ______________ Module D ________
Shaft Side Delay Opposite Shaft Side Delay Step Up Dead Band _________ PSI
High Warning_______ F_____ Sec High Warning_ ______ F_____ Sec Step Up Delay ________ Sec
High Shutdown______ F_____ Sec High Shutdown______ F_____ Sec Step Down Dead Band _________ PSI
Step Down Delay ________ Sec
Motor Stator__________________ High Pressure Override _________ PSI
High Pressure Override Delay_ _____ Sec
Stator 1 Delay Stator 2 Delay
High Warning______F_ ______ Sec High Warning_ _____F_ ______ Sec Analog Controls Analog Output A ____________
High Shutdown_____F_ ______ Sec High Shutdown_____F_ ______ Sec Analog Output B ____________
Proportional Band _________
Stator 3 Delay PSI Integration Time ________
High Warning______F_ ______ Sec Sec High Limit _________ PSI
High Shutdown_____F_ ______ Sec Low Limit ________ Sec
Miscellaneous
Remote Capacity Deadband________ % Max Slide Valve Timer________ 1/10 Sec
High Compressor Oil Pressure _________________ Max Discharge Pressure ____________ PSI
Shutdown_____PSI Delay _____ Sec Max Discharge and Oil Temp_ ________°F

FORMS 2015) Page 61
Page 4 Unit Serial #________________ Frick Order No: __________________________________________

P&ID Setpoints
Name _________________ __________ _________________ __________
Control ____________ ____________ ____________ ____________
Action ____________ ____________ ____________ ____________
Control Point __________________ __________________
Device Source ______________ __________ ______________ __________
Device Channel ______ ______
Setpoint ____________ ____________ ____________ ____________
Dead Band ____________ ____________ ____________ ____________
Prop. Band ____________ ____________ ____________ ____________
Integral Gain ____________ ____________ ____________ ____________
Communications
Compressor ID_______
Comm 1 Comm 2 Comm 3
Baud Rate_________ Baud Rate ___________ Baud Rate___________
Data Bits __________ Data Bits____________ Data Bits____________
Stop Bits __________ Stop Bits ____________ Stop Bits____________
Parity _____________ Parity _______________ Parity_______________
RS 485 Connection________ RS 485 Connection________ RS 485 Connection________
Protocol __________ Protocol __________ Protocol __________ Use Map File_________
Ethernet
IP Data Naming Data Protocols
Address Type __________ Host Name___________ ModBus TCP_ ________
IP Address __________ Work Group__________ Ethernet I/P__________
Gateway Address __________ Comments___________ Profinet_____________
Subnet Mask __________
Web Server Port __________
Page 62 FORMS
VIBRATION DATA SHEET
Date: ___________________________________________ Sales Order Number:_________________________________

End User: ________________________________________ Installing Contractor:_________________________________
Address: ___________________________________________ Service Technician:__________________________________
Equipment ID (As in Microlog): _____________________

Compressor Model Number:___________________________
Compressor Serial Number:___________________________
Compressor Serial Number:___________________________
Unit Serial Number:__________________________________
National Board Number:_ _____________________________
Running Hours:______________________________________
Manufacturer and Size of Coupling:____________________
Motor Manufacturer: RAM____________________________
Motor Serial Number:________________________________
RPM:_________ Frame Size:____________ H.P.___________
Refrigerant:
Ambient Room Temperature: ____________°F
Operating Conditions:
SUCTION DISCHARGE OIL SEPARATOR Slide Valve Position %

Press # Press # Press # Temp °F V.I. Ratio
Temp °F Temp °F Temp °F F.L.A. %
Compressor Inboard
Compressor Outboard (Coupling End Center) Motor Inboard (Coupled End)
(Noncoupled End) Vertical Direction Horizontal _______ . ______ IPS Overall
Axial Direction ____.____ IPS Overall Vertical _______ . ______ IPS Overall
____.____ IPS Overall Axial _______ . ______ IPS Overall
Compressor
Outboard
Vertical Direction
____.____ IPS (Male)
____.____ IPS (Female)
Compressor Inboard
(Jackshaft) Motor Outboard (Noncoupled End)
Horizontal Direction Horizontal _______ . ______ IPS Overall
____.____ IPS Overall Vertical _______ . ______ IPS Overall
Axial _______ . ______ IPS Overall
RXF ROTARY SCREW COMPRESSOR UNITS 070.410-IOM (AUG 14)
NOTES Page 63
070.410-IOM (AUG 14) RXF ROTARY SCREW COMPRESSOR UNITS
Page 64 NOTES
INDEX Page
65
Index
Symbols Idler Pin, 27 Flashing Liquid, 10
3-phase ground, 53 Locknut, 27 Flash Vessel, 10
O-Ring Gasket, 29 Isolation Valve, 10
3-phase supply, 53
Pump, 28 Microprocessor, 10
B Pump Head, 27, 29 Outlet Pressure Regulator, 10
Back Flushing, 9 Bleed Refrigeration Oil, 28 Strainer, 10
Valve, 25 Booster Rotor, 28, 29 Subcooling Liquid, 10
Applications, 15 Rotor Hub, 28 Elastomeric Gear, 6
Brownouts, 13 Rotor Shaft, 29 EMI, 53
Rotor Teeth, 29 External Controller, 11
C Seal, 28 External Oil Cooling, 21
Cable Trays, 53 Seal Housing Bore, 28
Seal Seat, 28 F
Carbon Graphite Bushings, 27, 28,
29 Chemical Cleaning Process, 9 Seal Spring, 29 Filter Elements, 8
CH Coupling Data Table, Snap Ring, 27 Flexible Drive Coupling, 6
6 Clamping Bolts, 7 Spring, 28, 29 Forklift, 6
Closed-Loop Fluids, 9 Tapered Installation Sleeve, 29 Foundation, 3, 5, 14, 51, 56
Closed-Loop System, 9 Thrust-Bearing Assembly, 28 Anchor Bolts, 5
Coalescer, 15 Troubleshooting, 30 Grout, 5
Coalescer Filter Element, 8 Air Leak, 30 Housekeeping Pads, 5
Codes, 53 Alignment, 30 I-Beams, 5
Cold-Start Valve, 14 Cavitation, 30 Pipe Supports, 5
Comm Port, 55 Discharge Port, 30 Reinforced Concrete, 5
Comm Port Protection, 55 Discharge Pressure, 30 Vibration Expert, 5
Communications, 55 End Clearance, 30
Filter, 30 H
Compressor
Discharge, 15 Foot Valve, 30 Hand Expansion Valve, 21
Motor, 11 Gate Valve, 30 Handling And Moving, 5
Compressor Motor Starter, 12 Head, 30 Crane, 5
Compressor Port Locations Misalignment, 30 Forklift, 5
RXF 12 - 19, 38 Motor, 30 Lifting Ring, 6
RXF 24 - 50, 39 Motor Speed, 30 Rigging, 5
RXF 58 - 101, 41 Pressure Gauge, 30 Hard Water Conditions, 9
Compressor Prestart Checklist, 57 Pump, 30 Heat Exchanger, 9
Compressor Shaft, 6, 14 Relief Valve, 30 Heat-Sink Paste, 9
Compressor Unloading, 15 Sheave Size, 30 High-Stage Operation, 14
Compressor Volume Ratio, 15, 16 Strainer, 30 Hydraulic System, 15
Conduit, 53 Suction Line, 30
Suction Pipe, 30 I
Cone/Button, 8
Constant Speed Starters, 53 Suction Port, 30 Initial Start-Up, 21
Constant Voltage (Cv) Transformer, Vacuum Gauge, 30 Inlet Service Valve, 24
55 Control Power Regulator, 13 Valve, 30
Vaporizing, 30 J
Cooling Tower Water, 9 Cooling
Water, 9 Vibrating, 30 Jack, 6
CoolWare™, 21 Differential Pressure, 14
Direct Expansion Economizer System, L
coupling, 11
Current Transformer, 12 11 Liquid Carryover, 7
Cutout Parameters, 15 Direct Motor Drive, 6 Liquid Injection, 9, 17
Discharge Temperature, 21 Analog Input Signal, 19
D Drive Hubs, 6 Danfossliquid Injection Valve, 18
Daisy-Chaining, 55 Dry Nitrogen, 7 Digital Input Signal, 19
Demand Pump DX Economizer, 10 Dual Dip Tube Method, 10
Bearing Retainer Washer, 28 Enter Push Button, 18
E High-Stage Units, 10
Bearings, 28
Bearing Spacer, 27 Economizer ICAD (Industrial Control Actuator
Carbon Graphite Bushings, 29 Back-Pressure Regulator Valve, 10 with Display), 18
Casing, 27, 29 Balancing Load, 10 ICM Valve, 19
End Clearance, 29 Check Valve, 10 Low Condensing Pressures, 10
Head, 27 DX Economizer, 10 Mod, 19
Economizer Port, 10 Motorized Industrial Control Valve,
Idler, 27
18
070.410-IOM (NOV 2015) Page 66
Opening Degree, 19 RXF ROTARY SCREW COMPRESSOR
Parameters, 18 UNITS INDEX
Parameter List, 20
Analog Output Signal, 20 P & I Diagram, 41 Oil Distillers, 7
Automatic Calibration, 20 Pressure Sensors, 35 Oil Filter, 8
Digital Input Function, 20 Pressure Transducers, 33 Oil Heaters, 7
Fail-Safe, 20 Conversion Data, 34 Operating Volume Ratio, 17
ICM Configuration, 20 Replacement, 33 Optical Isolation, 55
Main Switch, 20 Testing, 33 O-Ring Compression, 40
Mode, 20 Refrigerant Vapor, 24, 25
Modulating Mode, 20 Refrigeration Oil, 32 P
Old Alarms, 20 Safety Equipment, 23 pH, 9
Password, 20 Sensor Well, 35 Power Feed, 53 Power
Solenoid Valve, 19 Service Valves, 24 Fluctuations, 13
Liquid Injection Oil Cooling, 21 Spin-On Oil Filter Element, 24 Pressure Differential, 15
Liquid Injection Thermal Expansion Starting Torque, 26 Proper Installation of Electronic
Valve, 21 Strainer Elements, 26 Equip-ment, 51
Liquid Loading, 21 Strainer Service Valves, 26 PVC-Coated Metallic,
Liquid Refrigerant, 17 Suction Check Valve Bypass, 24, 26 53 PVC conduit, 53
Liquid Starvation, 21 Suction Service Valve, 26
Low Voltage, 11 Suction Strainer, 23 Q
Lubrication System, 14 Suction Valve Bypass, 26 Quantum™HD, 11, 15, 55
M Superheat, 23
Temperature Sensor, 35 R
Magnetic Field, 53 Temperature Transmitter, 34, 35 Reboot, 55
Main Oil Injection Port, 15 Troubleshooting. See Index, TROU- Recovery Procedure, 27
Maintenance, 23 BLESHOOTING RXF Rotary Screw Compressor, 14
Abnormal Vibration, 31 Ventilation, 23 Moveable Slide Valve, 14
Bare Compressor Mounting, 35 Vibration Analysis, 32 Shaft Seal, 14
Bearing Failure, 23 Vibration Data Sheet, 62
Coalescer Filter Element, 26 Vibration Level, 23 S
DIN Connector Plug, 35 Volume Ratio Control, 35 Scaling, 9
Discharge Service Valve, 26 Water Vapor, 23 Self-Lubricating, 14
Disconnect Power, 23 Wiring Harness, 50 Separator, 6
Disconnect Switches, 24 Maintenance Schedule, 31 Severe Water Conditions, 9
Drain Valve, 26 Maximum Oil Flow, 21 Shell And Coil Economizer System, 10
Dry Nitrogen, 23 Mechanical, 57 Shipping Gauges, 7
Filter Elements, 32 Metal Conduit, 53 Shutdown, 23
Isolation Valves, 23 Microprocessor, 10, 17 Liquid Injection, 23
Leaks, 31 Moments, 9 Package Valves, 23
Linear Transmitter, 35 Motor, 11 Solenoid Valves, 23
Liquid Injection Strainer, 25 Bearings, 21 Strainers, 23
Liquid Injection Valves, 23 Contactor, 11 Sight Glass, 7, 15, 27
Liquid Refrigerant, 23 Cycling, 11 Signal Wiring, 53
Low Pressure Transducer, 24 Rotation, 6, 14 Single-Port Liquid Injection, 17
Moisture, 32 Motor Starter Contactor, 11 Skip Frequencies, 22
Motor Bearings, 32 Mounting Bolts, 6 Slide Stop, 22
Lubrication, 32 Movable Slide Valve, 15 Slide Valve, 22
Noise, 31 Multiple Compressor Economizer Slide Valve Piston, 15
Nuisance Oil Level Cutouts, 26, 32
System, 11 Sola® Constant Voltage (Cv) Trans-
Oil-Charging Valve, 26 former, 11
Oil Cooler, 26 N Solenoid Valve, 17
Oil Filter Element, 26 Neoprene Drive Spacer, 6 Star Networks, 55
Oil Filters, 24 Noise Suppression, 55 Start-Up
Oil Foaming, 26 Suction Strainer, 21
Oil Level Control, 35 O Start-Up
Oil Level Transmitter, 35 Dual Oil Filters, 24 Coolware™, 21
Oil Pressure Loss, 26, 32 Main Oil Filter, 24 Discharge Temperature, 21
Oil Pump Strainer, 25 Oil Charge Reservoir, 15 Hand Expansion Valve, 21
Oil Quality, 32 Oil Cooling Initial Start-Up, 21
Operating Log, 32 Liquid Injection, See "Liquid Injec- Prestart Checklist, 21
tion" on page 65 Theoretical Discharge Temperature,
Thermosyphon, See "Thermosy- 21
phon Oil Cooling" on page 67 Water Control Valve, 21
INDEX 2015) Page 67
Starter Package Wiring Diagram, 12

Static Forces, 9
Strainer, 9, 27
Stub Connections, 9
Suction Check Valve, 8
Suction Check Valve Bypass, 15, 27
Suction Housing, 6, 14
Suction Isolation Valve, 8
Suction Strainer, 21
Surge Suppression, 55
T
Temperature Sensor, 17
Thermosyphon Oil Cooling, 8, 17, 21
Condensing Pressure, 21
Drain Valve, 8
Liquid Refrigerant, 8
Refrigerant-Side Safety Valve, 8
Thermostatically Controlled Mixing
Valve, 8
Vapor Mixture, 21
Welding, 9
Threaded Metallic, 53
Threaded Pvc-Coated Metallic, 53
TROUBLESHOOTING, 36–37
Excessive Noise And Vibration, 36
High Oil Temperature, 36
Low Oil Temperature, 36
Oil Temperature Fluctuates, 36
Rapid Oil Loss, 36
Slide Valve, 37
U
Uninterrupted Power Supply, 55
Unit Data Plate, 3
Unshielded, 53
UN/UNF Straight Threads, 40
UPS, 11, 55
UPS Power, 55
UPS Power System, 11
V
Variable Frequency Drives, 53
Vessel, 21
VFD, 22
VFD Applications, 52
VFD Output, 52
Vibration Analysis, 21
Vibration Data Sheet, 62
Voltage Isolation, 55
W
Water Control Valve, 21
Water-Cooled Oil Cooling, 17
Water Treatment, 9
Welding, 9
November 2015 Form Revisions
p.11 – Added Economizer Vi Control text
p.21 – Revised RXF 58-101 text. Last paragraph - valve to be two turns open.
Form 070.410-IOM 2015-11 JOHNSON CONTROLS

Supersedes: 070.410-IOM 2014-11 100 CV Avenue
Subject to change without notice Waynesboro, PA 17268-1206 USA
Published in USA • PDF Phone: 717-762-2121 • FAX: 717-762-8624
© 2015 Johnson Controls Inc. - ALL RIGHTS RESERVED www.jci.com/frick

Unidades de Compresor de Tornillo Rotativo: MODELOS 12 - 101

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Formulario 070.

410-IOM (NOV 2015)

ESTE MANUAL CONTIENE INSTRUCCIONES DE MONTAJE, MONTAJE, ARRANQUE Y

Please check www.jci.com/frick for the latest version of this publication.

General Information JOB INSPECTION

UNIT DATA PLATE

SAFETY PRECAUTION DEFINITIONS

COMPRESSOR DATA PLATE

GEOMETRICAL SWEPT VOLUME TABLE

disconnected from the compressor. See table for

CAUTION COMPRESSOR/MOTOR COUPLINGS

CH COUPLING DATA TABLE

NOTICE 2. A shell and tube or plate-type oil cooler with a minimum

WATER-COOLED OIL COOLING Fx Fy Fz Mx My Mz

Johnson Controls-Frick recommends a closed-loop

DUAL DIP TUBE METHOD

ECONOMIZER - HIGH STAGE (OPTIONAL)

• Manual – The compressor will have to be restarted

MOTOR STARTER PACKAGE

4. One normally open compressor motor starter auxiliary

5. The compressor motor Current Transformer (CT) can be

Do not install a compressor HAND/OFF/AUTO switch in

MINIMUM BURDEN RATINGS

Operation COMPRESSOR LUBRICATION SYSTEM

Para aplicaciones de refuerzo, la válvula está equipada con un resorte más

El paquete RXF también está equipado con un bypass de válvula de

Figure 16 -"Válvula de retención de descarga de

wrong Vi, or to load or unload improperly. Operation at the

GASKET INSTALLATION SIDE VIEW

Vi SOLENOID 3 / YY3 SOLENOID 4 / YY4 Figure 20 - RXF 24–50 Vi Control

QUANTUM™HD EZ-COOL™ LIQUID INJECTION ADJUSTMENT PROCEDURE

[Integration Time] - This setpoint controls the influence that

I/O Board - One of the following will be shown:

I/O Channel - The output channel that will be used will be

Port Multiplier - The standard value is 1 (one).

[On When Above] - When the Discharge Temperature is

[Off When Below] - When the Discharge Temperature is

Valve Position - The value shown here represents the po-

Reset to factory setting:

Typically motorized valves are factory set. If adjustments

The first method is used for compressors with External Oil

NORMAL START-UP PROCEDURE VFD SKIP FREQUENCIES

RESTARTING COMPRESSOR UNIT AFTER CONTROL

1. Check ADJUSTABLE setpoints.

Keep liquid injection valves properly adjusted and in good

OIL FILTER, SPIN-ON (RXF 12 – 50) WARNING

2. Close outlet then inlet service valves of filter being serviced.

COALESCER OIL RETURN STRAINER 8. Reassemble the strainer.

7. Replace the cleaned element and gasket, then reattach

CAUTION with local ordinances, before opening to atmosphere. The

DEMAND PUMP DISASSEMBLY

CAUTION 1. Mark head and casing before disassembly to ensure proper

NOTICE 6. Loosen the two setscrews in the face of bearing housing

9. Pressurize and leak test. Evacuate unit to 29.88" Hg

Wash bearings in clean solvent. Blow out bearings with

DEMAND PUMP ASSEMBLY

Figure 30 - Thrust-Bearing assembly (AS, AK, AL) NOTICE

Change Oil As Directed By Oil Analysis

Motor Flange to Compressor Discharge Flange

Frick Sales Order Number:_ Print Name:______________

Sold To:_ _____________ Contact Name:

Page 2 Unit Serial #_ Frick Order No:_

Page 3 Unit Serial #_ Frick Order No:_

Page 4 Unit Serial # Frick Order No: __________________________

Date: ___________ Sales Order Number:_