Instruction Manual EN

CP COMPRESSOR
Model CPE 75 - 100 - 125 - 150
CPVS 100 - 125 - 150
62 305 793 65

CPE 150

CPVS 125
 The CP Compressors should never be operated beyond its capabilities
or in any way which does not comply with the instructions contained
in this operating and maintenance guide.

Chicago Pneumatic Compressors will decline any responsibility

if these instructions are not respected.

This equipment has been factory tested and satisfies normal

operating conditions: they must not be exceeded
as this would place the compressor under abnormal stress and effort.

INSTALLATION INSTRUCTIONS
For the guarantee to be valid, the unit must be assembled in covered
premises with temperatures not exceeding :

Mini: + 36 °F (frost free)

Maxi: + 104 °F
You must also have:
3,33 ft space around the compressor
-
low ventilation (fresh air) proportionate to the ventilation flow necessary for the compressor and protected
from any infiltration of humidity (splashes of water during bad weather) and all pollution
-
top insulation or extraction to ensure reversal of the flow of warm air and evacuation of the heat to
outside the equipment room
-
a link from the condensation water evacuation pipe to the drain discharger.
-
In case of dusty ambient environment, a pre-filtration is made by micro-filter on the air inlet of the room used for cooling and
perhaps a special filter on the compressor air inlet.

TECHNICAL DATA
STANDARD MACHINES

CPE 75 100 125 150

Nominal pressure at full flow PSI 100 125 150 175 100 125 150 175 100 125 150 175 100 125 150 175
Actual flow* cfm 374 334 - - 517 455 410 379 566 528 504 450 687 615 561 526
(as per ISO 1217 ed 1996)
Motor power hp 75 100 125 150
Ø Pressure outlet (M) NPT 2" 2" 2" 2"
Capacity gal 6.6 6.6 9.25 9.25
Carryover ppm 2 2 2 3
Noise level at 3,3 ft dB(A) 65 66 71 75
(according to ISO 2157 + 3db(A))

**Suction pressure : 14.5 PSI absolute - Relative humidity : 0 % - Ambient temperature : 68 °F

- Effective delivery pressure : 102 PSI, 109 PSI, 138 PSI or 181 PSI (effective)

Dimensions (in) LxWxH 87.86 x 41.76 x 63.04 87.86 x 41.76 x 63.04 87.86 x 41.76 x 63.04 87.86 x 41.76 x 63.04

Approximate weight lbs 3153 3307 3583 3990

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 CPE 75 100 125 150

Motor power hp 80 100 125 150

Main Voltage 230 Volt / 3 / 60 Hz

Nominal current (A) 231 321 - -

Power supply cable AWG 300 AWG 500 - -
Fuse protection (RK5) 250 350 - -

Main Voltage 460 Volt / 3 / 60 Hz

Nominal current (A) 114 163 184 217

Power supply cable AWG 1 AWG 000 AWG 0000 AWG 250
Fuse protection (RK5) 125 175 200 250

Main Voltage 575 Volt / 3 / 60 Hz

Nominal current (A) 82 119 133 158

Power supply cable AWG 2 AWG 0 AWG 00 AWG 000
Fuse protection (RK5) 90 125 150 175

TECHNICAL DATA
VARIABLE SPEED MACHINES
CPVS 100 125 150

CPVS VERSION (as per ISO 1217 ed 1996)

Nominal pressure at full flow PSI 58 102 138 58 102 138 58 102 138
Actual flow* cfm 524 518 451 644 576 508 688 673 600
(as per ISO 1217 ed 1996)
Motor power hp 100 125 150
Ø Pressure outlet (M) NPT 2" 2" 2"
Capacity gal 6.6 7.66 9.25
Carryover ppm 2 2 3
Noise level at 3,3 ft dB(A) 66 71 75
(according to ISO 2157 + 3db(A))

* *Suction pressure : 14.5 PSI absolute - Relative humidity : 0 % - Ambient temperature : 68 °F

- Effective delivery pressure : 102 PSI, 138 PSI or 181 PSI (effective)

Dimensions (in) LxWxH 87.86 x 41.76 x 63.04 87.86 x 41.76 x 63.04 87.86 x 41.76 x 63.04

Approximate weight lbs 3307 3583 3990

Note : For specific information on variable speed machines see Chapter 6.

Connection of the electric plate to an external control box

• Install an RC filter on the KM1 coil.
• Install an RC filter on the KM2 coil.
• All connections between external parts and the compressor must be carried out using a shielded cable, which must be grounded at one of its
ends.

WARNING: the operation connection cables between the different elements must never follow the same path as the existing power
cords. A separate installation from the power cords must be carried out.
• Install an RC filter on all the relay coils of the external operation units.

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 CONTENTS
Space requirement and installation diagram CPE 75, CPE 100, CPE 125, CPE 150,
CPVS 100, CPVS 125, CPVS 150 ...................................................................................................................................................... 5

Section 1 - Description ................................................................................................................................................................................. 6

A - General Information ...................................................................................................................................................................... 6
B - Respect of the environment and prevention of pollution ............................................................................................................. 6
C - Standard equipment ...................................................................................................................................................................... 6
D - Definition of the pictograms ........................................................................................................................................................ 7
E - Electronic board ............................................................................................................................................................................ 7

Section 2 - Installation ................................................................................................................................................................................. 8

A - Handling ........................................................................................................................................................................................ 8
B - Room ............................................................................................................................................................................................ 8
C - Assembly ...................................................................................................................................................................................... 8
D - Air discharge pipes ....................................................................................................................................................................... 8
E - Condensate drain pipes ................................................................................................................................................................. 9
F - Electric cabling .............................................................................................................................................................................. 9

Section 3 - Commissioning ....................................................................................................................................................................... 10

A - Preparation for start-up .............................................................................................................................................................. 10
B - First start-up .............................................................................................................................................................................. 10
C - Discharge pressure adjustment ................................................................................................................................................... 10
D - Parallel compressor assembly .................................................................................................................................................... 10
E - Safety .......................................................................................................................................................................................... 10

Section 4 - Operation ................................................................................................................................................................................. 11

A - Air and oil circuits ....................................................................................................................................................................... 11
B - Regulation principles .................................................................................................................................................................. 12

Section 5 - Options ..................................................................................................................................................................................... 13

A - Level detection bleed valve (Fig. 9) ............................................................................................................................................ 13
B - Advanced filtration to the compression air inlet (Fig. 10a and 10b) ........................................................................................... 13
C - Pre-filtration panels .................................................................................................................................................................... 14
D - Automatic restarting ................................................................................................................................................................... 15
E - Remote starting and stopping ..................................................................................................................................................... 15
F - Rotation direction indicator - Phase controller ........................................................................................................................... 15
G - Centrifugal separator .................................................................................................................................................................. 15

Section 6 - Specific information for CPVS 100 - 125 - 150 ................................................................................................................... 16

A - Description (cf Section 1) ........................................................................................................................................................... 16
B - Safety .......................................................................................................................................................................................... 16
C - Installation .................................................................................................................................................................................. 16
D - Commissioning ........................................................................................................................................................................... 17
E - Operating incidents ..................................................................................................................................................................... 19

Section 7 - Maintenance ............................................................................................................................................................................ 20

A - Oil level and change .................................................................................................................................................................... 20
B - Air filter ...................................................................................................................................................................................... 21
C - Turbine ....................................................................................................................................................................................... 21
D - Oil and air cooler ........................................................................................................................................................................ 21
E - Oil separator ............................................................................................................................................................................... 22
F - Draining condensation water ...................................................................................................................................................... 22
G - Temperature safety tests ............................................................................................................................................................ 22
H - Refastening electric connections ................................................................................................................................................. 22
I -Decommissioning the compressor at the end of its useful life ...................................................................................................... 22

Section 8 - Trouble shooting ..................................................................................................................................................................... 23

A - Main incidents ............................................................................................................................................................................ 23

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Space requirement and installation diagram CPE 75, CPE 100, CPE 125, CPE 150,
CPVS 100, CPVS 125, CPVS 150
(see page 2 - installation instructions)
Fig. 1

Air outlet female NPT 2" 87.86

31.5 Air inlet
63.04

49.4

Air inlet
5.9
39.4

18.3 7.3 28.7 7.3

Ø5.5 31.4
78.7

A
31.3 31.3
1.1 B C
0.82
16.49

1
32.79

41.76
1.02

6xØ0.3
25.
6 32

14.2 14.2
4.3 4.3
3.9

Model A B C
19.9

CPE 75 23 12.6 5.3

0.28

CPE/CPVS 100 33 17.4 7.6

12

CPE/CPVS 125 35.4 18.8 8.3

CPE/CPVS 150 41.5 21.9 9.8
12

Dimensions (in)
Ø21.3
0.28

20.9
Air inlet without deflector

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Section 1 - Description
A - General Information - Safety devices:

The Chicago Pneumatic Compressors air compressor CP Model, 1. A safety valve mounted on the oil reservoir.
constitute a central compressed air which is fully equipped and 2. An thermal protection device for the motor, situated in the
tested, driven by an electric motor and enclosed by a sound-proof starting box, to protect the motor from excessive overload.
cover, necessary to keep the entire apparatus cool. 3. An air temperature sensor that stops the compressor when
The compression element is a single-stage, oil-refrigerated, ro- the temperature rises abnormally or during an oil cooling
tary screw compressor. The oil is stored in a vertical tank, which defect.
is fitted with an oil separator.
- Control devices:
The compression element and the motor are fixed to the frame
using silent blocks. 1. A minimum pressure valve located at the oil tank outlet,
just beyond the oil separator, which guarantees minimum
pressure in the lubrication circuit.
B - Respect of the environment and
2. An automatic vacuum that allows the use of air to stop,
prevention of pollution thus ensuring a vaccum start relieving the engine.
3. An oil level gauge on the front panel ( see fig. 19).
1 - Maintenance of the compressor
4. An electronic controller including:
Make sure that the used components of the compressor (waste – a control keyboard,
oil, oil and air filters, oil separators, etc.) are disposed of according – the main safety and control indications.
to national and local regulations. 5. The pressure sensor ensures control over the compressed
air flow.
2 - Condensate bleed pipe
The CP compressed air unit has been designed, produced and
Make sure that the condensates (water, oil) are drained and treated
tested in accordance with the following recommendations, codes
according to national and local regulations.
and standards :
- machine safety: European Directive 98/37/CE, 91/368/CEE and
3 - End of life of the compressor
93/68/CEE.
Make sure that the compressor as a whole is disposed of according - pressure vessels: European Directive for simple pressure vessels
to national and local regulations. ( Refer Chapter 7-I ) n° 87/404/CEE.
- electrical equipment:
C - Standard equipment • electrical equipment: European Directive Low tension
In its standard version, the covered unit includes: 73/23/CEE.
• electromagnetic compatibility European Directive: 89/336/CEE,
- Operating components: 92/31/CEE.
1. A twinned screw-type compressor. - performance levels: ISO 1217 : 1996.
2. An electric motor: 3600 rpm, short-circuit rotor, 230/460 - noise level : ISO 2157 + 3db(A).
V or 575 V voltage according to the type. - European Directive 97/23/EC
3. Star delta starting. " Pressure Equipment Directive ".
4. A direct drive or gearbox drive .
5. Air and oil tank in compliance with applicable legislation
ASME (USA) or CRN (Canada).
6. "All or nothing" flow regulation for the aspiration vent.
7. A greasing system using the circuit's differential pressure,
thus avoiding the need for an oil pump.
8. An oil separator based oil separation system.
9. A heat discharge system : oil and compressed air cooler
with forced ventilation.
10. A dry air filter.
11. An oil filter.
12. A command and control electronic board.

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D - Definition of the pictograms
Typical examples of pictograms valid for CP Compressors:
1. Water outlet
2. Manual condensation water draining
3. Water inlet
4. Automatic condensation water draining
5. Unplug and decompress the compressor
before maintenance
6. Hot parts

DANGER
This symbol identifies immediate hazards which will
result in severe personal injury, death or substantial
property damage.

CAUTION
Identifies hazards or unsafe practies which could
result in minor personal injury or property damage.

DANGER
This symbol identifies life threatening electrical
voltage levels which will result in severe personal
injury or death. All electrical work must be
performed by a qualified electrician.

CAUTION
This symbol identifies hot surfaces which coold
result in personal injury or property damage.

E - Electronic board
See the specific instructions for a description of the electronic plate,
together with operating instructions:
Notice N° 62 305 516 99 for version Standard
Notice N° 62 305 517 99 for version CPVS

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Section 2 - Installation
Prevailing wind
A - Handling
The CP Compressors must always be handled with care. It may
L
be lifted either with a forklift truck or by means of a travelling
crane. In the latter case, precautions must be taken in order not to V Flexible fitting
damage the unit's canopy.

B - Room
The CP Compressors is designed to operate in a frost-free Compressor
environment, supplied with air at a temperature of no more than
104 °F. The premises must be well-aired and as close as possible
to the place where the compressed air is used. A space must be
left around the unit, for cleaning and maintenance purposes. It is
very important for the compressor to have an abundant supply of Fig. 2b - Sleeve with an elbow
fresh air. (see page 2).
V maxi = 18,04 ft/s
COMMENT (Ratio of volume flow rate of the ventilation to the sleeve
When the atmosphere is contaminated by organic or mineral dust or cross section)
by corrosive chemical emanations the following precautions must be L maxi = 32,8 ft (without mechanical extractor)
taken:
1. Provide another air inlet as close as possible to the Cross section of room air inlet > 2 x Duct outlet cross section
compressor suction.(recommendation which is valid if the 2 elbows accepted with large radius of curve and fluid gui-
only room available is excessively damp). dance vanes
2 - Use an additional air supply filter. Consult us. Ratio (Length/Width of sleeve) maxi = 1.6

Make sure that no outside air, especially if humid, can be fed

Installation with heat dispersion sleeve back into the compressor and damage electric and electronic
components or rust metal parts.
If the operation of the compressor increases the ambient
temperature above 104 °F, it is necessary to discharge the hot air The maximum admissible pressure loss of the sleeve should not
leaving the cooler to the exterior by means of a sleeve. exceed 30 Pa (3 mmCE). In case of higher value, provide an
additional ventilation (mechanical extractor) with a flow equivalent
to that of the compressor.

Prevailing wind
C - Assembly
Put the unit on a stable surface. The CP compressor does not
need foundations. Any flat surface that can support their weight
V will be sufficient (industrial floor).
L
Flexible fitting
D - Air discharge pipes
The diameter of the air discharge pipe must be at least
2"NPT.Current legislation requires that a valve which is lockable
in the closed position be installed at the air box outlet, connected
Compressor to the compressor by a union and flexible line to allow it to be
cut off during repair work.
If CPVS has to operate in parallel with other CPE, or the analog-
model compressors, the discharge pipes can be connected
Fig. 2a - Sleeve with roof outlet together.
d
If CPVS has to operate in parallel with one or several alterna-
tive compressors, an air tank which is common to the alterna-
Ventilation Duct minimum cross section tive compressors is essential. The pulses emitted by the alterna-
L

flow rate ( d ≤ L ≤ 1,6d ) tive compressors would seriously damage the non-return valve,
cfm sqm the CPVS oil separator component and disturb the control
CPE 75 7650 7.07 system. When the rotary compressor operates in parallel with
CPE/CPVS 100 7650 7.07 an alternative compressor, the latter have to be adjusted so that
the rotary compressor carries the base load. The result of this is
CPE/CPVS 125 8836 8.16 more economic operation.
CPE/CPVS 150 8836 8.16

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E - Condensate drain pipes
A separator with automatic solenoid valve drain is provided
inside the set ( see Section 5-K) to remove the condensate at
the final cooler outlet and stop the compressor pipe condensate
return lines. Connect the discharge pipe to a condensate
manifold.(see B Section 1)

F - Electric cabling
Each CP compressor is wired for a pre-determined voltage,
i.e. 230 V, 460 V or 575 V.
NEVER OPERATE THE CP COMPRESSOR AT A VOL-
TAGE OTHER THAN THE ONE SHOWN ON THE
ELECTRICAL CABINET.
The electric current supply to the CP Compressor must comply
with the following table :
Type of cable to be used : 167 °F
Power cable size
(for a maximum 32.8 ft length)
VOLTAGE
CPE
230 V 460 V 575 V
75 AWG300 AWG1 AWG2
100 AWG500 AWG000 AWG0
125 - AWG0000 AWG00
150 - AWG250 AWG000

SAFETY REGULATIONS
It should be remembered that safety regulations require :
• An earth socket to be used.
• A manual isolating switch, cutting all three phases ; this switch
must be clearly visible near the CP Compressor unit.
• The electric current must be cut whenever maintenance work is
carried out on the compressor (except for pressurized oil change)

Fuses to be used for

CPE the isolating switch (RK5)
230 V 460 V 575 V
75 250 125 90
100 350 175 125
125 - 200 150
150 - 250 175
Note : For specific information on variable speed machines see
Chapter 6.

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Section 3 - Commissioning
A - Preparation for start-up
Before starting the set for the first time, the operator must get to Check the direction of rotation (following the arrow on the coupling
know the different systems. The main locations which have to be housing rep. 1-fig. 7) by pressing the "Start" button, followed
examined are shown on the figures. immediately by the emergency stop. If it does not spin in the right
direction reverse two stages of the power cord. When it rotates in
IMPORTANT the correct direction, the oil level (fig. 19) should drop after 4 or
Before start up, make sure that transport red wedges have been 5 seconds of operation.
effectively removed. It is also very important to verify the direction of rotation of the
fan (indicated on it by an arrow) anti-clockwise seen from inside
ATTENTION the compressor or clockwise seen from outside the compressor.
The power circuit must be turned off whenever adjusting electrical 1 - Press the ON button, the motor starts up.
equipment or to prevent accidental starting.
2 - Keep it running for a few minutes with the discharge valve
Loosening of electrical power cables that may be due to vibra- slightly open to observe the compressor under load. Ensure
tions caused by transport or initial heating entails abnormal heating that there are no leaks. Reblock the connectors if necessary.
of contactors, which may even destroy them. Therefore, these 3 - Press the OFF button. The motor will stop and the unit will
cables must be re-tightened at line contactor incoming and automatically vent to atmospheric pressure.
outgoing, star and triangle before use.
C -Discharge pressure adjustment
Before start-up, check the following points :
1 - Make sure that the unit is properly grounded. The unit is adjusted in the factory for a MAXIMUM pressure (for
2 - Check the oil level in the tank. the maximum output from the outlet of the central unit) of 100,
NOTE : the tank has been filled with suitable oil in the 125, 150 or 175 PSI depending on the model. To adjust the
factory. See Section 7 - A for the quality of oil to be used backflow pressure setting to a lower value, refer to the manual of
or for oil renewal conditions. the electronic controller.
3 - Make sure the oil change valve is properly closed.
D - Parallel compressor assembly
ATTENTION If the CP compressor is intended to operate in parallel with other
The oil filler cap, the oil change valve and plugs must always CP or similar compressors, the discharge piping can be linked
remain closed during operation and never be opened before the together.
system has been completely vented to atmospheric pressure see
Section 7 - A. If the CP compressor is intended to operate in parallel with other
CP or similar compressors, there must be an air tank common to all
the alternative compressors. The pulses emitted by alternative
B - First start-up compressors may cause serious damage to the minimum pressure
Check the voltage between the three phases before using the unit valve and the CP oil separator, and disrupt the regulation system.
for the first time. When the rotary compressor is operating in parallel with an alter-
native compressor, the latter should be adjusted so that the rotary
compressor takes the main load. It is cheaper to run this way.

E - Safety
The oil used for cooling the compressor is a liquid combustible
under the effect of strong heat. In case of fire in the compressor, it
1 is essential to respect the regulatory measures on the compressor.
The type of fire in a compressor is defined as "class B" and in
presence of a live electrical conductor, it is recommended to use a
CO2 extinguisher functioning by "smothering" (starvation of
oxygen) while observing the user instructions applicable to the type.

Fig. 7

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Section 4 - Operation
A - Air and oil circuits
1 - Air circuits (see Fig. 8) Key fig. 8
The air is sucked into the compressor through a filter (rep. 23). 20 Compressor
This air passes through the compression element where it is mixed 21 Suction element
with oil injected during compression. Inside the oil tank, the
compressed air is pre-de-oiled by shocks, then flows through the 23 Air filter
oil separator (rep 49). It then passes through the mini pressure 26 Oil filter
valve (rep 34) forming a check valve, the aftercooler (rep 51A),
the condensate separator (in option), and then the outlet valve 34 Minimum pressure valve
(not supplied) to which the distribution pipe is connected. 41 Ventilator

2 - Oil circuit (see Fig. 8) 47 Thermostat valve

49 Oil separator
The oil, under discharge pressure, flows from the bottom of the tank
through the cooler (rep. 51H), the oil filter (rep. 26) which retains 51 A Air cooler
solid impurities, and then into the compressor (rep. 20). At each cold 51 H Oil cooler
start, the thermostat valve (rep. 47) short circuits the oil cooler, thus
enabling the optimum operating temperature to be reached quickly. 56 Motor
When it leaves the compressor, the oil returns to the tank. Part of the 57 Tank
oil remains suspended in the air as mist. This mist passes through the
oil separator. (rep. 49). The remaining oil, which is separated by the
last stage of the oil separator, is drawn up by a dip tube and dispatched
to the compressor.

Fig. 8 - Air / oil circuit

34

26
49 47

57

21
23

56 51A
51H
20

41

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B - Regulation principles
1 - "On off Load" regulation (see Fig. 8bis) Key fig. 8bis
standard version
20 Compressor
The CPE 75-100-125-150 units are fitted with an automatic 21 Suction housing
regulation system, enabling the compressor to be stopped after 22 Solenoïd valve
it has run unloaded for a given (adjustable) period of time. This
period of unloaded running is necessary to avoid excessively 23 Air filter
close start-ups in highly varied periods of compressed air 25 By-pass valve
consumption.
26 Oil filter
When the compressor reaches its maximum pressure, the pres- 34 Minimum pressure valve
sure switch (rep. 45) closes the electrovalve (rep. 22). The
36 Pneumatic pump out
compressed air on the suction housing piston and the vacuum
piston are depressurised; the housing is closed and complete drai- 37 Safety valve
nage of the tank is carried out. 41 Ventilation

The compressor draws in air via a by-pass valve (rep. 25). 45 Regulation pressure switch
46 Safety temperature sensor
The low pressure obtained in the oil tank enables the compressor
47 Thermostat valve
to be lubricated and cooled during the whole unloaded running
period. 49 Oil separator
51 A Air cooler
If the user network's compressed air pressure reaches the mini-
mum pressure switch trip value before the end of the unladen 51 H Oil cooler
running time, the pressure switch (rep. 45) opens the electrovalve 57 Oil tank
(rep. 22), causing the suction valve to open and the vacuum
system to close. The compressor compresses at full rate again.
2 - Speed regulator
When the compressor stops, the solenoïd valve (rep. 22) is no ( see Section 6)
longer powered and closes; the suction housing closes and the
oil tank is evacuated. The tank is thus vented to atmospheric
pressure, for the next time the unit is started up.

Fig. 8bis - "On off Load" regulation

36

22

41 45
35 34

51A

21 37
51H
23 49

25
57
46
20

47
26

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 2 - Option overview
Section 5 - Options
- This option is used as a replacement for the standard filter
- Certain atmospheric particles are smaller than 7810-6 in, a limiting
A - Level detection bleed valve (Fig. 9) threshold for traditional paper cartridge filters. The filter increases
filtration effectiveness by eliminating 99.97% of particles that
1 - Description are larger than or equal to 11810-6 in.
The BEKOMAT type level detection bleed valve allows all air - The quality of the air intake by a compressor is essential. Low
consumption to be avoided while the compressor is not running. quality air creates the following :
• Quick pollution of the oil thus an increase in draining cycles.
2 - Option overview • Binding of the air / oil separator before 4000 hours thus an
- There is no air consumption due to the level detection system : an increase in maintenance cycles and operation costs.
inductive sensor detects the level of condensation and thus controls • Pollution increases the elements that filter into the air and oil,
the opening of the electric bleed valve. A low level of condensation speeding up the damage to the mechanical components of the
is also detected in order to close the electric bleed valve and to prevent compressor, screw element,...
compressed air from being wasted.
Filters in compliance with standard ISO 5011/2000.
- This type of purge valve does not require any maintenance. The - Exceptional filter longevity, from 18 months to 3 years of
purge valve does not require the use of the metallic intake filter that continuous service (24 hours a day, 7 days a week), which is a
is usually installed on electronic purge valves to protect the solenoid little more than 10,000 hours of operation of the compressor under
valve. The solenoid valve will not be damaged. normal conditions.
- Condensate treatment is made easier because it is not evacuated by - Installation of the filter(s), depending on the model, outside the
pressure, which enables easy separation of the water and oil stages. compressor, for intake of fresh air, hence resulting in a lower oil
temperature and more efficient compression (Fig. 10a and 10b).
Fig. 9
Extraction duct

1 4
VORTEX pre-filter

Air filter
2 5

6
3

x y
1 - Condensation intake 4 - Main duct
2 - Capacitive sensor 5 - Electric valve
3 - Receiver 6 - Membrane x y
CPE/CPVS 75-100 87,86 in 13,58 in
3 - Technical features CPE/CPVS 125-150 87,86 in 16,93 in
Maximum capacity of the compressor : 706 cfm
Working pressure : 11,6 / 232 PSI
Operating pressure
Electric power supply
: 33,8 / 140 °F
: 115 V / 24 V
Fig. 10a
AC socket in the compressor electric cabinet.

Cartridge
B -Advanced filtration to the compression
air inlet (Fig. 10a and 10b)
1 - Description

This system is equipped for "high efficiency" air filtration in order

to improve the quality of the air intake and to preserve the
compressor's oil and internal filter components.

This option is particularly useful in very dusty surroundings.

Fig. 10b

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3 - Technical features

Operating temperature :
-104 °F to 194 °F

C - Pre-filtration panels
1 - Description

Installing air filtration panels on the ventilation intakes

(compressor and built-in dryer) guarantees protection of the
compressor's internal components and an increase in air sucked Galvanised steel covered frame.
into the compression assembly. This option is recommended if Flammable medium (belonging to fire protection class M1) made
the forced filtration option is installed (see § B). of polyester fibres.
Pleated medium on support grid placed downwards in the direc-
2 - Option overview tion of the airflow.
The pre-filtration panels eliminate 90% of the particles normally Support grid
admitted inside the compressor and considerably decrease internal
contamination of the compressor. Fig. 12
The high quality of the ventilation air is also essential for protecting
internal components of the compressor and, more specifically, the
motor and the air / air and air / oil exchangers. Clogging in the
exchangers creates an increase in temperature, deterioration of Pre-ventilation
lock
the lubricant and the motor becomes overloaded thus increasing
the energy consumed.
Disassembly
The quality of the air drawn in by a compressor is essential. Low hinges
quality air results in the following :

• Fast pollution of the oil thus an increase in oil change cycles.

dimensions (in)

• Increased pollution of the air and oil filtering components that 4 pannels pre-filtration
increases the deterioration of the mechanical components in the
compressor, screw block, ...
3 - Technical features
• Binding of the air / oil separator before 6000 Hours thus an
FILTER MEDIUM :
increase in maintenance cycles and maintenance costs.
Degree of filtration : 90% of the dust emitted is filtered.
Access to the filtering medium is allowed by removal that does Total nominal flow : 8946 cfm
not require any particular tool. The panel frame can be unlocked Filter panel number : 4
manually in order to clean the medium. Initial charge loss : 75 Pa
Dimensions : Width : 19.68 in
Exceptional longevity of the medium that is quick to take apart. Length : 24.6 in
The medium can be scoured by blowing compressed air in thus Thickness : 7.87 in
increasing the usage term for the filtering medium.
This option may be installed on a compressor already in place.
Fig. 11

Easy to disassemble for rapid cleaning

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D -Automatic restarting 2 - Option overview

1 - Description The advantages of this option are:

This management system enables the compressor to be restarted - starting the compressor with the warranty that it will work (if
automatically after a power cut. this option was factory-installed), the configuration of the rota-
tion direction having been configured during the production tests.
2 - Option overview - protecting the motor and the electrical fittings from any loss of
Not available in standard version in order to prevent any incident during power supply (phase cuts, blown fuses, voltage threshold lower
maintenance operations carried out by a non-trained person. This op- than 130 volts).
tion is proposed in cases where the production of compressed air should - protecting the compressor (motor and especially the compres-
suffer only the minimum periods of shutdowns. sion assembly) when restarting it following electrical work on
The standard microcut time accepted by AIRLOGIC is the power supply line or when switching from the mains supply
approximately : 40 ms. to a backup power supply, such as a power generator.

However, certain electrical fittings create longer micro cut-offs

that will cause a compressor shut down, then a manual restart.
3 - Operation
Automatic compressor restarting enables immediate air produc- In the event of a phase failure (detectable by this option) or an
tion after a power cut and thus avoids the time lapse required for incorrect rotation direction, the trip switch sets off the machine's
manual compressor restarting that would mean a fall in pressure safety system (preventing immediate stopping and starting of the
in the air circuit. compressor) and shows the following message on the display of
Particularly used for industries where air production should not the electronic plate: "ventilation flaw".
be subject to shut downs that waste the products manufactured or
damage the production equipment. 4 - Features
THIS OPERATION REQUIRES THE CONFIGURA- scanning time / measurement cycle < 80 ms
TION OF MENUS IN THE CONTROLLER, ACCESS minimum operating voltage 200 volts
RESTRICTED TO TECHNICIANS CERTIFIED BY maximum acceptable voltage between phases 500 volts
power consumption 15 VA
CHICAGO PNEUMATIC COMPRESSORS.

AN INFORMATIVE INSERT MUST BE PLACED G - Centrifugal separator

ON THE ELECTRIC CABINET TO WARN THE Fig. 16
USER OF THE RISK THAT THE COMPRESSOR
MAY AUTOMATICALLY RESTART AT ANY TIME.

3 - Technical features
This option requires configuration of the electronic plate and ins-
tallation of an informative insert on the door of the compressor
electric cabinet.

Every time the compressor stops, it must be secured by

opening and locking the electric section switch.

E - Remote starting and stopping

This option allows the compressor to be remotely started and
stopped. However, in all cases, stopping the compressor at the
machine itself is essential. If the compressor is shut down from a
distance, it may be restarted from a distance as well. For any inter-
vention to be conducted on the compressor, it is essential to activate
the emergency stop of the compressor in order to ensure safe con- 1 - Description
ditions (Refer to AIRLOGIC Manual)
This device allows bleeding of the condensates formed in the air
F -Rotation direction indicator - cooler.

Phase controller 2 - Description of the option

1 - Description The cooling of the compressed air allows the suction air to be
The phase controller option is designed to: dried, thus removing the humidity that collects in the bottom of
- control the rotation direction of the machine's electric power the separator after being condensed in the aftercooler. The
supply phases. condensates are evacuated from the separator through a trap with
a solenoid drip valve or a trap with level detector if this option is
- check that electric power is supplied to each phase.
installed.
These two functions are permanently guaranteed.

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Section 6 - Specific information for CPVS 100 - 125 - 150
Refer also to the chapters concerning the standard compressor. 2 - Safety instructions
"CPVS" compressors are compliant with the Electromagnetic
No connection work is allowed when the inverter is
compatibility in industrial environments Standards 50081-2 and
1 under power.
50082-2
No measurement work is allowed on the inverter when
A - Description (cf Section 1) 2 it is under power.

Standard equipement To undertake any work on the inverter, it is necessary

A electronic frequency adjusting device replaces the star-delta to disconnect the equipment from the mains. Wait for
starter. the internal ventilation to stop and the indicators to be
3 turned off. Then, wait 5 minutes before opening the
cover.
B - Safety
No voltage or insulation verification test is allowed on
For your safety, please respect the instructions carrying the warning
symbols as given below:
4 the inverter components.
SAFETY RULES Disconnect the cables from the motor and the inverter
5 before taking measurements on them.
The safety rules require:
• The presence of an earth socket Do not touch the integrated circuits, the electrostatic
• The existence of a manual switch cutting-off the three pha- 6 discharges may damage them.
ses that should be placed visibly near the CPVS
• It is necessary to cut out the electric current before any Before connecting the inverter, make sure that its cover
intervention on the compressor (except drainage under pres- 7 is properly closed.
sure).
Make sure that no compensation capacitor of cosine
= Dangerous voltage 8 phi is connected to the motor cable.

= Attention

ELECTRICAL INSTALLATIONS MUST ONLY BE

C - Installation
CARRIED OUT BY A SPECIALISED AND COMPETENT
TECHNICIANS The "CPVS" must be installed away from a transformer
or autotransformer.
1 - Warning (see Section 2 and 3).
The fuses for the section switch are defined as follows
The internal components and the plates (except the
electrically insulated I/O terminals) are at the mains Main Voltage 460 Volts / 3 / 60Hz
1 voltage when the inverter is connected to the mains.
This voltage is extremely dangerous and can cause CPVS 100 125 150
severe injuries or even death in case of involuntary Nominal current (A) 155 186 210
contact.
Power supply cable AWG 00 AWG 000 AWG 250
When the inverter is connected to the mains, the Fuse protection 175 200 250
2 connection terminals U, V, W of the motor as well as ( Type J )
+/- connectors of the braking resistors are under power
even if the motor is not running.
ATTENTION
The I/O control terminals are insulated from the mains, Motors and drives can only be guaranteed where the supply voltage
the relay outputs can nevertheless be under power even "460 V" does not exceed the rated voltage by more than 10%.
3 if the inverter is disconnected. This also applies to other The connection of the power supply to the section switch (if
I/O control terminals even if the X4 switch is in OFF present) requires the use of properly insulated terminals.
position (Stop).

The inverter has a load circuit of thermally limited

capacitors. Therefore, it is important to allow
minimum 5 minutes between two successive power-
4 ons. If this instruction is not respected, the switch and
the resistor of the load circuit may be damaged.

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D - Commissioning
1 - Preparation for start-up 4 - Assembly and settings for parallel operation
(See Section 3). with other compressors

Pressure for the CPVS compressor must be adjusted at a value

ATTENTION
within the range of adjustment values for the rest of the
compressors..
The power circuit will have to be cut off when adjusting the
electrical equipment or if inadvertent start-up is to be avoided.
Before start-up, check the following points: Adjustments pressure
1 - Ensure that the unit has a suitable earth,
2 - Check the oil level in the compressor,
Stop P
NOTE: the tank was filled in the factory with a suitable oil. See
Chapter 7 - A for the quality of oil to be used and for the oil
renewal conditions.
Set
3 - Check that the drainage valve is properly closed.
point 1
4 - Make sure that the conveyor assembly's blocking lugs
(compressor) have been removed from the compressor
silentblocks.
Various
ATTENTION compressors
The oil filler plug, the valve and the drainage plugs have always to
be closed during operation and must never be opened before the CPVS C1 C2 C3
system has reached atmospheric pressure.
5 - Regulating the pressure by changing the speed
2 - Control of rotation direction on start up
This method of regulating the pressure allows precise adjustment
This control must be implemented when the compressor is put
of the compressor's flow-rate at the compressed air demand valve:
into operation for the first time, after any work has been carried
out on the motor and after any changes to the mains supply. The accuracy is of the order of 1.425 PSI when pressure regulation
is achieved by changing the speed, provided that the flow-rate
IMPORTANT : lies between the maximum and minimum rates for the compressor.
• Check the direction of rotation (as per the arrow shown on the • The principle of the pressure regulation by changing the speed
sump) by jogging over with the START button.
The AIRLOGIC controller controls the motor and the compressor
If it is incorrect, swap over two of the motor's phase cables under as a function of the system pressure as measured by an internal
the drive. pressure sensor (fig. 18a).
When rotating in the right direction, the oil level (fig. 18) must
drop after 4 to 5 seconds of operation. - If the mains pressure is weaker than the pressure set point
• Also check the direction of rotation of the fan for air-cooled (user-defined parameter in the AIRLOGIC) the motor will
plants (counter-clockwise, as seen from inside the casing). accelerate and the pressure will increase (fig. 18b)
1 - Press the START button so that the motor starts. - If the mains pressure is stronger than the pressure set point, the
2 - Allow to rotate for several seconds with the discharge valve motor will slow down causing the pressure to drop.
slightly open to observe the compressor at load. The AIRLOGIC provides the compressor control functions and
3 - Press the STOP button. The motor stops and the plant also controls the whole pressure feedback loop. It therefore
automatically returns to atmospheric pressure. includes a device to compare the indicated pressure with that from
the pressure sensor, associated with a compensating device,
3 - Setting of pressure - compressor Proportional integral control PI (fig. 18c).
(Refer E Section 1 refer also to the AIRLOGIC controller manual) The drive, a result of the latest developments in power electronics,
is one of the smallest in size on the market, thanks to its use of
The unit is factory pre-set for a given delivery pressure. As an high cut-out frequencies with IGBT transistors.
energy saving measure, it is strongly advised to reduce the pres- At the same time, the motor control method known as "open loop
sure to the exact requirement by adjusting the "Set point 1"setting. vector flux control " provides good stability for the system against
The stop pressure"Indirect shutdown"used when running at less disruption.
than the minimum flow-rate - must be set to 7.25 PSI above that
In this way, the pressure feedback loop is more stable to sudden
of the "Set point 1". In this way, the current used by the compressor
changes in consumption (changes in the flow-rate).
is minimised (see notice AIRLOGIC).
Do not set the stop pressure at a level beyond the machine's max P.

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62 305 793 65 Page 17
 Fig. 18a
The principle of the pressure regulation by variable speed

Pressure Controller Drive Motor Compressor Tank

required unit

Frequency speed

Pressure sensor

System

• Pressure regulation for low rates of flow • Energy saving

For an air consumption rate lower than the minimum rate of flow For demand of compressed air within the machine's flow range -
for the compressor, the pressure is adjusted by the machine's time- min flow to max flow, the frequency converter or the variable
delayed START/STOP controls. speed drive feed the motor in order to ensure that it turns at the
speed required to supply air demand both for pressure and flow.
Since the operation element cannot function below a certain speed
(corresponding to the minimum output), the compressor continues It is used to adjust the power supply to the motor (and thus the
to run and compress at the minimum speed until the pressure reaches compressor) to the exact power requirement for the compression
the limit called "Indirect shutdown ". of the air, without a drainage stage being necessary.
Once this threshold has been reached, the motor will stop, the COMMENT :
compressor will go into stand-by mode after a certain period of
Energy savings are increased if compressor maintenance is carried
inactivity and the full drainage process will be carried out.The pres-
out in accordance with the maintenance instructions and frequency.
sure then drops towards the indicated pressure and, at the end of
the minimum time delay (since reaching the no-load pressure), the
drive allows the motor to restart. The pressure then rises again and
the cycle starts over (fig. 18 d).
To avoid pumping the system - frequent stop / start - drainage
time may be increased
(cf. notice AIRLOGIC).

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 Fig. 18b
Fig. 5 b Fig.5 18c
Fig. c Fig.
Fig. 518d
d
Pressure
Stop
threshold

Instructions
Required
pressure

Time
Speed

stop timing

minimun time
Min speed

Time
Flow Q

Min Q

Time

E - Operating incidents
The staff in charge of maintenance of the CP compressor must become fully acquainted with this compressor, in order to be able to easily
diagnose any anomaly. Under normal operating conditions, the CP compressor must provide full satisfaction.

1 - Main incidents

The main incidents likely to occur are listed below, along with the remedies to be applied. The keys to the control lamps relate to the
instrument panel (refer to the AIRLOGIC Manual ).

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Section 7 - Maintenance
The maintenance period is limited to several essential operations. The summary on the CP Compressor instrument panel shows at a
It is strongly recommended that the power supply be cut off during glance the type and periodicity of operations to be carried out for the
any adjustment or repair. compressor to function correctly.

Operations to be carried out

Parts Daily Every Every Every Every Every Every Every Observations
500 hr 150 hr 2 000 hr (*) 4 000 hr 6 000 hr 8 000 hr 12 000 hr
Service A Service B Service C
Drain the condensates
Draining cock X from the cold oil circuit
(Section 7 - G)
Check and top up if
Oil level X necessary
(Section 7 - A)
Air filter X Replace the filter
Oil tank, Oil change, oil refill
Oil change X X with recommended oil
(Section 7 - A)
Control Renovation of the
Suction housing cleaning Overhaul kit housing. Use the
lubrication suction housing kit
Check the cleanliness of
Oil return pipe Overhaul the oil return pipe and
Kits the state of the seal
(Section 7 - F)
Change the part
Oil separator X according to the
instrument panel indication
(Section 7 - E)
Oil filter X X Filter change
Oil cooler Blowing of cooling
Final coolant X elements
Cleaning (Section 7 - D)
Control Exchange the accessories
Valve at minimum cleaning Overhaul kits supplied with the
pressure lubrication maintenance kit
For motors fitted with
Motor for grease fitting, use
CPE X KLUBERQUIET
75-100-125-150 BQH72-102 (0.56 ocs
per grease fitting)
For motors fitted with
Motor for grease, use
CPVS X KLUBERQUIET
100-125-150 BQH72-102 (0.56 ocs
per grease fitting)
Electric cabinet X X Retighten power cable
connections.
Safety temperature Check operation
test X (Section 7 - H)

NOTE : maintenance kits are available (see spare parts list). (*) or at least every year

A - Oil level and change This oil was specially designed for Chicago Pneumatic
(see fig. 19 and B Section 1) Compressors and guarantees to the operator an oil change period
The recommended oil used for the first compressor fill up is a of 8000 hours, with the replacement of the oil separator filter
synthetic oil with the following properties : after 4000 hours.
- viscosity : 40 cSt at 104 °F
- viscosity index : 130 minimum THE FIRST OIL CHANGE MUST BE CARRIED OUT
- antioxidant additives AFTER THE FIRST 500 HOURS OPERATION.
- anti-rust additives
- anti-foam additives

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Using a synthetic oil for compressors is also acceptable and means • Reinitialise the timers that will warn you when to carry out the
less frequent oil changes : please speak to us about the compatibility next oil change and the next oil filter change
and oil change methods. (see the AIRLOGIC Manual),
• Reseal the filler cap when replacing it and check that all openings
The oil change and the replacement of oil filter must be carried are properly closed.
out when the indication is seen on the electronic controller and • The compressor can be restarted only after pressing the button
when the corresponding time counter reaches "0" (refer to C several times to return to STATE 0.1. Check the clamping of
electronic controller manual). connections.
• After restarting, check that there are no oil leaks.
Drain the compressor when warm. For this, shut it down taking
care to disconnect the power cable. Release pressure in the tank NOTE
by unscrewing the filler plug by a single turn. Open the purge valve
If the oil is in a bad state ; that is a pungent smell or contains
and drain the oil. Do not forget to close the valve after draining
particles or varnish or other solid matter, the system will have to
the oil.
be rinsed : pour about 50% or the normal contents of clean oil and
After maintenance, reset the time counter which tells you how operate the unit for 3 hours and carefully change the oil. During
long you have before the next oil change is due, refer to electronic rinsing, leave the old oil filter cartridge in the compressor.
controller manual.
B - Air filter
OIL LEVEL
(see B Section 1)
When shut down, the MAXI level of oil is located at ¾ from the
bottom of the indicator, the MINI level corresponds to the lowest The air filter is of the dry, encapsulated type. Change the
visible parts of the indicator (rep. 1 Fig. 19). cartridge every 2,000 hours. Check the cleanliness of the filter
Fig. 19 every week and change it if necessary. (see notice on the
electronic plate for resetting the time).

ATTENTION :
If you do not replace the filtering element when needed, per-manent
dirt build-up will result. This reduces the air inflow to the
compressor and could damage the oil separator and the compressor.

C - Turbine
Replacement of the complete fan is recommended if one or more
blades are deformed or broken If replaced, check the fan rotation
1
direction reversal of the rotation direction will reduce compressor
cooling and damage the motor in time. If unit runs continuously for
about a day, it will shut down
D - Oil and air cooler on high temp if fan rotation is
wrong.
The aluminium air and oil cooler is a vital system in the CP
Compressors. It needs special care. In order to avoid deforming
CHECKING THE OIL LEVEL MUST BE CARRIED OUT or destroying the tube bundles, cooler connectors and lines must
JUST AFTER STOPPING THE COMPRESSOR be dismantled or assembled while maintaining in rotation the
(THERMOSTAT VALVE OPEN). cooler sleeves using a wrench. The outer surface of the tube bundle
must always be clean to insure the best heat exchange. If leaks
DRAINAGE UNDER PRESSURE occur, seek their source by:
So as to carry out a quick and full oil change, your CP Compressors
- Stopping CP Compressors,
is equipped with a system that allows low level pressure to be
- Cleaning any greasy locations,
maintained in the oil circuit. This pressure is shown by the pres-
- Seeking leaks using conventional methods (e.g.: soap solution,
sure gauge situated in the tank. (see Notice AIRLOGIC ).
etc.).
Proceed as follows :
• When hot, compressor in load for programming a shutdown under Pressurized shutdown retains the pressure in the compressor cir-
pressure (refer notice AIRLOGIC § 4.9.3). The compressor is cuit for a few moments so that any leak can be more easily located.
emptied and stops automatically.
• Change the oil by opening the oil change valve very slowly.
• When there is no pressure left in the oil tank, change the oil filter
cartridge.
• As soon as the oil is no longer flowing, close the valve and refill
with new oil.

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E - Oil separator G - Temperature safety tests
(see B Section 1) (see Notice AIRLOGIC).
The oil separator's lifespan depends on the cleanliness of the air
IF THE SENSOR IS NOT WORKING, IT MUST BE
coming into the compressor, on regular oil filter changes, on the
CHANGED.
quality of the oil used, on the attention with which the oil tank
condensate drains are carried out and on the ambient temperature
of the room. (see notice on the electronic plate for resetting the
H - Refastening electric connections
time).
A loosening of the electric power cables leads to the contactors
Check the cleanliness of the pipe that returns the oil to be aspired ove-rheating which can lead to their destruction.
(transparent) to prevent the injector from becoming blocked and to
ensure that the oil recovered can pass through easily. Periodic refastening is therefore necessary at the star and triangle
line contactor arrivals and departures. (see Maintenance Table).
Excessive oil consumption
The presence of excess oil in the discharge air, a rapid drop in All electric power supply to the compressor must be cut off before
level show a probable deterioration in the oil separator that must opening the electric cabinet.
be changed.
The unit must first be checked to make sure that there is no oil I - Decommissioning the compressor at the
loss and that the oil return is working properly. end of its useful life
Changing the oil separator 1. Stop the compressor and close the air outlet valve.
Dismantle all the piping connected to the tank's upper flange (air 2. Unplug the compressor from the electric supply.
discharge, regulation system supply, and oil return). Undo the 3. Decompress the compressor : unplug the 4/6 piping on the
screws that hold the tank cover and remove it. oil separator cover.
- If the old oil separator must be remounted, use new seals. 4. Close and decompress the section of the air network which
is linked to the exit valve. Disconnect from the compressed
- Be very careful during installation of the oil separator so as to air exit pipe from the air network.
avoid possible damage.
5. Empty the circuits of oil and condensates.
- The new oil separator is delivered with its two seals on either 6. Disconnect the compressor condensate piping from the
side of the flange. condensate draining system.
- Slight undulations in the flange will flatten out when the screws
are tightened.
- Apply a 6 mkg torque.

F - Draining condensation water

(see B Section 1)
Condensation water prevents proper lubrication. The resulting
substantial wear leads to a reduction in the lifespan of the CP
Compressors. It is therefore essential to drain condensation water.
Draining of condensates in the oil circuit :
Draining will only take place at least 12 hours after the CP
Compressors has been shut down. It can be carried out for example
on the morning of the start-up.
To do this :
- Slowly open the oil change tap and let the water escape.
- When the oil appears, close the valve immediately to avoid any
loss.
- Refill with oil if necessary.

CAUTION
When the compressed air cools, part of the moisture sucked in by the compressor condenses. In order to protect the dryer against
the risk of an ice plug forming, it is essential to check regularly that the condensate drains are operating properly :
On the compressed air storage reservoir and on the filters :
• With a manual drain, drain regularly according to the moisture content of the ambient air.
• With an automatic drain, set the draining cycle accordingly and check that the drain is in good working condition.
This recommendation is also fundamental in a circuit comprising an absorption dryer (risk of saturation of the alumina).

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Section 8 - Trouble shooting
The staff in charge of maintenance of the CP Compressor must become fully acquainted with this compressor, in order to be able to easily
diagnose any anomaly. Under normal operating conditions, the CP Compressor must provide full satisfaction.

A - Main incidents
The main incidents likely to occur are listed below, along with the remedies to be applied. The markers of the indicator lights relate to the
control panel.

Observed defects Possible causes Solutions

1. THE COMPRESSOR DOES NOT a) Main switch open. a) Close the switch.
START b) Phase missing. b) Check the circuits.
c) Fuse. c) Replace.
d) Insufficient voltage at motor terminals. d) Check the voltage and the connections.
e) Compressor under pressure. e) Check the vacuum device and change if
necessary. Check the water-tightness
of the minimum pressure valve.

2. THE COMPRESSOR a) Ambient temperature too high. a) Make openings or install ducts to
OVERHEATS evacuate the hot air (see Section 2).
b) Obstruction of the passage of cooling b) Clean the cooler (see Section 7).
through the oil cooler. c) Check and top-up oil level.
c) Oil level too low. d) Check that the oil filter is clean. Drain.
d) Oil circuit blocked. Replace the cartridge. Check the tightness
of connections.

3. THE COMPRESSOR STOPS WHEN a) Compressor motor overload. a) Check it is connected and the electric
THE MOTOR PROTECTION connections are tight. Check the pressure
UNIT TRIPS of the compressed air and the pressure
switch settings.
b) Phase unbalance b) Check the phase intensities

4. OPENING OF SAFETY VALVE a) To clean de-oiling cartridge. a) Change the de-oiling cartridge.
b) Valve of suction box out of use or b) Check valve, piston and joints of suction
not closed. box.
c) Faulty pressure switch, sensor c) Check that the pressure switch and
or solenoid valve. electrovalve and sensor pressure are in
d) Working pressure too high good working order.

5. EXCESSIVE OIL CONSUMPTION a) Blocked oil retainer. a) Check the oil return pipes.
b) Oil leaks in the CP compressor. b) Look for oil leaks and rectify.
c) Faulty oil separator element c) Replace the de-oiling cartridge.
(see Section 7-E)

6. DELIVERY PRESSURE TOO LOW a) Incorrect pressure settings. a) Adjust the pressure.
b) The desired output is higher than that b) Check consumption and possible leaks.
of the compressor.
c) Closed suction valve. c) Check electrovalve, pressure switch,
d) Release nozzle incorrectly adjusted valve.
(modulating adjustment option). d) Check setting.

7. COMPRESSED AIR OUTPUT a) Blocked air filter. a) Clean filter.

TOO LOW b) Adjusting electrovalve not working. b) Check setting.

8. EXCESSIVE NOISE OF UNIT a) Fixing bolts of compressor or motor a) Tighten.

have come loose.
b) Soundproof panels incorrectly closed. b) Check that they are closed.
c) Transport retainer blocks (red parts) c) Remove retainer blocks.
not removed.

9. THE COMPRESSOR STOPS a) Electromagnetic disturbance a) Add an interference suppression kit

RANDOMELY OR CREATES on the Airlogic controller. (contact the after sales department)
NON-EXISTING FAULTS

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62 305 793 65 Page 23
 support
support@CPcompressor.com

1 - 877 - 861 - CPAC

CP Compressors
1800 Overview Dr
Rock Hill, SC 29730