Aerofoil Axial - Flow Fan

Safety, Installation, Operation and Maintenance Instructions

Part No.416421
 CONTENTS

Paragraphs
Safety –

Introduction And Purpose 1

General 1.1
Storage and handling 1.2

Mechanical Installation 2
General 2.1

Electrical Installation and Operation 3

General 3.1
Capacitors 3.2
Overheat protection 3.3
Bearing temperature, vibration and level monitoring sensors 3.4
Anti-condensation heater 3.5
Emergency-use fans 3.6
Fans with flameproof motors 3.7
Switch-on 3.8

Maintenance 4
General 4.1
Infrequent use 4.2

Overhaul/Extended Maintenance 5

Fault Finding 6
Electrical 6.1
Mechanical 6.2

Disposal 7

1
 Table
Routine Maintenance Procedures 1

Figures
Wiring Detail (Single-Phase Direct-Drive BT/CT Type Motor,
Standard Temperature S-Type Fan) 1

Wiring Detail (Single-Phase Direct-Drive BT/CT Type Motor,

Standard Temperature L-Type Fan, High Temperature L
and S-Type Fans) 1

Wiring Detail (Single-Phase Direct-Drive Motor with

Speed Controller) 2

Wiring Detail (Single-Phase Belt-Drive Motor with Isolator Fitted) 2

Wiring Detail (Three-Phase Direct-Drive BT/CT Type Motor,

Standard Temperature L-Type Fan, High Temperature L
and S-Type Fans) 3

Wiring Detail (Three-Phase Direct-Drive BT/CT Type Motor,

Standard Temperature S-Type Fan) 4

Wiring Detail (Three-Phase Direct-Drive Motor with

Transformer Type Speed Controller) 4

Wiring Detail (Three-Phase Direct-Drive Motor with

Change-Over Switch) 4

Wiring Detail (Three-Phase Direct-Drive Motor with

Electronic Type Speed Controller) 5

Wiring Detail (Three-Phase Motor with Isolator Fitted) 5

Fixing Arrangement of Terminal Block

(Drawing No: D258302 F) 6

Drawing of Torque Settings for Fixings

(Drawing No: D248284 K) 7

2
SAFETY

WARNING: ONLY APPROVED, QUALIFIED PERSONNEL FAMILIAR WITH THE ASSESSMENT OF HAZARDS
AND RISKS ASSOCIATED WITH FANS, AND WITH THE USE OF TOOLS AND TEST EQUIPMENT
REQUIRED TO SERVICE SUCH FANS, SHOULD INSTALL, OPERATE AND MAINTAIN THE
PRODUCT.

IF THE INSTALLER OR USER IS UNABLE TO UNDERSTAND THE INFORMATION IN THIS

MANUAL, OR HAS ANY DOUBT THAT A SAFE AND RELIABLE INSTALLATION, OPERATION
AND MAINTENANCE OF THE EQUIPMENT CAN BE ASSURED, FLÄKT WOODS LIMITED OR
THEIR REPRESENTATIVE SHOULD BE CONTACTED FOR ADVICE.

WARNINGS AND SAFETY INFORMATION RELEVANT TO SPECIFIC OPERATIONS ARE

CONTAINED AT THE START OF THE SECTIONS TO WHICH THEY APPLY.

WHEN FANS ARE RETAINED IN STORAGE, ACCESS BY UNAUTHORISED PERSONS

MUST BE PREVENTED WITH THE USE OF GUARDS, BARRIERS OR SECURE PREMISES
SUCH THAT FAN IMPELLERS WHICH MAY BE ROTATING DO NOT PRESENT A HAZARD.

1 INTRODUCTION AND PURPOSE

1.1 General

1.1.1 The Aerofoil Axial-Flow Fan is a highly efficient air movement product, designed to operate
between a temperature range of -40° to +50°C (-20°C on starting). When operating at low
temperatures, ice formation on the fan assembly must be prevented. Some fans have a
specification, which calls for operation in high temperature emergency conditions, this will be
identified on a special label on the fan casing (see also Paragraph 3.6).

1.1.2 The fan assembly is manufactured and aligned specifically to fulfil the requirement of the
installation for which it was designed. No deviation from the original requirement should be
implemented without referring to Fläkt Woods Limited head office in Colchester. Any queries
regarding safety or operating problems should be referred to the local Fläkt Woods office,
sales centre or representative, together with full fan/motor nameplate details. Should a fan
failure occur whilst the product is under warranty, the Fläkt Woods service centre in
Colchester should be contacted before any repair work is undertaken.

1.1.3 A frequency inverter type speed controller should only be used to control the fan if the
inverter complies with Product Information Specification C22a.02. A copy of the specification
is available from Fläkt Woods Limited.

1.2 Storage and handling

WARNING: WHEN FAN ASSEMBLIES ARE RETAINED IN STORAGE, ACCESS BY UNAUTHORISED

PERSONS MUST BE PREVENTED WITH THE USE OF GUARDS, BARRIERS OR SECURE
PREMISES SUCH THAT FAN IMPELLERS THAT MAY BE ROTATING (WINDMILLING) DO NOT
PRESENT A HAZARD.

3
 1.2.1 If the fan assembly is to be stored; check immediately on receipt that it is as ordered, and that it
has not been damaged in transit. Where the fan is delivered in a crate (or similar), the crate
should be considered as a protective device only. The crate must not have equipment stacked on
it, and it must not be stacked on other equipment. The crate structure must not be used as a
lifting aid unless otherwise indicated. A fork-lift truck or similar should be used for moving the
crate. The fan should be stored in a safe, clean, dry, vibration free, location. If such storage
conditions are not available the motor anti-condensation heater (if fitted), should be connected to
an appropriate electrical power supply to prevent motor condensation forming, and the fan should
be stored in an appropriate container. A regular monthly rapid spin of the impeller is
recommended to prevent grease hardening and possible brinelling of the bearings; the impeller
should not be in the same angular position after rotation.

1.2.2 When dismantling the crate to gain access to the fan assembly care should be taken to avoid
injury from sharp edges, nails, staples, splinters, etc.

1.2.3 If the fan is to be stored for 12 months or more, an inspection by Fläkt Woods Limited service
centre in Colchester before commissioning is advised.

2 MECHANICAL INSTALLATION
WARNING: IT IS RECOMMENDED THAT SUITABLE SAFETY GUARDS FORM PART OF THE INSTALLATION.
SUCH DEVICES, AND ADVICE ON SAFETY DEVICES, ARE AVAILABLE FROM FLAKT WOODS
LIMITED.

WHERE THE FAN IS DELIVERED IN A CRATE (OR SIMILAR), THE CRATE MUST BE CONSIDERED
AS A PROTECTIVE DEVICE ONLY, AND MUST NOT BE USED AS A LIFTING AID UNLESS
OTHERWISE INDICATED.

ALL LIFTING AIDS USED DURING INSTALLATION SHOULD BE ADEQUATELY CERTIFIED TO

CARRY THE WEIGHT OF THE EQUIPMENT BEING LIFTED. (SEE PARAGRAPH 2.1.1).

ALWAYS WEAR APPROPRIATE PROTECTIVE CLOTHING (INCLUDING HARD HATS, EYE

PROTECTORS AND EAR DEFENDERS) WHEN WORKING IN THE VICINITY OF THE FAN
ASSEMBLY.

DURING LIFTING OF THE FAN ALL PERSONNEL MUST BE CLEAR OF THE AREA BELOW THE
SUSPENDED FAN.

NOTE:Before installing the fan assembly, check that it has not been damaged in transit, that there is no
deformation of the fan casing, that the impeller rotates freely, and that the fan and motor nameplate
data complies with the requirement of its use. If the fan assembly has been stored the resistance of the
motor windings to earth should be measured (at 500V d.c). If any reading is less than ten megohms the
motor should be dried and re-checked before it is switched on.

2.1 General

2.1.1 The fan assemblies can be heavy (between 270 kg and 8000 kg, depending on fan and motor
size, with ancillary equipment such as silencers, guards, bellmouths, adding to the weight), are
sometimes unwieldy, and should be lifted slowly to prevent damage and distortion. Proper
precautions must be taken, and certified lifting aids used, to ensure the fan is well supported
and stable before lifting into position. Flange holes or mounting feet holes can be used for lifting
but more than one hole must be used to spread the load. If special lifting points are provided
they must be used. The fan must be nstalled such that it is correctly positioned in accordance
with the required airflow direction. An airflow indication arrow is shown on the fan nameplate.
Sharp bends in the ductwork close to the fan must be avoided. Adequate room must be allowed
round the fan for inspection and maintenance.

4
 2.1.2 The component parts of the fan assembly, including (if fitted) anti-vibration mounts, silencers,
bellmouths, flexible connectors (and their clips), purlin boxes, weather proofing, platforms,
supports, chains and harnesses, etc. must be fully aligned before being bolted together so
that no distortion or stress is placed on the equipment. Appropriate fixings, with the correct
torque applied, must be used to secure the fan into position. If in doubt about the torque of a
particular fixing, contact Fläkt Woods Limited for advice. The final position of the fan must be
strong and rigid enough to take the weight of the fan and any other weight applied during
installation. Vibration isolators, appropriate for the weight of the fan, are recommended in
order that any vibration of the fan is isolated so that no resonant frequencies are generated in
surrounding fixtures. If vibration isolators are used, flexible connectors and flexible electrical
conduit should also be used. The vibration isolators and flexible connectors must not be used
to align fixing points that are clearly misaligned. If any component parts do not easily fit
together the cause must be investigated and rectified.

2.1.3 Motors are fitted with a drain hole in each end cover, and in the terminal box. The motor
drain hole should be at the lowest point of the motor when it is installed. Plugs that cover the
drain holes should either be removed entirely if condensation is liable to occur due to large
variations in operating temperature, or removed periodically to allow any general build-up of
condensation to drain away. The frequency of plug removal will be dictated by environmental
conditions, a record should thus be kept.

2.1.4 Bifurcated fans when mounted on their horizontally axis should have the ‘tunnel opening’ facing
downwards between 3 o’clock and 9 o’clock.

2.1.5 After installation all packing materials must be disposed of in accordance with Paragraph 7.

3 ELECTRICAL INSTALLATION AND OPERATION

WARNING: NO WORK SHOULD BE ATTEMPTED BEFORE COMPLETELY ISOLATING THE FAN ASSEMBLY,
ITS ANTI-CONDENSATION HEATER (IF FITTED), AND ITS CONTROLS FROM ALL ELECTRICAL
SUPPLIES, AND ALLOWING THE ROTATING PARTS OF THE FAN TO COME TO REST.

BEFORE ENTERING THE AREA ENSURE THAT ALL FUMES, DUST, TOXIC EMISSION, HEAT
ETC., HAVE DISPERSED FROM THE LOCAL ENVIRONMENT, AND THE FAN BLADES ARE NOT
LIKELY TO WINDMILL.

THE FAN ASSEMBLY CONTAINS ROTATING PARTS AND ELECTRICAL CONNECTIONS WHICH
CAN BE A DANGER AND CAUSE INJURY. IF THERE IS ANY DOUBT THAT A SAFE AND
RELIABLE INSTALLATION OF THE FAN CAN BE ASSURED; FLäkt Woods Limited OR
THEIR REPRESENTATIVE SHOULD BE CONTACTED FOR ADVICE.

IF THE FAN ASSEMBLY IS DESIGNED FOR HIGH-TEMPERATURE EMERGENCY-USE; IT IS

IMPERATIVE THAT THE WIRING USED IS HIGH TEMPERATURE RATED, AND THAT ALL
SWITCHES AND CONTROLS ARE OVERRIDDEN DURING THE EMERGENCY OPERATION.

IF THE FAN STOPS DUE TO AN OVERHEAT SITUATION, THE OVERHEAT PROTECTION

THERMOSTAT (IF FITTED – SEE PARAGRAPH 3.3.1) MAY RESET AS THE TEMPERATURE
COOLS AND AUTOMATICALLY RESTART THE FAN IF POWER IS STILL APPLIED.

ALWAYS WEAR APPROPRIATE PROTECTIVE CLOTHING (INCLUDING HARD HATS, EYE

PROTECTORS AND EAR DEFENDERS) WHEN WORKING IN THE VICINITY OF THE FAN
ASSEMBLY.

5
3.1 General
3.1.1 The fan assembly is fitted with either a terminal box on the motor or a terminal box on the
fan duct. The electrical supply to the fan assembly should be connected to the terminal box by
an appropriately qualified electrician. It is good practice to fit a clearly marked isolator switch
close to the fan, and have a clearly marked and accessible push button starter switch remote
from the fan. The two switches allow safe control of the fan and provide a means of safely
isolating the fan during maintenance. A suitable earth must also be connected. Sufficient
cable length should be provided to allow for the flexibility of the fan on its vibration isolators (if
fitted). A connection diagram providing wiring details is supplied with larger fan assemblies.
Figures 1 to 5 show details of the wiring to the terminals of smaller fans. Figure 6 shows the
correct assembly sequence of terminal box parts, and the torque to be applied. It is essential
that no lockwashers or nuts are placed between the motor lead eyelet, connecting link or
customers supply lead eyelet (when fitted).

3.1.2 Fuses in the fan electrical control circuit must be sufficiently rated to carry the starting
current as indicated on the motor nameplate, but they should be regarded as only protecting
the wiring against the effects of short circuits or earth faults. The fuses are not suitable for
overload protection. To provide full protection for the motor, a starter panel with overload
protection should be used, and an isolator switch must be incorporated into the circuitry. The
isolator switch should be a lockable type that will allow the operator/maintainer to isolate the
fan from the electrical supply before working on the assembly.

3.1.3 If a speed controller, or other controlling equipment, forms part of the system it should be
able to control the fan within safe limits. Sufficient fan speed must be maintained to open any
shutters that may be in the air-flow. The controlling equipment should be securely located,
and should not be, or cause, a radiation hazard.
Three-wire control is preferable to two-wire control. Two-wire control can be used on motors
up to a full load current of 3 amps, but above 3 amps three-wire control is recommended
to avoid increased temperature rises in the motor windings. Care should be taken to ensure
that the fan is able to be controlled by a speed controller. Fläkt Woods Limited can be
contacted for advice on al forms of speed controllers and other control equipment supplied by
the Company.

3.1.4 Speed controllers should not be used without prior agreement with Fläkt Woods Limited.

3.1.5 Fans with a duct-mounted terminal box must have their electrical supply fed through an entry
point in the side of the box. Unused entry points must be sealed with weatherproofed plugs or
grommets.

3.1.6 Fans with a motor-mounted terminal box also have the electrical supply fed through an entry
point in the side of the box. The cable must be threaded through a gland assembly, and the
gland assembly should be tightened sufficiently to hold the cable and provide a weatherproof
seal.

3.2 Capacitors (single-phase motors only)

3.2.1. Low rated capacitors are mounted on the motor during manufacture. Larger rated
capacitors, are supplied separately and must be fitted externally from the motor. Capacitors
for flameproof motors must be located outside the hazardous area.

3.3 Overheat protection

3.3.1. Motor overheat protection (if fitted) can be fitted on all single-phase and three-phase motors.
Overheat protection is achieved by the use of either thermostats or thermistors. The
protection devices are wired in either of the following two ways:

3.3.1.1 on single-phase and 3-phase motors with a full load current of up to and
including 6.3A:

thermostats are wired in series with the motor winding; they operate by opening
and closing with temperature to automatically open circuit the winding and stop the
fan in an overheat situation (see Section 3 Warning). On cooling, the motor will
automatically re-start, however on single-phase motors of this type, manual re-start
can be achieved by removing the link between terminals K and UZ and wiring
terminals K – K directly to the motor start contactor, thermistors are wired to
separate terminals (S –S) within the terminal box; they change their resistive value
with temperature and must be wired to control the motor start contactor via a
suitable relay.

6
 3.3.1.2 on single-phase and three-phase motors with a full load current above 6.3A:

thermostats are wired to separate terminals (K – K) within the terminal box;

they operate by opening and closing with temperature and must be wired to
directly control the motor start contactor,
thermistors are wired to separate terminals (S –S) within the terminal box;
they operate by changing their resistive value with temperature and must be
wired to control the motor start contactor via a suitable relay.
Note that when the motor cools the thermostat will reset; the motor however
must not be able to start until the motor start contactor is manually reset.

3.4 Bearing temperatures, vibration and level monitoring sensors

3.4.1 Monitoring sensors (if fitted) in the fan system should be wired to automatically switch off
the fan if a fault occurs, or provide an indication of a fault. If the fan is automatically
switched-off by a monitoring sensor the wiring must ensure that it is fully isolated and will
not automatically reset. If the fan is designed for emergency use the circuit must be wired to
allow the emergency use system to override all monitoring devices and immediately switch
on the fan in the case of such an emergency situation (see Section 3.6).

3.5 Anti-condensation heater

3.5.1 Anti-condensation heaters are terminated in a terminal box on the fan and must be
externally wired to automatically receive the appropriate supply when the motor is switched
to off. When the motor is switched on the anti-condensation heater is not required and thus
must be automatically switched out of circuit.

3.6 Emergency-use fans

3.6.1 Where the fan assembly is designed for emergency-use smoke-extraction at high
temperature, the temperature/time capability will be shown on a special label adjacent to
the main nameplate. An automatic control system, or a clearly marked remotely sited
emergency-use switch, must be fitted to override all other switches and controls and
immediately switch on the fan in the case of such an emergency situation. High temperature
cable must be used between the remote switch and the fan, and the electrical supply must
be from a guaranteed or separately maintained source to enable the unit to continue running
during the emergency condition. After such an emergency the fan must be removed,
refurbished or safely disposed of (see Paragraph 7), and replaced as necessary.

3.7 Fans with flameproof motors

3.7.1 Fans with flameproof motors are designed for use in locations where there are liable to be
fumes, dust or flammable/explosive gases. Installation should be carried out by qualified
personnel. Special care must be exercised when electrically connecting such units to ensure
that a secure flameproof connection is achieved. Great care must be taken to ensure that
the thread of cable glands, or conduit, matches its corresponding thread so that the entire
installation achieves the flameproof barrier required. A stopper barrier box, where fitted,
must be filled with a barrier compound when the connections have been made. The long
cased, fully ducted, fans fitted with an ENV89 motor have their terminal box mounted on the
motor. The supply cable to the motor terminal box must be fed through the conduit hole in
the fan duct and connected into the terminal box before the fan is fully installed (i.e. before
the inlet and outlet ducts are fitted). Any electrical control gear (including the capacitor in
the case of single-phase motors) must be located outside the hazardous area if they are
not of a flameproof type. The motor should not be allowed to become coated with
dirt/dust, etc. which could restrict surface cooling and consequently raise the temperature
of the motor carcase. If in doubt about the achievement of a flameproof barrier, contact
Fläkt Woods Limited for advice.

7
3.8 Switch-on
3.8.1. Before switching confirm that the electrical supply is fully compliant with the requirement of
the motor as detailed on the motor nameplate, that the fan is correctly installed, all
component parts and fixings are secure, safety guards are in place and no loose articles are
present in the vicinity.

3.8.2. Immediately on switch-on check the assembly for smooth, low-vibration running, and check
that the current consumption is within the full load current specified on the nameplate. A trial
connection of the three-phase supply should be made to check that the fan rotates in the
required direction. If the rotation is incorrect interchange any two phases of the incoming
supply at the motor terminal block. If after correctly connecting the single-phase supply the
fan is found to be rotating in the wrong direction, the motor winding leads U1 and U2 should
be interchanged at the motor terminal block. The fan must not be switched on and off in a
manner that could cause overheating of the motor or its wiring.

3.8.3. On belt-driven motors allow the fan to run for two hours after initial installation and then check
the belt tension in accordance with Table 1 Item 8.

4 MAINTENANCE
NOTE: The maintenance procedures are designed to keep the roof unit safe, operational and fault-free.
WARNING: NO MAINTENANCE WORK SHOULD BE ATTEMPTED BEFORE SWITCHING OFF AND
COMPLETELY ISOLATING THE FAN ASSEMBLY, ITS ANTI-CONDENSATION HEATER
(IF FITTED), AND ITS CONTROLS, FROM ALL ELECTRICAL SUPPLIES AND ALLOWING THE
ROTATING PARTS OF THE FAN TO COME TO REST.

BEFORE ENTERING THE AREA ENSURE THAT ALL FUMES, DUST, TOXIC EMISSION, HEAT
ETC., HAVE DISPERSED FROM THE LOCAL ENVIRONMENT, AND THE FAN BLADES ARE NOT
LIKELY TO WINDMILL.

ALL LIFTING AIDS USED DURING MAINTENANCE, AND ALL LIFTING POINTS UTILISED,
SHOULD BE ADEQUATELY CERTIFIED TO CARRY THE WEIGHT OF THE EQUIPMENT BEING
LIFTED. (SEE PARAGRAPH 2.1.1).

ALWAYS WEAR APPROPRIATE PROTECTIVE CLOTHING (INCLUDING HARD HATS, EYE

PROTECTORS AND EAR DEFENDERS) WHEN WORKING IN THE VICINITY OF THE FAN
ASSEMBLY.

4.1 General
4.1.1 Maintenance must be carried out on the fan assembly by appropriately qualified personnel
using the correct tools and equipment. A regular routine maintenance schedule should be
established, and a record kept. A list of suggested intervals are given in Table 1. Where the
environment is particularly dirty, a reduction in the intervals may be necessary. Internal and
external fan surfaces may be cleaned with low pressure clean water and non-abrasive
additives. Direct application of water from any direction to the motor drain plugs must be
avoided.

4.1.2 It is essential to ensure that all fixings on the fan assembly are secure. When examining and
checking the security of fixings during routine maintenance (see Table 1 Items 11 and 12),
those fixings that have locking devices fitted or are painted over, need not be disturbed if they
can be seen to be secure. Any locking devices that are disturbed during maintenance must be
discarded and replaced with new identical devices. Thread forming screws must have locking
compound applied when being reused. Those fixings that have no locking devices fitted and
are not painted over, should be checked at 95% of their original setting to ensure no
unnecessary disturbance of the fixing. See Figures 6 and 7 for torque setting details. If in
doubt about the torque of a particular fixing contact Fläkt Woods Limited for advice.

8
 4.1.3 In addition to routine maintenance motor bearings will in the longer term require attention. If
the motor bearings are greased through extended lubricators, the grease should be
periodically applied in accordance with the instructions on the fan or motor nameplate. A
compatible grease type must be used and it is essential that every trace of water and dirt is
removed from around the grease points and that a clean grease gun is used. Only low
pressure should be needed to inject the specified quantity of grease. If a high pressure is
required, the cause should be investigated. Grease points are generally located in the region
of the duct terminal box.

4.1.4 After maintenance ensure that no loose articles are present in the vicinity of the fan, that all
safety guards, chains or steel ropes, etc., are properly secured into their original location,
and that any temporary device used to stop the fan blades windmilling has been removed.

4.2 Infrequent Use

4.2.1 If the fan assembly is to be used less frequently than once a month, or for emergency-use
only, the following additional maintenance procedures should be carried out, and a record
kept:

4.2.1.1 the resistance of the motor windings to earth, should be measured (at 500V
d.c) each month. If the reading is less than ten megohms, the motor should be
dried in a warm airflow (typically 40°C) and re-checked before running the
motor,

4.2.1.2 the fan should be operated for at least two hours each month to ensure
correct lubricant conditions in the bearings,

4.2.1.3 the ‘emergency-use’ system should be run continuously for a minimum of fifteen
minutes each month, the test should ensure that the emergency use control
system overrides all other controls and switches (see Paragraph 3.6),

4.2.1.4 if an anti-condensation heater is fitted, check each month that it is automatically

switched on (drawing current) when the motor is switched to off.

5 OVERHAUL/EXTENDED MAINTENANCE
5.1 Advice on motor overhaul procedures, bearing/seal replacement, motor replacement, motor
rewinding, spare parts, condition monitoring, vibration analysis, refurbishment, etc. is
available from Fläkt Woods Limited service centre in Colchester. It is recommended that the
motor shaft seals and bearings are replaced after 20,000 hours or 5 years of normal
operation which ever comes sooner, and that the motor is rewound to its original specification
after 40,000 hours of normal operation to ensure that adequate insulation life is available
should the fan be required for emergency operation. The motor manufacturer’s specification
sheets are available through Fläkt Woods Limited.

5.2 After overhaul/extended maintenance the fan assembly must be correctly installed back into
its original position in accordance Paragraphs 1, 2 and 3 of this document. Before switching
on the motor confirm that the electrical supply is fully compliant with the requirement of the
motor as detailed on the motor nameplate, that the fan is correctly installed, that all
component parts and fixings are secure, safety guards are in place and no loose articles are
present in the vicinity. Immediately on switch-on check the assembly for smooth, low-vibration
running, and check that the current consumption is within the full load current specified on
the nameplate. A trial connection of the three-phase supply should be made to check that the
fan rotates in the required direction. If the rotation is incorrect interchange any two phases of
the incoming supply at the fan terminal block. If after correctly connecting the single-phase
supply the fan is found to be rotating in the wrong direction, the motor winding leads U1 and
U2 should be interchanged at the motor terminal block.

9
6 FAULT FINDING
NOTE: The routine maintenance procedures detailed in Paragraph 4, and Table 1, of this document are
designed to keep the fan operational and fault free.

6.1 Electrical
6.1.1 Check that the electrical connections to the unit are secure.

6.1.2 Check that the voltage applied to the unit is as specified on the motor nameplate, and is
balanced.

6.1.3 Connect an ammeter in line with each phase (one phase in the case of single-phase motors)
of the motor in turn and check that the current consumption is within the full load current
specified on the motor nameplate. Check that the supply voltage at the fan terminals is as
expected and is balanced.

6.1.4 Measure each motor winding to earth, and between each winding, using a 500V d.c
insulation tester. If the reading is less than ten megohms the reason is liable to be dampness
in the motor. To dry the motor place it in a warm (typically 40 degrees centigrade) dry
airstream and regularly monitor the motor until the insulation reading is restored to ten
megohms or greater. If the reading remains less than ten meghoms a break-down in the
motor winding insulation could be the reason, and a motor rewind/overhaul may be
necessary.

6.1.5 Ensure that there is no smell of burnt insulation in the vicinity of the motor.

6.2 Mechanical
6.2.1 Check that there is no obstruction to the motor impeller blade, that the blade is clean, and no
loose articles or debris in the vicinity.

6.2.2 Rotate the motor shaft by hand. Investigate any sound of internal chaffing, rubbing or
stiffness. Any stiffness may indicate that the bearings require lubrication or replacing.

6.2.3 Ensure that all fixings are secure.

6.2.4 On belt driven units check that the belt is not broken or slipping.

7 DISPOSAL
The metal components of the fan/motor should be segregated and separately recycled. The following
items of material should be safely disposed of in accordance with local health and safety regulations:
electrical lead coverings,
motor winding insulation materials,
bearing lubricant,
motor/fan terminal block,
paintwork,
plastic parts,
packing materials,
silencer infill (Note that a face mask and gloves should be worn when handling the infill. If the
infill is particularly dry or is damaged it should be damped-down before disposal).

10
 ROUTINE EVERY EVERY COMMENTS
MAINTENANCE SCHEDULE 6 12
MONTHS MONTHS

1. Examine the airw ays into the * Remove any debris that may ha ve accumulated round the
fan guards (if fitted). guards.

2. Examine motor cooling fins . * Remove any material/dirt build-up between the motor fins.

3. Examine impeller for dirt build- * Remov e any build-up of dirt. Ensure impeller is secure .
up and for any physical damage. Replace impeller if it is damaged.

4. Check condition and tautness * Clean safety supports . Replace them if there is any
of fan safety support chains/ deterioration/corrosion.
harnesses/ropes (if fitted).

5. Examine and operate vibration * Check operation using built-in sensor test features or
sensors (if fitted), level dummy signals. Check that the fan is automatically
switches (if fitted), and switched off, or a warning indication is provided, when
temperature sensors (if fitted). the sensors/switches indicates a fault.

6. Examine condition of safety * Clean safety guards . Replace them if there are any
guards (if fitted) and their fixings. signs of damage .

7. Check operation of anti- * Switch off the power to the motor. Check that the
condensation heaters (if fitted). anti-condensation heater is energised (drawing current).

8. On ‘belt-drive’ motors inspect * Ensure that the area is clean. Set the belt tension for
the belt and its mechanism. deflection (at the middle point of the belt) of 16mm per
metre of span as follows:
Belt Diameter of Force for
section: smaller pulley (mm) deflection (kg):
SPZ 67 - 95 1.0 to 1.5
SPZ 100 - 140 1.5 to 2.0
SPA 100 - 132 2.0 to 2.7
SPA 140 - 200 2.8 to 3.5
Z 56 - 100 0.5 to 0.8
Belt and guard replacement information is available from
Fläkt Woods Limited.

9. On ‘bifurcated’motors remove * Replace the 130mm Duramid seal if it is damaged.

the impeller and inspect the
packing located behind the
motor shaft-seal retaining plate.

10. Examine the clearance * Ensure that the gap between the impeller blade ends and
between the fan impeller the fan duct is even and adequate . If in doubt about the
blade tips and the fan duct. gap contact Fläkt Woods Limited for advice . Ensure that
Check the angle, and the the impeller blade is secure . The blade angle must not be
security of the impeller blades . changed before contacting Fläkt Woods Limited for advice .

11. Check torque of fan-to- * It is essential to confirm that all fixings are properly
support fixings. fitted, are tight, and are fully driven home (see Paragraph
4.1.2).If in doubt about the torque of a fixing contact Fläkt
Woods Limited for advice .

12. Examine motor, fan and * It is essential to confirm that all fixings are properly fitted,
ancillary equipment fixings . are tight, and are fully driven home (see Paragraph 4.1.2).If
in doubt about the torque of a fixing contact Fläkt Woods
Limited for advice.

13. Check mov ement of vibration * Check freedom of mo vement.Tighten fixings if necessary.
isolators (if fitted).

14. Check motor voltage and * Ensure voltage and full load current are as specified on
current consumption. the motor nameplate.

15. Inspect paintwork/galvanising. * Treat any areas of damage with suitable anti-corrosion paint.

16. Grease motor bearings . * Check requirement in accordance with parag raph 4.1.3.

17. Check fan assembly wiring. * Check security, and condition, of all wiring (including the
earth).

TABLE 1: ROUTINE MAINTENANCE PROCEDURES

11
 1 PHASE. INTERNAL CAPACITOR AND INTEGRAL OVERHEAT PROTECTION. 1 PHASE. EXTERNAL CAPACITOR AND INTEGRAL OVERHEAT PROTECTION.

UZ Z U UZ Z U
OTHER CIRCUITS IF FITTED :- OTHER CIRCUITS IF FITTED :-
SS THERMISTOR SS THERMISTOR
OVERHEAT PROTECTION. OVERHEAT PROTECTION.
HH ANTICONDENSATION HEATER. HH ANTICONDENSATION HEATER.
K K P K K P
SPEED CONTROL WARNING.
L N SPEED CONTROL WARNING. L N WHEN USED WITH A SPEED CONTROLLER
WHEN USED WITH A SPEED CONTROLLER CHANGE CAPACITOR LEAD FROM TERMINAL U
REMOVE LINK U TO P, CONNECT CONTROLLER TO TERMINAL P, CONNECT CONTROLLER UZ TO
TO CHANGE ROTATION TO CHANGE ROTATION
UZ TO CENTRAL K, U TO U AND Z TO P AS CENTRAL K, U TO U AND Z TO P AS SHOWN.
INTERCHANGE U1-U2 IN INTERCHANGE U1-U2 IN
SHOWN.
MOTOR TERMINAL BOX. MOTOR TERMINAL BOX.

K K UZ U Z P Z U UZ K K UZ U Z P Z U UZ

PN 502271 CD 1705 FAN CONTROLLER PN 502273 CD 1706 FAN CONTROLLER

1 PHASE. INTERNAL CAPACITOR AND REMOTE OVERHEAT PROTECTION. 1 PHASE. EXTERNAL CAPACITOR

UZ Z U UZ Z U
OTHER CIRCUITS IF FITTED :- OTHER CIRCUITS IF FITTED :-
SS THERMISTOR SS THERMISTOR
OVERHEAT PROTECTION. OVERHEAT PROTECTION.
HH ANTICONDENSATION HEATER. HH ANTICONDENSATION HEATER.
K K P K K P

SPEED CONTROL WARNING. L N SPEED CONTROL WARNING.

L N
WHEN USED WITH A SPEED CONTROLLER WHEN USED WITH A SPEED CONTROLLER
TO REMOTE IF FITTED CONNECT TO
REMOVE LINK U TO P. CHANGE CAPACITOR LEAD FROM TERMINAL U
CONTACTOR CONTACTOR COIL CIRCUIT.
CONNECTIONS SHOWN BELOW. TO TERMINAL P. CONNECTIONS AS SHOWN.
COIL CIRCUIT.
TO CHANGE ROTATION
TO CHANGE ROTATION
INTERCHANGE U1-U2.
INTERCHANGE U1-U2 IN
( F22 DUCT BOX )
MOTOR TERMINAL BOX. K K UZ U Z P Z U UZ K K UZ U Z P Z U UZ
( BT-CT MOTOR BOX ).

PN 502260 CD 1708 FAN CONTROLLER PN 502261 CD 1709 FAN CONTROLLER

WIRING DETAIL (SINGLE-PHASE DIRECT-DRIVE BT/CT TYPE MOTOR, STANDARD

TEMPERATURE L-TYPE FAN, HIGH TEMPERATURE L AND S-TYPE FANS)

1 PHASE INTEGRAL CAPACITOR 1 PHASE INTEGRAL CAPACITOR

WITH OVERHEAT PROTECTOR REMOTE OVERHEAT PROTECTOR

P Z U UZ K K P Z U UZ K K

TO CONTACTOR
N L
COIL CIRCUIT

DIAGRAM A DIAGRAM C
PN 502331 PN 502332

1 PHASE 1 PHASE

EXTERNAL CAPACITOR EXTERNAL CAPACITOR

WITH OVERHEAT PROTECTOR REMOTE OVERHEAT PROTECTOR

P Z U UZ K K P Z U UZ K K

N
TO CONTACTOR
N L
COIL CIRCUIT

CD 1651 CD 1652
PN 502478 DIAGRAM B PN 502479 DIAGRAM D

WIRING DETAIL (SINGLE-PHASE DIRECT-DRIVE BT/CT TYPE MOTOR,

STANDARD TEMPERATURE S-TYPE FAN)

FIGURE 1 12
 1 PHASE SUPPLY 1 PHASE SUPPLY

E 4 N L 4 N L
E N L
1 3 5 7 9 11

1 3
2 4 6 8 10 12

4 U2 U1 4 U2 U1
2 4 MOTOR 1 LEADS MOTOR 2 LEADS

WARNING:- IT IS NECESSARY TO PROVIDE A 3 WIRE

SUPPLY FROM THE STARTER / CHANGE- OVER UNIT
TO THE ISOLATOR. A LINK IS NECESSARY
U2 U1 BETWEEN 4 AND N ON THE SUPPLY SIDE OF THE
APPROPRIATE TRIPLE POLE SWITCH ( OR RELAY )
MOTOR LEADS
FITTED WITHIN THE STARTER / CHANGE OVER UNIT.
SINGLE MOTOR UNITS SUITABLE WOODS STARTER / CHANGE OVER UNIT EDC22

STANDBY MOTOR UNITS. CAPACITORS ON MOTORS.

CD 1543 P.N. 406605 CD1544 P.N.406606

WIRING DETAIL (SINGLE-PHASE BELT-DRIVE MOTOR WITH ISOLATOR FITTED)

INTEGRAL CAPACITOR WITH OVERHEAT PROTECTION INTEGRAL CAPACITOR REMOTE OVERHEAT PROTECTION
USED WITH AUTO-TRANSFORMER USED WITH AUTO-TRANSFORMER

1 PHASE OR ELECTRONIC CONTROLLERS 1 PHASE OR ELECTRONIC CONTROLLERS

P Z U UZ K K FAN P Z U UZ K K FAN

REMOVE LINK REMOVE LINK

BETWEEN P & U BETWEEN P & U TO CONTACTOR
( SHOWN DOTTED ) ( SHOWN DOTTED ) COIL CIRCUIT

ZorP U UZ N L CONTROLLER ZorP U UZ N L CONTROLLER

L L
SUITABLE CONTROLLERS SUITABLE CONTROLLERS
N N
MT1.- ME1.- AE1.- MT1.- ME1.- AE1.-
DIAGRAM G DIAGRAM H
CD 1653 CD 1654

EXTERNAL CAPACITOR WITH OVERHEAT PROTECTION EXTERNAL CAPACITOR REMOTE OVERHEAT PROTECTION
USED WITH AUTO-TRANSFORMER USED WITH AUTO-TRANSFORMER
1 PHASE OR ELECTRONIC CONTROLLERS OR ELECTRONIC CONTROLLERS
1 PHASE

P Z U UZ K K FAN P Z U UZ K K FAN

REMOVE LINK REMOVE LINK

BETWEEN P & U BETWEEN P & U TO CONTACTOR
( SHOWN DOTTED ) ( SHOWN DOTTED ) COIL CIRCUIT
ZorP U UZ N L CONTROLLER ZorP U UZ N L CONTROLLER

L L
SUITABLE CONTROLLERS SUITABLE CONTROLLERS
N N
MT1.- ME1.- AE1.- MT1.- ME1.- AE1.-
DIAGRAM J DIAGRAM K
CD 1655 CD 1656

WIRING DETAIL (SINGLE-PHASE DIRECT-DRIVE MOTOR WITH SPEED CONTROLLER)

13 FIGURE 2
 3 PHASE
MOTOR

U2 V2 W2
TO STARTER

W1 U1 V1 CONNECT AS DIAGRAM 'A' FOR STAR/DELTA STARTING.

OR 'B' FOR DIRECT ON STARTING
HH ANTI CONDENSATION HEATERS OTHER
KK OVERHEAT CUTOUTS (MAX AMPS 2.5) CIRCUITS
U2 V2 W2
SS THERMISTOR (OPERATING RESISTANCE 3Ω) IF FITTED

W1 U1 V1

P.N. 83771

3 PHASE
MOTOR

U2 V2 W2

A
CONNECT AS DIAGRAM 'A' FOR VOLAGES ABOVE 340
W1 U1 V1 OR 'B' FOR VOLTAGES UP TO 250.
HH ANTI CONDENSATION HEATERS
KK OVERHEAT CUTOUTS OTHER
(MAX AMPS 2.5) CIRCUITS
SS THERMISTOR (OPERATING IF FITTED
U2 V2 W2
RESISTANCE 3K Ω )

W1 U1 V1

P.N. 83772

C.D. 1344/1

3 PHASE
MOTOR

1. LOW SPEED U2 V2 W2

CONNECT AS DIAGRAM 2 FOR HIGH SPEED OR 1 FOR LOW SPEED.

W1 U1 V1
HH ANTI CONDENSATION HEATERS OTHER
KK OVERHEAT CUTOUTS ( MAX AMPS 2.5 ) CIRCUITS
2. HIGH SPEED U2 V2 W2
SS THERMISTOR ( OPERATING RESISTANCE 3k Ω IF FITTED

W1 U1 V1

P.N. 407941
C.D. 1559

WIRING DETAIL (THREE-PHASE DIRECT-DRIVE BT/CT TYPE MOTOR, STANDARD

TEMPERATURE L-TYPE FAN, HIGH TEMPERATURE L AND S-TYPE FANS)

FIGURE 3 14
 STAR CONNECTED FAN WITH
3 PHASE 3 PHASE
AUTO-TRANSFORMER SPEED CONTROLLER
CONSTANT SPEED
( SINGLE VOLTAGE ) UNREGULATED
U V W N FAN

U1 V1 W1 U2 W2 V2

TRANSFORMER
U V W L1 L2 L3
CONTROLLER 3 PHASE
SUPPLY CD 1683
3 PHASE
SUPPLY
SUITABLE CONTROLLER MT3.- DIAGRAM S
CD 1659
CONSTANT SPEED
DELTA CONNECTED FAN WITH 3 PHASE
( DUAL VOLTAGE SINGLE SPEED )
3 PHASE
AUTO-TRANSFORMER SPEED CONTROLLER U1 V1 W1 U2 V2 W2

U1 V1 W1 U2 W2 V2 FAN U V W N
STAR
V>340
3 PHASE
SUPPLY
U1 V2 V1 W2 W1 U2

TRANSFORMER
U V W L1 L2 L3 U V W N
CONTROLLER V<260 DELTA
3 PHASE
SUPPLY
3 PHASE DIAGRAM E
PN 502333
SUPPLY
SUITABLE CONTROLLER MT3.- DIAGRAM T CONSTANT SPEED
CD 1660 3 PHASE
( TWO SPEED ) UNREGULATED

U1 V1 W1 U2 W2 V2

LOW

WIRING DETAIL 3 PHASE

SUPPLY

(THREE-PHASE DIRECT-DRIVE
MOTOR WITH TRANSFORMER TYPE U1 V1 W1 U2 W2 V2

SPEED CONTROLLER) 3 PHASE

HIGH

SUPPLY
DIAGRAM F
PN 502334

WIRING DETAIL
DELTA CONNECTED FAN FOR FULL SPEED
(THREE-PHASE DIRECT-DRIVE
3 PHASE
WITH DELTA-STAR SPEED CHANGE SWITCH BT/CT TYPE MOTOR, STANDARD
DELTA CONNECTED FAN.
TEMPERATURE S-TYPE FAN)
( DIAGRAM F WITH U1 V1 W1 U2 W2 V2
LINKS OMITTED )

L1 L2 L3 U1 V1 W1 U2 W2 V2

3 PHASE
CHANGEOVER SWITCH
SUPPLY
SUITABLE CHANGEOVER SWITCH MDS3.- DIAGRAM X
CD 1661

WIRING DETAIL (THREE-PHASE

DIRECT-DRIVE MOTOR WITH
CHANGE-OVER SWITCH)

15 FIGURE 4
 3 PHASE SUPPLY 3 PHASE SUPPLY
E L1 L2 L3 E L1 L2 L3 L1 L2 L3

1 3 5 7 9 11
1 3 5

2 4 6 8 10 12
2 4 6
U V W U V W

U V W MOTOR 1 LEADS MOTOR 2 LEADS

MOTOR LEADS
SUITABLE WOODS STARTER / CHNGE OVER UNITS EDC2 OR EDC5
SINGLE MOTOR UNITS
STANDBY MOTOR UNITS.
CD 1545 P.N. 406607 CD1546 P.N.406608

3 PHASE SUPPLY 3 PHASE SUPPLY

HIGH SPEED LOW SPEED
HIGH SPEED LOW SPEED
E L1 L2 L3 L1 L2 L3
E L1 L2 L3 L1 L2 L3
1 3 5 7 9 11
1 3 5 7 9 11

2 4 6 8 10 12

2 4 6 8 10 12
2U 2V
2W 1U 1V 1W
MOTOR LEADS
WARNING :- CONTROL GEAR MUST SUIT THE 2U 2V 2W 1U 1V 1W
POLE CHANGE ( TAPPED WOUND, DAHLANDER OR PAM ) MOTOR LEADS (TWO WINDING TYPE)
WINDINGS PROVIDED.
SUITABLE WOODS STARTER / CHNGE OVER UNIT EDC22
SUITABLE WOODS STARTER / CHANGE OVER UNIT EDC19
TWO SPEED MOTOR UNITS. POLE CHANGING TYPE. TWO SPEED MOTOR UNITS. TWO WINDING TYPE.
CD1550 P.N.407356 CD1547 P.N.406609

WIRING DETAIL (THREE-PHASE MOTOR, WITH ISOLATOR FITTED)

STAR CONNECTED FAN WITH DELTA CONNECTED FAN WITH

3 PHASE ELECTRONIC SPEED CONTROLLER 3 PHASE ELECTRONIC SPEED CONTROLLER

DELTA CONNECTED FAN.

FAN
U V W N ( DIAGRAM F WITH U1 V1 W1 U2 W2 V2
STAR CONNECTED
LINKS OMITTED )

CONTROLLER U V W N L1 L2 L3 CONTROLLER L1 L2 L3 U1 V1 W1 U2 W2 V2

3 PHASE PLUS
3 PHASE
NEUTRAL SUPPLY
SUPPLY

SUITABLE CONTROLLER ME3.- SUITABLE CONTROLLER ME3.-D

DIAGRAM P DIAGRAM R
CD 1657 CD 1658

WIRING DETAIL (THREE-PHASE DIRECT-DRIVE MOTOR WITH ELECTRONIC

TYPE SPEED CONTROLLER)

FIGURE 5 16
IMPORTANT NOTE:
THIS DRAWING SHOWS THE CORRECT ASSEMBLY
SEQUENCE OF TERMINAL PARTS.
IT IS ESSENTIAL THAT NO LOCKWASHERS OR NUTS
ARE PLACED BETWEEN THE MOTOR LEAD EYELET,
CONNECTING LINK OR CUSTOMERS SUPPLY LEAD
EYELET (WHEN FITTED).
TERMINAL SCREW LOCKNUT

TERMINAL SCREW WASHER

TERMINAL SCREW LOCKWASHER

BRASS WASHER (FITTED WITH CUSTOMERS SUPPLY LEAD

CONNECTING LINKS) EYELET (WHEN FITTED)

PACKING WASHERS
( OMIT FROM ASSEMBLY CONNECTING LINKS (WHEN FITTED).
WHERE STUD THREAD CONTINUES DO NOT USE COPPER WIRE LINKS
TO TERMINAL BLOCK SURFACE )

IDENTIFICATION TAG

MOTOR LEAD EYELET

TERMINAL BLOCK

FIXING
TERMINAL SCREW
TORQUE VALUES
M4 1.5 Nm - BRASS
M5 2.7 Nm - BRASS
M6 5.5 Nm - BRASS
M8 10.5 Nm - BRASS
M10 55.0 Nm - STEEL

FIXING ARRANGEMENT OF TERMINAL BLOCK

17 FIGURE 6
 1 2 3 4 5 6 7 8 9 2
1 2 3 10
6

FIGURE
FIXING STEEL 8.8 STAINLESS M.S. STEEL INTO STEEL INTO NUTSERT SCREW INTO TAPTITE INTO STAINLESS
SIZE STEEL FIXINGS TAPPED M.S EXTRUDED AL CAST ALUM SELF CAST IRON STEEL
FORMING
A2,A4 PROP 70 NOT 8.8 GRADE ALSO SEE MOTOR TABLE BELOW ALSO SEE MOTOR TABLE BELOW A2,A4 PROP 80

M1.6 0.2000 -------- 0.1000 0.1000 ------ ----- ----- ------ 0.050 ---------
M2 0.4000 -------- 0.2000 0.2000 ------ ----- ----- 0.400 0.100 ---------
M3 1.5000 -------- 0.8000 0.8000 ------ 1.00 ----- 1.400 0.400 ---------

TYPE 7
M4 3.5000 -------- 2.0000 2.0000 ------ 3.00 ----- 3.000 1.000 ---------
SCREW & WASHER THROUGH PLATE M5 7.0000 6.0 3.5000 3.5000 ------ 6.00 ----- 6.000 1.750 7.0
INTO NUTSERT OR PRESTINCERT FOR A
WELDED NUT SEE MILD STEEL FIGURES
M6 12.000 8.0 6.0000 6.0000 5.00 10.00 7.00 10.000 3.000 9.0
TYPE 1
M8 28.000 18.0 15.000 15.000 10.00 15.00 14.00 25.000 7.500 20.5
PLAIN SCREW AND NUT WITH WASHERS
TYPE 8
HOLDING TWO PLATES TOGETHER. M10 55.000 35.0 30.000 30.000 20.00 ----- 28.00 55.000 15.000 39.0
TIGHTENING OF STUDS ON OUTSIDE
OF PVC DUCTS. M12 100.00 65.0 50.000 50.000 36.00 ----- 50.00 95.000 25.000 73.0
ALL FIGURES FOR CLAMP PLATES APPEAR
ON DRAWING 133344 M14 155.00 -------- 80.000 80.000 60.00 ----- 85.00 ------ 40.000 ---------
M16 245.00 152.0 120.00 120.00 95.00 ----- 135.00 ------ 60.000 170.0
M18 335.00 -------- 170.00 170.00 ------ ----- ----- ------ 85.000 ---------
M20 475.00 300.00 240.00 240.00 178.00 ----- 200.00 ------ 120.000 335.0
FIXING STAINLESS STEEL
M22 645.00 -------- 325.00 325.00 245.00 ----- 300.00 ------ ------ ---------
SIZE PVC DUCT
M24 820.00 515.00 410.00 410.00 310.00 ----- 420.00 ------ 450.000 580.0
M8 10.00
M27 1200.0 -------- 600.00 600.00 ------ ----- ----- ------ ------ ---------
M30 1640.0 -------- 820.00 820.00 ------ ----- ----- ------ ------ ---------
TYPE 2 M33 2225.0 -------- 1115.0 1115.0 ------ ----- ----- ------ ------ ---------
HEX HD SCREW WITH NUT CLAMPING TWO HUB HALVES TOGETHER TYPE 5
FOR JM AND CLIMAFANS FIGURES FOR ASSY & RE ASSY ARE ON TWO NUTS & WASHERS EITHER SIDE M36 2855.0 -------- 1425.0 1425.0 ------ ----- ----- ------ ------ ---------
1 2 3
THE RELATIVE ASSEY DRAWINGS OF A PLATE ON A STUD.
M39 3700.0 -------- 1850.0 1850.0 ------ ----- ----- ------ ------ ---------
M42 4565.0 -------- 2285.0 2285.0 ------ ----- ----- ------ ------ ---------
4 5 7 9 M45 5690.0 -------- 2840.0 2840.0 ------ ----- ----- ------ ------ ---------
10
FIXING PRESTICERT
INCLUDES T BOLTS 8 NOTE THAT TAPTITE SCREWS MAY NEED A
SIZE HIGH TORQUE TO START THE THREAD NOTE BRASS FIXINGS HAVE HALF THE SHEAR
BINX NUTS FORMING PROCESS STRENGTH OF CAST IRON SO USE HALF
M1.6 ----- THE FIGURES FOR TAPPED CAST IRON.
BINX NUTS GRADE 6 ARE UNMARKED RUBBER A/V
TYPE 6 M2 5 AND SHOULD BE TIGHTENED TO TORQUE WHERE A RUBBER GROMMET OR A
STUDDING SCREWED INTO MATERIAL VALUE SPECIFIED FOR MILD STEEL FLEXIBLE MOUNT IS USED A METAL TABLE 10 SHAFT END FIXINGS
M3 6

18
4 5 9 7 WITH NUT & WASHER HOLDING THEM IN PLACE. FIXINGS (ALL SIZES) SPACER TUBE OR METAL INSERT MOTOR SIZE THREAD SIZE TORQUE VALUE
M4 9 SHOULD BE SUPPLIED. THE RUBBER BT4,5 & 9

1.5 D
BINX NUTS MARKED GRADE 8 SHOULD SHOULD NEVER BE CRUSHED BY THE CT5,CT9 & D80 M6 006.000
M5 11.5 BE TIGHTENED TO TORQUE VALUE FIXINGS FOR ANY SPECIAL APPLICATION D90S & D90L M8 015.000
AS SPECIFIED FOR GRADE 8.8 FIXINGS. SEEK ADVICE FROM TECHNICAL SUPPORT.
M6 12 F22,D100L &
D112M M10 030.000

1.5 D
M8 21 NOTE!
THE NUMBERS SHOWN THUS* IN THE BOXES ARE D132S,D132M M12 050.000
M10 23 TO SHOW THE SCREW TYPES AND TAPPED MATERIALS D160M,D160L
INVENSYS
WHICH ARE APPLICABLE TO THE DIAGRAM SHOWN. D180M,D180L M16 120.000
M12 35 PAD MOUNTED BROOK HANSEN MOTORS ONLY
TYPE 3 D200L,D225S
( NOT WORLD SERIES )
SCREW WITH WASHER HOLDING PLATE D225M,D250S,
M14 -----
SCREWED INTO TAPPED MATERIAL. TABLE 7 TABLE 9 D250M,D280S M20 180.000
M16 ----- FRAME PAD HOLE ALUMINIUM CAST IRON D280M,D315S

NOTE! SIZE SIZE TORQUE Nm TORQUE Nm D315M

M18 -----
1) THESE FIGURES SHOWN APPLY UNLESS SHOWN D63/71 M8 16 - D315 ABB M24 295.000
10 OTHERWISE ON SPECIFIC ASSEMBLY DRAWINGS.
M20 ----- D80 M12 55 40
2) ALL JOINTS ARE TO BE DRY D90 M12 55 40
M22 ----- TYPE 9
LONGLOC EXCEPT STAINLESS STEEL WHICH IS TO HAVE LOCTITE 242 D100 M12 55 40
SPECIAL ARRANGEMENT OF LOCKING IMPELLER
TUFLOK/ESLOK COMPOUND, PRIOR TREATMENT OF LOCTITE ACTIVATOR T M24 ----- D112 M12 55 40
SCREW BLADE INTO HUB.
WILL DECREASE CURING TIME IF NECESSARY. D132 M16 136 100
M27 -----
3) ALL VALUES ARE IN Nm THE CONVERSION FACTOR D160/180 M20 266 196
IS GIVEN FOR lbf-ft EQUIPMENT. M30 -----
lbf-ft= Nm x 0.7375 ENSURE MINIMUM THREAD ENGAGEMENT

4) THERE IS A TOLERANCE ON TORQUE WRENCHES UP

M33 ----- OF 1 x SCREW DIAMETER

TO Å} 5% M36 -----
5) NUTS ARE TO BE TIGHTENED ONLY ONCE SO NO
FOR THIS APPLICATION SEE SPECIFIC
OVERTIGHTENING CAN OCCUR. M39 -----
ASSEMBLY DRG ONLY FOR CORRECT
6) THE HEAD OF THE SCREW MAKES NO DIFFERENCE TO
M42 ----- TORQUE FIGURES.
TORQUE FIGURES OTHER THAN HOW THE TORQUE IS
SUPPLIED. THE SCREW OR BASE MATERIAL ARE THE M45 -----
IMPORTANT FACTORS FOR TORQUE.
7) WHEN USING TWO MATERIALS ALWAYS USE THE LOWEST
TYPE 4 FIQURE OF THE TWO.
LOCKING SCREW & HEAVY WASHER 8) THE FIQURE TO BE USED ON AEG CAPACITOR STUDS
INTO MATERIAL FOR SHAFT IS 4 Nm
APPLICATIONS THESE SHOULD BE AS SHOWN 9) THE MATERIAL BEING CLAMPED IS ONLY TO BE TAKEN
ON SPECIFIC TABLE NYLON PATCH WILL HOLD INTO CONSIDERATION IF IT IS HOLLOW,VERY DUCTILE
THE TORQUE WRENCHES SHOULD BE SET TO QCP/002 THAT IS Å}5%
SCREW LOCKED AGAINST VIBRATION OR PLASTIC PLEASE SEEK ADVICE WHERE NECESSARY FOR SPECIAL APPLICATIONS OR QUERIES ASK FOR ADVICE.

DRAWING OF TORQUE SETTINGS FOR FIXINGS

 We Bring Air to Life

Fläkt Woods Group provides a full range of products and solutions

for buildings ventilation, air treatment and industrial air movement

Sales Office Sales Office Head Office

Fläkt Woods Ltd Fläkt Woods Ltd Fläkt Woods Ltd

Unit 6240, Bishops Court First Floor, Entrance 6, Axial Way
Solihull Parkway Crossford Court Colchester
Birmingham Dane Road, Sale, Cheshire Essex
B37 7YB M33 7BZ C04 5ZD
Tel: +44 (0)121 717 4680 Tel: +44 (0)161 969 1992 Tel: +44 (0)1206 222 555
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Due to a policy of continuous development and improvement the right is reserved to supply products which may
differ from those illustrated and described in this publication. Certified dimensions will be supplied on request
on receipt of order.

Copyright, Fläkt Woods Ltd, 2006.

All rights reserved. No part of this publication may be produced in any material form by any means without
the written permission of Fläkt Woods Ltd. Any unauthorised use of this data may result in legal proceedings.

FWDD/0606/PN416421