de Gier GWM User manual

GWM Installation manual
P.INS.GWM.01.EN
Version 1 – 2018/01/12

De Gier B.V., Westlandseweg 9, 2291 PG WATERINGEN, THE NETHERLANDS, Tel. [phone], Fax [phone].
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GWM Installation manual
Declaration of incorporation in accordance with the European Machinery
Directive 2006/42/EC, Annex II, No. 1B
DE GIER B.V.
WESTLANDSEWEG 9
NL-2291 PG WATERINGEN
THE NETHERLANDS
We hereby declare that pursuant to article 2G the following partly completed machines are exclusively
intended to be integrated into or mounted in another machine or piece of equipment:
Motor: GWM15 / GWM30 / GWM45
The specific technical documents pursuant to annex VII B have been drawn up and shall be sent on request by
post to the national authorities.
This partly completed machine is compliant with the provisions of the following European directives:
European Machinery Directive 2006/42/EC
European EMC Directive 2004/108/EC
The following harmonised standards (or parts of these standards) have been applied:
EN ISO 12100-1, -2: 04/2004
Safety of machinery: Basic terms, general design principles
EN ISO 14121-1:12/2007
Safety of machinery: Risk assessments
EN 60204-1:06/2007
Safety of machinery: Machinery electrical equipment
EN 60034-5:09/2007
Rotating electrical machines (only electric motors)
This partly completed machine may only be commissioned if it has been established that the machine into
which this partly completed machine needs to be built satisfies the provisions of the machinery directive.
Authorised compiler of the technical documents:
Rob Sandberg
Managing Director De Gier B.V.
Wateringen, 12-01-2018

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Index
Index........................................................................................................................................................................ 3
Dimensions.............................................................................................................................................................. 4
Technical specifications........................................................................................................................................... 4
1. Explanation of symbols and safety instructions............................................................................................. 5
2. Product ........................................................................................................................................................... 7
3. Instructions for use......................................................................................................................................... 8
4. Installation and connection.......................................................................................................................... 10
5. Commissioning ............................................................................................................................................. 15
6. Inspection and maintenance........................................................................................................................ 17
7. Warranty ...................................................................................................................................................... 18
8. Quick Troubleshooting ................................................................................................................................. 19
9. Wiring diagram 400V 3~ supply ................................................................................................................... 20
Glossary................................................................................................................................................................. 21
Thank you
for choosing a gearbox from De Gier Drive Systems’ GWM series.
Please pay careful attention to the information in the installation manual during installation and set-up. If you
have any questions or come across problems, please do not hesitate to contact us.
Our service number is: +31 174 - 29 20 89
Or by e-mail: [e-mail]
De Gier Drive Systems

De Gier B.V., Westlandseweg 9, 2291 PG WATERINGEN, THE NETHERLANDS, Tel. [phone], Fax [phone].
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GWM Installation manual
Dimensions
Technical specifications
Article number
Torque
50 Hz 60 Hz
Mass
Speed Power Voltage Current Speed Power Voltage Current
T₂ n P U I n P U I m
[Nm] [rpm] [kW] [V] [A] [rpm] [kW] [V] [A] [kg]
P.GWM15.1.400.26.K 150 2,6 0,18 230 / 400 (~3) 1,2 / 0,7 3,1 0,22 277 / 480 (~3) 1,2 / 0,7 14,1
P.GWM15.1.400.26.KW 150 2,6 0,18 230 / 400 (~3) 1,2 / 0,7 3,1 0,22 277 / 480 (~3) 1,2 / 0,7 16,4
P.GWM15.1.400.52.K 150 5,2 0,25 230 / 400 (~3) 1,4 / 0,8 6,2 0,30 277 / 480 (~3) 1,4 / 0,8 14,3
P.GWM15.1.400.52.KW 150 5,2 0,25 230 / 400 (~3) 1,4 / 0,8 6,2 0,30 277 / 480 (~3) 1,4 / 0,8 16,6
P.GWM30.1.400.26.K 300 2,6 0,25 230 / 400 (~3) 1,4 / 0,8 3,1 0,30 277 / 480 (~3) 1,4 / 0,8 14,5
P.GWM30.1.400.26.KW 300 2,6 0,25 230 / 400 (~3) 1,4 / 0,8 3,1 0,30 277 / 480 (~3) 1,4 / 0,8 16,8
P.GWM30.1.400.52.K 300 5,2 0,37 230 / 400 (~3) 1,7 / 1,0 6,2 0,44 277 / 480 (~3) 1,7 / 1,0 14,7
P.GWM30.1.400.52.KW 300 5,2 0,37 230 / 400 (~3) 1,7 / 1,0 6,2 0,44 277 / 480 (~3) 1,7 / 1,0 17,0
P.GWM45.1.400.26.K 450 2,6 0,37 230 / 400 (~3) 1,7 / 1,0 3,1 0,44 277 / 480 (~3) 1,7 / 1,0 14,9
P.GWM45.1.400.26.KW 450 2,6 0,37 230 / 400 (~3) 1,7 / 1,0 3,1 0,44 277 / 480 (~3) 1,7 / 1,0 17,2
Article number
Electric
motor
interface
Maximum
output
torque
Allowed
nominal
input torque
Allowed
maximum
input torque
Allowed
maximum
input speed
Ratio
Setting range
of number of
output shaft
revolutions
Mass
IEC 72-1 T₂ max T₁ nom T₁ max n max i s m
[-] [Nm] [Nm] [Nm] [rpm] [-] [-] [kg]
P.GWMR.1.26.K IEC71 B14 450 3,0 6,0 1800 505 0,75 – 42 8,7
P.GWMR.1.26.KW IEC71 B14 450 3,0 6,0 1800 505 0,75 – 42 11,0
P.GWMR.1.52.K IEC71 B14 300 3,0 6,0 1800 264 1,50 – 84 8,5
P.GWMR.1.52.KW IEC71 B14 300 3,0 6,0 1800 264 1,50 – 84 10,8

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1. Explanation of symbols and safety instructions
Explanation of symbols and instructions in this manual
Important procedures are emphasised in this user manual in a separate box with the initial lines printed in
bold. See below for an explanation of the various instructions you will encounter in this manual.
Symbol
Meaning
Unit
Symbol
Meaning
Unit
T
Torque
Nm
n
Rotational speed
rpm
P
Power
kW
L
Length
mm
U
Voltage
V
m
Mass
Kg
I
Current
A
Tip - Hazard -
Note - Electrical -
Instruction
Explanation
Tip
Gives the user suggestions and advice for carrying out specific tasks
easily or more practically.
Attention!
Remarks with supplementary information for the user. These remarks
draw the user’s attention to potential problems.
Caution!
Material damage can occur when the procedures are not followed
carefully.
Warning!
Serious injury to the user and/or serious damage to the product can
occur if the procedures are not followed carefully.
Risk of injury or death!
The user’s life is directly endangered
Explanation of symbols on the motor gearbox
The following symbols are shown on the motor gearbox.
Symbol
Meaning
Symbol
Meaning
Do not spray Remove the yellow vent screw
Electrically live parts PE connection point (earth)
Read the documentation

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GWM Installation manual
Installation
•Read this installation manual carefully and in full;
•Check that the delivery is complete before starting to install the motor gearbox;
•Strictly observe the step-by-step procedures set out in the installation manual;
•Observe all of the information in the installation manual, in particular all information relating to
safety, use, maintenance and servicing;
•Switch off power to the motor gearbox before starting to work on the motor gearbox or in its
immediate vicinity;
•Improper installation, commissioning, maintenance etc. of the motor gearbox can lead to personal
injury and/or material damage due to the high torque of the motor gearbox;
•Operate the motor within its electrical ratings to avoid damage to the motor, drive train or other parts
of the system.
General safety instructions
•Switch the power off before starting to work on the motor gearbox or the system and lock it out (for
example, with a padlock) to prevent it from being switched back on. This also applies to auxiliary
circuits, such as limit switches or standby heating. It is not sufficient to switch off the controller by
selecting ‘stop’ or ‘0’. The motor gearbox may also continue to operate in the «Stop» or «0» position
in response to higher-level functions, such as signals from wind or rain sensors;
•With attached or driven components there is a risk of becoming trapped or injured. Amongst other
things, the safety distances set out in EN 349 and EN 13857 must be observed and suitable
precautions must be taken, such as safety devices or a dead-man vigilance system;
•Do not allow people to stand under or close to suspended loads;
•Attached or driven parts may have a shorter service life than the motor gearbox itself;
•De Gier supplies motor gearboxes that are self-braking, but this function may not be effective under
certain conditions. We strongly recommend that for hoisting applications you use a motor gearbox
equipped with a mechanical brake and mount a fall-arrest brake on the drive shaft;
•Never loosen screws, couplings or other parts while the drive train is loaded externally;
•Also observe national legislation and guidelines regarding working conditions and safety;
•Clean up the hazard area and leave it before switching the power back on;
•Despite careful planning and compliance with all regulations, some risks cannot be prevented.
Qualified staff
All activities described below must be performed by qualified staff. Qualified staff means persons who, based
upon their training, experience and/or education, have obtained sufficient knowledge of the applicable
standards, provisions, accident prevention regulations and operating conditions and are thus able to identify
and avoid potential hazards during relevant activities (for instance, installers recommended by De Gier).
Approval by the safety officer for the overall plant or system is always required before work may be carried
out.

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3

2. Product
Manufacturer
The address details of De Gier are set out below;
De Gier B.V.
Westlandseweg 9
NL-2291 PG Wateringen
The Netherlands
I:
E:
T:
F:
www.degier.eu
[e-mail]
+31 174 – 292 089
+31 174 – 295 644
Identification plate
Example of an identification sticker which is fitted on every GWM.
1. Article number
2. Motor identification number
3. Production date
4. Serial number
5. De Gier barcode
6. De Gier QR-code
7. Company information
Article no.
:
P.GWM30.1.400.26.K
Motor no.
:
1801762 / 005261
Date
:
14
/01/2018
Article number
The structure of the article number on the above rating plate is set out below with an explanation of the
possible versions.
Code
Series
Torque
[ x 10 Nm]
Version
Voltage
[V]
Speed @ 50 Hz
[ x 0,1 rpm]
Accessories
P
GWM
30
1
400
26
K
Possible series
Possible versions
GWM
GWM with electric motor
mounted
K
No chain sprockets on output shaft
GWMR
GWM without electric motor
mounted
KW
Chain sprockets incl. chain
Materials and parts of the gearbox
Gearbox parts
Material
Gear wheels, shafts, bearings, retaining rings, …
Steel
Gear unit housing, housing parts
Aluminium
Worm gears
Bronze
Shaft seals, sealing caps
Elastomer (with steel)
Gaskets
Silicon
Limit switch and protective cover
Plastic
Gear oil
Enriched mineral oil
1

2
5

6
7
 4

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GWM Installation manual
3. Instructions for use
Intended use
GWM motor gearboxes are intended for ventilation and screening applications such as:
•Ridge ventilation: linear-drive roof ventilation systems, for example in greenhouses, poly-tunnels
garden centres, office buildings or halls;
•Side ventilation: linear-drive side ventilation systems, for instance in greenhouses, facades, halls, or
roll-up curtains or plastic tarps for greenhouses;
•Screening: for example, screens driven by cables or toothed racks in greenhouses or strip curtain
systems;
Conditions of use
The following conditions of use are applicable when using the motor gearbox:
•Operating ambient temperature range is 0°C to +60°C [32°F to 140°F];
Warning! Risk of burns!
The outside of the drive unit can reach temperatures in
excess of 60°C (140°F). We recommend fitting a
protective cover if the unit is within easy reach.
•Max. force on output shaft radial 4000 N, axial 400 N
•The gearbox is not suitable for continuous operation.
•The gearbox is suitable for S3-30% operation;
•The maximum continuous on time is 25 minutes;
•The motor gearbox may be cycled a maximum of 3 times per minute;
•The service life of the motor gearbox increases significantly with low loads and switching cycles which
allow intermediate cooling of the motor gearbox.
Restrictions on use
Structural modifications to the motor gearbox are not permitted. Any such modifications render the
manufacturer’s warranty null and void and relieve the manufacturer of liability for any consequences. In
addition, the following restrictions are applicable with regard to the use of the motor gearbox:
•Do not load the motor gearbox or drive train with a torque greater than specified;
•Do not use the motor gearbox to operate parts located in the immediate vicinity (within easy reach) of
people.
Maintain safe distances in accordance with EN ISO 13857;
•Do not expose the motor gearbox to direct water spray, rain or snow;
•Do not use the motor gearbox to operate smoke and heat exhaust ventilation systems compliant with
NEN 6093 or DIN 18232;
•Do not use the motor gearbox to operate automatic doors or gates used by people;
•Do not use the motor gearbox in explosion hazard areas if express permission has not been granted to
do so.

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Unintended use
We expressly warn against the following types of unintended use:
•Do not use the motor gearbox for lifting suspended loads especially in areas in which people are
present;
•Do not use the motor gearbox for transporting people (for example, for passenger lifts, etc.).
Transport
To safeguard the service life and correct functionality of our products, the following rules must be followed:
•Transport the gearbox carefully and avoid shocks.
•Force causes damage to the gearbox.
•Use a work platform, or lift the gearbox using hoisting equipment and appropriate slings fitted around
the output shaft.
Risk of injury or death! Falling objects can present
a danger to people!
Storage
To safeguard the service life and correct functionality of our products, the following rules must be followed:
•Ensure that the motor gearboxes are stored in a dust-free and moisture-free environment;
•The relative air humidity of the storage location must be less than 60%;
•Store the motor gearboxes at temperatures between -15 and +60°C [5°F to 140°F];
•Avoid sudden changes in temperature to prevent the formation of condensation.
If you wish to store the motor gearboxes for a lengthy period of time, you can use preservatives to protect the
unpainted surfaces, such as threaded holes and mounting surfaces for chain couplings, against corrosion.
Disposal
Drain used oil from the motor gearbox. Used oil must be collected, temporarily stored, transported and
replaced properly. Observe national legislation. Collect waste oil and dispose of it in accordance with
regulations. Clean up any spilled oil immediately using a suitable emulsifier or absorbent material.
Caution!
Improper disposal of waste oil is hazardous to the
environment and to health. Used oil must be taken to a
collection point for waste oil. Avoid prolonged skin
contact.
Dispose of housing parts, gear wheels, shafts and roller bearings of the transmission as scrap metal. The worm
gears may contain black non-ferrous metal alloys and must be disposed of accordingly. Dispose of the
packaging materials in accordance with regulations or bring them to a recycling station.

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GWM Installation manual
4. Installation and connection
Installation of the motor gearbox and adjustment of the limit switches may only be carried out by qualified
staff, see section 1.
Installation positions and vent plug
Consider the following points when determining the installation position:
•Maintain a clearance of approximately 500 mm above the protective cover for adjusting the limit
switch;
•Keep approximately 100 mm of space free behind the motor so that in the event of a power failure the
electric motor can be removed and the gearbox can be operated manually or with a drill (maximum
speed 800 rpm) using the 22 mm hex nut on the input shaft;
Every gear unit is pre-filled during assembly with the correct type and quantity of oil. Every gear unit is also
fitted with two screw plugs. Remove the upper yellow screw after mounting but before using the gearbox.
Mounting the motor gearbox
Secure the gearbox with four bolts and apply a torque of 40 Nm to 50 Nm to tighten the bolts. Use M10 bolts
with a strength class of 8.8 according to ISO 4014, threaded length in the gearbox of 10 to 15 mm.
If wood screws or wall anchors are used for mounting, the right screws and tightening torques must be
determined by the installer. These mounting materials must provide the same clamping force as the M10 bolts
with a strength class of 8.8 according to ISO 4014, tightened at 40 Nm to 50 Nm of torque.
Attention! The output shaft and the drive train must be in a
single line.
If alignment errors cannot be avoided, use a flexible
coupling.

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Mounting the electric motor
Mounting the electric motor may only be carried out by qualified staff, see section 1.
Electric motors with an interface corresponding with IEC 72-1 size 71 will fit the gearbox. Maximum allowable
input torque is specified for each gearbox in the technical specification; make sure that the electric motor does
not exceed these specifications.
Secure the electric motor with four M6x16 bolts with a strength class of 8.8 according to ISO 4014and apply a
torque of 10 Nm to 15 Nm to tighten the bolts.
Attention! Do not forget to place the parallel key in the key
slot of the electric motor shaft.
The gearbox will not function and could get damaged
when the parallel key is not fitted.
Electrical connection
Connecting and commissioning may only be carried out by qualified staff.
Risk of injury or death due to electrical or mechanical forces!
Before starting to work on the gearbox or related parts,
always switch the power off at the master switch or
operating switch and lock it with a padlock to prevent
switching on again.
Mains connection for three-phase AC motors
The wiring diagram can be found in section 9.
Attention!
Swapping the supply voltage phase connections changes
the direction of rotation of the drive. This changed
direction will not correspond with the control circuit
which is connected to the limit switch.
1. Remove the cover from the terminal block of the electric motor;
2. Insert the cable through the cable gland and rubber gasket;
3. Connect the green/yellow lead to the PE terminal (earth);
4. Connect phase L1 to terminal U1, phase L2 to terminal V1 and
phase L3 to terminal W1 (see diagram);
5. Check the direction of rotation of the output shaft in relation to
the limit switch and the control cabinet, and swap two phases if
necessary;
6. Fit the terminal block cover and gasket back on the motor and
tighten the cable gland;
7. Make sure that the cables are clear of any moving parts.

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GWM Installation manual
Connecting the limit switch
1. Remove the plastic protective cover from the gearbox;
2. Insert the cable through the cable gland;
3. Connect the working and emergency switches as indicated in the diagram below;
4. Make sure that the cables are free and tighten the cable gland;
5. Re-fit the plastic protective cover on the gearbox.
Emergency circuit
Common
Working switch [I1]
Working switch [II1]
[I2] [II2] [I1] [II1]

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Mounting the chain coupling
The gearbox is normally coupled to the load by chain coupling to the drive shaft. See the details below for
maximum torque and maximum alignment error.
Type of chain coupling
Max. torque [Nm]
Max. angle
10B Z16 (5/8” x 3/8”)
420
4°
Warning
•Do not exceed the maximum rated torque of
chain couplings and accessories.
•The load must be distributed evenly over both
ends of the shaft. Preferably fit the drive unit in
the middle of the drive train.
•The maximum angle a chain coupling is allowed
to make must remain below the specified value.
1. Mount the chain sprockets of the coupling on the output shaft and the drive tube;
2. Turn the chain sprockets of the coupling until the teeth are aligned;
3. Wrap the dual chain around the teeth of the sprockets, the ends of the chain should be on top of the
coupling;
4. Fit the chain as shown in the diagram below.

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GWM Installation manual
Replacing the limit switch
1. Remove the protective [B] cover from the motor gearbox;
2. Remove the old limit switch by removing the three screws;
3. Fit the new limit switch in its intended position;
4. Secure the limits switch by screwing the three screws hand-tight;
5. Follow the adjustment procedure on page 15 to set the limit switch.
Dismounting the motor gearbox from the system
Dismounting may only be carried out by qualified staff, see section 1.
Risk of injury or death due to electrical or mechanical forces!
Before starting to work on the gearbox or related parts,
always switch the power off at the master switch or
operating switch and lock it out with a padlock to
prevent switching on again.
Risk of injury or death due to falling objects!
Cordon off the hazard area with barrier tape.
Use a work platform, or lift the gearbox using hoisting
equipment and appropriate slings fitted around the
output shaft.
Attention!
Motor gearbox components may only be replaced or
repaired by an authorised service representative of De
Gier.
1. Set the system in a certain position in which the driveshaft and gearbox is not mechanically loaded, for
example with the vent closed;
2. Disconnect all wiring;
3. Disconnect the output shaft from the driven system;
4. Plug the oil vent hole with a ISO 4014 M4 screw, for example the yellow screw it came with;
5. Dismount the gearbox unit from its support.

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5. Commissioning
After the gearbox has been installed and connected, a test run in the system is necessary. Pay attention to the
following points during the test run:
1. Ensure that no people or objects are within the working area of the gearbox and connected parts;
2. Check whether the upper yellow vent screw is removed from the gearbox.
3. Check the operation of the system in manual mode. The direction of movement must match the
indication on the control panel;
Caution!
Operate the drive in manual mode at first; not in
automatic mode.
Limit switch functionality description
•The spindle [C] of the limit switch
mechanism is driven by a worm gear
from the secondary shaft of the gearbox.
•The limit switch [A] has two switch nuts
[D] which move along the spindle [C] in
direction I or II, depending on the
direction of rotation of the motor
gearbox. Direction markings on the limit
switch correspond with the rotation
markings on the gearbox housing.
•The two switch nuts [D] of the
mechanism which will actuate the
working switch and emergency switch:
either working switch [I1] and
emergency switch [I2] for direction I, or
working switch [II1] and emergency
switch [II2] for direction II.
•The emergency switch [I2] or [II2] is an
auxiliary device and is only actuated
when the working switch [I1] or [II1]
does not stop the motor gearbox in time.
The electrical connection diagram can be
found on the inside of the plastic
protection cover [B] and in section 4 of
this manual.
•The locking lever [E] prevents the switch nuts [D] from rotating when the spindle [C] is driven by the
gearbox.
•To ensure proper functioning of the limit switch mechanism, the protection cover has to be mounted
and screwed in place with two screws.

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GWM Installation manual
Adjustment procedure
1. Make sure the gearbox, electric motor and limit switch are properly mounted and connected;
2. Remove the protective cover [B] to reveal the limit switch [A];
3. Rotate the gearbox and determine which direction [I] or [II] points to the start position of the system;
4. Rotate the gearbox to the start position and stop at the desired position;
Caution!
When driving the gearbox with a 22 mm hex socket,
keep the speed below 800 rpm to avoid damage to the
hex nut on the input shaft of the gearbox.
5. The locking lever [E] should be slightly lifted to set the limit switch; this allows the switch nut [D] to
rotate. Rotate the switch nut [D] which is closest to the end of the spindle [C] of the direction of choice
(direction [I] of [II]) until you hear a click;
Caution!
Avoid lifting the locking lever [E] too far, as the locking
lever might not fully return and prevent the switch nuts
from rotating with the switch shaft.
6. Lower the locking lever [E] and let it settle on one of the grooves of the switch nut;
7. Rotate the gearbox until the output shaft has made half a revolution in the opposite direction;
8. Rotate the gearbox towards the desired position and verify the settings of the limit switch;
9. If necessary it is possible to fine tune the setting of the limit switch by rotating the switch nut one
groove in either direction;
“CLICK”

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10. Repeat step 7 to 9 to fine tune the limit switch setting if necessary;
11. Rotate the gearbox to the end position and stop at the desired position;
12. Repeat steps 5 to 10 to set the limit switch for the end position. The limit switch is now properly set
for operation;
13. Mount the protective cover [B] on the gearbox and tighten the two screws;
Attention!
Do not store loose parts or documents under the
protective cover. This could damage and influence the
functionality of the limit switch.
14. Verify the limit switch settings by operating the electric motor;
15. Keep this manual with adjustment instructions in a suitable place.
6. Inspection and maintenance
Inspection and maintenance tasks may only be carried out by qualified staff, see section 0.
Maintenance intervals
Every 6 months
•Check for increased noise level;
•Lubricate chain couplings (oil viscosity 80 cST to 120 cST at 20°C).
Every year
•Check and re-tighten mounting bolts;
•Check couplings for wear and corrosion;
•Check the wiring of the motor and the limit and emergency switch mechanism;
•Check worm gear wear and shaft play.
Risk of injury or death due to electrical or mechanical forces!
Before starting to work on the gearbox or related parts,
always switch the power off at the master switch or
operating switch and lock it out with a padlock to
prevent switching on again.

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GWM Installation manual
Maintenance tasks
The gearbox has lifetime lubrication. Changing the gear oil is usually unnecessary.
Caution!
For the following tasks it must be ensured that the load
cannot start moving by itself after it is disconnected
from the drive.
Checking worm gear wear and shaft play
1. Set the system in a certain position in which the driveshaft and gearbox is not mechanically loaded, for
example with the vent closed;
2. Switch of the power;
3. Disconnect the gearbox from the drive train, so the output shaft should be able to turn freely;
4. Check the play in the gear unit by turning the output shaft of the drive.
If there is clearly noticeable play, the drive should be dismounted and return to the manufacturer for
inspection.
Spare parts and parts replacement
Parts may only be replaced by qualified staff. Always use original spare parts and original lubricants. For
product safety reasons, De Gier only supplies gearboxes and limit switches as replacement parts. Gear unit
parts may only be replaced or repaired by an authorised service representative of De Gier.
7. Warranty
We only accept liability for original spare parts supplied by us. The warranty terms and conditions are the same
as the standard “Metaalunie” conditions. These conditions are listed on the back of the quotation and invoice
forms.
An additional copy of terms and conditions can be sent to you free of charge on request. We reserve the right
to make modifications.

De Gier B.V., Westlandseweg 9, 2291 PG WATERINGEN, THE NETHERLANDS, Tel. [phone], Fax [phone].
GWM Installation manual
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8. Quick Troubleshooting
Troubleshooting may only be performed by qualified staff, see section 1. For an extensive troubleshooting
document, please contact your installer.
Risk of injury or death due to electrical or mechanical forces!
Before starting to work on the gearbox or related parts,
always switch the power off at the master switch or
operating switch and lock it out with a padlock to
prevent switching on again.
In case of a power outage
•Disconnect power to prevent unintentional operation of the gearbox during work activities;
•In emergency situations the gearbox can be turned to the desired position by removing the electric motor
and using a 22 mm hex socket to drive the input shaft of the gearbox using an electric drill or hand crank.
Caution!
When driving the gearbox with a 22 mm hex socket,
keep the speed below 800 rpm to avoid damage to the
hex nut on the input shaft of the gearbox.
Fault: drive does not run
•Check the motor protection switch and its settings. If the fault occurs again, there may be an overload;
•Check whether the emergency switch of the motor gearbox is actuated;
•Check the wiring, including the limit switch wiring;
Fault: travel past end position
•Check whether the locking lever is preventing the switch nuts from rotating;
•Re-adjust the limit switches if necessary, see section 5.
•Check the operation of limit switches [I1] and [II1] and emergency switches [I2] and [II2]. The switches must
be wired and monitored as normally closed (NC) contacts;
•Check the operation of the relay and replace it if necessary.
Fault: oil leak
•Check whether the vent plug is removed and if the mounting orientation of the gearbox is correct, see
section 4;
•Contact the installer when the cause of oil leakage is not related to installation error.
Fault: humming noise from motor
•Check the voltages on all three phases, which should all be the same and correspond to the value on the
motor rating plate;
•Check that all nuts on the terminal block are properly tightened;
•Contact the installer if the fault persists.

De Gier B.V., Westlandseweg 9, 2291 PG WATERINGEN, THE NETHERLANDS, Tel. [phone], Fax [phone].
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GWM Installation manual
9. Wiring diagram 400V 3~ supply