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13 Manual override
The combi switchbox has a manual override which enables
the process valve to be actuated manually while de-energized.
3
1
Activating the manual override:
1. Press in the manual override 3 using a flathead screw-
driver (maximum slot width of 4 mm) as far as it will go
and turn it 90° clockwise.
ð The groove is horizontal.
Deactivating the manual override:
2. Turn the manual override 3 90° anticlockwise using a flat-
head screwdriver (maximum slot width of 4 mm) and re-
lease it.
ð The groove is vertical.
▶ Control air and the minimum pressure must be available
to use the manual override.
14 Troubleshooting
Error
Error cause
No stroke
No mounting kit
available
Process valve
faulty
Wrong mounting kit
installed
No feedback
Incorrect assembly Check assembly,
Switch not set
Wrong mounting kit
installed
Voltage is not con-
nected
Cover cannot be at-
Sealing ring inser-
tached
ted incorrectly
Sealing ring dam-
aged
Cables protruding
over the edge of the
base
www.gemu-group.com
2
NOTICE
Troubleshooting
Check mounting kit
Replace process
valve
Replace mounting
kit
wiring and connec-
tion
Set switch
Replace mounting
kit
Connect voltage
Insert sealing ring
correctly
Replace sealing
ring
Check the cable
routing and shorten
the cables if neces-
sary
15 Inspection and maintenance
Exceptional maintenance work!
▶ Damage to the GEMÜ product
Any maintenance work and repairs not described in these
●
operating instructions must not be performed without
consulting the manufacturer first.
The operator must carry out regular visual examinations of
the products, depending on the operating conditions and the
potentially hazardous situations, in order to prevent leakage
and damage.
1. Have servicing and maintenance work performed by
trained personnel.
2. Wear appropriate protective gear as specified in the plant
operator's guidelines.
3. Shut off plant or plant component.
4. Secure the plant or plant component against recommis-
sioning.
5. Depressurize the plant or plant component.
6. Actuate products which are always in the same position
four times a year.
7. Carry out inspection and maintenance for products in the
potentially explosive area to DIN EN 60079-17.
15.1 Spare parts
No spare parts are available for this product. If it is faulty,
please return it to GEMÜ for repair.
15.2 Cleaning the product
- Do not clean the product with a high pressure cleaning
device.
16 Disassembly
1. Disassemble in reverse order to assembly.
2. Unscrew the electrical wiring.
3. Disassemble the product. Observe warning notes and
safety information.
17 Disposal
1. Pay attention to adhered residual material and gas diffu-
sion from penetrated media.
2. Dispose of all parts in accordance with the disposal regu-
lations/environmental protection laws.
3. Dispose of electronic components separately.
18 Returns
Legal regulations for the protection of the environment and
personnel require that the completed and signed return deliv-
ery note is included with the dispatch documents. Returned
goods can be processed only when this note is completed. If
17 / 23
NOTICE
GEMÜ 4240
18 Returns
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