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12 Inspection/servicing
WARNING
The equipment is subject to pressure!
▶ Risk of severe injury or death.
● Depressurize the plant.
● Completely drain the plant.
CAUTION
Hot plant components!
▶ Risk of burns!
● Only work on plant that has cooled
down.
NOTICE
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 examination of the
GEMÜ products depending on the operating conditions and
the potential danger in order to prevent leakage and damage.
The product also must be disassembled and checked for
wear in the corresponding intervals.
1. Have servicing and maintenance work performed by
trained personnel.
2. Wear appropriate protective gear as specified in plant op-
erator's guidelines.
3. Shut off plant or plant component.
4. Secure plant or plant component against recommission-
ing.
5. Depressurize the plant or plant component.
6. Actuate GEMÜ products which are always in the same
position four times a year.
12.1 Replacing the actuator
12.1.1 Removing the actuator
WARNING
The equipment is subject to pressure!
▶ Risk of severe injury or death.
● Depressurize the plant.
● Completely drain the plant.
CAUTION
Hot plant components!
▶ Risk of burns!
● Only work on plant that has cooled
down.
WARNING
Corrosive chemicals
▶ Risk of caustic burns
● Wear suitable protective gear.
● Completely drain the plant.
CAUTION
Use of incorrect spare parts!
▶ Damage to the GEMÜ product.
▶ Manufacturer liability and guarantee will be void.
● Use only genuine parts from GEMÜ.
1. Depressurize the air in the actuator.
2. Undo the grub screw in the opening protection.
3. Undo and remove the hex screw by turning it anticlock-
wise with a WAF19 wrench.
CAUTION
Risk of cartridge falling out
▶ This will damage the cartridge.
● Take care removing the cover, because the cartridge can
come loose in the cover.
4. Remove the cover.
5. Carefully remove the actuator from the valve body.
NOTICE
Important:
▶ After removal, clean all parts of contamination. Take care
not to damage the parts in the process. Afterwards,
check parts for potential damage. If parts are damaged,
replace.
12 Inspection/servicing