GEM 1435 ePos - Connection Diagram for Quarter Turn Actuators; Connection Diagram for NC;NO Valves (Normally Closed;Normally Open); Connection Diagram for Double Acting Valves; Note for Vertical Pneumatic Connections

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13.2 Connection diagram for quarter turn actuators
13.2.1 Connection diagram for NC/NO valves (Normally
Closed/Normally Open)
NOTICE
▶ The control function can be adjusted via the butterfly disc
or by turning the shaft.
2
4
2
4
Fit tubing from 2 to connector 2 of the quarter turn actuator.
13.2.2 Connection diagram for double acting valves
2
4
2
4
Fit tubing from 2 to connector 2 of the quarter turn actuator
and 4 to connector 4 of the quarter turn actuator.
13.2.3 Note for vertical pneumatic connections
In the case of a vertical connection, please observe the follow-
ing pneumatic connection assignment:
Connector 4
Connector 2
13.3 Replacing the filter strainers
1. Switch off the pneumatic control air supply.
2. Remove the connection cables.
3. Carefully remove the filter strainers from holes 1, 2 and 3
(only double acting version).
4. Assemble the new filter strainers (1435 SFI).
5. Re-connect the connection cables.
6. Supply pneumatic control air.
14 Commissioning
NOTICE
● For delivery of the product assembled on a valve at the
factory, the complete construction is already ready for op-
eration at a control pressure of 5.5 to 6 bar without oper-
ating pressure. A reinitialization is recommended if the
plant is operated with a different control pressure or if the
mechanical end positions have been changed (e.g. seal
replacement on the valve or actuator replacement). The
initialization is retained even in the event of voltage
cutoff.
WARNING
Corrosive chemicals!
▶ Risk of caustic burns
● Wear appropriate protective gear.
● Completely drain the plant.
CAUTION
Leakage
▶ Emission of dangerous materials.
● Provide precautionary measures against exceeding the
maximum permitted pressures caused by pressure
surges (water hammer).
CAUTION
Cleaning agent
▶ Damage to the GEMÜ product.
● The plant operator is responsible for selecting the clean-
ing material and performing the procedure.
1. Commission the product.
2. Use suitable connectors.
3. Connect the control medium lines tension-free and
without any bends or knots.
14 Commissioning