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EB 8314 EN
Decommissioning and disassembly
9 Decommissioning and
disassembly
Risk of bursting in the actuator.
Actuators are pressurized. Improper opening
can lead to actuator components bursting.
Before starting any work on the actuator, de
-
pressurize all plant sections concerned and
the actuator.
9.1 Decommissioning
To decommission the actuator for service and
repair work or disassembly, proceed as fol-
lows:
1. Put the control valve out of operation.
See associated valve documentation.
2. Disconnect the pneumatic air supply to
depressurize the actuator.
9.2 Removing the actuator
from the valve
1. Put the control valve out of operation.
See associated valve documentation.
2. Remove external piping.
3. Remove the stem connector clamps
(A26/27).
4. Unscrew the stem connector nut (9) and
lock nut (10) from the valve.
5. Unscrew the ring nut (A8) on the valve
bonnet (2).
6. Remove the ring nut (A8) and actuator
from the valve.
7. Fasten the lock nut (10) and stem con-
nector nut (9) on the valve.
9.3 Disposal
Î
Observe local, national, and internation-
al refuse regulations.
Î
Do not dispose of components, lubri-
cants, and hazardous substances togeth-
er with your other household waste.
DANGER
!
