32
Installation, Commissioning and Maintenance Manual
PM-LP-006a
Page: 2/10
Component:
Single-acting actuator
Task:
LP type 0 pneumatic cylinder seals replacement
Equipment, Tools, Materials:
Spare seals
Wrench
Lifting tools
Project documentation
Warnings:
Preliminary Operations:
7. Remove O-ring (2)
8. Fully unscrew stop bolt (1)
If the stop bolt is hard to unscrew, pressurise the cylinder and unscrew
stop bolt by 3-4 turns.
Depressurize the cylinder; check if the stop bolt turns freely. If necessary,
repeat the operation.
Do not unscrew the stop bolt completely while the cylinder
is pressurized.
1
2
3
INSTRUCTION VALID FOR SPRING DOWN ONLY
9. Unscrew blind nuts (4) and nuts (5)
10. Remove end flange (6) with O-ring (7)
11. Remove cylinder tube (8) using suitable lifting tools
If, during the nuts (4) unfastening the end flange (6) suffers a
continuous load upwards along with nuts (4), stop and fasten
back the nuts (4). Contact Rotork Service Department.
At the beginning of the nuts (4) unfastening the flange (6) will be
pushed upwards by the pre-compressed spring load. If the upwards load
continues till the nuts (4) are almost fully unfastened, stop and fasten
them back. Contact Rotork Service Department.
4
5
7
8
6
16.0 Periodic Maintenance
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Summary of Contents for LP/S Series
Page 89: ...Keeping the World Flowing 89...
