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Installation, Commissioning and Maintenance Manual
16.0 Periodic Maintenance
PM-LP-006b
Page: 2/10
Component:
Single-acting actuator
Task:
LP type 1 and type 2 pneumatic cylinder seals replacement
Equipment, Tools, Materials:
Spare seals
Wrench
Lifting tools
Project documentation
Warnings:
Preliminary Operations:
9. Fully unscrew stop bolt (3)
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.
3
INSTRUCTION VALID FOR SPRING DOWN ONLY
10. Unscrew blind nuts (16) and nuts (6)
11. Remove end flange (7) with O-ring (8)
12. Remove cylinder tube (9) using suitable lifting tools
If as soon as you start unfastening nuts (6) the end flange (7)
suffers a load upwards along with nuts (6), stop and fasten back
the nuts (6). Contact Rotork Service Department.
16
6
8
9
7
A4
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A4
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Summary of Contents for LP/S Series
Page 89: ...Keeping the World Flowing 89...
