Keeping the World Flowing
61
16.0 Periodic Maintenance
PM-LP-008a
Page: 1/8
Component:
Single-acting actuator
Task:
Manual Handwheel
MH and MHD seals replacement
LP/SD and LP/SU actuator,
cylinder up to size 235
Equipment, Tools, Materials:
Spare seals
Wrench
Lifting clump
Lifting tools
Project documentation
Warnings:
Description:
Note: the following instructions apply to single-acting actuator unless otherwise specified.
Cut-off power supply and electric power supply (if present) before performing any operation.
Adequate lifting devices and suitable for the weight must be applied by skilled personnel.
Preliminary actions
1. Remove actuator from valve and remove all couplings as well (see Removal from Valve, page 11)
2. Position the actuator on a workbench (if possible) or in a stable position and in a clean and closed area
3. Remove any control equipment (if present). Refer to the project specific documentation
4. Remove pneumatic pipes
5. Remove screw (1) and seal (2)
MH HANDWHEEL
1
2
MHD HANDWHEEL
1
2
6. Remove cap (3), O-ring (4) and
handwheel (5)
MH HANDWHEEL
3
4
5
MHD HANDWHEEL
3
4
5
A4
US
US
A4
US
A4
A4
US
Summary of Contents for LP/S Series
Page 89: ...Keeping the World Flowing 89...
