30
Installation, Commissioning and Maintenance Manual
PM-LP-005
Page: 1/1
Component:
Hydraulic manual override for single-acting actuator
Task:
Hydraulic oil replacement
Equipment, Tools, Materials:
Project documentation
Wrench
Warnings:
Preliminary Operations:
Description:
Tasks must be executed with the tank in vertical position and with the actuator in fail position.
Verify the absence of pneumatic pressure.
Correct oil level is approximately 25 mm (1") below the fill/breather port.
Drain procedure
1. Make sure the actuator is in fail safe position (spring released)
2. Remove breather/plug (1.5)
3. Place containers under drain port (D1) to collect the fluid
4. Remove plugs (D1)
5. Discharge oil
6. Tighten plug (D1) back in its seat with a wrench
Used hydraulic fluid must be disposed of safely.
1
1.5
1.1
1.2
D1
Filling procedure
7. Fill with oil from the fill /breather port (1.5) up to 25 mm (1")
below the port
8. Close stop valve (1.2) and verify that stop valve (3) is open
9. Install the pump lever and operate pump (1.1) to fully compress
the spring
10. Ensure the oil level in the tank does not drop below the intake
tube
11. Slowly open stop valve (1.2) to allow the actuator the return to
the fail position
12. Repeat the pump operation procedure from 2 to 3 times
13. Pressurize and keep the cylinder pressurized from 3 to 5
minutes, to settle the oil level
14. Slowly open stop valve (1.2) to allow the actuator the return to
the fail position
15. Check the oil level. If necessary, fill in from the fill /breather port
(1.5) up to 25 mm (1") below the port
Important: Do not exceed this fluid level.
17. Reinstall the tank breather (1.5) and return the lever to the
storage holder
16.0 Periodic Maintenance
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Summary of Contents for LP/S Series
Page 89: ...Keeping the World Flowing 89...
