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Installation, Operation and Maintenance Manual
MAN-03-04-103-0738-EN Rev. 1
5.1
Hydraulic Fluid Level
The fluid level in the handpump reservoir changes when the actuator is operated. The
fluid level is high when the hydraulic cylinder piston rod is retracted into the hydraulic
cylinder. The fluid level is low when the hydraulic cylinder piston rod is extended out
of the hydraulic cylinder. Measure the fluid level in the low position, using a dip stick,
and maintain this level as shown on the sticker (1 in. [25.4 mm] above the pump base).
Operate the actuator open and closed and view the fluid level to verify where the low
position is. Be sure to tighten the fill port plug securely.
CAUTION
!
Do not exceed this fluid level or fluid may squirt out of the relief valve.
5.2
Remote Mounting the Handpump
The handpump is normally installed on the actuator with the fill port on top. When
installed on a valve in a pipeline, the fill port must remain on top regardless of the angle
of the valve in the pipeline. This may require the handpump to be reinstalled in the field.
The handpump can be remote mounted on an adjacent structure. The optimum position
is close to and above the actuator. If the handpump is located below the actuator, both
speed control valves must be completely closed before removing the reservoir fill plug
to check the fluid level. This will prevent hydraulic fluid from draining out of the actuator.
Reset both speed controls after the fill plug is reinstalled.
Manual Handpump Hydraulic Override
Section 5: Manual Handpump Hydraulic Override
May 2020
13
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