Installation, Operation and Maintenance Manual
MAN-02-01-39-0704-EN Rev. 0
July 2019
Manual HandPump Hydraulic Override
Section 4:
Manual HandPump
Hydraulic Override
See Figure 4.
A.
Maintain fluid level to fill line using ISO-22 hydraulic fluid. Use Chevron "Hydraulic
Oil AW" or equal.
B.
The selector control valve is set in center position for remote operation. Select left
or right positions for manual open or manual close as shown on pump label.
C.
Store and lock handle to keep pump plunger closed. Do not remotely operate
actuator with handle on plunger.
4.1
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 inch 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.
4.2
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.
NOTE
Handpump must not be located more than 33' lower than the actuator.
9
Section 4: Manual HandPump Hydraulic Override
Summary of Contents for Bettis M Series
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