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Installation, Operation and Maintenance Manual
VCIOM-15792-EN Rev. 0
October 2020
Section 3: Operation and Use
Operation and Use
For Bettis GVO LP DA actuator models with Manual Handpump, the operating time is
adjustable through two regulation valves placed on manual handpump body (see Section 7.2,
Table 11, 12 and 13: sectional drawing for hydraulic control unit MHP).
To carry out the adjustment, use a suitable Allen wrench and follow these steps (Figure 18):
•
Remove the cap nut.
•
Loosen the lock nut.
•
Screw with a screwdriver the setting screw to increase the operation time.
•
Unscrew with a screwdriver the setting screw to decrease the operation time.
•
After the adjustment is over screw the lock nut and put back in place the cap nut.
Cap nut
Setting screw
Lock nut
Figure 18
Flow regulators placed on Manual Handpump
