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Installation, Operation and Maintenance Manual
VCIOM-15792-EN Rev. 0
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):
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Figure 18
Operation and Use
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.
Flow regulators placed on Manual Handpump
Section 3: Operation and Use
Lock nut
Cap nut
Setting screw
October 2020
23
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