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Installation, Operation and Maintenance Manual
VCIOM-15792-EN Rev. 0
For the adjustment of the mechanical stop screwed on the end flange of manual
override (see also Section 7.2, Table 14: sectional drawing for manual jackscrew MSJ)
proceed as follows:
1.
2.
3.
4.
5.
Figure 13
Operation and Use
Loosen the lock nut (item 2).
If the actuator angular stroke is stopped before reaching the end position
(fully open or closed), unscrew the stop screw (item 1) by turning it anticlockwise,
and actuate the handwheel of manual override until the valve reaches the right
position. When unscrewing the stop screw, keep the lock nut still with a wrench so
that the sealing washer does not withdraw together with the screw.
Tighten the lock nut, after having correctly placed the threaded seal washer
(item 3 and 4).
If the actuator angular stroke is stopped beyond the end position (fully open or
closed valve), actuate the handwheel of manual override and screw the stop-screw
by turning it clockwise until the valve reaches the right position.
Tighten the lock nut, after having correctly placed the threaded seal washer
(item 3 and 4).
Mechanical stop on the end flange of manual override
3 2 1
4
Section 3: Operation and Use
October 2020
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