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5.5.2 Setting mechanical stops
The actuator is factory-set for a
90°travel.
Mechanical stops (1: counter-
clockwise – 2: clockwise)
mechanically block rotation to
protect the valve in case of over-
travel in case of handwheel
operation. They are factory-set.
They can be set on the actuator or
on the gearbox if a gearbox is
fitted on the actuator.
These screws are located on the lower part of the actuator.
How to adjust mechanical stops for both directions
Clockwise mechanical stop setting
1. Untighten the nut corresponding to clockwise mechanical stop
and turn the mechanical stop 2 turns back.
2. Drive the actuator to clockwise travel limit position.
3. Get the clockwise mechanical stop in contact with output
sleeve then turn it back of 1 turn.
4. Retighten nut to keep mechanical stop in position.
Counter-clockwise mechanical stop settings
5. Untighten the nut corresponding to counter-clockwise
mechanical stop and turn the mechanical stop 2 turns back.
6. Drive the actuator to the counter-clockwise travel limit
position.
7. Redo settings steps 3 & 4 for counter-clockwise direction.
Perform complete electrical valve opening and closing operations.
The motor must stop on the positions set in the software and not on
the mechanical stops.