Manual operation
A 3-mm Allen wrench can be used to move the actuator to any position.
To move the actuator stem manually
1. Open the cover using a proper screwdriver.
2. Press and hold down button (a) illustrated below for at least three seconds.
– The actuator ignores any positioning signal from the controller.
3. Adjust the position of the actuator stem by rotating Allen wrench (b) illustrated below
clockwise or anti-clockwise.
– The actuator stem moves down if you rotate clockwise; it moves up if you rotate anti-
clockwise. The manually set position is retained.
4. To exit manual operation mode, press and hold down button (a) illustrated below again
for at least three seconds.
– The actuator runs a self-calibration automatically. Positioning signal sent from the
controller takes effect.
5. Close the cover.
If operating voltage is applied to actuator, press button (a) before and after manually
adjusting the position of the actuator stem. If no operating voltage and positioning
signal are applied, manual operation can be done without pressing button (a).
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