Installation Instructions

Document No. 129-417
Installation Instructions
April 1, 2020
Page 4 of 8 Siemens Industry, Inc.
Manual Override
To move the damper blades without power present, do the
following:
1. Hold down the PUSH button.
2. Make adjustments to the damper position.
3. Release the PUSH button.
NOTE: If there is no load, the actuator will hold the new
damper position. If load conditions exist, the
actuator might not be able to hold.
Once power is restored, the actuator returns to automated
control.
Figure 11. Manual Override for Long and Short
Damper Shafts.
Mechanical Range Adjustment
The angular rotation is adjustable between 0° and 90° at
5-degree intervals.
1. Loosen the shaft adapter from the damper shaft and
remove the actuator from the damper shaft.
2. Remove the clip and shaft adapter from the actuator.
See Figure 12.
Figure 12.
3. Return the actuator gear train to the "0" position using
the steps which follow for the clockwise or
counterclockwise damper shaft rotation.
Clockwise-to-open:
a. Insert the shaft adapter to the right as close as
possible to the raised stop. Figure 13.
Figure 13.
b. Hold down the PUSH button and rotate the shaft
adapter to the left until it stops. Figure 14.
Figure 14.
c. Release the PUSH button.
d. If the shaft adapter is not resting against the left
raised stop, remove the adapter and insert it against
the left stop.
e. Place the position indicator to the "0" position on the
outside scale. Figure 15.
Counterclockwise-to-open:
a. Insert the shaft adapter to the left as close as possible
to the raised stop.
b. Hold down the PUSH button and rotate the shaft
adapter to the right until it stops.
c. Release the PUSH button.
d. If the shaft adapter is not resting against the right
raised stop, remove the adapter and insert it against
the right stop.
e. Place the position indicator to “0” on the inside scale.
Figure 15.
4. Determine the angle of rotation for the damper blade
shaft. Subtract that amount from 90°.
5. Remove the shaft adapter and insert it with the
position indicator pointing to mark on the scale
calculated in the previous step. Figure 16.