Product Overview

OpenAir GEB Non-Spring Return Rotary Electronic Damper Actuators Technical Instructions
Document Number 155-318P25
August 27, 2007
Siemens Building Technologies, Inc. Page 9
Mechanical Range
Adjustment
The angular rotation is adjustable between 0
and 90° at 5-degree intervals. The range of
shaft movement is limited by mounting the shaft
adapter:
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.
EA0947R1
1
2
Figure 8.
EA0948R1
90
45
90
45
EA0949R1
EA0951R1
90
45
Figure 9. Figure 10 Figure 11.
3. Return the actuator gear train to the “0” position using the steps that 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. See
Figure 9.
b. Hold down the PUSH button and rotate the shaft adapter to the left until it stops.
See Figure 10.
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.
See Figure 11.
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.
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 the mark
on the scale calculated in the previous step. See Figure 11.
6. Attach the clip.
7. Rotate the damper blade shaft to its “0” position.
8. Return the actuator to the damper shaft and tighten the shaft adapter to the damper
shaft.