Manual Override - Siemens OpenAir GBB161.1U Technical Instructions

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Mounting and
Installation, continued
Tandem Applications

Manual override

Mechanical Range
Adjustment
Siemens Industry, Inc.
•
The direction of rotation switches must be set identically on both actuators
according to the clockwise or counterclockwise rotation of the damper shaft.
The factory setting is clockwise. See Figure 14 for location on the actuators.
•
The tandem actuator pair is intended for use on the same mechanical load.
•
Minimum damper drive shaft length is 4-inches (100 mm).
CAUTION:
No more than three actuators are to be used in tandem applications.
To move the damper blades when
power is not present:
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.
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.
Figure 23.
Figure 21. Manual Override.
Figure 24.
Technical Instructions
Document Number 155-176P25
June 22, 2015
Figure 22.
Figure 25.
Page 11