Product Overview

Technical Instructions OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electronic Damper Actuators
Document Number 155-315P25
January 26, 2011
Page 10 Siemens Industry, Inc.
Manual Override
1
2
3
5
6
7
8
4
HOLD
90º
3 mm
h
x 7-3/4 = 90º
EA0882R2
Rotating Locking in place Releasing when power is
absent
Figure 9. Manual Override.
NOTE: Always turn the key in the direction of the arrow.
CAUTION:
When engaging the gear train lock pin, carefully turn only
about 5 degrees until you meet slight resistance. Turning too
far will strip the lock pin.
To Release Manual
Override
Do one of the following:
• Restore power and send a control signal.
• When power is absent, do the following:
1. Insert the 3 mm hex key in the override opening.
2. Turn the key in the direction of the arrow.
3. Remove the key.
Mechanical Range
Adjustment
The angular rotation is adjustable between 0° and 90° at 5-degree intervals.
To limit the range of shaft movement:
1. Remove the locking clip and self-adjusting shaft adapter.
2. Rotate the damper blade shaft to its failed position.
3. Rotate the shaft coupling to the desired position.
4. Insert the shaft adapter into the actuator and fasten it with the locking clip. See
Figure 10.
EA0278R2
MANUAL
OVERRIDE
1
3
2
Figure 10. Mechanical Range Adjustment.