Manual Override - Siemens OpenAir GCA Series Technical Instructions

OpenAir GCA Series Spring Return 142 lb-in Electronic Damper Actuator

Manual override

Mechanical
Range
Adjustment
Siemens Building Technologies, Inc.
90˚
x 7-3/4 = 90˚
Rotating
Always turn the key in the direction of the arrow.
CAUTION:
When engaging the gear train lock pin, be careful to turn only about five
degrees until you hear a click or meet slight resistance. Turning too far will
strip the lock pin.
To release manual override, either restore power and send a control signal; or when
power is absent, insert the 3 mm hex key in the override opening, turn the key in the
direction of the arrow and remove the key.
The angular rotation is adjustable between 0 and 90° at five-degree intervals. To limit the
range of shaft movement, remove the locking clip and self-adjusting shaft adapter.
Rotate the damper blade shaft to its failed position. Rotate the shaft coupling to the
desired position. Insert the shaft adapter into the actuator and fasten it with the locking
clip. See Figure 20.
1
MANUAL
OVERRIDE
Figure 20. Mechanical Range Adjustment.
2
HOLD
1
h
3 mm
Locking in place
Figure 19. Manual Override.
2
3
Document No. 155-173P25
3
6
5
4
Releasing
when power is absent
5
MANUAL
OVERRIDE
Technical Instructions
March 17, 2006
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8
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