
POWERS™ Controls No. 3 Pneumatic Damper Actuator Technical Instructions
Document Number 155-146P25
September 18, 2008
Siemens Building Technologies, Inc. Page 5
Installation, Continued
Table 3. Damper Blade Rotation.
Actuator Position in
Relation
to Damper
Shaft
Crank Position in
Relation to Damper
Shaft
Rotation of Damper
Blade on Increase of
Pressure
Above Clockwise Left
Below Counterclockwise
Above Counterclockwise Right
Below Clockwise
Figure 1. Mounting Plate and Extended Shaft Mounting.
Item Description Item Description
1 Nut(s) 6 Clevis
2 Lock Washers (2) 7 Hitch Pin
3 E-ring 8 Clevis Pin
4 Pivot Post 9 Crank Assembly Kit No. 331-941
5 Nut 10 Actuator Mounting Plate
Figure 2. Extended Shaft Mounting with Pivot.
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