Install Instructions
4 Actuator Literature—D-3153 with Auxiliary Mounting Bracket Installation Bulletin
90°
Rotation
15°
1/2 inch
2-1/16
inch
2-1/8
(
54
)
Radius
Figure 6: Normally Open Location
For normally open operation, form an angle of 15°.
3. Choose the auxiliary bracket mounting position
(usually on the existing or on the adjacent duct or
wall).
Note: Whenever possible, locate the auxiliary
mounting bracket in a level position where
alignment can be readily maintained.
4. The pivot post location should be within
10 to 16-1/2 inches (254 to 419 mm) (Figure 2)
from the blade arm linkage point to use the
telescoping piston rod feature of the D-3153.
Make sure that the damper blades will clear the
actuator when rotated.
5. Mark the four mounting holes using the auxiliary
bracket as a template and swing the actuator and
mounting bracket aside.
6. Make sure that the mounting surface is solid and
stable (that it can retain thread-forming screws).
7. Drill a 3/16 inch (5 mm) hole at each of the marked
places and mount the auxiliary bracket using
four No. 12 x 1/2 inch pan-head, thread-forming
screws supplied.
Note: For heavier gauge mounting surfaces, 1/4 inch
diameter bolts can be substituted for the
bracket attachment.
8. If the extension of the piston rod is required,
loosen the set screw located on the shaft
extension hex nut.
9. Telescope the piston rod to allow attachment of the
swivel ball joint to the blade bracket.
10. Tighten the crank arm, swivel ball joint, and piston
rod set screws before making the air line
connections.
C
heck Out Procedures
1. Supply air pressure to the actuator and operate
the damper for at least three complete cycles.
2. Verify that the damper blades open or close fully.
3. Run the actuator to close the damper. If the
blades are not fully closed, adjust the position of
the linkage rod.
4. Run the actuator to open the damper. The blades
should not rotate more than 90° or past full open.
Adjust the crank arm or blade arm radius by
repositioning the ball joint if necessary.
5. Repeat procedures as necessary.
Controls Group FAN 268.1
507 E. Michigan Street Damper and Actuator Manual
P.O. Box 423 Printed in U.S.A.
Milwaukee, WI 53201