3
Mounting Installation
Reversible Clamp Quick Mount (NM, AM, GM)
®
1. Turn the damper shaft until the blades are
fully closed.
2.
①
Slip the actuator’s universal clamp over the
damper shaft. Make sure that the duct and
the controls on the cover are accessible.
Place the actuator in the desired mounting
position.
➁
Hand tighten the two nuts on the actuators
universal clamp.
3.
①
Disengage the actuator gear train by
pressing the manual override button and
rotate the clamp until centered.
➁
Slide the anti-rotation strap up under the
actuator so it engages the actuator at the
center of the cutout
. Bend the bracket as
needed to support the rear of the actuator.
Secure to ductwork with self-tapping
screws (No. 8 recommended).
4.
①
Loosen the nuts on the universal clamp.
Press the manual override button and
rotate the clamp to about 5° from the
closed position (1/16 to 1/8” between stop
and clamp).
➁
Tighten the two nuts on the universal
clamp with a 8, 10 or 12mm wrench
(see table, column D on page 2 for
required torque).
5.
①
Snap on the reflective position indicator.
➁
Adjust end-stops, if required
6. Mount actuators indoors. If mounted out-
doors, use approved protective enclosure.
The damper is now fully closed but the actuator
is 5° from fully closed. This is called “pre-load-
ing” the actuator. When the actuator is powered
and sent to the closed position: it will put its full
torque on the shaft compressing the edge and
blade seals. This ensures that the damper will
meet its leakage rating. The actuator is elec-
tronically protected from overload and will not be
damaged.
Testing the installation without power
1.
Disengage the gear train with the manual
override button and move the shaft from
closed to open to closed. Ensure that there
is no binding and that the damper goes fully
open and closes with 5° of actuator stroke
left.
2.
Correct any problems and retest.
Standard Mounting
Center the
anti-rotational
bracket in the
slot.
