168
G20492-IG-Subject to change. © Belimo Aircontrols (USA), Inc.
Preliminary steps
1. Belimo actuators should be mounted indoors in dry, relatively clean environment free from corrosive fumes. If the actuator is to
be mounted outdoors, a protective enclosure must be used to shield the actuator. (See Belimo Mechanical Accessories section)
2. For new construction work, order dampers with extended shafts. Instruct the installing contractor to allow space for mounting and
service of the Belimo actuator on the shaft.
3. The LM Series actuator requires a minimum shaft length of 1.5”.
Use the ZG-LMSA for short shaft installations on 1/2” diameter shafts.
Installation Instructions
Quick-mount visual instructions
1. Turn damper blade to its fully closed position.
2. With manual override button depressed, rotate actuator
clamp to about 1/16” - 1/8” between actuator stop and
clamp, depending on damper seal design. Slide actuator
over shaft and finger-tighten nuts.
3. Slide anti-rotation bracket up under actuator engaging cen-
ter cut-out on actuator back. Secure bracket with self-tap-
ping screws. Tighten the two nuts on the universal clamp with
8 mm wrench, 3-5 ft-lb torque. (On dampers with edge seals,
actuator will compress damper blades when reaching end posi-
tion for air-tight damper.)
4. Adjust end stops, if required.
1
2 3
4
L-bracket
L-bracket
m
in. 1.5
” [38]
Dimensions (All numbers in brackets are in millimeters.)
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