ote that actuator floats freely. Clamp cold welds when teeth dig into the damper shaft and the anti-
rotation strap stud allows the actuator to move if shaft is not perfectly concentric. Rigid mounting by
jamming the stud into the U-slot of actuator is NOT usually best.
Distance at top must be
the same as at bottom
Actuator should be
parallel to the plane of
the damper frame and
sleeve.
Actuator must be
perpendicular to the
damper shaft.
Allow any non-concentric shaft
motion to be taken up by
mounting stud in middle of U-slot
Figure 1
Figure 2
Figure 3
As long as it is mechanically
solid, the anti-rotation strap
may be bent to fit height.
-
Note how the pin of the anti-
rotation strap is mounted in middle
of actuator U-slot.
This is acceptable as long
as mechanically solid.
Safe-Air Honeywell ML & MS Motors with Belimo FSNF120 Series March 2018
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