Belimo FSNF120 Series Manuale di sostituzione - Pagina 13
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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.
Figure 1
Allow any non-concentric shaft
motion to be taken up by
mounting stud in middle of U-slot
Safe-Air Honeywell ML & MS Motors with Belimo FSNF120 Series
Distance at top must be
the same as at bottom
This is acceptable as long
as mechanically solid.
Figure 3
Note how the pin of the anti-
rotation strap is mounted in middle
of actuator U-slot.
Figure 2
As long as it is mechanically
solid, the anti-rotation strap
may be bent to fit height.
-
March 2018
Actuator must be
perpendicular to the
damper shaft.
Actuator should be
parallel to the plane of
the damper frame and
sleeve.
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