Auto-Zone Control Systems Auto-Zone Basic Systems Installation & Operation (Version 02C) - Manual (Page 41)

Auto-Zone Basic Section 2
Installation and Wiring 2-11
Warning:
If sheet metal screws are used to mount the dampers, be certain that
they do not interfere with the movement of the damper blade.
Warning:
Never depress the actuator clutch with power applied. Unplug the ac-
tuator cable before depressing the clutch and attempting to rotate the
damper blade. Do not force the damper blade as this can damage the
gears in the damper actuator.