11
BRAKE ADJUSTMENT
A solenoid brake is standard on 3/4 and 1 horsepower models, and is optional on 1/3 and 1/2 horsepower models. The
brake is adjusted at the factory and should not need additional adjustment for the the life of the friction pad.
Replace friction pads when necessary. Refer to the
illustration for identification of components for the solenoid
type brake system.
Solenoid Brake System
CLUTCH ADJUSTMENT & AUXILIARY REVERSAL SYSTEM
1. Remove cotterpin from nut on the clutch shaft.
2. Back off clutch nut until there is very little tension on the
clutch spring.
3. Tighten clutch nut gradually until there is just enough
tension to permit the operator to move the door
smoothly but to allow the clutch to slip if the door is
obstructed. When the clutch is properly adjusted, it
should generally be possible to stop the door by hand
during travel.
4. Reinstall Cotterpin.
The Auxiliary Reversal System works in tandem with the
adjustable clutch to detect if a closing door meets an
obstruction. If an obstruction is met and causes the clutch
to slip, the Auxiliary Reversal System will return the door
to the full open position. The Auxiliary Reversal System is
designed to protect the door and motorized operator. It is
not intended as a replacement for a safety sensing device,
nor will it work for sectional doors when a jackshaft
operator is used.
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