BRAKE ADJUSTMENT
A solenoid brake is standard on 3/4 and 1 horsepower models, and is optional on 1/3 and 1/2 horsepower mod-
els. 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.
Friction Pads
Release Lever
Plate Assembly
Solenoid
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 ooperator is
used.
Cotterpin
Adjusting Nut
Spring
Clutch Pulley
Clutch Plate
Clutch Pad
Washer
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