Sec-2.10
Section 2: Operator Installation
Clutch Adjustment
The GCL-MT operators have a friction-style clutch that can be adjusted.
NOTE
: The clutch is intended to provide protection for the door,
the operator and associated equipment. It is not intended for
entrapment protection. Therefore, the adjustment of the clutch
should be such that the door and operator function in this manner.
To Adjust the Clutch:
1. Decrease the tension on the clutch until the operator will
not lift the door. Turn the adjusting castle nut counter-
clockwise to decrease clutch tension and clockwise to
increase clutch tension.
2. After completing step 1, begin to increase tension on
the clutch until the operator is capable of lifting the door
through the complete cycle without clutch slippage.
3. Finally, insert the cotter pin through the castle nut and
shaft and bend the outer leg of the cotter pin.
NOTE:
Periodically check the system for proper clutch action. If clutch starts to slip after working properly for
some time, check manual operation of door BEFORE adjusting clutch. The door may not be operating freely or
the counterbalance spring may need adjusting. Repairs and adjustments must be performed by a trained service
representative using proper tools and instructions.
CLUTCH PAD
CLUTCH PLATE
CLUTCH PULLEY
WASHER
COTTER PIN
ADJUSTING NUT
SPRING
FIG. 13
