Emergency Manual Operation; Brake Adjustment - Chamberlain GH Owner's Manual

7. Install Hand Chain
Place hand chain around hand chain wheel. Be
sure to pass it through both openings in the chain
guide. Remove enough links so chain hangs
approximately two feet above the floor
This operator has provisions for manually operating the door in case of emergency or power failure. Refer to the
appropriate instructions below for your model operator.
Model GH
These operators are equipped with a manual hoist. An
electrical interlock will disable the electrical controls
when the hoist is used.
To operate the hoist:
1. Pull the disconnect chain (small chain) to engage
the hoist mechanism. The disconnect chain may be
locked in position by slipping the end through the
keyhole of the chain keeper mounted on the wall.
2. Operate the door in the desired direction by pulling
on one side or the other of the continuous loop hoist
chain (large chain).
3. The disconnect chain must be released from the
chain keeper before the door will operate again
electrically.
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
Friction Pads

EMERGENCY MANUAL OPERATION

BRAKE ADJUSTMENT

8. Mount Chain Keeper / Keyhole Bracket
Using suitable hardware mount the chain keeper
approximately 4 feet above the floor, near the free
hanging chain. Remove disconnect sash chain
from bag and place the end through the keyhole
in the the chain keeper. Remove excess links if
necessary.
TURN OFF POWER TO THE OPERATOR BEFORE
MANUALLY OPERATING YOUR DOOR.
Chain Keeper
(with pad locking provisions)
Electrical Interlock with Hoist for Models H and HJ
Plate Assembly
Release Lever
Solenoid
Actuator Plate
5
WARNING
CAUTION CAUTION
W