LiftMaster GH GH LOGIC VERSION 1 Manual - Page 5

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 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. EMERGENCY MANUAL OPERATION 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. CAUTION 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 BRAKE ADJUSTMENT 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 Plate Assembly Release Lever Friction Pads Solenoid ACTUATOR PLATE 5