LiftMaster MGJ Installation Manual - Page 24

G EMERGENCY DISCONNECWTARNING WARNING To prevent possible SERIOUS INJURY from a moving chain: • DISCONNECT electric power to the operator BEFORE manually operating your door. • If possible, use emergency disconnect ONLY when door is CLOSED. Weak or broken springs or unbalanced door could result in an open door falling rapidly and/or unexpectedly. • NEVER use emergency disconnect unless doorway is clear of persons and obstructions. 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. MENT AVERTISSEMENT MODEL MH These operators are equipped with a manual hoist. An electrical MODELS MJ AND MGJ This operator has a floor level disconnect chain to disconnect the interlock will disable the electrical controls when the hoist is used. door from the door operator. N AVERTISSEMENT 1 Pull the disconnect chain (sash chain) to engage the hoist 1 To disengage, pull the chain and secure in the disengaged mechanism. The disconnect chain may be locked in position position by slipping the end through the keyhole bracket by slipping the end through the keyhole of the chain keeper mounted on the wall. Or if emergency egress device is used, mounted on the wall. pull handle to disengage operator from door. 2 Operate the door in the desired direction by pulling on one side or the other of the continuous loop hoist chain. 3 The disconnect chain must be released from the chain keeper before the door will operate again electrically. 2 The door may now be pushed up or pulled down manually. 3 Release the disconnect chain or reset the emergency egress device to operate the door again electrically. MODEL MHS The MHS operator includes both a floor level disconnect sash chain to disconnect the door from the door operator that allows manual push up operation and an additional sash chain to engage the manual chain hoist that also electrically disables the operator controls. Keyhole Bracket CIA 1 ADVERTENCIA Refer to Model MH instructions for hoist operation. EMERGENCY DISCONNECT FOR MODELS MJ ÓN 2 Refer to Model MJ instructions for manual operation. ADVERTENCIA When the manual chain hoist sash chain is engaged, electrical operation will not function. ELECTRICAL INTERLOCK WITH HOIST FOR MODELS MH AND MHS Chain Keeper (with pad locking provisions) 24