LiftMaster MJ MGJ User's Guide Manual - Page 5

M A N U A L D I S C O N N E C T ( M O D E L S M T / BWMATRN& INMGH ) The operators have provisions for manually operating the door in case of emergency or power failure. Refer to the appropriate instructions for your model operator. MODEL MT/BMT Emergency Disconnect CAUTION To prevent possible SERIOUS INJURY or DEATH from a falling door or arm: • DO NOT stand under the door arm when pulling the emergency release. • If possible, use emergency release handle to disengage trolley 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 release handle unless doorway is clear of persons and obstructions. AVERTISSEMENT TO DISCONNECT DOOR FROM OPENER TO RECONNECT DOOR ARM TO TROLLEY NOTICE Emergency Emergency Disconnect Door Arm ATTEEmergNencyTION Pull emergency Disconnect release handle straight down. Emergency disconnect will Door open. Arm Lift free end of door arm to trolley. Pull emergency handle to allow arm to engage roll pin. Release handle. Emergency disconnect will close. Door Release Handle MODEL MH 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 (sash chain) to engage the hoist mechanism. The disconnect chain may be locked in position by slipping the end through the keyhole of the chain retaining bracket 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. 3. The disconnect chain must be released from the chain retaining bracket before the door will operate again electrically. Chain Retaining Bracket (with pad locking provisions) ADVERTENCIA PRECAUCIÓN Electrical Interlock with Hoist for Model MH 5