LiftMaster MJ MJ5011E Installation-2008 Manual - Page 21

M A N U A L D I S C O N N E C T WARNING 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 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 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. 3. The disconnect chain must be released from the chain keeper before the door will operate again electrically. CAUTION 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 emergeny disconnect unless doorway is clear of persons and obstructions. Chain Keeper AVERTISSEMENT (with pad locking provisions) ATTENTION MODEL MJ This operator has a floor level disconnect chain to disconnect the door from the door operator. 1. To disengage, pull the chain and secure in the disengaged position by slipping the end through the keyhole bracket mounted on the wall. Or if emergency egress device is used, pull handle to disengage operator from door. 2. The door may now be pushed up or pulled down manually. 3. Release the disconnect chain or reset the emergeny egress device to operate the door again electrically. MODEL MHS This operator includes both a floor level disconnect chain to disconnect the door from the door operator and a disconnect chain with manual hoist to electrically disable the operator controls. 1. Refer to Model MH instructions for hoist operation. 2. Refer to Model MJ instructions for manual operation. When operator is disconnected by the manual operation chain, hoist and electrical operation will not function. Electrical Interlock with Hoist for Models MH and MHS Keyhole Bracket ADVERTENCIA PRECAUCIÓN Manual Disconnect for Models MJ 21