LiftMaster GH GT- Logic 4 Installation Manual - Page 27

WARNING EMERGENCY DISCONNECT SYSTEM MODEL H, GH, J, AND HJ 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 H AND 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 (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. 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 emergency disconnect unless doorway is clear of persons and obstructions. H and GH 3 AVERTISSEMENT ATTENTION 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. MODEL J This operator has a floor level disconnect chain to disconnect the door from the door operator. 1 To disengage, pull the disconnect chain (sash chain) and secure in the disengaged position by slipping the end through the keyhole bracket mounted on the wall. 2 The door may now be pushed up or pulled down manually. 3 Release the disconnect chain to operate the door again electrically. 2 J 3 1 1 2 ADVERTENCIA PRECAUCIÓN MANUAL RELEASE MODEL HJ This operator includes both a floor level disconnect chain (sash chain) to disconnect the door from the door operator and a disconnect chain with manual hoist to electrically disable the operator controls. 1 Pull the disconnect 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 To disengage, pull the disconnect chain and secure in the disengaged position by slipping the end through the keyhole bracket mounted on the wall. 3 Operate the door in the desired direction by pulling on one side or the other of the continuous loop hoist chain. 4 Release the disconnect chain to operate the door again electrically. HJ 4 27 3 4 2 1 Manual Release