LiftMaster T T LOGIC VERSION 1 Manual - Page 8

EMERGENCY DISCONNECT SYSTEM WARNING DOOR ARM IS RELEASED FROM TROLLEY WHEN EMERGENCY DISCONNECT OPENS. TO AVOID BEING STRUCK BY DOOR ARM, DO NOT STAND UNDER THE ROPE OR DOOR ARM WHEN PULLING THE EMERGENCY RELEASE. Header Bracket Trolley Track Clevis Pin Emergency Disconnect Door Bracket Straight Door Arm Assembly Chain Curved Door Door Arm NOTICE Emergency Release Handle TO DISCONNECT DOOR FROM OPENER Emergency Disconnect Door Arm Pull emergency release handle straight down. Emergency disconnect will open. TO RECONNECT DOOR ARM TO TROLLEY Emergency Disconnect Door 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. CLUTCH ADJUSTMENT 1. Remove cotterpin from nut on the clutch shaft. 2. Back off clutch nut until there is very little tension on the clutch spring. Adjusting Nut Spring Clutch Pad 3. Tighten clutch nut gradually until there is just enough tension to permit the operator to move the door smoothly but to allow the clutch to slip if the door is obstructed. When the clutch is properly adjusted, it should generally be possible to stop the door by hand during travel. 4. Reinstall Cotterpin. Cotterpin Washer Clutch Pulley CAUTION: The adjustable friction clutch is NOT an automatic reversing device. An electric or pneumatic reversing edge can be added to bottom edge of door if desired. 8 Clutch Plate