Emergency Disconnect System; Torque Adjustment; Brake Adjustment Brake Parts - Chamberlain GT Owner's Manual

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.
1. Loosen set screws of torque adjustment nut on the
gear reducer.
2. Back off toque nut until there is very little tension
on the belleville washers.
3. Tighten torque nut gradually until there is just
enough tension to permit the operator to move the
door smoothly through a complete open/close cycle,
but to allow the reducer to slip if the door is obstruct-
ed.
4. Re-tighten the set screw that is directly over the flat
portion of the shaft.

EMERGENCY DISCONNECT SYSTEM

TORQUE ADJUSTMENT

TO DISCONNECT DOOR FROM OPENER
Emergency
Disconnect
Door Arm
TO RECONNECT DOOR ARM TO TROLLEY
Emergency
Disconnect
Door Arm
10
Pull emergency
release handle
straight down.
Emergency disconnect
will open.
Lift free end of
door arm to trolley.
Pull emergency handle
to allow arm to engage
roll pin. Release handle.
Emergency disconnect
will close.