Model mj/mgj, Model mhs – LiftMaster MGJ Medium-Duty Gear-Reduced Jackshaft Operator for Rolling Grilles and Shutters User Manual

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MODEL MJ/MGJ

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 emergency egress device

to operate the door again electrically.

MODEL MHS

Keyhole Bracket

Manual Disconnect for Models MJ and MGJ

This operator includes two methods of manual operation:
1. A disconnect sash chain for push-up/pull-down operation. This

chain can be found on the hoist side of the operator. See Manual
Disconnect - Model MJ/MGJ for instructions.

2. A hoist engagement sash chain for manual hoist operation. This

chain can be found on the clutch side of the operator. See Manual
Disconnect - Model MH for instructions.

When operator is disconnected by the manual operation chain, hoist
and electrical operation will not function.

To prevent possible SERIOUS INJURY from a moving chain,
DISCONNECT electric power to the operator BEFORE manually
operating your door.

ATTENTION

AVERTISSEMENT

AVERTISSEMENT

AVERTISSEMENT

WARNING

CAUTION

CAUTION

WARNING

WARNING

PRECAUCIÓN

ADVERTENCIA

ADVERTENCIA

ADVERTENCIA

Electrical Interlock with Hoist Chain (when present) for Model MHS

Chain Retaining Bracket
(with pad locking provisions)

Hoist Chain

M A N U A L D I S C O N N E C T ( M O D E L S M J / M G J & M H S )

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