lift-master hmj ユーザーズマニュアル

5

Keyhole Bracket

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 (small 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 (large chain).

3. The disconnect chain must be released from the
chain keeper before the door will operate again
electrically.

7.

Install Hand Chain  (Models MH and HMJ only)
Place hand chain around hand chain wheel.  Be
sure to pass it through both openings in the chain
guide.  Remove enough links so chain hangs
approximately two feet above the floor

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. 

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. Release the disconnect chain to operate the
door again electrically.

8.

Mount Chain Keeper / Keyhole Bracket
Using suitable hardware mount the chain keeper
approximately 4 feet above the floor, near the free
hanging chain.  Remove disconnect sash chain
from bag and place the end through the keyhole in
the the chain keeper.  Remove excess links if
necessary.

Manual Disconnect for Models MJ and HMJ

Electrical Interlock with Hoist for Models MH and HMJ

Chain Retaining Bracket
(with pad locking provisions)

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 above for hoist

operation.

2.

Refer to Model MJ instructions above for manual

operation.

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