lift-master ht 用户手册

ADJUST LIMITS

MAKE SURE THE LIMIT NUTS ARE POSITIONED
BETWEEN THE LIMIT SWITCH ACTUATORS
BEFORE PROCEEDING WITH ADJUSTMENTS.

1. Depress open limit switch. The operator should

stop.

2. To increase door travel, spin nut away from

actuator. To decrease door travel, spin limit nut
toward actuator.

3. Adjust open limit nut so that door will stop in open

position with the bottom of the door even with top
of door opening.

4. Repeat Steps 1 and 2 for close cycle. Be sure

close limit actuator is engaged as door fully seats
at the floor.

If other problems persist, call our toll-free number for
assistance - 1-800-528-6563.

Travel Nut

Retainer

Open Limit

Nut

Close Limit

Nut

Close Limit

Switch

Open Limit

Switch

CLS

OPEN

OLS

ADLS

SLS

Actuator

Press Travel Nut Retainer

Down Toward Frame

TO DISENGAGE.

TO AVOID SERIOUS PERSONAL INJURY OR DEATH
FROM ELECTROCUTION, DISCONNECT ELECTRIC
POWER BEFORE MANUALLY MOVING LIMIT NUTS.

Header

Bracket

Straight

Door Arm
Assembly

1C3681

Emergency

Release

Handle

Door

Bracket

12B0407

Door

Chain

Clevis

Trolley

Emergency

Disconnect

Track

Curved

Door Arm

178B0045

NOTICE

TO DISCONNECT

DOOR FROM OPENER

Pull emergency

release handle

straight down.

Emergency

disconnect

will open.

Emergency

Disconnect

Door Arm

TO RECONNECT

DOOR ARM TO TROLLEY

Lift free end of

door arm to trolley.

Pull emergency handle
to allow arm to engage

clevis pin. Release

handle. Emergency

disconnect will close.

Emergency

Disconnect

Door Arm

EMERGENCY DISCONNECT SYSTEM

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.

WARNING