Lift-master 1140 User Manual

Lift-Master

Model 1156- 1/2HP
Model 1146 - 1/3HP

Model 1140- 1/4HP

Garage Door Opener

Owner's Manual

FOR RESIDENTIAL USE ONLY

Model 1160- 1/2 HP

Model 1150- 1/3HP

The Chamberlain Group, Inc.
A DUCHOSSOIS ENTERPRISE
845 Larch Avenue, Elmhurst, Illinois 60126

Model 1155 - 1/2HP

Model 1145- 1/3HP

CAUTION! PLEASE READ THIS MANUAL CAREFULLY

The MODEL NUMBER label is located on the front panel of your opener

THIS DEVICE COMPLIES WITH FCC RULES PART 15. Operation of this device is subject to the following two conditions: 1. This device
may not cause harmful interference. 2.This device must accept any interference that may be received including interference
undesired operation.

CONTENTS PAGE

Safety Rules.............................................................2

Carton Inventory.......................................................3

Features of Your Opener...........................................3

Specifications ........................................................... 3

Accessories..............................................................4

Completed Installation Illustration ............................. 5

Installation Information ............................................. 5

Operation of Your Opener.........................................6

Care and Maintenance of Your Opener......................7

Assembly.................................................................. 8

Installation................................................................10

FASTEN THIS MANUAL NEAR THE GARAGE DOOR AFTER INSTALLATION.

PERIODIC CHECKS OF THE OPENER ARE REQUIRED TO INSURE SATISFACTORY OPERATION.

CONTENTS PAGE

Limit Adjustment....................................................... 20

Force Adjustment......................................................21

Safety Reverse Test..................................................22

The Protector System.............................................22

Setting/Changing Code.............................................23

Having a Problem? ...................................................24

Repair Parts, Rail Assembly......................................26

Repair Parts, Installation........................................... 26

Repair Parts, Opener Assembly................................27

How To Order Repair Parts.......................................28

Warranty .................................................................. 28

that may cause

ACCESSORIES

10-FT T-RAIL:

OUTSIDE KEYLOCK:

Many useful accessories are available for your garage door opener. They are illustrated below with model numbers and
descriptions.

Model 61LM

STANDARD REMOTE CONTROL
TRANSMITTER:

Single-Function with visor clip

.

Model 1710

Fully assembled 10-ft. T-rail with full
chain. Allows 10-foot garage doors
to open fully

Model 62LM 2-CHANNEL REMOTE CONTROL

TRANSMITTER:

With visor clip.

Model 63LM

Model 64LM

Model 66LM

Model 1708

MULTI-FUNCTION REMOTE
CONTROL TRANSMITTER:

With visor clip.

MINI MULTI-FUNCTION REMOTE
CONTROL TRANSMITTER:

With key ring.

KEYLESS ENTRY SYSTEM:

Enables homeowner to operate
garage door opener from outside by
entering code on specially designed
keypad.

8-FT T-RAIL:

Fully assembled 8-ft. T-rail with full
chain. Allows 8-ft. garage doors to
open fully

Model 56

Model 60

Model 1702

Model 70

MULTI-FUNCTION CONTROL
PANEL:

Provides a Lock Switch feature
which prevents operation of garage
door opener from remote control
transmitters and a Light Switch
feature for constant light.

Opens garage door automatically
from outside when transmitter is not
handy

OUTSIDE QUICK RELEASE

LOCK:
REQUIRED for a garage with NO
service door.

Allows manual operation of garage
door from outside in case of power
failure .

"THE PROTECTOR SYSTEM":

Provides auxiliary support to the safety
features built into your opener. The
system's invisible beam, when broken by
an obstruction, causes a closing door to
open and prevents an open door from
closing. Strongly recommended for
homeowners with young children.

BEFORE YOU BEGIN, PLEASE TAKE SOME TIME TO CAREFULLY EXAMINE THE
ILLUSTRATIONS ON THE FOLLOWING PAGE OF A TYPICAL GARAGE DOOR OPENER
INSTALLATION ON BOTH A SECTIONAL AND A ONE-PIECE DOOR.

Some installation instructions vary for sectional and one-piece doors. Follow only those
instructions which apply to your door type.

Do you have a finished ceiling in your garage? If so, you will need a support bracket
and additional fastening hardware. Refer to Step 4, Page 13 for specific requirements.

Do you have a lightweight or metal door (or does it have glass panels)? If so,
horizontal and vertical reinforcement is required. Refer to Step 8, Page 17.

4

Adjustment

STEP 1

LIMIT ADJUSTMENT settings regulate the points at
which the door will stop when moving up or down.

NOTE: Door STOPS in the UP direction if anything
interferes with door travel. Door REVERSES in the
DOWN direction if anything interferes with the door
travel (including binding or unbalanced doors).

PROCEDURE: To operate the opener, press the Door

Control Button. Run the opener through a COMPLETE
TRAVEL CYCLE. No limit adjustments are necessary
when the door opens and closes completely and doesn't
reverse unintentionally when fully closed.

The following chart outlines adjustment procedures. Run the opener through a COMPLETE TRAVEL
CYCLE AFTER EACH ADJUSTMENT.

Adjust UP and DOWN Limits

NOTE: REPEATED OPERATION OF THE OPENER DURING ADJUSTMENT PROCEDURES MAY CAUSE
MOTOR TO OVERHEAT AND SHUT OFF. SIMPLY WAIT 15 MINUTES AND TRY AGAIN.

Read the chart carefully before proceeding to Step 2. Use a screwdriver to make limit adjustments.

LIMIT ADJUSTMENT CHART

IF DOOR DOES NOT OPEN COMPLETELY

BUT OPENS AT LEAST FIVE FEET

Increase UP travel. Turn the UP LIMIT adjustment
screw clockwise. One turn equals 2" of travel.

If door does not open at least 5 feet: adjust UP
(OPEN) FORCE as explained in Step 2.

IF DOOR DOES NOT CLOSE COMPLETELY

Increase DOWN travel. Turn down limit adjustment
screw counterclockwise. One turn equals 2" of travel.

If the door still will not close completely, the header
bracket is positioned too high. See Step 1, page 10.

Increase DOWN travel. Turn down limit adjustment
screw counterclockwise. One turn equals 2 inches of
travel.

Decrease DOWN travel. Turn down limit adjustment
screw clockwise. One turn equals 2 inches of travel.

IF DOOR REVERSES WHEN CLOSING AND THERE
IS NO INTERFERENCE TO TRAVEL CYCLE

Test door for binding: Pull manual release handle.
Manually open and close door. If door is binding, call a
door serviceman. If door is not binding or unbalanced,
adjust DOWN (CLOSE) FORCE. See Step 2.

IF ONE-PIECE DOOR DOES NOT

CLOSE COMPLETELY

IF OPENER REVERSES IN FULLY

CLOSED POSITION.

20