The Chamberlain Group, Inc.
A DUCHOSSOIS ENTERPRISE
845 Larch Avenue, Elmhurst, Illinois 60126
Lift-Master
Garage Door Opener
Owner's Manual
FOR RESIDENTIAL USE ONLY
Model 1156- 1/2HP
Model 1146 - 1/3HP
Model 1160- 1/2 HP
Model 1150- 1/3HP
Model 1140- 1/4HP
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 interferencethat may cause
undesired operation.
CONTENTS
PAGE
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
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
FASTEN THIS MANUAL NEAR THE GARAGE DOOR AFTER INSTALLATION.
PERIODIC CHECKS OF THE OPENER ARE REQUIRED TO INSURE SATISFACTORY OPERATION.
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Adjustment
STEP 1 Adjust UP and DOWN Limits
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.
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 ONE-PIECE DOOR DOES NOT
CLOSE COMPLETELY
IF DOOR DOES NOT OPEN COMPLETELY
BUT OPENS AT LEAST FIVE FEET
Increase DOWN travel. Turn down limit adjustment
screw counterclockwise. One turn equals 2 inches of
travel.
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 OPENER REVERSES IN FULLY
CLOSED POSITION.
Decrease DOWN travel. Turn down limit adjustment
screw clockwise. One turn equals 2 inches of travel.
IF DOOR DOES NOT CLOSE COMPLETELY
Increase DOWN travel. Turn down limit adjustment
screw counterclockwise. One turn equals 2" of travel.
IF DOOR REVERSES WHEN CLOSING AND THERE
IS NO INTERFERENCE TO TRAVEL CYCLE
If the door still will not close completely, the header
bracket is positioned too high. See Step 1, page 10.
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.
20
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DO NOT USE FORCE ADJUSTMENTS TO
COMPENSATE FOR BINDING OR
STICKING GARAGE DOOR EXCESSIVE
ADJUSTMENT STEP 2
Adjust Force
A
FORCE WILL INTERFERE WITH THE PROPER
OPERATION OF THE SAFETY REVERSE SYSTEM OR
DAMAGE THE GARAGE DOOR.
Force Adjustment Controls are located on rear panel of
opener. FORCE ADJUSTMENT settings regulate amount
of the power required to open and close door.
NOTE: The door STOPS in the UP direction if
anything interferes with its travel. Door REVERSES
in the DOWN direction if anything interferes with its
travel (including binding or unbalanced doors).
If the force adjustments are set too light, door travel may
be interrupted by nuisance reversals in DOWN direction
and stops in UP direction. Weather conditions can affect
the door movement, so occasional adjustment may be
needed.
Maximum force adjustment range is 260 degrees, about
3/4 of a complete turn. Do not force controls beyond that
point. Turn force adjustment controls with a screwdriver.
Adjustment Label
FORCE ADJUSTMENT CHART
TEST DOWN (CLOSE) FORCE
IF DOOR DOESN'T OPEN AT LEAST 5 FEET
Grasp the door handle or door bottom when door is about
halfway through DOWN (CLOSE) TRAVEL. Door should
reverse. If the door is hard to hold or doesn't
reverse,decrease DOWN (CLOSE) FORCE by turning the
control in a counterclockwise direction. Make 10 degree
turn adjustments until door reverses normally. After each
adjustment, run opener through a complete cycle.
Increase UP (OPEN) FORCE by turning the control in a
clockwise direction. Make 10 degree turn adjustments until
door opens completely.Readjust UP LIMIT if necessary.
After each adjustment, run opener through a complete
travel cycle.
IF DOOR REVERSES DURING DOWN
(CLOSE) CYCLE
Increase DOWN (CLOSE) FORCE by turning control
clockwise. Make 10 degree turn adjustments until door
completes close cycle. After each adjustment, run the
opener through a complete travel cycle.
PROCEED TO STEP 3
21
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THE SAFETY REVERSE SYSTEM TEST IS
IMPORTANT. GARAGE DOOR MUST RE-
ADJUSTMENT STEP 3
Test Safety Reverse System
VERSE ON CONTACT WITH A ONE-INCH
OBSTACLE PLACED ON THE FLOOR. FAILURE TO
PROPERLY ADJUST OPENER MAY RESULT IN
SERIOUS PERSONAL INJURY FROM A CLOSING
GARAGE DOOR. REPEAT TEST ONCE A MONTH AND
ADJUST AS NEEDED.
PROCEDURE: Place-a one-inch obstacle on the floor
under the garage door. Operate door in DOWN direction.
The door MUST reverse on the obstruction.
If the door STOPS on the obstruction, it is not traveling
far enough in the DOWN direction. Increase the DOWN
limit by turning DOWN limit adjustment screw
counterclockwise 1/4 turn. REPEAT TEST.
NOTE: Make sure limit adjustments do not force the
door arm beyond a straight up and down position.
See the illustration on Page 18/19.
When the door reverses on the one-inch obstacle,
remove the obstruction and run the opener through a
complete travel cycle.
Door MUST NOT reverse in closed position. Repeat
Adjustment Steps 1, 2 and 3 if necessary.
REPEAT ADJUSTMENT STEP 3 AFTER:
• EACH ADJUSTMENT OF DOOR ARM LENGTH, CLOSE
FORCE OR DOWN LIMIT.
• ANY REPAIR OR ADJUSTMENT OF GARAGE DOOR
(INCLUDING SPRINGS AND HARDWARE).
• ANY REPAIR OR BUCKLING OF THE GARAGE FLOOR R.
• ANY REPAIR OR ADJUSTMENT OF THE GARAGE DOOR
OPENER.
THE PROTECTOR SYSTEM PROVIDES AN ADDITIONAL
MEASURE OF SAFETY AGAINST A SMALL CHILD BEING
CAUGHT UNDER A GARAGE DOOR. It uses an invisible
beam which, 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.
THE PROTECTOR SYSTEM
Installation of Optional Safety Feature
After opener has been installed and adjusted, THE
PROTECTOR SYSTEM accessory can be installed.
Instructions are included with this optional
device.
22
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ACTIVATE THE OPENER ONLY WHEN DOOR IS
IN FULL VIEW, FREE OF OBSTRUCTION AND
PROPERLY ADJUSTED . NO ONE
Radio Controls
F.C.C. rules prohibit adjustments to or modification of receiver and/or remote control
transmitter circuitry except for changing the code setting and replacing the remote
control transmitter battery. THERE ARE NO USER SERVICEABLE PARTS.
SHOULD ENTER OR LEAVE GARAGE WHILE DOOR IS IN
MOTION. DO NOT ALLOW CHILDREN TO OPERATE
REMOTES OR DOOR CONTROL BUTTONS. DO NOT
ALLOW CHILDREN TO PLAY NEAR THE DOOR.
Manufactured under 1 or more of the following U.S. patents: RE29,525: 4,037,201;
4.750.118: 4.806.930
Other Patents Pending
Your garage door opener receiver and remote control transmitter have been set at the factory to a matching
code. If you want to CHANGE your code or purchase additional remotes, follow the Instructions below. The code
in any NEW remote control must be set to match the code in the original remote control.
MATCH/CHANGE THE CODE IN REMOTE CONTROL(S)
SET CODE SWITCHES IN ALL REMOTES TO MATCHING POSITIONS
PROCEDURE: Slide battery compartment cover back to access the
code switches in your single function remote control and any new
remote control
Place remote controls side by side as shown and set code switches
in ALL remotes to matching positions (+, -, 0). Use a pen or
screwdriver to slide the switches.
NOTE: Instructions for matching the code switches in two-channel and multi-function remote control
transmitters are included with those accessories.
MATCH/CHANGE THE CODE IN THE RECEIVER
GARAGE DOOR OPENERS
WITH RECEIVER SMART CODE BUTTON
1. Press the RECEIVER Smart Button on the back panel of the
opener as shown The adjacent indicator light will turn ON.
CAUTION: Door will begin to move immediately if any
transmitter has been activated.
If this occurs, wait until the door has completed its UP or
DOWN cycle. Then begin again at Step 3.
REMOTE CONTROL
Push
2. STAND AWAY FROM THE DOOR and press the remote
control transmitter push button The indicator light will turn OFF
and the door will move. Receiver and remote control(s) codes
now match. The opener will operate when either the door
control button or the remote control transmitter push button is
pressed
TRANSMITTER
Button
NOTE: If the remote control transmitter push button
is not pressed within 30 seconds, the indicator light
will turn OFF. In that case, begin again at Step 1.
23
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Repair Parts
RAIL ASSEMBLY PARTS LIST
3
Chain
Pulley Bracket
41A2780
Inner Trolley w/Rod
41B3243
2
Full Chain Assy.
41D384
6
Master Link Kit
1
1A995
Outer Trolley
41B3244
4
One-Piece
T-Rail
5
183B99
NOT SHOWN
Owners Manual
114A1225
7
INSTALLATION PARTS LIST
Lighted Push
10 Button Assembly
41A2756
13
Multi-Function
Control Panel
41A3586
12
2 Strand
Bell Wire
9
4 Strand
Bell Wire
217A241
Remote Control Transmitter
Case, Cover & Screw Assembly
(circuit board not included)
41A3593
217A238
11
12V Battery
10A14
18
Door Bracket
17
Plate 12B380
Door Bracket
12B374
14
15
Remote Control
Transmitter
Visor Clip
Curved Door
Arm Section
178B35
8
16
19
Straight Door
Arm Section
178B34
Header Bracket Plus
Clevis and Fastener
41A2829
Emergency Rope
& Handle Assembly
41A2828
29C128
26
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Repair Parts
Chassis Assembly Parts List
KEY PART
NO. NO.
KEY PART
NO. NO.
DESCRIPTION
DESCRIPTION
12
41D3058
Universal replacement motor & bracket assy.
Complete with: Motor, worm, bracket,
bearing assembly RPM sensor
1
41A3260
Sprocket cover with screw and idler pulley
(1156, 1146)
Sproket cover (1160, 1155, 1145, 1140)
31C290
2
41A3261
41A2827
Gear and sprocket assy. (1156, 1146)
Gear and sprocket assy. (All other models)
Complete with:
Spring washer
Thrust washer
Retaining ring
Bearing plate
Roll pins (2)
Drive gear and Worm gear
Helical gear w/retainer and Grease
Drive/worm gear kit w/grease
Roll pins (2)
Line cord
End panel w/all labels
End panel w/all labels (1160, 1150)
Light socket
41A3583-2
41A3583-1
41A3583
41A2818
41D3452
41C3005
41C2726
41A2826
41A2822
41A3626
Cover (1160, 1156, 1155)
Cover (1150, 1146, 1145)
Cover (1140)
Helical gear 8 retainer w/grease
Limit switch assembly
RPM sensor assembly
Wire harness assy. w/plug
Shaft bearing kit
13
14
15
16
17
18
19
20
Interrupter cup assy.
Receiver Logic Board assy. (1160, 1150)
3
41A2817
41A3627
Receiver logic board assy. (All other models)
Complete with:
Logic board
4
5
6
7
8
41B2991
143D100
143D110
175B88
108D36
108D34
30B363
30B387
30B366
12A373
41D3150
End panel w/all labels
Light socket (1160. 1150 only}
End panel wlall labels (1160, 1150)
End panel w/all labels (All other models)
Lens
21
41A3673
41A3712
41A2825
Lens (1160, 1150)
Capacitor- 1/2 h:p.
Capacitor- 1/3 h.p.
Capacitor- 1/4 h.p.
Capacitor bracket
Terminal block w/screws
9
NOT SHOWN Chassis assy. hardware kit
(includes screws not designated by a number
in illustration)
10
11
27
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LIFT-MASTER SERVICE
IS ON CALL
HOW TO ORDER
REPAIR PARTS
Selling prices will be furnished on request or parts will be
shipped at prevailing prices and you will be billed accordingly.
OUR LARGE SERVICE ORGANIZATION
SPANS AMERICA
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE
FOLLOWING INFORMATION
INSTALLATION AND SERVICE INFORMATION IS AS
NEAR AS YOUR TELEPHONE SIX DAYS A WEEK.
SIMPLY DIAL OUR TOLL FREE NUMBER:
• PART NUMBER
• PART NAME
• MODEL NUMBER
1-800-528-6563
ADDRESS ORDERS TO:
THE CHAMBERLAIN GROUP, INC.
Parts and Service Department
2106 N. Forbes Boulevard
Tucson, AZ. 85745
HOURS: 7:00 a.m. TO 3:30 p.m.
(Mountain Std. Time)
MONDAY through SATURDAY
For professional installation, parts and service, contact your
local LIFT-MASTER/CHAMBERLAIN
dealer. Look for him in the Yellow Pages, or call our Service
number for a list of dealers in your area.
SERVICE INFORMATION
TOLL FREE NUMBER:
1-800-528-6563
LIFT-MASTER GARAGE DOOR OPENER ONE-YEAR LIMITED WARRANTY
The Chamberlain/Lift-Master warrants to the first retail purchaser of this product that it will be free from any defect in materials and/or workmanship for a
period of twelve full months from the date of purchase. The product must be used in complete accordance with Lift-Master's instructions for installation,
operation and care.
LIMITED WARRANTY ON MOTOR
Model 1160: The motor is warranteed to be free from any defect in materials and/or workmanship for a period of 60 full months (5 years) from the date of
purchase.
Models 1156, 1155: The motor is warranteed to be free from any defect in materials and/or workmanship for a period of 48 full months (4 years) from the
date of purchase.
Model 1150: The motor is warranteed to be free from any defect in materials and/or workmanship for a period of 36 full months (3 years) from the date of
purchase.
Models 1146, 1145: The motor is warranteed to be free from any defect in materials and/or workmanship for a period of 24 full months (2 years) from the
date of purchase.
This warranty does not cover non-defect damage, damage caused by unreasonable use (including abuse, failure to provide reasonable and necessary
maintenance, or any alterations to the product), labor charges for dismantling or reinstalling of a repaired or replaced unit or replacement batteries.
If, during the warranty period, the product appears as though it may be defective CALL OUR TOLL FREE SERVICE NUMBER BEFORE DISMANTLING
IT (1-800-528-6563). If the product is then alleged to be defective please send it pre-paid and insured to our Service Center to obtain warranty repair. You
will be advised of shipping instructions when you call the number listed above.
Please be sure to include a brief description of the problem and a dated proof-of-purchase receipt with any product that is returned for warranty repair.
Product under warranty, which upon receipt by Chamberlain/Lift-Master is determined to be defective in materials and/or workmanship, will be repaired or
replaced (Chamberlain's option) at no cost to you and returned pre-paid. Defective parts will be repaired or replaced with new or factory rebuilt parts at
Chamberlain's option.
THE DURATION OF IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IS LIMITED TO THE
DURATION OF THIS WRITTEN WARRANTY. SOME STATES MAY NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS,
SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
All claims for consequential or incidental damages for breach of this warranty are excluded and in no event shall manufacturer's liability for breach of
warranty, negligence, strict liability or breach of contract exceed the cost of the product covered herein, but the purchaser is entitled to the remedies
expressly provided in this policy. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or
exclusion may not apply to you.
No representative or person is authorized to assume for us any other liability in connection with the sale of this product. This warranty gives you specific
legal rights, and you may also have other rights which may vary from state to state.
114A1225E
1990, The Chamberlain Group, Inc.
All rights reserved
Printed in Mexico
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