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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 1160- 1/2 HP
Model 1146 - 1/3HP
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 follow
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ACCESSORIES Many useful accessories are available for your garage door opener. They are illustrated below with model numbers and descriptions. Model 61LM STANDARD REMOTE CONTROL Model 1710 10-FT T-RAIL: TRANSMITTER: Fully assembled 10-ft. T-rail with full Single-Function with visor clip chain. Allows 10-foot garage doors . to open fully Model 56 Model 62LM 2-CHANNEL REMOTE CONTROL MULTI-FUNCTION CONTROL TRANSMITTER: PANEL: With visor clip. Provides a Lock Switch feature which prevents operatio
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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 do
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DO NOT USE FORCE ADJUSTMENTS TO ADJUSTMENT STEP 2 COMPENSATE FOR A BINDING OR STICKING GARAGE DOOR EXCESSIVE Adjust Force 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 anyt
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THE SAFETY REVERSE SYSTEM TEST IS ADJUSTMENT STEP 3 IMPORTANT. GARAGE DOOR MUST RE- VERSE ON CONTACT WITH A ONE-INCH Test Safety Reverse System 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 PROCEDURE: Place-a one-inch obstacle on the floor ADJUST AS NEEDED. under the garage door. Operate door in DOWN direction. The door MUST reverse on the obstruction. If the door STOPS on the obstru
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ACTIVATE THE OPENER ONLY WHEN DOOR IS Radio Controls IN FULL VIEW, FREE OF OBSTRUCTION AND F.C.C. rules prohibit adjustments to or modification of receiver and/or remote control PROPERLY ADJUSTED . NO ONE 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 Manufactured under 1 or more of the following U.S. patents: RE29,525: 4,037,201; 4.750.118: 4.806.9
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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 4 41B3244 One-Piece 5 T-Rail 183B99 NOT SHOWN Owners Manual 7 114A1225 INSTALLATION PARTS LIST Lighted Push 10 Button Assembly 41A2756 13 Multi-Function Control Panel 12 41A3586 9 2 Strand 4 Strand Bell Wire Bell Wire Remote Control Transmitter 217A238 217A241 11 Case, Cover & Screw Assembly (circuit board not included) 12V Battery 41
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Repair Parts Chassis Assembly Parts List KEY PART KEY PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION 12 41D3058 Universal replacement motor & bracket assy. 1 41A3260 Sprocket cover with screw and idler pulley (1156, 1146) Complete with: Motor, worm, bracket, 31C290 Sproket cover (1160, 1155, 1145, 1140) bearing assembly RPM sensor 2 41A3261 Gear and sprocket assy. (1156, 1146) 41A3583-2 Cover (1160, 1156, 1155) 13 41A2827 Gear and sprocket assy. (All other models) 41A3583-1 Cover
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LIFT-MASTER SERVICE HOW TO ORDER IS ON CALL REPAIR PARTS Selling prices will be furnished on request or parts will be OUR LARGE SERVICE ORGANIZATION shipped at prevailing prices and you will be billed accordingly. SPANS AMERICA WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE INSTALLATION AND SERVICE INFORMATION IS AS FOLLOWING INFORMATION 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 CHAMBE
