User manual LIFT-MASTER 1140

[. . . ] Lift-Master The Chamberlain Group, Inc. A DUCHOSSOIS ENTERPRISE 845 Larch Avenue, Elmhurst, Illinois 60126 Garage Door Opener Owner's Manual FOR RESIDENTIAL USE ONLY Model 1160- 1/2 HP Model 1150- 1/3HP Model 1156- 1/2HP Model 1146 - 1/3HP Model 1155 - 1/2HP Model 1145- 1/3HP Model 1140- 1/4HP 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. [. . . ] Turn down limit adjustment screw counterclockwise. IF OPENER REVERSES IN FULLY CLOSED POSITION. Turn down limit adjustment screw clockwise. IF DOOR REVERSES WHEN CLOSING AND THERE IS NO INTERFERENCE TO TRAVEL CYCLE Test door for binding: Pull manual release handle. If door is binding, call a door serviceman. If door is not binding or unbalanced, adjust DOWN (CLOSE) FORCE. See 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. 20 ADJUSTMENT STEP 2 Adjust Force DO NOT USE FORCE ADJUSTMENTS TO COMPENSATE FOR A BINDING OR STICKING GARAGE DOOR EXCESSIVE 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 Grasp the door handle or door bottom when door is about halfway through DOWN (CLOSE) TRAVEL. 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. IF DOOR DOESN'T OPEN AT LEAST 5 FEET 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. [. . . ] (All other models) Complete with: Logic board End panel w/all labels Light socket (1160. 1150 only} End panel wlall labels (1160, 1150) End panel w/all labels (All other models) NOT SHOWN Chassis assy. hardware kit (includes screws not designated by a number in illustration) 13 14 15 16 17 18 19 20 3 4 5 6 7 8 9 10 11 41A2817 41B2991 143D100 143D110 175B88 108D36 108D34 30B363 30B387 30B366 12A373 41D3150 41A3583-2 41A3583-1 41A3583 41A2818 41D3452 41C3005 41C2726 41A2826 41A2822 41A3626 41A3627 21 41A3673 41A3712 41A2825 27 LIFT-MASTER SERVICE IS ON CALL OUR LARGE SERVICE ORGANIZATION SPANS AMERICA 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. INSTALLATION AND SERVICE INFORMATION IS AS NEAR AS YOUR TELEPHONE SIX DAYS A WEEK. SIMPLY DIAL OUR TOLL FREE NUMBER: WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION · PART NUMBER · PART NAME · MODEL NUMBER ADDRESS ORDERS TO: THE CHAMBERLAIN GROUP, INC. [. . . ]