User manual CHAMBERLAIN 3275-267

[. . . ] 845 Larch Avenue Elmhurst, Illinois 60126-1196 www. liftmaster. com ® GARAGE DOOR OPENER Models 3275 3275-267 For Residential Use Only Owner's Manual Please read this manual and the enclosed safety materials carefully!Fasten the manual near the garage door after installation. The door WILL NOT CLOSE unless the Protector System® is connected and properly aligned. Periodic checks of the opener are required to ensure safe operation. [. . . ] · Does the door open and close completely?· Does the door stay closed and not reverse unintentionally when fully closed?If your door passes both of these tests, no limit adjustments are necessary unless the reversing test fails (Adjustment Step 3, page 25). Adjustment procedures are outlined below. Read the procedures carefully before proceeding to Adjustment Step 2. Use a screwdriver to make limit adjustments. Run the opener through a complete travel cycle after each adjustment. NOTE: Repeated operation of the opener during adjustment procedures may cause the motor to overheat and shut off. If anything interferes with the door's upward travel, it will stop. If anything interferes with the door's downward travel (including binding or unbalanced doors), it will reverse. HOW AND WHEN TO ADJUST THE LIMITS · If the door does not open completely but opens at least five feet (1. 5 m): Increase up travel. Turn the UP limit adjustment screw clockwise. One turn equals 3" (7. 5 cm) of travel. NOTE: To prevent the trolley from hitting the cover protection bolt, keep a minimum distance of 2-4" (5-10 cm) between the trolley and the bolt. · If door does not open at least 5 feet (1. 5 m): Adjust the UP (open) force as explained in Adjustment Step 2. · If the door does not close completely: Increase down travel. Turn the down limit adjustment screw counterclockwise. One turn equals 3" (7. 5 cm) of travel. If door still won't close completely and the trolley bumps into the pulley bracket (page 4), try lengthening the door arm (page 21) and decreasing the down limit. · If the opener reverses in fully closed position: Decrease down travel. Turn the down limit adjustment screw clockwise. One turn equals 3" (7. 5 cm) of travel. [. . . ] WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION: · PART NUMBER · PART NAME · MODEL NUMBER ADDRESS ORDERS TO: THE CHAMBERLAIN GROUP, INC. Country Club Road Tucson, Arizona 85706 SERVICE INFORMATION TOLL FREE NUMBER: OUR LARGE SERVICE ORGANIZATION SPANS AMERICA INSTALLATION AND SERVICE INFORMATION IS AS NEAR AS YOUR TELEPHONE. SIMPLY DIAL OUR TOLL FREE NUMBER: 1-800-528-9131 www. liftmaster. com For professional installation, parts and service, contact your local LIFTMASTER/CHAMBERLAIN dealer. Look for him in the Yellow Pages, or call our Service number for a list of dealers in your area. 1-800-528-9131 LIFTMASTER ONE-YEAR LIMITED WARRANTY LIFETIME MOTOR LIMITED WARRANTY The Chamberlain Group, Inc. [. . . ]