User manual CHAMBERLAIN 3275

[. . . ] 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!The door WILL NOT CLOSE unless the Protector System® is connected and properly aligned. The model number label is located on the front panel of your opener. TABLE OF CONTENTS Introduction 2-5 Adjustment 23-25 Safety symbol and signal word review . 25 Operation 26-30 Assembly 6-7 Attach the rail to the motor unit . [. . . ] Refer to the fully open trolley/ door arm positions in the illustration. · Closed door adjustment: decrease DOWN travel limit - Turn the DOWN limit adjustment screw clockwise 4 complete turns. Door Bracket Ring Fastener Lock Washers 5/16" Nuts 5/16"-18 Clevis Pin 5/16"x1-1/4" Straight Arm Bolts 5/16"-18x7/8 Curved Door Arm Figure 4 - Press the Door Control push button. The arm should touch the trolley just ahead of the door arm connector hole. Refer to the fully closed trolley/door arm positions in the illustration. Connect the door arm to the trolley: · Close the door and join the curved arm to the connector hole in the trolley with the remaining clevis pin. If the door has a slight "backward" slant in full open position as shown in the illustration, decrease the UP limit until the door is parallel to the floor. NOTE: When setting the up limit on the following page, the door should not have a "backward" slant when fully open as illustrated below. A slight backward slant will cause unnecessary bucking and/or jerking operation as the door is being opened or closed from the fully open position. Figure 5 Inner Trolley Outer Trolley Door Arm Connector Hole Door Arm Emergency Release Handle Closed Door Inner Trolley Outer Trolley Correct Angle Door Arm Open Door Door with Backward Slant (Incorrect) 22 ADJUSTMENT STEP 1 Adjust the UP and DOWN Travel Limits Limit adjustment settings regulate the points at which the door will stop when moving up or down. · 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). 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. 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 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. Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door. · Incorrect adjustment of garage door travel limits will interfere with proper operation of safety reversal system. · If one control (force or travel limits) is adjusted, the other control may also need adjustment. · After ANY adjustments are made, the safety reversal system MUST be tested. [. . . ] The unit's memory can store up to ten fingerprints. ENROLL ENROLL FAIL RETRY 35 LIFTMASTER 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. 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. [. . . ]