User manual LIFT-MASTER 2110

[. . . ] 845 Larch Avenue Elmhurst, Illinois 60126-1196 www. liftmaster. com ® ® GARAGE DOOR OPENER Models 2110 1/3 HP 2220 1/2 HP 2220-267 1/2 HP 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. [. . . ] · Run the opener through a complete travel cycle. 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. Door Arm Connector Hole Door Arm Emergency Release Handle Closed Door Inner Trolley Fully Open Trolley Correct Angle Door Arm Connector Hole Open Door Door with Backward Slant (Undesirable) Door Arm 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. To operate the opener, press the Door Control push bar. Run the opener through a complete travel cycle. · 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. NOTE: 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 5 feet (1. 5 m): Increase up travel. Turn the UP limit adjustment screw clockwise. One turn equals 2" (5 cm) of travel. NOTE: To prevent the trolley from hitting the cover protection bolt, keep a minimum distance of 2-4" (5-10 m) 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. [. . . ] Additionally, the motor is fully warranted for the lifetime of the product for Model 2220 and 2220-267. The product must be used in complete accordance with Chamberlain's instructions for installation, operation and care. The proper operation of this product is dependent on your compliance with the Owner's Manual instructions regarding installation, operation, maintenance and testing. Failure to comply strictly with those instructions will void this warranty in its entirety. [. . . ]