Chamberlain 2280-267, 2280-976 manual

The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196

www.liftmaster.com

GARAGE DOOR OPENER

Model 2280 1/2 HP 2280-267 1/2 HP 2280-976 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.

■The model number label is located under the light lens on the front panel of your opener.

Contents

For Residential Use Only Introduction Pages Assembly Installation Adjustment Preparing your garage door Tools needed Planning Carton Inventory Attach the T-Railto the Motor Unit Set the Belt Tension Attach the Belt Cap Retainer Determine the Header Bracket Location ONE-PIECEDOOR WITHOUT TRACK NOTE: EXAMPLE One-piecedoor without track: jamb hardware One-piecedoor without track: pivot hardware Install the Header Bracket Attach the T-Railto the Header Bracket Position the Opener Hang the Opener Install the Door Control Install the Lights Attach the Emergency Release Rope and Handle Electrical Requirements Install The Protector System® INSTALLING THE BRACKETS Garage door track installation (preferred): Wall installation: Floor installation: MOUNTING AND WIRING THE SAFETY SENSORS ALIGNING THE SAFETY SENSORS TROUBLESHOOTING THE SAFETY SENSORS Fasten the Door Bracket ONE-PIECEDOORS Metal Doors: Connect Door Arm to Trolley ALL ONE-PIECEDOORS 1.Assemble the door arm, Figure 4: 2.Adjustment procedures, Figure 5: •Open door adjustment: decrease UP travel limit •Closed door adjustment: decrease DOWN travel limit Adjust the UP and DOWN Travel Limits Adjust the Force Test the Safety Reversal System Test the Protector System® Using Your Garage Door Opener Using the Wall-Mounted Door Control To Open the Door Manually Having a Problem Having a Problem? (Continued) To Add an Additional Hand-heldRemote Control To Erase All Codes From Motor Unit Memory *3-ChannelRemotes To Add or Change a Keyless Entry PIN Rail Assembly Parts Installation Parts Motor Unit Assembly Parts ACCESSORIES 1702LM Outside Quick Release: 2778BD 8 Foot Complete Rail: 2770BD LIFTMASTER GARAGE DOOR OPENER ONE-YEARLIMITED WARRANTY