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Chamberlain 2280-267, 2280-976 Planning, ONE-PIECEDOOR WITH TRACK, SECTIONAL DOOR INSTALLATION, ONE-PIECEDOOR WITHOUT TRACK Support bracket

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Planning

Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below apply to your installation. Additional materials may be required. You may find it helpful to refer back to this page and the accompanying illustrations as you proceed with the installation of your opener.

SECTIONAL DOOR INSTALLATION

Horizontal and vertical reinforcement is needed for lightweight garage doors (fiberglass, steel, aluminum,

door with glass panels, etc.). See page 20 for details.

Header Wall

	— —	Door
	—	Door
	—	Center
		Center
	— — —
	— —

FINISHED CEILING

Support bracket & fastening hardware is required.

See page 13.

Motor Unit

Extension Spring
OR	Wall-
OR	mounted
Torsion Spring	Door
Torsion Spring	Control
Access Door
Safety
Reversing
Sensor

Gap between floor and bottom of door must not exceed 1/4"

Safety Reversing Sensor

FINISHED CEILING

ONE-PIECE DOOR WITHOUT TRACK Support bracket

& fastening hardware is required. See page 13.

Motor Unit

Header

Wall

Wall- mounted Door Control

Access

Door

Safety

Reversing Sensor

Gap between floor and bottom of door must not exceed 1/4"

Safety

Reversing Sensor

ONE-PIECE DOOR WITH TRACK

Access

Door

Safety Reversing Sensor

Gap between floor and bottom of door

must not exceed 1/4"

Safety Reversing Sensor

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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