Chamberlain LiftMaster 3280 1/2HP - User Manual

The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.liftmaster.com
GARAGE DOOR OPENER
Model 3280 1/2HP
3280-267 1/2HP
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 on the front panel of your opener.
®

Summary

Assembly Step 1: Attach Rail to Motor Unit

Assembly Step 2: Set Belt Tension

Assembly Step 3: Attach Belt Cap Retainer

Important Installation Safety Instructions

Key Installation Safety Precautions

Essential warnings and guidelines for a safe opener installation process.

Installation Step 1: Determine Header Bracket Location

Installation Step 2: Install the Header Bracket

Installation Step 3: Attach Rail to Header Bracket

Installation Step 4: Position the Opener

Installation Step 5: Hang the Opener

Installation Step 6: Install the Door Control Panel

Installation Step 8: Attach Emergency Release Rope and Handle

Installation Step 9: Electrical Requirements and Connections

Installation Step 10: Install The Protector System

Mounting Brackets for Safety Sensors

Describes mounting sensors to door tracks, walls, or floor.

Mounting and Wiring Safety Sensors

Aligning the Safety Reversing Sensors

Installation Step 11: Fasten the Door Bracket

Installation Step 12: Connect Door Arm to Trolley

Adjustment Step 1: Adjust UP and DOWN Travel Limits

Adjustment Step 2: Adjust Door Force Settings

Adjustment Step 3: Test Safety Reversal System

Adjustment Step 4: Test Protector System Functionality

Operation Safety Instructions

Important Operation Safety Instructions

Critical safety rules for operating the garage door opener.

Manually Opening the Garage Door

Troubleshooting Common Problems

Diagnostic Chart for Error Codes

Programming Your Garage Door Opener

Add or Reprogram Remote Controls

Erase All Remote Codes

Keyless Entry PIN Management

Add, Reprogram, or Change Keyless Entry PIN

Chamberlain LiftMaster 3280 1/2HP Specifications

General

Horsepower	1/2 HP
Drive System	Chain Drive
Max Lift Height	7 feet
Remote Control	Yes
Warranty	4-year motor warranty, 1-year parts warranty
Voltage	120V
Speed	7 inches per second
Remote Controls Included	1
Battery Backup	No
Security+ 2.0	Yes
Safety Features	Safety sensors
Motor Type	AC Motor