Chamberlain M50 - 1/3HP User Manual

The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.chamberlaingroup.com
GARAGE DOOR OPENER
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.
Model M100 - 1/2HP
Model M50 - 1/3HP
®

Chamberlain M50 - 1/3HP Specifications

General

Brand	Chamberlain
Model	M50 - 1/3HP
Category	Garage Door Opener
Language	English

Summary

INTRODUCTION

Safety Symbol and Signal Word Review

Explains safety symbols (Warning, Caution) and their meanings for user safety.

Assembly Step 1: T-Rail to Motor Unit Connection

Assembly Step 2: Chain and Sprocket Installation

Critical Installation Safety Warnings

Installation Step 1: Determine Header Bracket Location

Header Bracket Location for Sectional & Tracked One-Piece Doors

Installation Step 2: Install Header Bracket

Wall Header Bracket Installation

Detailed steps for installing the header bracket onto the wall.

Ceiling Header Bracket Installation

Detailed steps for installing the header bracket onto the ceiling.

Installation Step 3: Attach T-Rail to Header Bracket

Installation Step 4: Position the Garage Door Opener

Positioning for Sectional or Tracked One-Piece Doors

Positioning for One-Piece Doors Without Track

Installation Step 5: Hang the Opener Unit

Installation Step 6: Install the Door Control

Installation Step 8: Attach Emergency Release Rope and Handle

Installation Step 9: Electrical Requirements and Wiring

Installation Step 10: Install The Protector System® (Safety Reversing Sensor)

Installing Safety Sensor Brackets

Safety Sensor Bracket Mounting Options

Options for mounting sensor brackets: track, wall, or floor.

Mounting, Wiring, and Aligning Safety Sensors

Installation Step 11: Fasten the Door Bracket

Fastening Door Bracket on Sectional Doors

Instructions for attaching the door bracket to sectional doors.

Fastening the Door Bracket on One-Piece Doors

Installation Step 12: Connect Door Arm to Trolley

Connecting Door Arm to Trolley for Sectional Doors

Connecting the Door Arm for One-Piece Doors

Adjustment Step 1: Adjust Travel Limits

Adjustment Step 2: Adjust Door Force Settings

Adjustment Step 3: Test Safety Reversal System

Adjustment Step 4: Test Protector System

OPERATION

Important Safety Instructions for Operation

Critical safety guidelines for operating the garage door opener safely.

Using Your Garage Door Opener

How to use the opener with remotes and controls for daily operation.

Manually Opening the Garage Door

Troubleshooting Common Opener Problems

Troubleshooting Common Opener Problems (Continued)

Programming Your Garage Door Opener

Adding Additional Remote Controls

Erasing All Programmed Codes

Programming a Keyless Entry PIN