Chamberlain C450 User Manual

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Contents
Preparation ...................................... 2-5
Assembly .......................................6-10
Installation ..................................11-28
Install the Door Control ............21-22
Install the Protector System® ....23-26
Power ......................................27-28
Adjustments .................................29-31
MyQ® Smartphone Control .................32
Operation .....................................33-37
Using your Garage Door Opener .....34
To Open the Door Manually ...........34
Multi-Function
Control Panel ...........................35-36
Remote Control and
Keyless Entry ................................36
Homelink® ...................................36
To Erase the Memory .....................37
Maintenance .....................................38
Troubleshooting ........................... 39-40
Accessories ........................................ 41
Warranty ........................................... 42
Repair Parts ................................. 43-44
Owner’s Manual
C450
Chain Drive
Garage Door Opener
FOR RESIDENTIAL USE ONLY
PRE-PROGRAMMED REMOTE CONTROL
INCLUDED
www.chamberlain.com
www.mychamberlain.com
• 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 garage door opener are required to ensure
safe operation.
• The model number label is located on the front panel of your garage
door opener.
• This garage door opener is compatible with MyQ® and
Security+b2.0® accessories.
• DO NOT install on a one-piece door if using devices or features
providing unattended close. Unattended devices and features are
to be used ONLY with sectional doors.
Smart Garage Opener

Chamberlain C450 Specifications

General

Type	Chain Drive
Horsepower	1/2 HP
Smart Technology	Yes
Max Door Height	7 feet
Battery Backup	No
Wi-Fi Connectivity	Yes
Motor Type	AC
Safety Features	Safety sensors
Security	Rolling code technology
Remote Control	Included

Summary

Preparation

Check the Door

Assembly

Assemble Rail and Trolley

Instructions for assembling the rail and attaching the trolley mechanism.

Fasten Rail to Motor Unit

Steps for securely attaching the assembled rail to the main motor unit.

Install Idler Pulley and Chain

Tighten the Chain

Procedures for properly tightening the chain for optimal operation.

Installation

IMPORTANT INSTALLATION INSTRUCTIONS

Header Bracket Location and Mounting

Guidance on selecting the correct mounting location for the header bracket.

Mounting the Opener Unit

Steps for attaching the rail and positioning the opener unit for hanging.

Install Door Controls and Safety Sensors

Instructions for installing door controls, wiring, warning labels, and safety sensors.

Connect Power

Instructions for connecting the garage door opener to a power source.

Adjustments

Program the Travel Limits

Detailed steps for programming the garage door's open and close travel limits.

Test Safety Reversal System

Procedure to test the safety reversal system after adjustments.

Test Protector System

MyQ® Smartphone Control

Connect With Your Smartphone

Download and Set Up MyQ App

Operation

IMPORTANT SAFETY AND OPERATIONAL INSTRUCTIONS

Basic Opener Operation

Control Panel and Remote Functions

Maintenance

Troubleshooting

Diagnostic Chart

Common Opener Issues and Solutions