Chamberlain C450C 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
Connect 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
C450C
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 C450C Specifications

General

Type	Chain Drive
Horsepower	1/2 HP
Smart Features	Yes
Battery Backup	No
Wi-Fi Connectivity	Yes
Remote Control	Yes
Connectivity	Wi-Fi
Remote Controls Included	1
Safety and Security	Safety sensors
Lighting	LED
Security	Rolling code technology
Warranty	1-year

Summary

Opener Assembly Steps

Assemble Rail and Install Trolley

Fasten Rail to Motor Unit

Install Idler Pulley

Install Drive Chain

Tension the Drive Chain

Garage Door Opener Installation

Key Installation Safety Instructions

Crucial safety warnings and general instructions for installation.

Preventing Severe Injury or Death

Lists paramount safety precautions to prevent serious harm or fatalities.

Determine Header Bracket Location

Guides on determining the correct placement for the header bracket.

Install Header Bracket

Provides instructions for installing the header bracket on the wall or ceiling.

Attach Rail to Header Bracket

Position Garage Door Opener Unit

Hang Garage Door Opener Unit

Instructions for securely hanging the garage door opener unit.

Attach Emergency Release Rope and Handle

Install Door Bracket

Guides on installing the door bracket, including reinforcement needs.

Install Door Bracket (One-Piece Doors)

Continues instructions for installing the door bracket on one-piece doors.

Connect Door Arm to Trolley (Sectional Doors)

Details on connecting the door arm to the trolley for sectional doors.

Connect Door Arm to Trolley (One-Piece Doors)

Continues instructions for connecting the door arm to the trolley for one-piece doors.

Install Door Control Unit

Guides on installing the wall-mounted door control.

Wire Door Control to Opener

Install Protector System® Sensors

Guides on installing the safety reversing sensor system.

Install Protector System® (Wall/Floor Mount)

Continues instructions for installing the Protector System in wall or floor configurations.

Wire Safety Reversing Sensors (No Pre-wiring)

Wire Safety Reversing Sensors (Pre-wired)

Connect Power to Opener

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

Align Safety Reversing Sensors

Guides on aligning the safety reversing sensors for proper operation.

Adjustments and Settings

Program Travel Limits

Step-by-step guide to programming the garage door's open and close travel limits.

Test Safety Reversal System

Instructions for testing the safety reversal system after adjustments.

Test Protector System® Functionality

Procedures for testing the Protector System's functionality.

MyQ® Smartphone Control Setup

Opener Operation

Critical Operation Safety Instructions

Lists critical safety warnings and instructions for operating the opener.

Using Your Garage Door Opener

Manual Door Opening Procedure

Multi-Function Control Panel Functions

Remote Control & Keyless Entry Programming

Maintenance Schedule

Troubleshooting Guide

Diagnostic Code Chart

Lists diagnostic codes, symptoms, and solutions for common opener issues.

Troubleshooting Common Issues