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Chamberlain 248730DM User Manual

Chamberlain 248730DM
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GARAGE DOOR OPENER ASSEMBLY/
INSTALLATION 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 under the light lens on the front panel of
your opener.
When you see these Safety Symbols and Signal Words on
the following pages, they will alert you to the possibility of
serious injury or death if you do not comply with the
warnings that accompany them. The hazard may come
from something mechanical or from electric shock. Read
the warnings carefully.
When you see this Signal Word on the following pages, it
will alert you to the possibility of damage to your garage
door and/or the garage door opener if you do not comply
with the cautionary statements that accompany it. Read
them carefully.
Mechanical
Electrical
WARNINGWARNING
CAUTION
WARNING
WARNING
WARNING
CAUTION
WARNING
WARNINGWARNING
WARNING
CAUTIONCAUTION
WARNING
WARNING
This garage door opener has been designed and tested to offer safe service provided it is installed, operated,
maintained and tested in strict accordance with the instructions and warnings contained in this manual.
IMPORTANT SAFETY NOTES
PD210DM • PD212DM
248730M
PD610DM • PD612DM • 7920KDM
PD612KLDM • 48930DM
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.chamberlain.com
There are two types of garage door openers pictured. Yours may appear slightly different.
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Do you have a question about the Chamberlain 248730DM and is the answer not in the manual?

Chamberlain 248730DM Specifications

General IconGeneral
TypeChain Drive
Horsepower1/2 HP
Battery BackupNo
Voltage120V
Drive TypeChain
SecurityRolling Code
Max Door Height7 ft
Remote ControlYes

Summary

Introduction and Safety Overview

Important Safety Notes

Defines safety signal words WARNING and CAUTION for user guidance.

Preparing Your Garage Door

Pre-Installation Checks and Warnings

Lists essential checks before installation, including door balance and safety warnings.

Installation Planning

Garage Door Type and Height Identification

Guidance on identifying door type and height for proper opener installation planning.

Safety Reversal System Gap Requirements

Warning about floor-to-door gap affecting safety reversal system effectiveness.

Tools and Parts for Installation

Required Tools for Installation

Comprehensive list of tools needed for the garage door opener installation.

Opener Components Identification

Visual guide to all parts included in the garage door opener package.

Hardware Identification

Assembly Hardware

Details and illustrations of hardware used for assembling the opener components.

Installation Hardware

Details and illustrations of hardware used for installing the opener.

Rail Assembly

Step 1: Assemble the Rail

Detailed instructions for assembling the garage door opener rail sections.

Rail Assembly Safety Caution

Warning to keep hands and fingers away from joints during rail assembly to prevent pinching.

Motor Unit and Rail Integration

Fastener Removal and Rail Attachment

Steps for removing motor unit fasteners and attaching the rail.

Idler Pulley and Cable Connection

Instructions for installing the idler pulley and connecting the chain/cable.

Chain and Trolley Assembly

Routing Chain and Attaching Trolley Components

Steps for routing the chain and assembling trolley parts like the threaded shaft.

Chain Tensioning and Assembly Completion

Final steps for tightening the chain and completing the opener assembly.

Assembly Safety Caution

Warning to avoid finger injury and to not connect power until instructed.

Installation Guidelines

Important Installation Warnings

Critical safety advice and warnings to reduce risk of severe injury or death during installation.

Installation for One-Piece vs. Sectional Doors

Guidance on proceeding based on whether the garage door is one-piece or sectional.

Header Bracket Installation

Marking Door Center and Travel Height

Steps for marking the garage door center and determining the highest point of travel.

Structural Support for Header Bracket

Guidance on adding a 2x4 support for header bracket installation on drywall or studs.

Header Bracket Rigidity Warning

Warning emphasizing the need for a rigidly fastened header bracket for proper safety reversal.

Mounting the Header Bracket

Marking and Drilling Bracket Holes

Procedure for marking and drilling pilot holes for the header bracket.

Attaching the Header Bracket

Steps for securely attaching the header bracket to the wall or ceiling.

Connecting Rail to Header Bracket

Instructions for attaching the opener rail to the mounted header bracket.

Positioning and Hanging the Motor Unit

Motor Unit Placement and Rail Angle

Steps for positioning the motor unit and rail for hanging, noting the typical angle.

Securing Motor Unit to Hanging Brackets

Instructions for attaching the motor unit to ceiling hanging brackets.

Falling Opener Safety Warning

Warning about securing the opener to structural supports to prevent injury from a falling unit.

Reinforcing Lightweight Doors

Horizontal and Vertical Reinforcement

Information on reinforcing lightweight doors like fiberglass or steel for opener attachment.

Fastening the Door Bracket

Positioning and Fastening the Door Bracket

Steps for positioning and securing the door bracket to the garage door.

Door Reinforcement Caution

Caution regarding reinforcing the inside of the door with angle iron.

Attaching Door to Trolley

Emergency Release Rope and Handle Attachment

Instructions for securely attaching the emergency release rope and handle.

Connecting Door Arms to Trolley and Bracket

Detailed steps for connecting the straight and curved door arms to the trolley and door bracket.

Falling Door Safety Warning

Critical safety warning regarding potential injury from a falling garage door during attachment.

Installing the Door Control Unit

Wiring and Mounting the Door Control

Steps for wiring, routing, and mounting the door control button and wires.

Door Control Installation Safety Warnings

Safety warnings for electrocution and closing door hazards during door control installation.

Light Bulb Installation and Electrical Setup

Installing Light Bulbs

Guidance on selecting and installing the correct light bulbs for the opener.

Electrical Requirements and Connections

Instructions for plugging into an outlet or making permanent wiring connections.

Electrical Safety Warnings

Critical safety warnings regarding electrocution and fire hazards during electrical setup.

Installing the Protector System®

Importance of the Safety Reversing Sensor

Explanation of the sensor's function and its critical role in preventing injury.

Sensor Mounting and Alignment

Details on mounting the sensors and ensuring they face each other across the door.

Protector System® Safety Warning

Warning emphasizing the necessity of a correctly installed and aligned safety reversing sensor.

Protector System® Mounting Options

Assembling and Mounting Safety Sensors

Steps for assembling the safety sensors and choosing mounting locations.

Sensor Mounting Configurations

Illustrations of preferred track installation and optional wall/floor mounting.

Sensor Alignment and Height Requirement

Note stressing correct alignment and height (max 6 inches) for sensor operation.

Wiring the Safety Reversing Sensor

Running and Securing Sensor Wires

Instructions for running the sensor wires to the motor unit and securing them.

Connecting Sensor Wires to Motor Unit

Detailed steps for connecting the sensor wires to the motor unit's quick connect terminals.

Adjustment Step 1: Setting Travel Limits

Adjusting Up and Down Travel Limits

Procedure for setting the points where the door stops when opening or closing.

Travel Limit Adjustment Guidance

When and how to adjust travel limits for proper door operation.

Travel Limit Safety and Clearance Warnings

Warnings about travel limits affecting safety reversal and vehicle clearance.

Adjustment Step 2: Adjusting Door Forces

Adjusting Opening and Closing Forces

Procedure for adjusting the force required to open and close the garage door.

Force Adjustment Guidance and Safety

When and how to adjust forces, with warnings against using it to compensate for binding.

Force Adjustment Safety Warnings

Critical warnings about force affecting safety reversal and not exceeding minimum closing force.

Adjustment Step 3: Safety Reversal System Testing

Testing the Safety Reversal System

Detailed procedure for testing the door's ability to reverse upon encountering an obstruction.

Testing the Protector System® Sensors

Procedure for testing the safety reversing sensors and identifying issues.

Safety Reversal and Protector System Warnings

Reiterates critical safety warnings related to reversal system and sensor functionality.

Operation and Safety Guidelines

General Operation Safety Instructions

Key safety rules for operating the garage door opener and preventing injury.

Using Your Garage Door Opener

How to operate the opener using remotes, door controls, and understanding its behavior.

Opener Light Features and Operation

Details on how opener lights function and how to control the Security+® light feature.

Using the Wall-Mounted Door Control

Multi-Function Door Control Operation

Explanation of the push bar, lock, and light buttons on the door control.

Door Control Light Feature Adjustment

How to adjust the auto-off timer for the opener's light.

Lock Feature Operation

Instructions for enabling and disabling the lock feature on the door control.

Opener Care and Maintenance

Routine Maintenance Checks

Schedule for monthly, bi-annual, and annual maintenance tasks.

Manual Door Operation Procedures

Instructions for safely disconnecting and reconnecting the trolley for manual door operation.

Manual Operation Safety Warning

Warning about potential injury from falling doors during manual operation.

Troubleshooting Common Opener Issues

Door Closing and Remote Activation Problems

Troubleshooting steps for door closing issues and remote activation failures.

Unexpected Door Reversals and Motor Issues

Steps to address doors reversing without apparent cause and motor unit noises.

Diagnostic Chart for Error Codes

Safety Sensor Wire Issues (1-4 Flashes)

Interpreting diagnostic flashes related to safety sensor wire problems.

Motor or Control Board Issues (5-6 Flashes)

Interpreting diagnostic flashes related to motor or control board failures.

Programming Opener Functions

Adding or Reprogramming Remote Controls

Step-by-step guide to program new or existing remote controls to the opener.

Controlling Opener Lights with Remote

Instructions for programming a remote button to control the opener's lights.

Using 3-Button Remote Controls

Notes on programming additional buttons on 315 MHz remotes.

Keyless Entry PIN Management

Adding or Reprogramming Keyless Entry PIN

Procedure to add or reprogram a PIN for the keyless entry system.

Changing an Existing Keyless Entry PIN

Steps to change a known PIN for the keyless entry system.

Temporary Keyless Entry and Code Management

Setting a Temporary Keyless Entry PIN

How to set a temporary PIN for visitors or service personnel.

Erasing All Opener Codes

Instructions to erase all previously programmed remote and keyless entry codes.

Remote Control Battery Replacement

Guidance on replacing the battery in the remote control.

Battery Replacement Safety Warning

Safety warnings regarding battery handling, swallowing, and disposal.

Repair Parts - Rail and Installation

Rail Assembly Parts List

Detailed list and diagrams of parts for the opener's rail assembly.

Installation Parts List

Detailed list and diagrams of parts used during the opener installation process.

Motor Unit Assembly Parts Breakdown

Motor Unit Components Identification

Diagrams and part numbers for components within the motor unit.

Optional Accessories

Accessory Product Listings

Catalog of optional accessories available for purchase, such as remotes and extensions.

Warranty Information

1-Year Limited Warranty (6-Year Motor)

Details of the limited warranty covering the opener and its motor for specific models.

1-Year Limited Warranty (Lifetime Motor)

Details of the limited warranty covering the opener and its motor for other specific models.

Service and Parts Ordering

Chamberlain Service Contact Information

Contact numbers and website for installation, service, and support.

How to Order Repair Parts

Instructions and necessary information for ordering replacement parts.

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