Craftsman 139.18451D User Manual

Owner's Manual
112 HP
315 N GARAGE DOOR OPENER
For Residential Use Only
Models • 139.18451 D • 139.18452D • 139.18453D • 139.18473D
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Read and follow all safety rules
and operating instructions before
first use of this product.
Fasten the manual near the garage
door after installation.
Periodic checks of the opener are
required to ensure safe operation.
• Safety Precautions
• Assembly
• Installation
• Adjustment
• Maintenance
• Operation
• Troubleshooting
• Parts List
Sears Canada, Inc., Toronto, Ontario M5B 2B8

Craftsman 139.18451D Specifications

General

Brand	Craftsman
Model	139.18451D
Category	Garage Door Opener
Language	English

Summary

Introduction and Safety

Garage Door Opener Assembly

Assemble Rail, Trolley, and Idler Pulley

Step-by-step guide to assembling the rail, trolley, and installing the idler pulley.

Install Chain/Cable and Tighten Tension

Threading, connecting the chain/cable, and adjusting tension.

Installation Procedures

Header Bracket Installation

Locating and securely mounting the header bracket to the wall or ceiling.

Attach Rail and Position Opener

Install Safety Reversing Sensors

Mounting and wiring the safety eye sensors for obstruction detection.

Attach Door Bracket and Arm

Adjusting Opener Performance

Adjust Travel Limits and Door Force

Setting the door's open/close positions and the force for movement.

Test Safety Systems

Verifying the door reverses correctly and sensors are functional.

Operating Your Opener

Safe Operation Guidelines

Maintenance and Troubleshooting

Troubleshooting Common Problems

Diagnosing and resolving issues using the diagnostic chart.

Programming Functions