Craftsman 139.53641SRT User Manual

1/2 HP
GARAGE DOOR OPENER
OWNER’S
MANUAL
Model No.
139.53525SRT
139.53627SRT
139.53636SRT
139.53640SRT
139.53641SRT
For Residential Use
Only
Caution:
Read and follow all
safety rules and
operating instructions
before first use of this
product.
Fasten the manual
near the garage door
after installation.
Complies with UL 325
regulations effective
January 1, 1993
®
■ Safety Precautions
■ Assembly
■ Installation
■ Adjustment
■ Care and Maintenance
■ Operation
■ Troubleshooting
■ Parts List
®
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.

Craftsman 139.53641SRT Specifications

General

Type	Chain Drive
Horsepower	1/2 HP
Remote Control	Yes
Smart Home Compatibility	No
Frequency	60 Hz
Battery Backup	No
Max Door Height	7 ft
Safety Features	Safety Sensors
Voltage	120V

Summary

Assembly

Assemble T-rail and Attach Pulley Bracket

Connects T-rail sections and attaches the cable pulley bracket.

Install Chain/Cable and Sprocket Cover

Attaches the chain/cable and secures the sprocket cover.

Installation

Determine Header Bracket Location

Identifies the correct mounting position for the header bracket based on door type.

Install the Header Bracket

Attaches the header bracket to the wall or ceiling using lag screws.

Connect Door Arm to Trolley

Connects the door arm sections to the trolley and door bracket.

Safety Systems

The Safety Reversing System

Explains the function and importance of the safety reversing sensor.

Install the Safety Reversing Sensor

Mounts and aligns the safety reversing sensor units across the garage door path.

Adjustment and Operation

Adjust UP and DOWN Limits

Regulates the door's stopping points for opening and closing.

Adjust the Force

Sets the amount of power required for opening and closing the door.

Operation of Your Opener

Details how to operate the opener using various controls and features.

Troubleshooting

Having a Problem?

Offers solutions for common issues with opener operation and performance.