Craftsman 139.53915SRT- 1/2 HP User Manual

Sears Best/CRAFTSMAN ®
Garage Door Opener
Models
139.53915SRT- 1/2 HP
139.53927SRT- 1/2 HP
For Residential Use Only
As of date of
manufacture,
meets all
ANSI/UL 325
Safety
Standards
Owner's Manual
Please read this manual and the enclosed safety materials carefully!
Fasten the manual near the garage door after installation.
Periodic checks and adjustment of the opener are required to ensure safe operation.
The model number label is located under the light lens
on the left side panel of your opener as shown.

Craftsman 139.53915SRT- 1/2 HP Specifications

General

Horsepower	1/2 HP
Drive Type	Chain Drive
Remote Control	Yes
Security	Rolling code technology
Battery Backup	No
Remote Controls Included	1
Safety Features	manual release

Summary

Garage Door Installation Types

Opener Assembly Procedures

Step 1: T-rail and Pulley Bracket Assembly

Assemble the T-rail sections and attach the cable pulley bracket.

Step 2: Trolley Installation on T-rail

Step 3: Fastening T-rail to Opener

Step 4: Chain/Cable and Sprocket Cover Installation

Step 5: Chain and Cable Tightening

Important Installation Safety Instructions

Installation Guide

Electrical Requirements

Understand and meet the electrical specifications for opener installation.

Safety Reversing Sensor System

Information about the Protector System and its components.

Safety Reversing Sensor Installation

Mount and align the safety reversing sensors for door operation.

One-Piece Door Adjustment Procedures

Open Door Adjustment: Decrease UP Limit

Procedure to adjust the UP limit for proper door opening.

Closed Door Adjustment: Decrease DOWN Limit

Procedure to adjust the DOWN limit for proper door closing.

Adjustment Procedures

Step 1: Adjusting UP and DOWN Limits

Set the points where the door stops during up and down travel.

Step 2: Adjusting Force Controls

Regulate the power needed to open and close the garage door.

Safety System Testing

Verify the functionality of the Protector System and safety reverse.

General Safety Instructions and Opener Care

Operation of Your Garage Door Opener

Activating and Controlling the Opener

Methods for opening, closing, and controlling the door with various features.

Radio Controls and Transmitter Programming

Transmitter Programming and Code Management

Instructions for adding, erasing, and managing transmitter codes.

Troubleshooting Common Problems

Opener and Door Operation Issues

Motor, Chain, and Power Issues