Craftsman 139.18815 User Manual

Garage Door Opener
Models
139.18815 - 1/2 HP
139.18855 - 1/2 HP
139.18859 - 1/2 HP
139.18860 - 1/2 HP
For Residential Use Only
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Owner's 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 Safety Reversing System is connected
and properly aligned.
■ 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 of your
opener.

Craftsman 139.18815 Specifications

General

Type	Chain Drive
Horsepower	1/2 HP
Frequency	60 Hz
Battery Backup	No
Max Door Height	7 ft
Voltage	120V

Summary

SECTIONAL Door Installation

ONE-PIECE Door Installation

Assembly Steps

Assemble T-rail and Cable Pulley Bracket

Guides on assembling the T-rail sections and attaching the cable pulley bracket.

Install Trolley and Fasten T-rail

Instructions for installing the trolley onto the T-rail and securing the T-rail to the opener unit.

Install Chain, Cable, and Sprocket Cover

Details on attaching the chain and cable assembly and securing the sprocket cover.

Tighten Chain and Cable

Installation Steps

Determine Header Bracket Location

Install Header Bracket

Position the Opener

Hang the Opener

Install Wall Control Console

Electrical Requirements

Install Lights, Rope, and Handle

Safety Reversing Sensor Installation

Install and Align Safety Reversing Sensor

Guides on mounting and aligning the safety reversing sensor units for proper function.

Door Bracket Fastening

Fasten Door Bracket

Door Arm Connection

Connect Door Arm to Trolley

Adjustment Procedures

Adjust UP and DOWN Limits

How to set the travel limits for opening and closing the garage door.

Adjust the Force

Guidance on setting the force required for opening and closing the door.

Test Safety Reverse System

Procedures for testing the door's safety reversal system after adjustments.

IMPORTANT SAFETY INSTRUCTIONS

Operation of Your Opener

Receiver and Transmitter Programming

Having a Problem?

Service and Warranty Information