Sears 139.18847 User Manual
Garage door opener 1/2 hp owner’s manual

GARAGE DOOR OPENER
1/2 HP
OWNER’S
MANUAL
Model No.
139.18847
139.18857
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.
The Chamberlain Group, Inc.
Cover - SEARS
4/16/92 
®
■
Safety Precautions
■
Assembly
■
Installation
■
Adjustment
■
Care and Maintenance
■
Operation
■
Troubleshooting
■
Parts List
®
MD
®
MD
Sears Canada, Inc., Toronto, Ontario M5B 2B8
                    This manual is related to the following products:                                    
                                                                Table of contents                                                                        
                Document Outline
- Owner's Manual
 - Contents
 - You'll Need Tools
 - Safety Alert Symbols
 - SECTIONAL Door Installation
 - ONE-PIECE Door Installation
 - Opener Carton Inventory
 - Hardware Kits
 - Assembly Section
 - Installation Section
- Determine Header Bracket Location
 - Install Header Bracket
 - Attach T-rail to Header Bracket
 - Position the Opener
 - Hang the Opener
 - Install Door Control
 - Install the Lights and Lenses
 - Attach Emergency Release Rope and Handle
 - Electrical Requirements
 - The Safety Reversing System
 - Install Safety Reversing Sensor
 - Fasten Door Bracket
 - Connect Door Arm to Trolley
 - SECTIONAL Doors Only
 - ALL ONE-PIECE Doors
 
 - Adjustment Section
 - IMPORTANT SAFETY INSTRUCTIONS
 - Care of Your Opener
 - Operation of Your Opener
 - Receiver and Remote Control Programming
 - Having a Problem?
 - Repair Parts
 - Accessories
 - Index
 - How to Order Repair Parts
 - Warranty
 
