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General| Brand | Craftsman |
|---|---|
| Model | 139.53920DM |
| Category | Garage Door Opener |
| Language | English |
Explains the meaning of safety symbols and signal words used to highlight potential hazards and warnings.
Details the test for garage door balance and lists tools needed for installation.
Lists all parts included in the carton and required hardware for assembly and installation.
Guides through the initial assembly of the opener's rail, trolley, chain, and idler pulley.
Lists crucial safety instructions to prevent injury or death during installation.
Instructions for locating and installing the header bracket and mounting the opener unit.
Covers installation of door control, safety sensors, and door bracket.
Guides on connecting the door arm to the trolley and preparing for adjustments.
Explains how to adjust the door's travel limits and force settings for optimal operation.
Guides through testing the safety reversal system and the protector system after adjustments.
Provides instructions for safe operation, manual door control use, and a regular maintenance schedule.
Offers solutions for common problems and guides on interpreting diagnostic codes and programming.
Lists available repair parts, motor unit components, and details the product warranty.
