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General| Brand | Craftsman |
|---|---|
| Model | 139.53800SRT |
| Category | Garage Door Opener |
| Language | English |
Lists the required tools for assembling and installing the garage door opener.
Ensuring the garage door is balanced, not sticking, and safe before opener installation.
Essential safety warnings and guidelines to follow before and during installation.
Locating and marking the correct position for the header bracket on the wall or ceiling.
Explanation of the invisible light beam safety system and its importance.
Guidelines for installing the safety reversing sensors to protect against entrapment.
Connecting sensor wires to the opener and checking indicator lights for correct setup.
Procedures for adjusting the open and close limits for one-piece garage doors.
Guidelines for adjusting the opener's up and down travel limits for proper door operation.
Procedures for adjusting the opening and closing force required by the opener.
Procedure to test the safety reversing sensor for proper operation and alignment.
Verifying the door reverses correctly upon striking an obstruction.
Step-by-step guide to programming remote controls to operate the garage door opener.
Diagnosing and resolving issues where the opener does not operate from controls or remotes.
Troubleshooting problems related to door not opening, closing, or reversing.
Resolving issues with safety sensors, opener strain, and motor hums.
