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General| Model Number | 139.53977SRT |
|---|---|
| Drive System | Chain |
| Horsepower | 1/2 HP |
| Voltage | 120V |
| Frequency | 60 Hz |
| Smart Technology | No |
| Battery Backup | No |
| Type | Chain Drive |
| Max Door Height | 7 ft |
| Safety Features | Auto-reverse, photoelectric sensors |
| Remote Controls | Included |
| Warranty | 1 year |
Step-by-step guide to assembling the opener's rail and installing the trolley.
Instructions on securely attaching the assembled rail to the motor unit.
Guide for installing the chain and cable and attaching the protective sprocket cover.
Guidance on finding the correct position for the header bracket based on door type.
Information on power requirements and making electrical connections for the opener.
Detailed steps for mounting and wiring the safety reversing sensor system.
How to set the points where the door stops during opening and closing.
How to set the force required for the door to open and close safely.
Procedure to test if the door reverses upon encountering an obstruction.
How to verify the proper function of the safety reversing sensor.
Solutions for various problems encountered with the opener and its components.
