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General| Brand | Craftsman |
|---|---|
| Model | 139.53648D |
| Category | Garage Door Opener |
| Language | English |
Details warnings for preventing serious injury or death during garage door preparation.
Warning to use only specific bolts/fasteners for motor unit to prevent serious damage.
Alerts users to potential serious injury from moving parts and the need to secure the sprocket cover.
Critical warnings to reduce risk of severe injury or death during opener installation.
Warning to prevent damage to the garage door by resting the opener rail on a 2x4 on the door's top section.
Emphasizes secure fastening to prevent serious injury from a falling opener; use concrete anchors for masonry.
Details warnings for preventing electrocution and serious injury from a closing garage door.
Highlights risks associated with the emergency release, especially with unbalanced doors or when people are present.
Emphasizes grounding, proper outlets, and avoiding extensions to prevent shock or fire hazards.
Explains the function of the safety reversing sensor and its role in preventing entrapment injuries.
Stresses correct installation and alignment of the safety reversing sensor to prevent serious injury or death.
Guides on how to align the safety sensors for proper beam detection and indicator light confirmation.
Warns that fiberglass, aluminum, or steel doors require reinforcement before bracket installation.
Explains how to adjust UP and DOWN travel limits before connecting the door arm to the trolley.
Highlights how incorrect travel limit adjustments can interfere with the safety reversal system's operation.
Explains how excessive force affects the safety reversal system and warns against using force to mask door issues.
Stresses the critical need for regular testing of the safety reversal system to prevent serious injury or death.
Warns about serious injury or death from a closing door if the safety reversing sensor is not properly installed or aligned.
Critical safety guidelines to prevent severe injury or death during opener usage and door movement.
