Manuals / Craftsman / Household Appliance / Garage Door Opener

Craftsman 139.53834SRT3, 139.53646SRT2 Adjustment Step, Test The Safety Reversing Sensor

Models: 139.53648SRT2 139.53645SRT3 139.53834SRT3 139.53335SRT3 139.53646SRT2 139.53660SRT1

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Adjustment

Step 3

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Test The Safety

Reversing Sensor

Press the remote control push button to open the door.

•Place the opener carton in the path of the door.

•Press the remote control push button to close the door. The door will not move more than an inch, and the opener light will flash.

Professional service is required if the opener closes the door when the safety reversing sensor is obstructed.

The garage door opener will not close from a remote control if the indicator light in either sensor is off(alerting you to the fact that the sensor is misaligned or obstructed).

The garage door can be closed by pressing and holding the Door Control push button until down travel is completed.

Adjustment

Step 4

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Test the Safety

Reverse System

 

 

Test:

 

 

 

 

• Place a one-inch board (or a 2x4 laid flat) on the

 

 

 

floor, centered under the garage door.

 

 

 

• Operate the door in the down direction. The door

 

 

 

must reverse on striking the obstruction.

 

 

 

Adjustment:

 

 

 

t

If the door stepson the obstruction, it is not traveling

E

far enough in the down direction.

 

• Increase the DOWN limit by turning the DOWN

 

limit adjustment screw counterclockwise 1/4 turn.

 

• Repeat the test.

On a sectional door, make sure limit adjustments do not force the door arm beyond a straight up and down position. See the illustration on page 26.

• When the door reverses on the one-inch board, remove the obstruction and run the opener through 3 or 4 complete travel cycles to test adjustment.

If the door will not reverse after repeated adjustment attempts, call Sears Service Center for garage door opener service.

/

ard (or a 2x4 laid flat)

Important safety check

Repeat Adjustment Steps 1, 2 and 4 after:

•Each adjustment of door arm length, force controls or limit controls.

•Any repair to or adjustment of the garage door (including springs and hardware).

•Any repair to or buckling of the garage floor.

•Any repair to or adjustment of the opener.

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Craftsman 139.53834SRT3, 139.53646SRT2 Adjustment Step, Test The Safety Reversing Sensor, Test the Safety Reverse System
Page 29 Page 31

139.53648SRT2, 139.53645SRT3, 139.53834SRT3, 139.53335SRT3, 139.53646SRT2 specifications

The Craftsman 139.53660SRT1, 139.53646SRT2, 139.53335SRT3, 139.53834SRT3, and 139.53645SRT3 are a series of advanced garage door openers designed for homeowners looking to enhance convenience, security, and functionality in their daily lives. Each model is equipped with cutting-edge technologies that streamline garage access while ensuring safety and durability.

One of the standout features across these models is the use of a powerful motor system, providing reliable performance for heavy garage doors. The motor's horsepower rating varies across the models, but all ensure consistent lifting strength and rapid opening and closing speeds, catering to different door weights and sizes.

In terms of security, these Craftsman models incorporate advanced encryption technologies, making unauthorized access nearly impossible. The security features include rolling code technology, which changes the access code each time the remote is used, thus preventing cloning and ensuring that only authorized users can operate the door.

These openers also prioritize ease of use. With their compatible smartphone app integration, users can remotely control and monitor their garage doors. Whether they are at home or away, users can receive notifications, check the status of their doors, and even open or close them at the touch of a button, adding an extra layer of convenience.

The installation process is also user-friendly, with many of these models featuring an easy-to-follow instruction manual. Homeowners can typically complete the installation themselves, saving time and money compared to hiring a professional. The durable construction of these openers ensures that they withstand the test of time, with many units equipped with weather-resistant materials that protect against rust and corrosion.

In addition to their functional features, the aesthetic designs of the Craftsman series are noteworthy. They fit seamlessly into a variety of garage styles, with a sleek finish that enhances overall garage appeal.

Overall, the Craftsman 139.53660SRT1, 139.53646SRT2, 139.53335SRT3, 139.53834SRT3, and 139.53645SRT3 garage door openers represent a blend of functionality, security, and user convenience. Homeowners seeking reliable, smart, and efficient solutions for managing their garage doors will find these models highly effective, offering peace of mind and ease of use in their everyday lives.