ADJUSTMENT STEP 3

Test the Safety Reversal System

TEST

•With the door fully open, 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.

ADJUST

•If the door stops on the obstruction, it is not traveling far enough in the down direction. Increase the DOWN limit by turning the DOWN limit adjustment screw counterclockwise 1/4 turn.

NOTE: On a sectional door, make sure limit adjustments do not cause the trolley to move within 2-1/2" of the trolley stop bolt. If necessary

lengthen straight door arm to maintain this minimum distance.

•Repeat the test.

•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.

IMPORTANT SAFETY CHECK:

Repeat Adjustment Steps 1, 2 and 3 after:

•Each adjustment of door arm length, limits, or force 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.

Without a properly installed safety reversalsystem, persons (particularly small children) could be

SERIOUSLYINJUREDor KILLEDby a closing garage door.

•Safety reversal system MUST be tested every month.

•If one control (force or travel limits) is adjusted, the other control may als0 needadjustment.

•After ANY adjustments are made,the safety reversal system MUST be tested. Door MUST reverseon contact with one-inch high object (or 2x4 laid flat) on the floor.

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ADJUSTMENT STEP 4

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 lights will flash.

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

If the opener closes the door when the safety reversing sensor is obstructed (and the sensors are no more than 6" above the floor), call for a trained door systems technician.

Without a properly installed safety reversingsensor, persons (particularly small children) could be SERIOUSLYINJUREDor KILLEDby a closing garage door.

Safety Reversing Sensor

3O

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Sears 139.53975SRT1, 139.53962SRT1 owner manual Test the Safety Reversal System, Test the Safety Reversing Sensor, Adjust
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139.53975SRT1, 139.53962SRT1 specifications

The Sears 139.53962SRT1 and 139.53975SRT1 are two sophisticated garage door opener models that have gained significant attention for their innovative features and technologies. These devices represent the cutting edge of convenience and security in residential garage systems.

One of the standout features of both models is the integrated MyQ technology. This allows users to control their garage doors remotely using a smartphone app, ensuring seamless access even when they are away from home. Whether you’re on vacation or simply running errands, the ability to monitor and control your garage door from anywhere adds an unmatched level of convenience and peace of mind.

Both the 139.53962SRT1 and 139.53975SRT1 come equipped with a powerful ¾ HP motor. This robust motor provides sufficient lifting power for standard-sized garage doors, ensuring efficient and reliable operation. The powerful motor is designed to handle heavy doors with ease, making it a suitable choice for a variety of residential applications.

Safety is a critical aspect of garage door systems, and these models excel in this area. They feature advanced safety sensors that detect obstructions in the door’s path. This means that if something is in the way as the garage door closes, it will automatically reverse, preventing potential accidents and injuries.

In addition to safety sensors, both models are equipped with rolling code technology. This system enhances security by changing the access code every time the remote is used, preventing unauthorized access and potential break-ins.

Another noteworthy characteristic of these garage door openers is their quiet operation. Thanks to a specially designed belt drive system, both models minimize noise during operation, making them ideal for homes with living spaces situated above the garage.

Installation is made simpler with the inclusion of detailed instructions and user-friendly components, allowing most homeowners to set up the system with minimal hassle.

Overall, the Sears 139.53962SRT1 and 139.53975SRT1 garage door openers combine powerful performance with advanced technology, safety features, and ease of use, making them top choices for anyone looking to upgrade their garage door system.
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