ADJUSTMENT STEP 2

Adjust the Force

Force adjustment controls are located on the back panel of the motor unit. Force adjustment settings regulate the amount of power required to open and close the door.

If the forces are set too light, door travel may be interrupted by nuisance reversals in the down direction and stops in the up direction. Weather conditions can affect the door movement, so occasional adjustment may be needed.

The maximum force adjustment range is about 3/4 of a complete turn. Do not force controls beyond that point. Turn force adjustment controls with a screwdriver.

NOTE: If anything interferes with the door's upward travel, it will stop. If anything interferes with the door's downward

travel (including binding or unbalanced doors), it will reverse.

HOW AND WHEN TO ADJUST THE FORCES

1.Test the DOWN (close) force

•Grasp the door bottom when the door is about halfway through DOWN (close) travel. The door should reverse. Reversal halfway through down travel does not guarantee reversal on a 1-1/2" (3.8 cm) obstruction. See Adjustment Step 3, page 29. If the door is hard to hold or doesn't reverse, DECREASE the DOWN (close) force by turning

the control counterclockwise. Make small adjustments until the door reverses normally. After each adjustment, run the opener through a complete cycle.

•If the door reverses during the down (close) cycle and the opener lights aren't flashing, INCREASE DOWN (close) force by turning the control clockwise. Make small adjustments until the door completes a close cycle. After each adjustment, run the opener through a complete travel cycle. Do not increase the

force beyond the minimum amount required to close the door.

2.Test the UP (open) force

•Grasp the door bottom when the door is about halfway through UP (open) travel. The door should stop. If the door is hard to hold or doesn't stop, DECREASE UP (open) force by turning the control counterclockwise. Make small adjustments until the door stops easily and opens fully. After each adjustment, run the opener through a complete

travel cycle.

•If the door doesn't open at least 5 feet (1.5 m), INCREASE UP (open) force by turning the control clockwise. Make small adjustments until door opens completely. Readjust the UP limit if necessary. After each adjustment, run the opener through a complete travel cycle.

Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLYINJUREDor KILLEDby a closing garagedoor.

•Too much force on garage door will interfere with proper operation of safety reversalsystem.

•NEVERincreaseforce beyond minimum amount requiredto close garage door.

•NEVERuse force adjustments to compensate for a binding or sticking garage door.

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

•After ANY adjustments are made,the safety reversalsystem MUST be tested. Door MUST reverse on contact with 1-1/2"

high (3.8 cm) object (or 2x4 laid flat) on floor.

Force Adjustment

Controls

Back Panel

I

J

ADJUSTMENT LABEL

Open Force

Close Force

28

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Image 28
Sears 139.53930D owner manual HOW and When to Adjust the Forces, Test the Down close force
Page 27 Page 29

139.53930D specifications

The Sears 139.53930D is a sophisticated and reliable garage door opener that has made a significant mark in the world of home automation. With its innovative design and advanced features, this model stands out in the crowded marketplace of garage door systems.

One of the defining characteristics of the 139.53930D is its powerful motor. The opener is equipped with a robust 1/2 horsepower motor, providing ample lifting power for a variety of garage door sizes and weights. This ensures smooth and efficient operation, allowing homeowners to go about their daily routines without the worry of a sluggish or malfunctioning door.

Another key feature of the 139.53930D is its safety and security enhancements. The unit comes with a complete set of safety sensors that can detect objects in the door's path, stopping the door from closing if an obstruction is detected. This ensures added safety for children and pets, an essential consideration for any family. Additionally, the model incorporates a rolling code technology that generates a new access code every time the remote is used. This significantly reduces the risk of unauthorized access, giving homeowners peace of mind.

The installation process has also been made simpler with this model's user-friendly design. The package includes detailed instructions and all necessary hardware, making it accessible for both professional installers and DIY enthusiasts. The opener is compatible with various garage door sizes, accommodating most standard installations, which boosts its versatility.

Moreover, the Sears 139.53930D supports multiple forms of remote access. It comes with two streamlined remotes that make it easy to open and close the garage from a distance. For added convenience, the system is compatible with Smart Home technology, allowing users to control the door via smartphone apps or smart home systems. This level of integration is becoming increasingly popular, providing an additional layer of convenience for modern households.

In conclusion, the Sears 139.53930D delivers a robust and secure solution for garage door automation. With its powerful motor, advanced safety features, easy installation, and compatibility with smart technology, it represents a formidable choice for homeowners looking to enhance their garage door system. As the trend towards home automation continues to grow, this model stands out as a reliable and efficient option.
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