Installation

Step 10

Sensor

I

the Safety

Reversing

 

INSTALLING THE BRACKETS

Be sure power to the opener is disconnected.

Install and align the brackets so the sensors will

face each other across the garage door, with the beam from 4 - 6" above the floor.

They may be installed in one of three ways, as follows.

Garage door track installation (preferred):

•Slip the curved arms over the rounded edge of each door track, with the curved arms facing the door. Snap into place against the side of the track. It should lie flush, with the lip hugging the back edge of the track, as shown in Figure 2.

If your door track will not support the bracket securely, wall installation is recommended.

Wall installation:

•Place the bracket against the wall with curved arms facing the door. Be sure there is enough clearance for the sensor beam to be unobstructed.

•If additional depth is needed, an extension bracket (see Accessories) or wood blocks can be used.

•Use bracket mounting holes as a template to locate and drill (2) 3/16" diameter pilot holes on the wall at each side of the door, from 4-6" above the floor. (See warning at beginning of Installation

Step 10.)

•Attach brackets to wall with lag screws (not provided).

•If using extension brackets or wood blocks, adjust right and left assemblies to the same distance out

from the mounting surface. Make sure all door hardware obstructions are cleared.

Floor installation:

•Use wood blocks or extension brackets (see Accessories) to elevate sensor brackets so the lenses will be 4-6" above the floor.

•Carefully measure and place right and left assemblies at the same distance out from the wall.

Be sure all door hardware obstructions are cleared.

•Fasten to the floor with concrete anchors as shown.

Hardware Shown Actual Size

1/4"-20x1/2" (2) Wing Nut 12) Insulated Staples (20)

Figure 2 DOOR TRACK MOUNT (Right Side)

•Track

',DoorUp

Indicator

light

Bracket

Figure 3 WALL MOUNT (Right Side)

Extension

Bracket

(See Accessories)

I_ (Provided with

Extension

 

 

 

_nsor

 

 

, ,;racket

(Provided with

Lens

light

Extension

Bracket)

 

 

Figure 4

FLOOR

MOUNT (Right

Side)

Lerls

 

indicator

 

Sensor

 

tight

 

Bracket

 

(Provided with

 

 

 

 

ExtensionBracket)

 

 

 

Attach w_h

 

 

--

concrete anchors

 

 

 

(not provided)

Extension

_.._Exlension

Bracket

(See Accessories)

22

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Craftsman 139.53978SRT Sensor Safety Reversing, Installing the Brackets, Be sure power to the opener is disconnected
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139.53978SRT specifications

The Craftsman 139.53978SRT is an advanced garage door opener that combines reliability, performance, and ease of use. Designed to cater to the needs of modern homeowners, this model stands out with its robust features and technological innovations.

One of the key highlights of the Craftsman 139.53978SRT is its powerful motor, delivering a peak horsepower equivalent to ensure smooth and efficient operation. This allows it to effortlessly lift even the heaviest of garage doors, making it suitable for various types of residential garage doors. The quiet operation of this opener is another major advantage, allowing for a peaceful environment in and around the garage.

Another notable feature is the smart technology integration. The Craftsman 139.53978SRT is compatible with a range of smart home systems, allowing users to control their garage door remotely via a smartphone app. This feature not only adds convenience but also enhances security, as users can receive alerts and notifications about the status of their garage door, ensuring peace of mind.

Security is a priority with this model, which comes equipped with rolling code technology. This mechanism generates a new code each time the remote is used, preventing unauthorized access and ensuring that your garage remains secure from intruders. Additionally, the enhanced safety features include safety sensors that detect obstacles, automatically reversing the door's movement if something is detected, thereby preventing accidents.

Installation and setup are straightforward, thanks to the user-friendly design of the Craftsman 139.53978SRT. The unit includes detailed instructions and all necessary hardware for installation. Many users can set it up within a few hours without the need for professional assistance.

With a durable construction, the Craftsman 139.53978SRT is built to last. It has a sleek design that complements various home aesthetics while withstanding wear and tear from daily use. Maintenance is minimal, with easy access to essential components for servicing.

In summary, the Craftsman 139.53978SRT offers a perfect blend of power, technology, and security features. Its user-friendly design, combined with smart technology compatibility and robust safety measures, makes it an ideal choice for homeowners seeking a reliable garage door opener. Whether you’re looking to upgrade an old system or install a new one, this model is sure to meet your requirements and enhance the functionality of your garage.
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