ADJUSTMENT STEP 2

Testthe SafetyReversalSystem

TEST

With the door fully open, place a 1-1/2" (3.8 cm) board (or a 2x4 laid flat) on the floor, centered under the garagedoor.

Operatethe 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. Complete Adjustment Step 1.

NOTE:On a sectional door, make sure limit adjustments do not force the door arm beyond a straight up and down position. SeeFigure 3, page 20.

Repeatthe test.

When the door reverses on the 1-1/2" (3.8 cm) board (or 2x4 laid flat), removethe obstruction and run the openerthrough 3 or 4 complete travel cycles to test adjustment.

If the unit continues to fail the Safety ReverseTest, call for a trained door systems technician.

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

Safety reversalsystem MUST betested every month.

After ANY adjustments are made,the safety reversalsystem MUST be tested. Door MUST reverse on contact with

1-1/2" (3.8 cm) high object (or 2x4 laid flat) on the floor.

L

IMPORTANTSAFETYCHECK:

Test the Safety ReverseSystem after:

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

Any repair to or adjustment of the garagedoor (including springs and hardware).

Any repair to or buckling of the garagefloor.

Any repair to or adjustment of the opener.

(or a 2x4 laid flat)

ADJUSTMENT STEP 3

Test The ProtectorSyster_

Pressthe remote control push button to open the door.

Placethe opener carton in the path of the door.

Pressthe remote control push button to close the door. The door will not move more than an inch (2.5 cm), and the opener lights will flash.

The garage door openerwill 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 closesthe door when the safety reversingsensor is obstructed(and the sensorsare no more than 6" (15 cm) above the floor), call for a trained door systemstechnician.

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

SafetyReversingSensor

Safety Reversing Sensor

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Craftsman 139.3043 owner manual Testthe SafetyReversalSystem, Test The ProtectorSyster, Adjust, Importantsafetycheck

139.3043 specifications

The Craftsman 139.3043 garage door opener stands out as a robust and reliable solution for homeowners looking to enhance the functionality and security of their garage spaces. This model is designed with the latest technologies and features, making it one of the preferred choices in the market.

One of the key features of the Craftsman 139.3043 is its powerful motor, which provides a smooth and quiet operation. With a lifting capacity that accommodates most standard residential garage doors, this opener ensures that users can operate their doors seamlessly without unnecessary noise. The blend of power and quiet functionality enhances the overall user experience, making it ideal for homes with bedrooms or living areas adjacent to the garage.

The opener also boasts a durable rail system, designed for easy installation and longevity. The straightforward design simplifies the installation process, enabling a typical DIY enthusiast to set it up without the need for professional assistance. Additionally, the sturdy construction of the rail system ensures that it can withstand the rigors of daily use.

Safety and security are paramount with the Craftsman 139.3043. It incorporates advanced safety features, such as the automatic reverse function, which prevents accidents by reversing the door's motion when an obstacle is detected. This feature adds peace of mind for families with children and pets. Furthermore, the built-in security technology includes a rolling code system that changes the access code each time the remote is used, thus protecting against potential unauthorized access.

The Craftsman 139.3043 is equipped with remote control capabilities, allowing users to open and close their garage doors from a distance. The remote is designed to be user-friendly, with buttons that are easy to operate. Additionally, many models include a smartphone app integration, empowering users to control their garage door via their mobile devices, providing convenience and modern accessibility.

Another notable characteristic is the vibrant LED lighting that illuminates the garage space when the door is in use. This not only enhances visibility but also contributes to the overall safety of the area, preventing accidents in dimly lit environments.

In summary, the Craftsman 139.3043 garage door opener combines power, ease of use, advanced safety features, and modern technology. Its reliable performance and user-friendly elements make it a top choice for homeowners seeking an effective solution to their garage door needs.