Adjustment Step t

Adjust the UP and DOWN Travel

Limits

Limit adjustment settings regulate the points at which the door will stop when moving up or down.

To operate the opener, press the Door Control push bar. Run the opener through a complete travel cycle.

, Does the door open and close completely?

•Does the door stay closed and not reverse unintentionally when fully closed?

If your door passes both of these tests, no limit adjustments are necessary unless the reversing test fails (Adjustment Step 3, page 29)

Adjustment procedures are outlined below. Read the procedures carefully before proceeding to Adjustment Step 2 Use a screwdriver to make limit adjustments. Run the opener through a complete travel cycle after each adjustment.

NOTE: Repeated operation of the opener during adjustment procedures may cause the motor to overheat and shut off Simply wait 15 minutes and try again ff 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 LIMITS

°ff the door does not open completely but opens at least five feet (1.5 m):

Increase up travel Turn the UP fimit adjustment screw clockwise, One turn equals 2" (5 cm) of travel,

NOTE: To prevent the trolley from hitting the cover protection bolt, keep a minimum distance of

2-4" (5 cm - 10 cm) between the trolley and the bolt,

•ff door does not open at least 5 feet (1.5 m):

Adjust the UP (open) force as explained in Adjustment Step 2

•ff the door does not close completely: Increase down travel Turn the down Fimit

adjustment screw counterclockwise, One turn equals 2" (5 cm) of travel,

If door still won't close completely and the trolley bumps into the pulley bracket (page 4), try lengthening the door arm (page 25) and decreasing the down limit

•ff the opener reverses in fully closed position: Decrease down travel, Turn the down limit adjustment screw clockwise, One turn equals 2" (5 cm) of travel

Without a properlyinstalledsafetyreversalsystem, persons(particularlysmall children) could be

SERIOUSLYINJUREDor KILLEDby a closinggarage door

-Incorrectadjustmentof garagedoor travel limits wilt interferewith properoperationof safetyreversal system,

-if onecontrol (force or travel limits) is adjusted,the other control mayalso needadjustment

•AfterANYadjustmentsaremade,the safetyreversal system MUSTbetested Door MUSTreverseon contactwith 1-1f2"high (3,8 cm) object(or 2x4 laid fiat) on floor

CAUTION ]

To preventdamageto vehicles,be sure fully opendoor ]

providesadequateclearance

Cover Prolectlon Bolt

I	V
Lell Side Panel	Umil Adfuetmenl
	Screws

ADJUSTMENT IJ_BEL

ffthe door reverses when closing and there is no visible interference to travel cycle:

if the opener lights are flashing, the Safety Reversing Sensors are either not installed, misafigned, or obstructed. See Troubleshooting, page 22

Test the door for binding: Pull the emergency release handle. Manually open and close the door. If the door is binding or unbalanced, call for a trained door systems technician tf the door is balanced and not binding, adjust the DOWN (close) force. See Adjustment Step 2.

139.53920D specifications

The Craftsman 139.53920D is a versatile and robust garage door opener, designed to provide both convenience and security to homeowners. Known for its reliability and advanced features, this model stands out in the competitive market of garage door openers.

One of the key features of the Craftsman 139.53920D is its powerful motor. With a lifting capacity suitable for most standard garage doors, it boasts a 1/2 horsepower motor that delivers the strength necessary to open and close heavy garage doors effortlessly. This ensures a smooth and quiet operation, minimizing noise disruptions, which is especially valuable for homes with living spaces above or adjacent to the garage.

In terms of technology, the Craftsman 139.53920D incorporates a range of advanced features aimed at enhancing user experience. It comes equipped with Craftsman's proprietary Triband technology, which operates on three frequencies, providing increased range and improved signal reliability. This technology minimizes signal interference, ensuring that the opener responds quickly to your commands, whether you are close by or parked at the end of the driveway.

Safety is also a critical aspect of the Craftsman 139.53920D. The unit includes an automatic reverse feature that immediately stops and reverses the door's motion if it detects an obstacle in its path. This is vital in preventing accidents and ensuring the safety of children and pets. Additionally, the opener is compatible with the Security+ 2.0 system, which offers rolling code technology that changes the access code each time the remote is used, adding an extra layer of security against unauthorized access.

Installation of the Craftsman 139.53920D is user-friendly, with clear instructions provided and all necessary hardware included. The unit can accommodate various garage door styles, making it a flexible choice for different homeowners.

Furthermore, the Craftsman 139.53920D offers smartphone compatibility through the Craftsman smart app, allowing users to control their garage door from anywhere, receive real-time alerts, and even monitor the status of the door remotely. This feature makes it easier than ever to ensure that your garage is secure, even when you're not at home.

In summary, the Craftsman 139.53920D is an excellent choice for homeowners seeking reliability, advanced technology, and convenient features in a garage door opener. Its blend of power, safety mechanisms, and smart technology makes it a standout option for enhancing home security and convenience.

Craftsman 139.53920D owner manual Adjustment Step t, Adjust the UP and Down Travel Limits

Models: 139.53920D