Craftsman 139.53978SRT owner manual Adjustment Procedures for One-Piece Doors

Page 27

Assemble the Door Arm:

• Fasten the straight and curved door arm sections

together to the longest possible length (with a 2 or

DoorRing

Lock

Nuts

3 hole ovedap).

• With the door closed, connect the straight door arm

section to the door bracket with the 5/16"xl-1/4"

clevis pin.

• Secure with a ring fastener.

Washers 5/16"-18

5/16"

Clevis Pin Straight

5/16"x1-1/4" Arm

Screws

5/16"-18x7/8

Door Ann

On one-piece doors, before connecting the door arm to the trolley the travel limitsmust be adjusted. Limit adjustment screws are located on the left side panel as shown on page 28. Follow adjustment procedures below.

FULLYCLOSED POSITION

Inner Tro_lay OuterTrolley

FULLY OPEN POSITION

 

 

Outer Trolley

Clo_ed

_.___._."

 

Open Door

Doorwith

Door Arm

!

Backward Slant

 

Adjustment Procedures for One-Piece Doors

Open Door Adjustment:

Decrease UP limit

•Turn the UP limit adjustment screw counter- clockwise 5-1/2 turns.

•Press the Door Control push bar or button. The trolley will travel to the fully open position.

•Manually raise the door to the open position (parallel to the floor), and lift the door arm to the trolley. The arm should touch the trolley just in back of the door arm connector hole. Refer to the fully open trolley/door arm positions in the illustration. If the arm does not extend far enough, adjust the limit further. One full turn equals 2" of trolley travel.

Closed Door Adjustment:

Decrease DOWN limit

•Turn the DOWN limit adjustment screw clockwise 5 complete tums.

•Press the Door Control push bar or button. The trolley will travel to the fully closed position.

•Manually close the door and lift the door arm to the trolley. The arm should touch the trolley just ahead of the door arm connector hole. Refer to the fully closed trolley/door arm positions in the illustration. If the arm is behind the connector hole, adjust the limit further. One full turn equals 2" of trolley travel.

Connect the door arm to the trolley.

•Close the door and join the curved arm to the connector hole in the trolley with the remaining clevis pin. It may be necessary to lift the door slightly to make the connection.

•Secure with a ring fastener.

•Run the opener through a complete travel cycle. If the door has a slight "backward" slant in full open position as shown in the illustration, decrease the UP limit until the door is parallel to the floor.

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Contents Garage Door Opener Instructions. Read the instructions carefully Start by reviewing these important safety alert symbolsYoull Need Tools Safety Based on your particular requirements, there areClosed Position One-Piece Door with Track One-Piece Door without TrackClosed Position Section Carton Inventory@ @ Safety Reversing SensorAssembly Step Assembly Section Pages 8Install the Idler Pulley Fasten the Rail to the OpenerHardware Shown Actual Size Master Link Clip-OnSpdng Unk Cap Install the Chain/Cable Attach the Sprocket Cover= Lo Tro,.y Tighten ChainInstallation Section Pages 12 Installation Step Determine Header Bracket LocationProceed to , Example One-piece door without track Jamb hardwareInstall the Header Bracket Wall Header Bracket InstallationCeiling Header Bracket Installation Insert a ring fastener to secure Attach the Rail to the Header BracketWith the door fully open and parallel to the floor Position the OpenerHang the Opener Installation StepShown Actual Size UihJIlnJIlilililil Ililn Install the Door ControlSlide down to secure. Adjust screw for snug fit Serious injury or deathAttach the Emergency Release Rope and Handle Install the Light and the LensInstall the light Install the lensPermanent Widng Connections Electrical RequirementsRightWrong Important Information about Safety Reversing Sensor Safety Reversing SystemGarage door track installation preferred Sensor Safety ReversingInstalling the Brackets Be sure power to the opener is disconnectedMounting and Wiring the Safety Sensors Aligning the Safety SensorsTrouble Shooting the Safety Sensors Fasten Door Bracket IIIIIlllillllILllllllllllllllllNut IIIIIII11111111LLLIIIIIlIConnect Door Arm to Trolley RBokAbove holes Adjustment Procedures for One-Piece Doors Adjustment Step If the door does not close completely Adjustment Section Pages 28 Adjustment StepHow and When to Adjust the Limits Adjust the UP and Down LimitsHow and When to Adjust the Forces Adjust the ForcePress the remote control push button to open the door Test The Safety Reversing SensorTest the Safety Reverse System Important safety checkMaintenance To reduce the risk of severe injury or death to personsSchedule Operation of Your Opener Operation of the Door Control seeManual disconnect Position SECURITY,I Receiver and Remote Control ProgrammingIf you have a Premium Control Console If you do not have a Premium Control ConsoleSituation Probable Cause and Solution Having a Problem?Doesnt turn off Situation Probable Cause SolutionDoor opens but Opener lights blink for 5 secondsRepair Parts Rail Assembly PartsInstallation Parts Br co.tact ASSEMe,v Opener Assembly PartsWith the door closed AccessoriesOnly through Sears Parts & Service For Sectional Doors OnlIndex For in-homemajor brand repair service Sears WarrantyPara ordenar piezas con entrega a domicilio

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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