Craftsman 139.53335SRT3 How and When to, Adjust the Forces, Test the Down close force

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Adjustment Step 2

I

Adjust the Force

I

 

Force adjustment controls are located on the back )anel of the opener. Force adjustment settings

regulate the amount of power required to open and close the door.

The door will stop in the up direction if anything interferes with its travel. The door will reverse in the down direction if anything interferes with its travel (including binding or unbalanced doors).

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

The maximum force adjustment range is 260 degrees, about 3/4 of a complete turn. Do not force controls

beyond that point. Turn force adjustment controls with a screwdriver.

Adjustment Label

Too much force on the door will interfere with the proper operation of the safety reverse system. The door might not reverse properly

when required and could seriously injure or kill someone under it. Do not increase the force

beyond the minimum amount required to close the door. Do not use the force adjustments to compensate for a binding or sticking garage door. Test the safety reverse system following all adjustments to force levels. See page 30.

Back panel of

door opener

Force

Ad}ustment

Control

How and When to

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 two-inchobstruction. See page 30. If the door is hard to hold or doesn't reverse, decrease the DOWN (close) force by turning the control counterclockwise.

Make 10 degree turn adjustments until the door reverses normally. After each adjustment, run the opener through a complete cycle.

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.

Adjust the Forces

Make 10 degree turn adjustments until the door stops easily. After each adjustment, run the opener through a complete travel cycle.

If the door doesn't open at least5 feet

Increase UP (Open) force by turning the control clockwise. Make 10 degree turn adjustments untit door opens completely. Re-adjust the UP limit if necessary. After each adjustment, run the opener through a complete travel cycle.

If the door reverses during the down (close) cycle and the opener lights aren'tflashing

Increase DOWN (close) force by turning the control clockwise. Make 10 degree turn 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.

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Contents Craftsman Start by reviewing these important safety alert symbols YoullNeed Tools Closed Position Sectional Door InstallationOne-Piece Door With Track ONE-PIECE Door Installation One-PieceDoor Without TrackTO your Installation Carton Inventory Wit w edT oHardware Installation HardwareSafety Reversing Sensor Installation Assemble the T-rail & Attach Cable Pulley Bracket Assembly Section Pages 8Operation,noiseand/or RightWrong Hardware Shown Actual SizeHardware Shown Install the Trolley on the T-railActual Size Fasten Raft to OpenerMasterFigure Assembly StepInstall the Chain/Cable Attach the Sprocket Cover Tighten the Chain & Cable Trolley before adjusting chainIll AbovethedoorIF1 --L--Ji One-piece door without track Pivot hardware One-piece door without track Jamb hardwareFasten the Header Bracket to the Ceiling Install the Header BracketFasten the Header Bracket to the Wall Attach the T-rail to the Header Bracket Sectional Door & ONE-PIECE Door with Track Position the OpenerHang the Opener L!LIDo not connect to live electrical wiring. Connect Install the Door ControlDoor Control Button Fasten securely with 6ABx1-1/2 screws IllllllllltllllllllllllAttach the Emergency Release Rope and Handle Install the Light and the Lens32 explains how to use the door control RightWrong Permanent Wiring ConnectionsElectrical Requirements Facing the door from inside the garage Safety Reversing SystemRight sides of the door Finger tighten the lock nuts Install the Safety Reversing SensorShown Actual Size Alternate Wall MountTrouble Shooting Fasten Door Bracket IIIIIII!!11111!111II!!l!ll!!!lLllllllllllllllI!l!l!l SEC!ONA DoorS Oniy Connect Door Arm to TrolleyHole Alignment AlternativeOpen Door Adjustment Decrease UP limit Adjustment Procedures for One-PieceDoorsClosed Door Adjustment Decrease Down limit Assemble the Door ArmTo Adjust the Limits Adjustment Section Adjustment StepAdjust the UP and Down Limits Pages 28How and When to Adjust the ForceAdjust the Forces Test the Down close forceTest The Safety Reversing Sensor Adjustment StepTest the Safety Reverse System Must reverse on striking the obstructionTo reduce the risk of severe injury or death to persons MaintenanceCare of Your Opener ScheduleLockout position Operation of Your Opener53000SRT Series Garage Door Openers Receiver and Remote Control ProgrammingSituation Having a Problem?Probable Cause and Solution Probable Cause & Solution Having a Problem?Installation Parts Repair PartsWie \Fr Opener Assembly PartsAccessories Index For in-home major brand repair service For the repair or replacement parts you needGive the following information Product Type Part Number Model Number Part Description

139.53648SRT2, 139.53645SRT3, 139.53834SRT3, 139.53335SRT3, 139.53646SRT2 specifications

The Craftsman 139.53660SRT1, 139.53646SRT2, 139.53335SRT3, 139.53834SRT3, and 139.53645SRT3 are a series of advanced garage door openers designed for homeowners looking to enhance convenience, security, and functionality in their daily lives. Each model is equipped with cutting-edge technologies that streamline garage access while ensuring safety and durability.

One of the standout features across these models is the use of a powerful motor system, providing reliable performance for heavy garage doors. The motor's horsepower rating varies across the models, but all ensure consistent lifting strength and rapid opening and closing speeds, catering to different door weights and sizes.

In terms of security, these Craftsman models incorporate advanced encryption technologies, making unauthorized access nearly impossible. The security features include rolling code technology, which changes the access code each time the remote is used, thus preventing cloning and ensuring that only authorized users can operate the door.

These openers also prioritize ease of use. With their compatible smartphone app integration, users can remotely control and monitor their garage doors. Whether they are at home or away, users can receive notifications, check the status of their doors, and even open or close them at the touch of a button, adding an extra layer of convenience.

The installation process is also user-friendly, with many of these models featuring an easy-to-follow instruction manual. Homeowners can typically complete the installation themselves, saving time and money compared to hiring a professional. The durable construction of these openers ensures that they withstand the test of time, with many units equipped with weather-resistant materials that protect against rust and corrosion.

In addition to their functional features, the aesthetic designs of the Craftsman series are noteworthy. They fit seamlessly into a variety of garage styles, with a sleek finish that enhances overall garage appeal.

Overall, the Craftsman 139.53660SRT1, 139.53646SRT2, 139.53335SRT3, 139.53834SRT3, and 139.53645SRT3 garage door openers represent a blend of functionality, security, and user convenience. Homeowners seeking reliable, smart, and efficient solutions for managing their garage doors will find these models highly effective, offering peace of mind and ease of use in their everyday lives.
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