Craftsman 139.53677SRT1, 139.53671SRT1, 139.53674SRT owner manual How and When to Adjust the Forces

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Adjustment Step 2

Adjust the Force

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 stops in the up direction. 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.

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WARNING

I

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 iL 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.

Backpanel of

dooropener "Force

\

Aduslmlmt

How and When to Adjust the Forces

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 one-inch obstruction. See page 30. If the door is hard to hold or doesn'treverse, 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'tstop,

decrease UP (open) force by tuming the control counterclockwise.

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 least 5 feet

Increase UP (Open) force by turning the control clockwise. Make 10 degree turn adjustments until 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't flashing

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 Craftsmrn Adjustment section pages ContentsTest the safety Operation safety InstructionsYoull Need Tools Finished Ceiling Center of the door. See pages 12One-Piece Door With Track One-Piece Door Without TrackClosed Position Isaor sigt P,ele=se GarageSecurity+ Carton InventorySquaHo t2 Sk2Safety Reversing Sensor Installation Hardware Installation HardwareAssembly Step Assembly Section Pages 8Omenlo Sas Assemble the T.rail & Attach Cable Pulley BracketCover \ Assembly StepFasten the T-rail to the Opener Use the second master link to connect Install Chain/Cable Attach Sprocket CoverChain to the flat end of the shaft Check to make sure the chain IsTighten the Chain & Cable Assembly StepProceed to , Installation Section Pages 12 Installation StepDetermine Header Bracket Location Example Fasten Header Install the Header BracketBracket to the Wall Fasten the Header Bracket to the CeilingAttach the T-rail to the Header Bracket Installation StepPosition the Opener 0SH=OCSlU,G Hang the OpenerHardware Shown Install the Door ControlDryWaAnchom BackviewAttach Emergency Release Rope Handle Install the lensInstall the Light and the Lens Electrical Requirements Permanent Wiring ConnectionsFacing the door from inside the garage Safety Reversing SystemLag St=paB Install the Safety Reversing SensorAlternate Wall Mount WithSlot Alternate Floor MountHI,II,l,l,IliiI,%I,I,I,I,D =deEd Figure TTIJ.etc-,Pr IgureFasten Door Bracket LockWashe 5/6 Hole Alignment Same way, using the 5/16 x I 1/4 clevis pinConnect Door Arm to Trolley OoorAssembletheDoorArm Adjustment Procedures for One-Piece DoorsHow and When to Adjust the Limits Adjustment Section Adjustment StepAdjust the UP and Down Limits Pages 28Adjust the Force How and When to Adjust the ForcesTest the Safety Reverse System Important safety checkTest The Safety Reversing Sensor To reduce the risk of severe Maintenance ScheduleCare of Your Opener Operation of Your Opener Lock featureLock feature is designed to Control Programming Receiver and RemoteRgure Securityi SECURITY,IProbable Cause and Solution Having a Problem?Remote control has short range Review the travel limits adjustment procedures onProbable Cause & Solution Having a Problem?Situation Door opens but wont closeRail Assembly Parts Repair PartsInstallation Parts Opener Assembly Parts Repair Parts18173 116For Sectional Doors Only AccessoriesIf you do not have a Premium Control Console If you have a Premium Control ConsoleProblems that might require force adjustments Access Door/Outside Key Release AccessoryManual Emergency Release Rope & Handle Lockout feature Safety wamings 11, 19 Opener Termlnals800473-7247 For in-home major brand repair servicePare obtener este Manual del Spanish Please ask
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