Sears 139.53627SRT, 139.53636SRT, 139.53641SRT To Adjust the Forces, Test the UP open force

Page 29

Adjustment Step 2

Adjust the Force

Force adjustment controls are located on the right side panel 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.

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.

Force Adjustment

Controls

000

Right Side Panel

How and When

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-inch obstruction. 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'tstop, decrease UP (open) force by turning the control counterclockwise.

to 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 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
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A SearsMechanical Electrical Start by reviewing these important safety alert symbolsInstallation Section pages 11 Youll Need Tools IArm One-Piece Door with Track One-Piece Door without TrackBefore you begin, survey your garage area to Closed PositionOpener Carton inventory EndsectionsInstallation Hardware Assembly HardwareSafety Reversing InstallationAssembly Step Assembly Section Pages 8Install the Trolley on the T-rail Assembly StepFasten the T-rail to the Opener Hardware Shown Actual SizeTo make Sure the chain is not LinkBar FigureTwisted To attach the sprocket coverTighten the Chain & Cable Important Installation InstructionsRemember Proceed to ,One-piecedoor without track Pivot hardware One-piecedoor without track jamb hardwareInstall the Header Bracket Installation StepFasten the Header Bracket to the Wall Fasten the Header Bracket to the CeilingAttach the T-rail to the Header Bracket Position the Opener Tro, yHang the Opener Two representative installations are shownNstallation Step See Safety Reversing Sensor Instructions beginning on Install the Deluxe Lighted Console Wall ControlOutdoor Key Switch Accessory Connections Clearly, and there are no obstructions to door travelInstall the lights Install the Lights and the LensesInstall the lenses Attach Emergency Release Rope HandleElectrical Requirements WiringConnections PermanentFacing the door from inside the garage Safety Reversing SystemAlternate Floor Mount Install the Safety Reversing SensorPush Connector Wire Connector Until You hear a click Trouble ShootingFasten Door Bracket Finished Ceiling Hole Alignment Alternative Connect Door Arm to TrolleyAssemble the Door Arm Adjustment Procedures for One-Piece DoorsDecrease UP limit Connect the door arm to the trolleyAdjust the UP and Down Limits Adjustment Section Pages 28 Adjustment StepTo Adjust the Limits How and WhenTo Adjust the Forces Adjust the ForceTest the UP open force If the door doesnt open at least 5 feetImportant safety check Test The Safety Reversing SensorTest the Safety Reverse System Remote control battery MaintenanceDispose of your old battery properly Care of Your OpenerOperation of the Deluxe Lighted Console Wall Control Operation of Your OpenerMini 3-Function Remote Control Receiver and Remote Control ProgrammingTo Add a Remote Control To Erase All Remote control CodesSituation Probable Cause and Solution Having a Problem?Door opens but SituationProbable Cause & SolutionInstallation Parts Repair Parts1918 Opener Assembly PartsAccessories Index For the location of a For the repair or replacement parts you need
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