Craftsman 139.53664SRT2 owner manual Adjustment Step, How and When to Adjust the Forces

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Adjustment Step 2

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Adjust the Force

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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 reversein 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

Right Side Panel

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'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.

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 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'tflashing

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.

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 CRRFTSMIiN MechanicalElectricaL Start by Reviewing these Important Safety Alert SymbolsYoull Need Tools Closed Position Otherwise, the safety reverse system may notIt must close on the floor all the way across Work properly. See page 30. Floor or door shouldHardw&faSlsenlguired One-P ece Door without TrackOne-Piece Door with Track Carton Inventory Safety Reversing Sensor Installation Hardware Installation HardwareAssembly Step Assembly Section Pages 8Assemble the T-rail Attach the Belt Pulley Bracket Hardware Shown Actual SizeFasten the T-rail to the Opener Install the Trolley on the T-railCheck to make sure the belt is not twisted Install the Belt Set Belt TensionPlace To attach the belt cap retainer Attach the Belt Cap Retainer#youneed to install the header bracket Installation Section Installation StepPages 12 Proceed to ,Example One-piece door without track Jamb hardwareFasten the Header Bracket to the Wall Install the Header BracketFasten the Header Bracket to the Ceiling DoorHardware Shown Actual SizeShown Actual Size Attach the T-rail Header BracketPosition the Opener Is not properly secured. Fasten the opener Hang the OpenerOpener could fall and injure someone if it Install the Premium Control Console Install the lenses Install the Lights Lenses32 explains how to use the door control Install the lightsElectrical Requirements If permanent wiring is required by your localCode, refer to the following procedure Facing the door from inside the garage Safety Reversing SystemSensors will face each other across the garage door Install the Safety Reversing SensorFinger tighten the lock nuts Alternate Floor MountTrouble Shooting Aligning the Safety SensorsBracket Hodzontal and vertical reinforcement Fasten Door BracketScrewsnot provided Hole Alignment Alternative Connect Door Arm to TrolleyTogether to the longest possible length, with a 2 or Adjustment Procedures for One-Piece DoorsFasten the straight and curved door arm sections Adjust the UP and Down Limits Adjustment Section Pages 28How and When to Adjust the Limits If the door does not close completelyAdjust the Force Adjustment StepHow and When to Adjust the Forces Test the Down close forceTest the Safety Reverse System Test The Safety Reversing SensorImportant safety check AdjustmentTo reduce the risk of severe MaintenanceInjury or death to persons Care of Your OpenerOperation of the Door Controls Operation of Your OpenerIf you do not have a Premium Control Console Receiver and Remote Control ProgrammingIf you have a Premium Control Console Situation Having a Problem?Probable Cause and Solution Probable Cause & Solution Installation Parts Repair PartsRail Assembly Parts Opener Assembly Parts Repair PartsIf you do not have Premium Control Console AccessoriesFor Sectional Doors On12 Index Product Type Part Number Model Description 8OO-366-PART
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