Craftsman 139.53664SRT2 owner manual Probable Cause & Solution

Page 35

Situation

The door opens but won't close:

Having a Problem? (continued)

Probable Cause & Solution

1.If the opener lights blink, check the safety reversing sensor. See page 23.

2.If the opener lights do not I_link and it is a new installation, check the down force. See Adjustment Step 2, page 29. For an existing installation, see below.

Repeat the safety reverse test after the adjustment is complete•

The door reverses for

no apparent reason and opener lights don? blink:

The door reverses for no apparent reason and opener lights blink for 5 seconds after reversing:

The opener lights:

The opener strains or maximum force is

needed to operate door:

The opener motor

hums briefly, then won't work:

1.Is something obstructing the door? Pull the red emergency release handle. Operate

the door manually. If it is unbalanced or binding, call for professional garage door service.

2.Clear any ice or snow from the garage floor area where the door closes.

3.Review the force adjustment procedures on page 29.

4.If door reverses in the fullyclosedposition, decrease the travel limits (page 28).

Repeat safety reverse test after adjustments to force or travel limits• The need for occasional adjustment of the force and limit settings is normal• Weather conditions in particular can affect door travel•

Check the safety reversing sensor. Remove any obstruction or align the receiving eye. See page 23.

•..don't turn on:

Replace the light bulbs (75 watts maximum). Use a standardneckgarage door opener bulb if regular bulb burns out.

•..don't turn off:

Is the Light feature on? Turn it off.

The door may be out of balance or the springs are broken. Close the door and use the emergency release to disconnect the trolley. Open and close the door manually. A properly balanced door will stay in any point of travel while being supported entirely by itssprings. If it does not, disconnect the opener and call a professionalgarage door serviceman. Do not increase the force to operate the opener.

1.The garage door springs are broken. See above.

2.If the problem occurs on the first operation of the opener, door may be locked. Disable the doorlock. If the belt was removed and reinstalled, the motor may be out of phase. Remove the belt; cycle the motor to the down position. Observe the drive sprocket.

When it turns in a clockwise direction and stops in the down position, reinstall the belt. Repeat the safety reverse test after the adjustment is complete.

The opener won't operate due to

power failure:

The belt droops or sags:

1.Use the emergency release to disconnect the trolley. The door can be opened and closed manually. When the power is restored, press the Door Control push button and trolley will automatically reconnect (unless trolley is in lockout position.) See page 32.

2.The Emergency Key Release accessory (for use on garages with no service door) disconnects the trolley from outside the garage in case of power failure.

It is normal for the belt to droop slightly in the closed door position. Use the manual release rope and handle to disconnect the trolley. If no droop remains when the outer trolley is disengaged, no adjustments are needed.

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Contents CRRFTSMIiN MechanicalElectricaL Start by Reviewing these Important Safety Alert SymbolsYoull Need Tools Work properly. See page 30. Floor or door should Otherwise, the safety reverse system may notClosed Position It must close on the floor all the way acrossHardw&faSlsenlguired One-P ece Door without TrackOne-Piece Door with Track Carton Inventory Safety Reversing Sensor Installation Hardware Installation HardwareHardware Shown Actual Size Assembly Section Pages 8Assembly Step Assemble the T-rail Attach the Belt Pulley BracketFasten 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 RetainerProceed to , Installation Section Installation Step#youneed to install the header bracket Pages 12Example One-piece door without track Jamb hardwareDoorHardware Shown Actual Size Install the Header BracketFasten the Header Bracket to the Wall Fasten the Header Bracket to the CeilingShown 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 lights Install the Lights LensesInstall the lenses 32 explains how to use the door controlElectrical Requirements If permanent wiring is required by your localCode, refer to the following procedure Facing the door from inside the garage Safety Reversing SystemAlternate Floor Mount Install the Safety Reversing SensorSensors will face each other across the garage door Finger tighten the lock nutsTrouble 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 If the door does not close completely Adjustment Section Pages 28Adjust the UP and Down Limits How and When to Adjust the LimitsTest the Down close force Adjustment StepAdjust the Force How and When to Adjust the ForcesAdjustment Test The Safety Reversing SensorTest the Safety Reverse System Important safety checkCare of Your Opener MaintenanceTo reduce the risk of severe Injury or death to persons Operation 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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