ADC 450428 service manual

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NOTE: Models manufactured as of 1998 are equipped with a manual reset hi-limit thermostat.

1. Discontinue electrical power to the dryer.

2. Disconnect wires from hi-limit thermostat.

3. Remove the two (2) screws, washers, and nuts securing thermostat to the bracket. Remove thermostat.

4. Reversing procedure for installing new thermostat.

5. Reestablish electrical power to the dryer.

To Replace Manual Reset Tumbler Hi-Heat Protector (225º F [107º C]) Thermostat

This thermostat is part of the “sensor bracket assembly” and is secured to the underside of the tumbler (basket) wrapper in the lint compartment. As a safety device, this thermostat will open (shut off) the heating unit circuit if an excessive temperature occurs. The dryer motor will remain on, even if the thermostat is open.

IMPORTANT: UNDER NO CIRCUMSTANCES should heat safety devices be disabled.

1. Disconnect electrical power to the dryer.

2. Remove lint drawer. Remove two (2) screws securing lint door and remove lint door.

3. Locate sensor bracket assembly and loosen the two (2) Phillips head screws securing bracket assembly to the tumbler (basket) wrapper.

NOTE: DO NOT remove the screws.

4.Remove bracket assembly by slightly sliding bracket towards the rear of the dryer and to the left.

5.Disconnect sensor bracket harness connector and remove bracket assembly from dryer.

6.Disconnect the two (2) “orange” wires from thermostat.

7.Disassemble thermostat from bracket assembly by removing the two (2) mounting screws, washers, and nuts.

8.Reverse this procedure for installing a hi-heat protector thermostat.

9.Reestablish electrical power to the dryer.

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Contents ML-130 American Dryer CorporationRetain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Content Phase 6 OPL System Diagnostics Safety Precautions Important InformationStandards MATERIALS, GASOLINE, and Their Flammable Vapors Routine MaintenanceCleaning Adjustments LubricationElectrical and GAS Requirements Installation RequirementsENCLOSURE, AIR SUPPLY, and Exhaust Requirements Operational Service Check Procedure Page Drive Motor Description of PartsControl BOX HSI HOT Surface Ignition Module Gas Models OnlyBlower Motor and Impellor GAS Burner AssemblyIdler Assembly Tumbler Basket Main Door SwitchTumbler Basket Bearing and Pulley Arrangement HI-LIMIT Gas and Electric Models Only Sail Switch Gas and Electric Models OnlyManual Reset Thermostat Steam Damper System Lint Drawer SwitchLint Drawer Computer Controls ServicingIntroduction To Replace Computer Control PanelTo Replace Computer To Replace Keyboard Touchpad Label AssemblyTo Replace Microprocessor Temperature Sensor Probe Ignition Controls To Remove Hot Surface Ignitor refer to illustration aboveTo Remove Flame Sensor Probe HSI Ignitor Flame Sensor ProbeTo Test and Adjust Gas Water Column Pressure To Replace Main Burner OrificesTo Convert from Natural Gas to L.P. Gas Thermostats To Replace Burner TubesTo Replace HSI Hot Surface Ignition Module Page To Adjust Sail Switch Sail Switch Assembly Gas and Electric Models OnlyTo Replace Sail Switch Personal Injury or Fire could ResultTo Replace Main Door Assembly To Install New Main Door GlassTo Replace Front Panel To Replace Main Door Hinge BlockTo Replace Small Idler Pulley PulleysTo Replace Tumbler Basket Pulley To Replace Large Idler Pulley To Replace Motor PulleyTumbler Basket Assembly Tumbler Basket Alignment Vertical Up and Down AdjustmentTumbler Basket Alignment Lateral Side to Side Adjustment To Replace Tumbler Basket or Tumbler Basket SupportTo Replace Front Tumbler Basket Support Pillow Block Bearing To Replace Front Idler Shaft Pillow Block Bearing To Replace Rear Idler Shaft Pillow Block BearingBelts Belt Tension Adjustment Tumbler Basket to IdlerBelt Tension Adjustment Motor to Idler To Replace V-BeltsTo Replace Impellor Motor Fan Shaft Drive MotorsTo Replace Drive Motor Impellor Lint Drawer Assembly To Replace Lint ScreenTo Replace Lint Drawer Switch Computer will not accept keyboard touchpad entries TroubleshootingNo display on computer Dryer will not start, but computer display indicators are on Dryer operates but is taking too long to dryOverload for impellor fan motor is tripping Burner hi-limit safety thermostat is trippingThermal overload for drive motor is tripping There is excessive vibration coming from the tumbler basket Phase 6 OPL System Diagnostics Diagnostic L.E.D. light emitting diode Display Failure CodesPage E.D. light emitting diode Display Indicators E.D. Display Indicator NumberE.D. Display Indicator Number HT1 Heat Output L.E.D. Indicator FAN Blower Output L.E.D. IndicatorAIR AIR JET Output L.E.D. Indicator Optional Main Main Door Input L.E.D. Indicator Fuse Main Fuse Input L.E.D. IndicatorLint Lint Door Input L.E.D. Indicator Flame bURNER Control Fail Input L.E.D. Indicator Power Supply Input L.E.D. IndicatorE.D. Codes 1. Display Codes ALL REVGAS only Ignition Attempt Failure GAS Models only Power 24 VAC is not Evident AT GAS ValveGAS/ELECTRIC only BURNER/OVEN Open HI-LIMIT Circuit Computer Logic and Wiring Diagram Page No Display Condition Drive motor reverses but does not forward, blower motor runsBlower motor does not operate, drive motor runs Lint Door ConditionMain Door Condition Microprocessor ComputerManual Reset HI-LIMIT Instructions For Phase 6 ModelsTechnical Information Motor Plate High and LOW VoltageData Label Information on the Data LabelHOW to USE a Manometer Tool List ADC450428 1- 02/22/00-25