American Dryer Corp ML-170 Description of Parts, Control Panel Microprocessor, Control BOX

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SECTION IV

DESCRIPTION OF PARTS

A. CONTROL PANEL (MICROPROCESSOR)

Opening the control panel will allow access to the major components which include the microprocessor computer board and the keyboard (touchpad). The keyboard (touchpad) inputs to the computer what temperature and program has been selected. The computer controls the entire operation of the machine. It accepts inputs and gives outputs to various parts throughout the machine.

B. CONTROL PANEL (NON-MICROPROCESSOR)

On models without microprocessors, a timer is used to set a specific time. Most non- microprocessor machines are built with dual timers, a 60 minute dry timer and a 15 minute cool down timer. The temperature selector switch selects the “Hi,” “Perm Press,” or “Lo Temp.” The “Push to Start” relay activates the machine which starts the drying cycle.

C. CONTROL BOX

Opening the computer panel will reveal the control box. Inside the control box are connectors for various harnesses traveling throughout the machine. Located on the back of the control panel is the computer.

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Contents ML-145 / ML-170 American Dryer CorporationRetain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Content Section Technical Information Safety Precautions Important InformationStandards Routine Maintenance CleaningAdjustments LubricationElectrical and GAS Requirements Installation RequirementsENCLOSURE, AIR SUPPLY, and Exhaust Requirements Operational Service Check Procedure Gas 10.5 inches water column 26.1 mb Control Panel NON-MICROPROCESSOR Description of PartsControl Panel Microprocessor Control BOXGas Models only GAS Burner AssemblyHSI HOT Surface Ignition Module Drive MotorTumbler Basket Bearing and Pulley Arrangement Idler AssemblyBlower Motor and Impellor GAS and Steam Tumbler Basket Main Door SwitchSail Switch Gas Models only Lint Drawer Automatic Reset ThermostatHI-LIMIT Gas Models only Steam Damper System Lint Drawer SwitchTemperature Sensor Bracket NON-COMPUTER Compressed AIR RequirementsComputer Controls ServicingIntroduction To Replace ComputerTo Replace Keyboard Touchpad Label Assembly To Replace Microprocessor Temperature Sensor ProbeTo Replace Gas Valve Refer to above burner illustration To Remove Flame Probe AssemblyIgnition Controls To Test and Adjust Gas Water Column Pressure To Replace Main Burner OrificesTo Convert from Natural Gas to L.P. Gas To Replace Burner TubesTo Replace Burner Hi-Limit Thermostat Gas Models Only To Replace HSI Hot Surface Ignition ModuleThermostats Sail Switch Assembly Gas Models only To Replace Sail SwitchTo Adjust Sail Switch To Replace Main Door AssemblyTo Install New Main Door Glass To Replace Front PanelTo Replace Tumbler Basket Pulley To Replace Main Door Hinge BlocksPulleys To Replace Small Idler Pulley To Replace Large Idler PulleyTo Replace Motor Pulley Tumbler Basket AssemblyTumbler Basket Alignment Vertical Up and Down Adjustment Tumbler Basket Alignment Lateral Side to Side Adjustment To Replace Tumbler Basket or Tumbler Basket SupportImportant Never strike the shaft directly with a hammer To Replace Front Tumbler Basket Support Pillow Block Bearing To Replace Front Idler Shaft Pillow Block BearingBelts Refer to illustrations in section F Pulleys Belt Tension Adjustment Tumbler Basket to IdlerTo Replace Rear Idler Shaft Pillow Block Bearing Motors Belt Tension Adjustment Motor to IdlerTo Replace V-Belts To Replace Drive MotorImpellor Lint Drawer Assembly To Replace Lint Screen To Replace Lint Drawer SwitchTroubleshooting Computer will not accept keyboard touchpad entriesDisplay is reading Rotation Sensor Fail Display is reading no AirflowDisplay is reading Burner Safety Fail Display is reading Sail Switch FailDisplay is reading Drum Safety Fail Display is reading No HeatDisplay is reading Main Door Display is reading Burner Control FailureDisplay is reading Burner Flame Failure Display is reading Lint DoorThermal overload for drive motor is tripping Display is reading HotDryer operates but is taking too long to dry Overload for impellor fan motor is tripping There is excessive vibration coming from the tumbler basketElectrical Troubleshooting 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. light emitting diode 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 Drum Tumbler Basket HI-LIMIT Input L.E.D. IndicatorFlame bURNER Control Fail Input L.E.D. Indicator Power Supply Input L.E.D. IndicatorD. DISPLAY/CODES E.D. Display Operating StatusPhase 6 OPL Microprocessor L.E.D. Displays E.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 No Display Condition Blower motor does not operate, drive motor runs No Heat Drive and Blower Motors Run Gas Models No Heat Drive and Blower Motors Run Steam ModelsDoor Condition Technical Information Motor Plate High and LOW VoltageData Label Information on the Data LabelUsing a Manometer How to Use a ManometerML-170 Tool List ADC 450429 1- 02/18/00-25