American Dryer Corp ML-170, ML-145 service manual Section Technical Information

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SECTION V
SERVICING		16
Introduction		16
A. Computer Controls		16
B.	Ignition Controls	18
C. Thermostats		21
D. Sail Switch Assembly (Gas Models Only)		22
E. Front Panel and Main Door Assemblies		23
F.	Pulleys	25
G.	Tumbler (Basket) Assembly	27
H. Bearings		29
I.	V-Belts	31
J.	Motors	32
K. Impellor		33
L.	Lint Drawer Assembly	33
SECTION VI
TROUBLESHOOTING		35
SECTION VII
ELECTRICAL TROUBLESHOOTING		41
SECTION VIII
PHASE 6 OPL SYSTEM DIAGNOSTICS		42
A. Diagnostic (L.E.D. [light emitting diode] Display) Failure Codes		42
B. L.E.D. (light emitting diode) Display Indicators		44
C. Phase 6 OPL Microprocessor Controller (Computer) Relay Output L.E.D. (light emitting diode)
	Indicators	45
SECTION IX
L.E.D. DISPLAY/CODES		49
A. L.E.D. Display Operating Status		49
B. Phase 6 OPL Microprocessor L.E.D. Displays		50
C. L.E.D. Codes		51
D. Computer Logic and Wiring Diagram		53
SECTION X
TECHNICAL INFORMATION		58
A. Motor Plate (High and Low Voltage)		58
B. Data Label		59
C. Use a Manometer		60
D. ML-170 Tool List		61

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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 LubricationInstallation Requirements ENCLOSURE, AIR SUPPLY, and Exhaust RequirementsElectrical and GAS 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 MotorIdler Assembly Blower Motor and Impellor GAS and SteamTumbler Basket Bearing and Pulley Arrangement Main Door Switch Sail Switch Gas Models onlyTumbler Basket Automatic Reset Thermostat HI-LIMIT Gas Models onlyLint Drawer 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 Remove Flame Probe Assembly Ignition ControlsTo Replace Gas Valve Refer to above burner illustration 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 HSI Hot Surface Ignition Module ThermostatsTo Replace Burner Hi-Limit Thermostat Gas Models Only 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 Main Door Hinge Blocks PulleysTo Replace Tumbler Basket Pulley To Replace Small Idler Pulley To Replace Large Idler PulleyTumbler Basket Assembly Tumbler Basket Alignment Vertical Up and Down AdjustmentTo Replace Motor Pulley 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 BearingBelt Tension Adjustment Tumbler Basket to Idler To Replace Rear Idler Shaft Pillow Block BearingBelts Refer to illustrations in section F Pulleys 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 DoorDisplay is reading Hot Dryer operates but is taking too long to dryThermal overload for drive motor is tripping 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 FAN Blower Output L.E.D. light emitting diode Indicator AIR AIR JET Output L.E.D. Indicator OptionalHT1 Heat Output L.E.D. Indicator 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 Models only Power 24 VAC is not Evident AT GAS Valve GAS/ELECTRIC only BURNER/OVEN Open HI-LIMIT CircuitGAS only Ignition Attempt Failure 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