ML-175 / ML-190, American Dryer Corporation

ML-175 / ML-190

Service Manual

Phase 6 / Phase 7

Microprocessor Controls

American Dryer Corporation

88 Currant Road

Fall River, MA 02720-4781

Telephone: (508) 678-9000 / Fax: (508) 678-9447

E-mail: techsupport@amdry.com

www.amdry.com

ADC Part No. 450431-3

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ADC service manual ML-175 / ML-190, American Dryer Corporation

Contents

American Dryer Corporation ML-175 / ML-190 Date of Purchase Model no RESELLER’S Name Serial Numbers Retain This Manual in a Safe Place for Future Reference Table of Contents Safety Precautions Routine MaintenanceCleaning Important Information Installation Requirements Description of Parts Operational Service Check ProcedureCompressed Air Requirements Electrical and Gas Requirements Reversing Relay Panel Gas Burner AssemblySteam Coil and Damper System Steam Coil pH Level Rotational Sensor Assembly Idler Shaft AssemblySpeed Reducing Shaft Drive Shaft Sail Switch Gas Models Only Main Door SwitchBurner Hi-Limit Gas Models Only Tumbler Hi-Limit Lint Drawer Lint Drawer Switch Computer ControlsIntroduction Ignition Controls Page To Convert from Natural Gas to L.P. Gas ThermostatsTo Replace Burner Hi-Limit Thermostat Gas Models Only Front Panel and Main Door Assemblies Sail Switch Assembly Gas Models Only Pulleys To Install New Main Door GlassTo Replace Front Panel To Replace Drive Shaft Pulleys Bearings Tumbler AlignmentTo Replace Motor Pulley To Replace Drive/Idler Shaft Pillow Block Bearings To Replace Speed Reducing Shaft Bearings Rotational Sensor Switch ReplacementTo Replace Rear Tumbler Shaft Support Wheels Belts Basket and SupportMotors Impellor Lint Drawer AssemblyTo Replace Fan Shaft and/or Fan Shaft Bearings To Replace Lint Screen Troubleshooting Diagnostic L.E.D. Display Failure Codes Phase 6 OPL System DiagnosticsBurner hi-limit safety thermostat is tripping Overload for impellor fan motor is tripping D. Display Indicator Number D. Display Indicators AIR AIR JET Output L.E.D. Indicator Optional FAN Blower Output L.E.D. IndicatorHT1 Heat Output L.E.D. Indicator Fuse Main Fuse Input L.E.D. Indicator Phase 7 OPL System Diagnostics Technical Information Input / Output Board L.E.D. IndicatorsMotor Plate High and Low Voltage Example How To Use a Manometer Using a ManometerData Label Tool List 450431 ADC Part No 3 06/17/08