American Dryer Corp ML-190HS

ºF = 9(ºC + 32)

ºC = 5(ºF - 32)

EMPERATURE

ENSOR

URRENT

=ºC + ºK (273.15) =

MICROAMPS

(µA)

1,000,000

Contents

Main Retain This Manual In A Safe Place For Future Reference Important ML-190HS Page Page Table of Contents Page SECTION I IMPORTANT INFORMATION A. SAFETY PRECAUTIONS Page SECTION II ROUTINE MAINTENANCE A. CLEANING B. ADJUSTMENTS C. LUBRICATION SECTION III INSTALLATION REQUIREMENTS A. ENCLOSURE, AIR SUPPLY, and EXHAUST REQUIREMENTS B. ELECTRICAL and GAS REQUIREMENTS C. OPERATIONAL SERVICE CHECK PROCEDURE Page SECTION IV DESCRIPTION OF PARTS A. CONTROL PANEL (MICROPROCESSOR) B. CONTROL BOX C. HSI MODULE (Gas Models ONLY) I cant read number?? G. SPEED REDUCING SHAFT H. TUMBLER (BASKET) BEARING ARRANGEMENT I. TUMBLER (BASKET) J. MAIN DOOR SWITCH K. SAIL SWITCH (GAS MODELS ONLY) L. HI-LIMIT (GAS MODELS ONLY) M. MANUAL RESET THERMOSTAT N. LINT DRAWER O. LINT DRAWER SWITCH P. STEAM DAMPER SYSTEM Q. COMPRESSED AIR REQUIREMENTS SECTION V SERVICING INTRODUCTION A. COMPUTER CONTROLS To Replace Computer To Replace Keyboard (Touchpad) Label Assembly To Replace Microprocessor Temperature Sensor Probe NOTE: DO NOT remove screws. B. IGNITION CONTROLS To Remove HSI (Hot Surface Ignition) Ignitor C. TO REMOVE FLAME PROBE ASSEMBLY To Replace Gas Valve (Refer to burner illustration on page 21) To Replace Main Burner Orifices To Test and Adjust Gas (Water Column) Pressure To Convert from Natural Gas to L.P. Gas To Replace Burner Tubes To Replace HSI (Hot Surface Ignition) Module C. THERMOSTATS To Replace Burner Hi-Limit Thermostat (Gas Models Only) To Replace Lint Compartment Hi-Heat Protector (225 F) Thermostat D. SAIL SWITCH ASSEMBLY (GAS MODELS ONLY) To Replace Sail Switch To Adjust Sail Switch E. FRONT PANEL and MAIN DOOR ASSEMBLIES To Replace Main Door Switch IMPORTANT: UNDER NO CIRCUMSTANCES should the door switch be disabled. To Replace Main Door Assembly To Install New Main Door Glass To Replace Front Panel To Replace Main Door Hinge Blocks F. PULLEYS To Replace Drive Shaft Pulley To Replace Small Speed Reducing Pulley Shaft To Replace Large Speed Reducing Pulley To Replace Motor Pulley G. TUMBLER (BASKET) ALIGNMENT H. BEARINGS To Replace Rear Drive Shaft Pillow Block Bearing To Replace Front/Rear Speed Reducing Shaft Bearing To Replace Rear Tumbler (Basket) Support Flange Bearing NOTE: This may be accomplished the easiest through the lint coop. To Replace Front Drive Shaft Pillow Block Bearing NOTE: Check belt adjustment and readjust if necessary. To Replace Front Idler Shaft Pillow Block Bearing To Replace Rear Idler Shaft Pillow Block Bearing I. BASKET and SUPPORT To Replace Tumbler (Basket) and Tumbler (Basket) Support IMPORTANT: Never strike the shaft directly with a hammer. NOTE: Belts must always be replaced in pairs (matched sets). J. V-BELTS (See illustrations in section F Pulleys) V-Belt Tension Adjustment (Drive Shaft to Speed Reducing Shaft) NOTE: Always replace V-belts in pairs. V-Belt Tension Adjustment (Motor To Speed Reducing Shaft) To Replace V-Belts From The Blower Motor To The Fan K. MOTORS To Replace Drive Motor To Replace Impellor Motor (Fan Shaft Drive - 50/60 Hz Gas and Steam Models) To Replace Fan Shaft and/or Fan Shaft Bearings L. IMPELLOR M. LINT DRAWER ASSEMBLY To Replace Lint Screen To Replace Lint Drawer Switch SECTION VI TROUBLESHOOTING Page H. Dryer operates but is taking too long to dry... I. Thermal overload for drive motor is tripping... J. Overload for impellor (fan) motor is tripping... K. Dryer is tripping the burner hi-limit safety thermostat... L. Display reads Temp Sensor Fail Check Temp Sensor Fuse. Dryer Sensor Circuit Failure... N. There is excessive vibration coming from the tumbler (basket)... O. Dryer does not start. Display reads Main Door... SECTION VII ELECTRICAL TROUBLESHOOTING SECTION VIII PHASE 6 OPL SYSTEM DIAGNOSTICS A. DIAGNOSTIC (L.E.D. [light emitting diode] DISPLAY) FAILURE CODES Page B. L.E.D. (light emitting diode) DISPLAY INDICATORS Page SECTION IX L.E.D. DISPLAY/CODES A. L.E.D. (light emitting diode) DISPLAY OPERATING STATUS NOTE: Refer to the illustration on the following page for details. B. PHASE 6 OPL MICROPROCESSOR L.E.D. (light emitting diode) DISPLAYS 48 C. L.E.D. CODES 1. Display Codes D. COMPUTER LOGIC and WIRING DIAGRAM Page D. Blower motor does not operate, drive motor runs... E. No Heat drive and blower motors run, display reads normal (Gas Models)... F. No Heat drive and blower motors run, display reads normal (Steam Models)... Page Page SECTION X TECHNICAL INFORMATION A. MOTOR PLATE (HIGH and LOW VOLTAGE) B. DATA LABEL C. USING A MANOMETER How To Use A Manometer NOTE: Place manometer in a position so that readings can be taken at eye level. D. TOOL LIST