ADC ML-96 service manual

080699DMG/tcosta ADC Part No. 450406

ML-96

Service Manual

American Dryer Corporation

88 Currant Road

Fall River, MA 02720-4781

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

e-mail: techsupport@amdry.com

Contents

Main Retain This Manual In A Safe Place For Future Reference Important ML-96 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 ...with fuses A. COMPUTER PANEL (MICROPROCESSOR) B. REVERSING RELAY PANEL C. HSI (HOT SURFACE IGNITION) MODULE (Gas Models Only) D. GAS BURNER ASSEMBLY E. DRIVE MOTOR F. DRIVE SHAFT ASSEMBLY G. IDLER SHAFT ASSEMBLY H. TUMBLER (BASKET) I. MAIN DOOR SWITCH J. SAIL SWITCH (Gas Models Only) K. BURNER HI-LIMIT (Gas Models Only) L. MANUAL RESET THERMOSTAT M. LINT SCREEN N. LINT DRAWER SWITCH SECTION V SERVICING INTRODUCTION WARNING: PERSONAL INJURY COULD RESULT. A. COMPUTER CONTROLS Display Board Replacement Keyboard (Touchpad) Label Assembly Replacement Microprocessor Temperature Sensor Probe Replacement NOTE: DO NOT remove screws. Flame Sensor Probe Replacement Hot Surface Ignitor Flame Sensor Probe Gas Valve Replacement (Refer to burner illustration on page 11) Main Burner Orifices Replacement To Test and Adjust Gas (Water Column) Pressure To Convert Natural Gas to L.P. Gas Burner Tubes Replacement HSI (Hot Surface Ignition) Module Replacement C. MANUAL RESET BURNER HI-LIMIT (330 F [166 C]) THERMOSTAT REPLACEMENT (Gas Models Only) Manual Reset Tumbler Hi-Limit (225 F [107 C]) Thermostat Replacement D. SAIL SWITCH ASSEMBLY (Gas Models Only) Sail Switch Replacement To Adjust Sail Switch E. FRONT PANEL and MAIN DOOR ASSEMBLIES Main Door Switch Replacement Main Door Assembly Replacement To Install New Main Door Glass Front Panel Replacement Main Door Hinge Block Replacement F. DRIVE SHAFT PULLEY REPLACEMENT NOTE: Pulley must be aligned for proper operation. Drive Motor Pulley Replacement NOTE: Pulleys must be aligned for proper operation. G. TUMBLER WHEEL REPLACEMENT ON DRIVE ASSEMBLY (Taper Lock Models) H. TUMBLER WHEEL REPLACEMENT ON IDLER ASSEMBLY (Taper Lock Models) I. BASKET ASSEMBLY NOTE: Dryer must be level prior to tumbler (basket) alignment. J. 1-15/16 FLANGE BEARING REPLACEMENT K. ROTATIONAL SENSOR ASSEMBLY L. IDLER SHAFT PILLOW BLOCK BEARING REPLACEMENT M. DRIVE SHAFT PILLOW BLOCK BEARING REPLACEMENT N. V-BELT ADJUSTMENT (Motor to Drive Axle) Drive Motor V-Belts Replacement O. MOTORS Drive Motor Replacement P. MOTORIZED IMPELLOR (BLOWER) REPLACEMENT Q. LINT DOOR SWITCH REPLACEMENT SECTION VI TROUBLESHOOTING C. Dryer will not start, but computer L.E.D. (light emitting diode) indicators are on... D. Drive motor runs, burner is on, but tumbler (basket) will not turn... E. D ryer operates but is taking too long to dry... Page Page SECTION VII 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 1. FAN (BLOWER) Output L.E.D. (light emitting diode) Indicator 4. AIR (AIR JET) Output L.E.D. (light emitting diode) Indicator - OPTIONAL 5. HT1 (HEAT) Output L.E.D. (light emitting diode) Indicator 6. FUSE (MAIN FUSE) Input L.E.D. (light emitting diode) Indicator 7. LINT (LINT DOOR) Input L.E.D. (light emitting diode) Indicator 8. MAIN (MAIN DOOR) Input L.E.D. (light emitting diode) Indicator 9. DRUM (TUMBLER [BASKET] HI-LIMIT) Input L.E.D. (light emitting diode) Indicator 10. SAIL (SAIL SWITCH) Input L.E.D. (light emitting diode) Indicator Page D. L.E.D. CODES 1. Display Codes Page E. COMPUTER LOGIC and WIRING DIAGRAM Page 1. No Display Condition 2. Drive motor reverses but DOES NOT forward, blower motor runs 3. Drive motor works in forward mode but DOES NOT reverse, blower motor runs 4. Blower motor DOES NOT operate, drive motor runs 5. Lint Door Condition 6. Main Door Condition 7. No Heat drive and blower motors run, display reads normal (gas models). 8. Microprocessor (Computer) IMPORTANT MANUAL RESET HI-LIMIT INSTRUCTIONS FOR PHASE 6 MODELS SECTION VIII TECHNICAL INFORMATION A. MOTOR PLATE (HIGH and LOW VOLTAGE) B. DATA LABEL Information on the Data Label C. HOW TO USE A MANOMETER NOTE: Place manometer in a position so that readings can be taken at eye level. D. ML-96 TOOL LIST