American Dryer Corp AD-170

ADC 450400 1- 02/27/98-50

Contents

Main Retain This Manual In A Safe Place For Future Reference Important AD-170 Page FOR YOUR SAFETY IMPORTANT Table of Contents SECTION I SECTION II SECTION III SECTION IV SECTION V SECTION VI SECTION VII SECTION VIII SECTION I Important Information A. Safety Precautions A. Cleaning SECTION II Routine Maintenance 5 WARNING: THE ACCUMULATION OF LINT IN THE EXHAUST DUCT WORK CAN CREATE A POTENTIAL FIRE HAZARD. B. Adjustments C. Lubrication A. Enclosure, Air Supply, and Exhaust Requirements SECTION III Installation Requirements B. Electrical and Gas Requirements C. Operational Service Check Procedure B. Control Box C. DSI Module (Gas Models Only) SECTION IV Description of Parts A. Computer Panel Assembly Page H. Idler Assembly I. Tumbler Bearing and Pulley Arrangement J. Basket (Tumbler) L. Sail Switch (Gas Models ONLY) K. Main Door Switch M. Hi-Limit (Gas Models Only) O. Lint Drawer N. Automatic Reset Thermostat P. Lint Drawer Switch Q. Steam Damper System SECTION V Servicing Introduction 14 A. Computer Controls To Replace Computer To Replace Keyboard Label Assembly 15 To Replace Microprocessor Temperature Sensor Probe NOTE: DO NOT remove screws. Page To Replace Gas Valve (see burner illustration on page 16) To Replace Main Burner Orifices 18 To Test and Adjust Gas (Water Column) Pressure NOTE: Manometers are available from the factory by ordering ADC P/N 122804 To Convert from Natural Gas to L.P. Gas 20 To Replace Burner Tubes 21 To Replace DSI Module C. Thermostats To Replace Burner Hi-Limit Thermostat (Gas Models Only) IMPORTANT: Under no circumstances should heat circuit safety devices ever be disabled. 22 To Replace Lint Compartment Hi-Heat Protector (225 Degree) Thermostat IMPORTANT: Under no circumstances should heat safety devices be disabled. NOTE: DO NOT remove the screws. D. Sail Switch Assembly (Gas Models Only) 23 To Replace Sail Switch To Adjust Sail Switch E. Front Panel and Main Door Assemblies To Replace Main Door Switch To Replace Main Door Assembly To Install New Main Door Glass 25 To Replace Front Panel To Replace Main Door Hinge Pad 26 F. Pulleys To Replace Tumbler Pulley To Replace Small Idler Pulley To Replace Large Idler Pulley To Replace Motor Pulley G. Basket Assembly Basket Alignment (Vertical) (Up and Down Adjustment) Basket Alignment (Lateral) (Side to Side Adjustment) To Replace Tumbler (Basket) or Tumbler (Basket) Support 30 IMPORTANT: Never strike the shaft directly with a hammer. To Replace Front Basket Support Pillow Block Bearing To Replace Front Idler Shaft Pillow Block Bearing To Replace Rear Idler Shaft Pillow Block Bearing I. V-Belts (See illustrations in section F "Pulleys") V-Belt Tension Adjustment (Basket to Idler) 33 V-Belt Tension Adjustment (Motor to Idler) NOTE: Always replace V-belts in pairs. To Replace V-Belts J. Motors To Replace Drive Motor To Replace Impellor Motor (Fan Shaft Drive - Steam Models 50 & 60 Hz and 50 Hz Gas Models ONLY) Page 1. No display on computer. 2. Computer will not accept key pad entries. SECTION VI Troubleshooting Page 6. Dryer operates, probe sparks, but gas does not flow. 7. Dryer operates, probe sparks but there is no ignition even though gas is evident. 8. Dryer operates but is taking too long to dry. 9. Thermal overload for drive motor is tripping. 10. Overload for impellor (fan) motor is tripping. 11. Dryer is cycling on burner hi-limit safety thermostat. Page SECTION VII Electrical Trouble Shooting A. Phase 5 OPL System Diagnostics Diagnostic (LED Display) Failure Codes Phase 5 OPL Microprocessor Controller Relay Output LED Indicators B. LED Display Indicators Page Page C. LED Display/Codes LED Display Codes Page Fault Codes D. Computer Logic and Wiring Diagram Page 51 1. No Display Condition 2. Drive motor reverses but does not go 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. "No Heat" drive & blower motors run, display reads normal (Gas Models). 54 6. "No Heat" drive and blower motors run, display reads normal (Steam Models). 7. "Door" condition 55 8. Microprocessor reads "DSFL" NOTE: Before continuing with this section check the .125 MA fuse on the computer board. SECTION VIII Technical Information A. Motor Plate (High and Low Voltage) Page 58 HOW TO USE A MANOMETER NOTE: Place manometer in a position so that readings can be taken at eye level. C. Using a Manometer D. AD-170SE Tool List