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ADC AD-200 B. TROUBLESHOOTING THE DIRECT SPARK IGNITION (DSI) SYSTEM

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B. TROUBLESHOOTING THE DIRECT SPARK IGNITION (DSI) SYSTEM

NOTE: The troubleshooting information provided in this manual is intended for use by qualified service

technicians only. OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment

or specified in the AD-200 Phase 7 Non-Tilting Installation/Operator’s Manual (ADC Part

No. 112142) included with the dryer.

IMPORTANT: UNDER NO CIRCUMSTANCES SHOULD ANY SAFETY OR HEAT

CIRCUIT DEVICES EVER BE DISABLED.

THE FOLLOWING PIECES OF TEST EQUIPMENT WILL BE REQUIRED TOTROUBLESHOOT THIS SYSTEM WITH MINIMAL TIME AND EFFORT

Available From ADC

MANOMETER

Used To Measure Gas Pressure In Inches

Of Water Column (W.C.)

DSI IGNITOR GAP FEELER GAUGE

(1/8” [3.175 mm])

Used For Checking Gap Between Ignitor/

Flame-Probe Assembly and Spark Electrode

Available From ADC

MULTIMETER/VOLTMETER

For Measuring Voltage

Contents

Main Retain This Manual In A Safe Place For Future Reference Important Page Page Table of Contents Page Page Page SECTION I SAFETY PRECAUTIONS Page SECTION II ROUTINE MAINTENANCE A. CLEANING SUGGESTED CLEANING SCHEDULE Page B. LUBRICATION C. ADJUSTMENTS 11 SECTION III SPECIFICATIONS AND DIMENSIONS Gas*Steam* A. SPECIFICATIONS (GAS AND STEAM MODELS) Page SECTION IV INSTALLATION REQUIREMENTS A. ENCLOSURE/AIR SUPPLY/EXHAUST REQUIREMENTS B. ELECTRICAL AND GAS REQUIREMENTS NOTE: Any burner changes must be made by a qualified technician. C. OPERATIONAL SERVICE CHECK PROCEDURE SECTION V COMPONENT DESCRIPTION/REPLACEMENT Page NOTE: THE DSI GAS VALVES ARE NOT FIELD REPAIRABLE. 18 h. Troubleshooting Flowchart - Quick Reference... No Spark And System Does Not Work First Visual Check 19 i. Troubleshooting Flowchart - Quick Reference... Second Visual Check 20 j. Troubleshooting Flowchart - Quick Reference... Third Visual Check B. TROUBLESHOOTING THE DIRECT SPARK IGNITION (DSI) SYSTEM Page NOTE: Preliminary steps - DO NOT omit - to minimize the time required to troubleshoot this system. Page 25 d. Troubleshooting Flowchart - Quick Reference... First Visual Check I (Does Ignitor Spark?) . 26 Second Visual Check (Does Main Burner Ignite?) . 27 f. Troubleshooting Flowchart - Quick Reference... Third Visual Check (Does Main Burner Ignite?) Page NOTE: During the purge period, check to be sure that ALL shutoff valves are open. IMPORTANT: THE GAP SETTING ON THE IGNITOR/FLAME-PROBE ASSEMBLY IS CRITICAL. Page NOTE: To reset the DSI module if it is in the LOCKOUT mode, Ignitor Control Fault will display. Page Page NOTE: During the purge period, check to be sure that ALL shutoff valves are open. IMPORTANT: THE GAP SETTING ON THE IGNITOR/FLAME-PROBE ASSEMBLY IS CRITICAL. Page NOTE: To reset the DSI module if it is in the LOCKOUT mode, Ignitor Control Fault will display. Page C. NATURAL GAS AND LIQUID PROPANE (L.P.) GAS CONVERSION INSTRUCTIONS D. STEAM COIL SYSTEM OPERATION IMPORTANT:Coil failure due to improper PH level will VOID THE WARRANTY. Page Page Page E. SPRINKLER SYSTEM DESCRIPTION Page NOTE: Identify the wires removed for proper reinstallation. Page Page Page F. AIR JET ASSEMBLY Page Page Page Page NOTE: Make certain that the blower (squirrel cage fan) can spin freely. IMPORTANT: DO NOT OVERTIGHTEN V-BELTS. IMPORTANT: DO NOT OVERTIGHTEN V-BELTS. Page Page H. FILTER/REGULATOR ASSEMBLY NOTE: THIS SELF-RELIEVING FEATURE IS NOT DESIGNED TO BLEED THE DOWNSTREAM PRESSURE. I. DOOR SYSTEMS AUTOMATIC DOORS Page Page Page Page Page Page Page Page Page Page Page Page Page Page K. BASKET (TUMBLER) SYSTEM Page Page NOTE: Replace V-belts in matched sets (both belts). IMPORTANT: DO NOT OVERTIGHTEN TURNBUCKLE. IMPORTANT: Both drive wheels should be replaced as a set on the drive shaft assembly. Page Page Page Page Page SECTION VI Page SECTION VII PHASE 7 OPL SYSTEM DIAGNOSTICS A. DIAGNOSTIC (L.E.D. DISPLAY) FAULT MESSAGES Page Page Page Page Page Page SECTION VIII TROUBLESHOOTING Page Page Page Page P. Microprocessor controller (computer) reads Exhaust High Temp Fault... Q. Dryer operates but is taking too long to dry... R. Excessive noise and vibration...