ADC AD-360X2 SECTION VI

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SECTION VI

BCD-1 TYPE MODULE

A. INTRODUCTION

The Direct Spark Ignition (DSI) system operates at 24 VAC and is a discrete component based gas ignition

control (DSI module) system, which utilizes a line frequency spark as an ignition source. Safe proof of flame is

accomplished through flame rectification. The DSI module has a diagnostic light emitting diode (L.E.D.) indicating

light, which simplifies troubleshooting in the event of a fault.

Other Features...

• Safe proof of ignition

• Multiple precise timing functions

• Draft tolerant burner supervision (recycles)

• Flame sensing via flame rectification

• AGA approved

• 24 VAC high cycle rated gas valves

• Suitable for operation with either natural gas or liquid propane (L.P.) gas

• Captive discharge spark

• Internal diagnostics

B. GENERAL SYSTEM INFORMATION

1. DSI System Components/Functions:

a. The DSI module is designed to be the “controller” of the DSI system.

When activated by the dryer’s controls, this module constantly monitors

and controls the functions of the DSI system (i.e., spark activation,

gas valve on/off functions, flame verification, etc.), can be operated at

either 50 Hz or 60 Hz; and has self-diagnostic capabilities.

The L.E.D. (indicator light) on the DSI module simplifies the

troubleshooting procedure in the event of a fault within the DSI system.

If the L.E.D. on the module lights “GREEN” continuously, then the

system is functioning properly. A flashing “GREEN” L.E.D.

(LOCKOUT mode) indicates that ignition/flame has not been confirmed.

Refer to the Troubleshooting Section of this manual for specific

diagnostic information.

The DSI module allows for a continuous spark burst of three (3) 8-second durations. If a flame is not

established after the initial three (3) 8-second spark burst, the module will LOCKOUT.

NOTE: To reset the DSI module if it is in the LOCKOUT mode, open and close the main door then

restart the dryer. If the module repeatedly locks out, refer to the Troubleshooting Section of

this manual.

Direct Spark Ignition DSI Module

Contents

Main Retain This Manual In A Safe Place For Future Reference Important AD-360X2 Page Page Table of Contents Page SECTION I IMPORTANT INFORMATION A. SAFETY PRECAUTIONS SECTION II ROUTINE MAINTENANCE A. CLEANING B. ADJUSTMENTS SECTION III INSTALLATION REQUIREMENTS A. ENCLOSURE, AIR SUPPLY, AND EXHAUST REQUIREMENTS B. ELECTRICAL AND GAS REQUIREMENTS NOTE: Any burner changes must be made by a qualified technician. C. OPERATIONAL SERVICE CHECK PROCEDURE SECTION IV DESCRIPTION OF PARTS A. CONTROL PANEL B. CONTROL AND RELAY PANELS C. COIN BOX D. DOOR SWITCH (HINGE BLOCK) G. BASKET (TUMBLER) AND DRIVE MOTOR ASSEMBLY ARRANGEMENT F. BASKET (TUMBLER) E. MICROPROCESSOR ASSEMBLY Page K. GAS BURNER M. HI-LIMIT THERMOSTAT L. SAIL SWITCH Page Page SECTION V SERVICE A. INTRODUCTION B. CONTROLS (COMPUTER) Page IMPORTANT: Pipe dope must be applied to manifold before installing it into new valve. Page C. BURNER CONTROLS (GAS) NOTE: Manometers are available from the factory by ordering part number 122804. Page NOTE:Take note of where wires are for installing the new module. D. THERMOSTATS AND TEMPERATURE SENSOR IMPORTANT: UNDER NO CIRCUMSTANCES should the heat circuit safety devices ever be disabled. Page E. SAIL SWITCH ASSEMBLY IMPORTANT: UNDER NO CIRCUMSTANCES should heat circuit safety devices ever be disabled. NOTE: Be careful not to drop or lose the twin speed nut on the backside of the sail switch. F. FRONT PANEL AND MAIN DOOR ASSEMBLIES IMPORTANT: UNDER NO CIRCUMSTANCES should the door switch be disabled. NOTE: Be careful not to lose the plastic washer on the hinge pin. Page Page Page SECTION VI BCD-1 TYPE MODULE A. INTRODUCTION B. GENERAL SYSTEM INFORMATION Page Page C. G-760 DIRECT SPARK IGNITION (DSI) FLOWCHART D. TROUBLESHOOTING Page NOTE: Preliminary steps - DO NOT OMIT - to minimize the time required to troubleshoot this system. Page 37 d. Troubleshooting Flowchart - Quick Reference... First Visual Check NO SPARK AND SYSTEM DOES NOT WORK 38 e. Troubleshooting Flowchart - Quick Reference... Second Visual Check SPARK PRESENT BUT MAIN BURNER DOES NOT COME ON 39 f. Troubleshooting Flowchart - Quick Reference... Third Visual Check MAIN BURNER LIGHTS BUT DOES NOT STAY ON Page NOTE: During the purge period, check to be sure that ALL gas shutoff valves are open. restart the dryer. IMPORTANT: The gap setting on the ignitor/flame-probe assembly is critical. Page Page Page Page Page SECTION VII TROUBLESHOOTING A. PHASE 5 COIN SYSTEM DIAGNOSIS Page Page Page Page C. NO START CONDITION D. NO DISPLAY CONDITION E. dSFL DISPLAY CONDITION F. dOOr DISPLAY CONDITION SECTION VIII DATA LABEL INFORMATION A. DATA LABEL B. USING A MANOMETER NOTE: Place manometer in a position so that readings can be taken at eye level. C. LIGHT EMITTING DIODE (L.E.D.) DISPLAY CODES