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ADC AD-360X2 Clothes Dryer User Manual

1. AD 360X2 Mechanical Electrical Service Procedure American Dryer Corporation 88 Currant Road Fall River MA 02720 4781 Telephone 508 678 9000 Fax 508 678 9447 e mail techsupport amdry com www amdry com 101802SRS wmarelli ADC Part No 450213 Retain This Manual In A Safe Place For Future Reference American Dryer Corporation products embody advanced concepts in engineering design and safety If this product is properly maintained it will provide many years of safe efficient and trouble free operation ONLY qualified technicians should service this equipment OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation manual included with the dryer The following FOR YOUR SAFETY caution must be posted near the dryer in a prominent location FOR YOUR SAFETY POUR VOTRE S CURIT Do not store or use gasoline or Ne pas entreposer ni utiliser d essence other flammable vapors and ni d autres vapeurs ou liquides liquids in the vicinity of this or inflammables a proximit de cet any other appliance appareil ou de tout autre appareil We have tried to make this manual as complete as possible and hope you will find it useful ADC reserves the right to make changes from time to time without notice or obligation in prices specifications colors and material and to change or discontinue models Important For your convenience log the following information
2. and the wires to end from these two 2 points Before following this test procedure check the component side of the computer to see if light emitting diode L E D input light is on If on and still reads door replace computer Voltage is 24 VAC unless otherwise specified em Remove door switch assembly from dryer Check for continuity across the two 2 terminals of the door switch with plunger pushed in If no continuity replace the door switch If continuity is evident reassemble door switch back on dryer a Repeat the above procedure for the lint door switch Make sure both the main and lint doors are closed and the plungers are pushed in Check for voltage across pin 4 blue wire J5 6 pin connector to ground If no voltage is evident problem could be faulty transformer or fuse 1 is blown If voltage is evident then continue with Step 3 Check for voltage at the J2 3 pin connector pin 1 blue wire to ground If no voltage the problem is a loose connection or a bad main door switch If no voltage is evident continue to Step 4 Take a voltage reading at the microprocessor J1 9 pin connector pin 9 blue wire If no voltage is evident the problem may be a loose connection on that wire or a bad lint drawer switch 55 MAN2587 O ON SECTION VIII DATA LABEL INFORMATION A DATA LABEL Contact American Dryer Corporation ad N iN MODE y JUFACTURING
3. NOTE Becareful notto lose the plastic washer on the hinge pin 5 Reassemble by reversing steps TO INSTALL NEW MAIN DOOR GLASS 1 Remove main door assembly from the dryer follow main door hinge removal procedure 2 Place the main door on a flat surface with front of door face down 3 Remove glass and clean ALL old sealant off main door This area must be completely cleaned for correct bonding 4 Apply a narrow bead of silicone ADC PN 170730 ALL around main door area where glass will rest 5 Install glass on to door and adhesive and slightly press glass in place IMPORTANT DO NOT press hard or silicone thickness between the glass and door will be reduced resulting in poor bonding 6 The door assembly should now be put in an area where it will not be disturbed for at least 24 hours Depending on the conditions the curing time of the adhesive is 24 to 36 hours 7 After 24 hour curing period install main door on dryer by reversing Step 1 25 TO REPLACE FRONT PANEL l 2 7 8 Discontinue power to the dryer Remove the computer panels Remove the kick trim plate Remove lint screen drawers from the dryer Remove the screws securing the front panel to the dryer Disconnect the 4 pin door switch harness connector from the lint drawer switch box top and bottom Remove the front panel assembly from the dryer Reverse this procedure for installing the new front panel TO REPLACE THE NYLON C
4. SAIL SWITCH The sail switch consists of a round damper plate on a lever arm which acts like an actuator for a microswitch When the air blower comes on it draws air through the burner This creates a negative pressure inside the burner box and this negative pressure pulls in the round damper which activates the sail switch If there is improper airflow the damper will not pull in preventing the burner from coming on Improper airflow can be caused by improperly designed exhaust ducting where the duct run is too long or has too many sharp bends on it It can also be caused by a lack of make up air or any obstruction such as back draft damper sticking or lint build up The sail switch is located in the back of the burner M HI LIMIT THERMOSTAT The burner hi limit thermostat is another safety device that we use on the dryer The hi limit is located in the burner area The hi limit thermostat cuts off the heat if the temperature should reach 290 or higher Under normal conditions the only way this device would shut off the heat is when the airflow changes to the extent of causing the intense heat from the burner to trip the thermostat 12 N LINT DRAWER SWITCH The lint drawer switch is located under the basket tumbler on the right side Itis another added safety device that stops the operation of the dryer when the lint drawer is opened This device and the door switch are the two 2 safety switches designed to ha
5. and ground YES between terminals M V 3 and ground Is 24 VAC present Replace Johnson Control module G760 761 Check for continuity in wiring from M V 3 to gas valve and gas valve to GR Determine why continuity does not exist Is inlet gas pressure per manufacturer s specifications Is Spark gap 0 1 in and in gas stream Replace gas valve 38 f Troubleshooting Flowchart Quick Reference Third Visual Check MAIN BURNER LIGHTS BUT DOES NOT STAY ON Is flame sensor cable securely attached i PHD Does continuity exist from control to flame sensor Replace sensor cable Is flame sensor corroded Correct or sensor Does continuity exist in ground path from burner to control Check flame sensing current during trial Is current greater than Is flame sensor positioned 0 3u A DC per manufacturer s specifications YES Replace Johnson Control module G760 761 Replace Johnson Control module G760 761 39 3 Troubleshooting System Detailed Diagnosis When the dryer calls for heat 24 VAC from the step down transformer is applied to the THS and GND ground terminals of the Direct Spark Ignition DSI module The DSI module light emitting diode L E D indicator will light GREEN The gas valve will be energized and the spark burst will be evident on for approximately 8 seconds at the tip of the electrode flame pro
6. 4 827 627 b Automatic Cycle Heat loss offset Factor bCLO Bad Coin Lockout bCrS Bad Coin Reset bUZ Buzzer Tone CEL Degree in Celsius CLCC Clear Left Coin Count COIn Coin Mode CrCC Clear Right Coin Count donE Drying and Cooling Cycles Complete or Dryer is in Anti Wrinkle Cycle dOOr Door Circuit is Open dSFL Dryer Sensor Circuit Failure FAr Degree in Fahrenheit FILL No Cycle in Progress FLS Flash Display Active FrEE Free Dry Mode GdLY Anti Wrinkle Delay Time Gont Anti Wrinkle On Time Grd Anti Wrinkle Program Active HICd High Cool Down Temp Hot Overheating Condition LCC Left Coin Count LCde Left Coin Denomination LOCd Low Cool Down Temp nbUZ No Buzzer Tone nFLS No Flash Display Ngrd No Anti Wrinkle nSEn Rotational Sensor Not Selected PdrY Percent Dry PL Program Location PLOC Program Location Automatic Review PP Permanent Press PUSH Amount to Start has been Inserted Make Temperature Selection rCC Right Coin Count rCdE Right Coin Denomination SEFL Rotational Sensor Circuit Failure SEn Rotational Sensor Selected tFAS Time for Amount to Start tInE Timed Mode 58 The revision number is located on the top right hand corner of the diagram Itis a six 6 digit number followed by a letter to distinguish the version dates refer to the illustration Your particular model will be different depending on the date of manufacturing and options available The correct wiring diagram for your dryer is fol
7. CODE N NE a ORIFICE SIZE 6 4 IRIFICE SIZE o ES CENTRE IE NES GAS NATURAL TS y EN IT SERVIC N y Q ELECTRIC SERVICE IN GAS MANIFOLD PRESSURE cy 35 IN WC FOR USE WITH GASES ANSI Z2152 CLOTHES DRYER VOL SECHEUSES VOL 2 FOR CANADIAN INSTALLATIONS WITH ELEVATIONS BETWEEN 2 000 AND 4 500 FT HEAT INPUT ORIFICE SIZE NE ie RAR 12 01 00 MAN5526 When contacting American Dryer Corporation certain information is reguired to ensure proper service or parts information from ADC This information is on the data label which is affixed to the left side panel wall area behind the bottom control panel When contacting ADC please have the model number and serial number handy 1 MODEL NUMBER The model number is an ADC number which describes the size of the dryer and the type of heat gas electric or steam 2 SERIAL NUMBER The serial number allows ADC to gather information on your particular dryer 3 MANUFACTURING CODE NUMBER The manufacturing code number is a number issued by ADC which describes ALL possible options on your particular model 56 TYPE OF HEAT This describes the type of heat for your particular dryer gas either natural gas or liquid propane L P gas electric or steam HEAT INPUT for GAS DRYERS This describes the heat input in British Thermal Units per Hour Btu hr ORIFICE SIZE for GAS DRYERS Gives the number drill size used ELECTRIC SERVICE This describes the elect
8. DATE OF PURCHASE MODEL NO AD 360X2 RESELLER S NAME Serial Number s Replacement parts can be obtained from your reseller orthe ADC factory When ordering replacement parts from the factory you can FAX your order to ADC at 508 678 9447 or telephone your order directly to the ADC Parts Department at 508 678 9000 Please specify the dryer model number and serial number in addition to the description and part number so that your order is processed accurately and promptly The illustrations on the following pages may not depict your particular dryer exactly The illustrations are a composite of the various dryer models Be sure to check the descriptions of the parts thoroughly before ordering IMPORTANT NOTE TO PURCHASER Information must be obtained from your local gas supplier on the instructions to be followed if the user smells gas These instructions must be posted ina prominent location near the dryer IMPORTANT YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPLY AND THE GAS SUPPLY BEFORE ANY COVERS OR GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING ADJUSTING INSTALLATION OR TESTING OF ANY EQUIPMENT PER OSHA Occupational Safety and Health Administration STANDARDS FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE DO NOT DRY MOP HEADS IN THE DRYER DO NOT USE DRYER IN THE PRESENCE OF DRY
9. START CONDITION O GROUND UG o Follow this testprocedure providing that the microprocessor controller computer is functioning where the display is in the normal operating mode and the motor indicator dot is on and the light emitting diode L E D motor output light is on The voltage you should be reading is 24 VAC unless otherwise specified i AOSASARAS mmmmmmnnn nnna HOBE WHWHHHHUH UHHHHHWuUH 1 Check to see if dOOr L E D input light is on Located on component side of the computer board If it s off refer to dOOr in the Troubleshooting Section 2 Check for voltage at the microprocessor pin 7 If no voltage check for a loose connection or the microprocessor itselfis faulty Ifno voltage is present proceed to the next step MAN4240 3 Check for voltage across the coil connections of the motor relay Ifno voltage is evident check for a loose connection going back to J5 6 pin connector 3 If voltage is evident proceed to the next step 4 Take a voltage reading on the motor contactor between L1 and N neutral If no voltage 120 VAC replace the motor contactor If voltage is present check for loose connection going to the drive motor or the drive motor itself maybe faulty 52 D NO DISP
10. around the control panel area including the coin acceptors Clean lint accumulation from around the basket tumbler wrapper area WARNING LINT FROM MOST FABRICS IS HIGHLY COMBUSTIBLE THE ACCUMULATION OF LINT CAN CREATE A POTENTIAL FIRE HAZARD AS REQUIRED In cleaning and care of the cabinet avoid using harsh abrasives A product intended for the cleaning of appliances is recommended B ADJUSTMENTS SUGGESTED INTERVAL 6 MONTHS Drive belts should be examined Cracked or seriously frayed belts should be replaced Tighten loose drive belts when necessary and check belt alignment Complete operational check of control and valves Complete operational check of ALL safety devices door switches sail switch and burner high limits and lint chamber thermostats 12 MONTHS Inspect bolts nuts screws and nonpermanent gas connections unions sail switch burner and lint chamber thermostats SECTION HI INSTALLATION REQUIREMENTS Installation should be performed by competent technicians in accordance with local and state codes In the absence of these codes the installation must conform to applicable American National Standards ANSI Z223 1 LATEST EDITION National Fuel Gas Code or ANSI NFPA NO 70 LATEST EDITION National Electrical Code or in Canada the installation must conform to applicable Canadian Standards CAN CGA B149 1 M91 Natural Gas or CAN CGA B149 2 M91 Liguid Propane L P Gas or LATEST EDITION for Genera
11. determine the gap size DO NOT If an adjustment is necessary bend the ground rod to achieve the correct gap then recheck the 1 8 GAP with a feeler gauge b The alignment of the ignitor flame probe assembly in relation to the gap on the ignitor electrode ground rod must be maintained in as vertical straight line a position as possible refer to the illustration below otherwise the DSI module will indicate system malfunction and go into the LOCKOUT mode L E D will BLINK GREEN CONTINUOUSLY NOTE To reset the DSI module if it is in the LOCKOUT mode open and close the main door then restart the dryer c The positioning of the ignitor flame probe assembly is extremely important because it provides the necessary feedback information to the DSI module The flame probe electrode must be positioned 1 4 minimum into the flame path refer to the illustration below and must be positioned 1 inch 2 54 cm maximum from the burner tube refer to the illustration below otherwise the DSI module will indicate a system malfunction and go into the LOCKOUT mode L E D will LIGHT RED CONTINUOUSLY TOP OF FLAME i yee NN PN AN PRISA NS N NN WN NN SN NN y TI o 1 MAXIMUM R TOP view Y MANO600 NOTE To reset the DSI module if it is in the LOCKOUT mode open and close the main door then restart the dryer 3 Air Turbulence If there is sail switch flutter due to air turbulen
12. ground rod and the ignitor spark electrode b After performing these inspections and making corrections restore electric power to the dryer start the dryer and operate through one 1 complete cycle to insure ALL components are functioning properly If a no heat condition persists the three 3 visual indicators annotated as Item C on page 36 will help isolate equipment problems and lead you directly to the proper Quick Reference Troubleshooting Flowcharts on page 37 page 38 and page 39 35 1 To effectively use this information or the flowcharts on page 37 page 38 and page 39 each step must be completed in sequence performing whatever tests are suggested After the completion of each test the guide will direct the service technician to the next logical step in the troubleshooting sequence based on the outcome of the previous check 2 Components should be replaced only after each step has been completed and replacement is suggested in the flowchart However the experienced technician realizes that a loose connection or broken or shorted wire may be at fault where electrical components are concerned and not necessarily the suspected component itself Three 3 Visual Checks 1 No spark and system does not work If not proceed to First Visual Check on page 37 2 Spark present but main burner does not come on If not proceed to Second Visual Check on page 38 3 Main burner lights but does not stay on If not pro
13. should be made with the electrical power to the dryer disconnected power off WARNING PERSONALINJURY COULD RESULT The information provided in this section should not be misconstrued as a device for use by an untrained person making repairs Service work should be performed by competent technicians in accordance with local state and federal codes When contacting the factory for assistance always have the dryer model number and serial number available The information provided will help isolate probable components associated with the difficulty described The experienced technician realizes however that a loose connection or broken or shorted wire may be at fault where electrical components are concerned not necessarily the suspected component itself Electrical parts should always be checked for failure before being returned to the factory IMPORTANT YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPLY AND THE GAS SUPPLY BEFORE ANY COVERS OR GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING ADJUSTING INSTALLATION OR TESTING OF ANY EQUIPMENT PER OSHA Occupational Safety and Health Administration STANDARDS B CONTROLS COMPUTER TO REPLACE COMPUTER 1 Disconnect power to the dryer 2 Open coin panel one 1 lock in the center of the coin panel 3 Disconnect the display harness from the computer board push the two 2 tabs on the side of the connector outwards 4 Disconnect the opt
14. 00 feet 609 6 meters unless elevation requirements of over 2 000 feet 609 6 meters were specified at the time the dryer order was placed with the factory The adjustment for dryers in the field for elevations over 2 000 feet 609 6 meters is made by changing the burner orifices If this adjustment is necessary contact the reseller who sold the dryer or contact the ADC factory NOTE Any burner changes must be made by a qualified technician C OPERATIONAL SERVICE CHECK PROCEDURE After performing any service or maintenance function an operational check should be performed to insure that ALL components are performing properly 1 Make a complete operational check of ALL the operating controls to insure that the timing is correct temperature selection switches are functioning properly 2 Make a complete operational check of ALL safety related circuits door switches hi limit thermostats sail switch and cycling thermostats etc SECTION IV DESCRIPTION OF PARTS A CONTROL PANEL The coin panel assembly consists of the coin operator a display board and the keyboard touch pad label The coin acceptor is used to acknowledge that the proper coin has been put through the acceptor The display board will just display the time and temperature in a readable number of letter characters The keyboard touch pad label is used to input Hi Low or Perm Press selection for the dryer to start B CONTROL AND RELAY PANELS The control
15. 03 O i i MAN6589 B NO HEAT CONDITION BLOWER IS ON The following procedure must be performed with the microprocessor controller computer display in the normal operating mode the heat indicator dot on and the light emitting diode L E D output light is on Voltage is 24 VAC unless otherwise specified SRS 2 12 03 MAN6 366 50 With the heat indicator on check for voltage at J1 connector 9 pin connector pin 8 orange wire to ground if 24 volt is present If no voltage 24 VAC check for loose connection at 9 pin connector or problem may be faulty microprocessor Check for voltage 24 VAC at J11 connector pin 3 orange wire If no voltage check for loose connection or bad basket tumbler hi limit If voltage is present proceed to next step At the rear basket tumbler hi limit take a voltage reading 24 VAC from one of the red wires to ground Do this on both wires one at a time If voltage is not present then the problem is a loose connection going back to the sail switch or the sail switch itself is faulty If voltage is present on only one 1 of the red wires then the problem is a loose connection on the rear basket tumbler hi limit switch or the rear basket tumbler hi limit switch itself is faulty If voltage 24 VAC is present from each red wire to ground then proceed to the next step Check for 24 VAC at the Direct Spark Ignition DSI module terminals marked TH
16. ATCH 1 2 3 Open the main door Drill out the two 2 pop rivets holding nylon catch to front panel using 21 0 1590 drill bit Using two 2 pop rivets PN 154215 install nylon catch PN 170330 to the front panel Friction Door Latch Kit PN 881987 26 TO REPLACE ROTATIONAL SENSOR SWITCH 1 Discontinue electrical power to the dryer 2 Remove the magnetic rotational sensor switch from the bracket by loosening the nuts 3 Depress the tabs on the rotational sensor harness plug and pull apart then remove the sensor switch 4 To install a new sensor switch connect the plug of the new sensor switch to the sensor harness 5 Place one 1 adjustment nut onto the sensor switch 6 Place the second adjustment nut on but DO NOT tighten The magnet on the rear teflon plate and the sensor switch must be in a horizontal line to one another 7 The gap between the magnet and the sensor switch must be 1 8 inch 8 Tighten the adjustment nuts installed in Step 5 and Step 6 9 Reestablish electrical power to the dryer 27 BASKET TUMBLER REMOVAL 1 Disconnect power to the dryer 2 Remove the control panels and kick trim plate 3 Remove the front panel and disconnect the door switches 4 Now remove the motor separator panel if removing the top basket tumbler 5 Loosen the two 2 nuts on the idler tension arm 6 Move to the rear of the dryer Remove the retaining basket tum
17. CLEANING FUMES CAUTION DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN OPERATION WARNING CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR THE DRYERS CHILDREN SHOULD BE SUPERVISED IF NEAR DRYER S IN OPERATION WARNING The dryer must never be operated with any of the back guards or service panels removed PERSONAL INJURY OR FIRE COULD RESULT WARNING DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER OR SCREEN IN PLACE EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED IMPORTANT PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment and specified in the installation manual included with the dryer The wiring diagram for the dryer is located behind the left front control panel Table of Contents SECTION I IMPORTANT YNFORNMATEON ii wa Ran daw DNA GWRANAG OON AN DNA ND MANGOR ad AR 3 A Ac DY Precautions Ad O Y EN 3 SECTION H ROUTINE MAINTENANCE ii as 4 A A gaat cs asin aaa y GY Y YN GY 4 Bs Adjustments y i GA Y NG Y NN cam eae GY ddo 5 SECTION III INSTALLATION REQUIREMENTS cccccsccsscsssssesssssssssssscssesscccccsssssesesessssssscnseess 6 A Enclosure Air Supply and Exhaust Requirements u19 nr Ynn Yn FY nono noco roca FY nn nnnnuo 6 B Electrical and Gas Regitiremenits ce a O GEN GA 7 C Operational Service Check Procedure ii A ds 8 SECTION IV DESCRIPTION OF PARTS ui Cu uu diw iD aa LG Gn YL Gad DG dn FC LO 9 O Panel ae ee no a i Rd E Y a o 9 B Controland
18. ESULT WARNING DO NOT dry rags or articles coated or contaminated with gasoline kerosene oil paint or wax EXPLOSION COULD RESULT WARNING DO NOT dry mop heads Contamination by wax or flammable solvents will create a fire hazard WARNING DO NOT use heat for drying articles that contain plastic foam sponge rubber or similarly textured rubberlike materials Drying in a heated basket tumbler may damage plastics or rubber and may be a fire hazard 5 A program should be established for the inspection and cleaning of lint in the burner area and exhaust ductwork The frequency of inspection and cleaning can best be determined from experience at each location WARNING The collection of lint in the burner area and exhaust ductwork can create a potential fire hazard 6 For personal safety the dryer must be electrically grounded in accordance with local codes and or the National Electrical Code ANSI NFPA NO 70 LATEST EDITION or in Canada the Canadian Electrical Codes Parts 1 amp 2 CSA C22 1 1990 or LATEST EDITION NOTE Failure to do so will VOID THE WARRANTY 7 UNDER NO CIRCUMSTANCES should the dryer door lint drawer switches or heat safety devices ever be disabled 8 READ AND FOLLOW ALL CAUTION AND DIRECTION LABELS ATTACHED TO THE DRYER WARNING Children should not be allowed to play on or in the dryers Children should be supervised if near dryers in operation SECTION II ROUTINE MAINTENANCE A CLEAN
19. ING A program and or schedule should be established for periodic inspection cleaning and removal of lint from various areas of the dryer as well as throughout the ductwork system The frequency of cleaning can best be determined from experience at each location Maximum operating efficiency is dependent upon proper air circulation The accumulation of lint can restrict this airflow Ifthe guidelines in this section are met an ADC dryer will provide many years of efficient trouble free and most importantly safe operation WARNING LINT FROM MOST FABRICS IS HIGHLY COMBUSTIBLE THE ACCUMULATION OF LINT CAN CREATE A POTENTIAL FIRE HAZARD SUGGESTED INTERVAL DAILY Clean lint screen Inspect lint screen and replace if damaged 90 DAYS Remove lint accumulation from lint chamber thermostats and sensors WARNING TO AVOID THE HAZARD OF ELECTRICAL SHOCK DISCONTINUE ELECTRICALSUPPLY TO THE DRYER Remove lint from the motor air vents and surrounding area IMPORTANT Lint accumulation will restrict internal motor airflow causing overheating and irreparable damage Motor failure due to lint accumulation will VOID THE WARRANTY 120 DAYS Remove lint from gas burner area with a dusting brush or vacuum cleaner attachment 6 MONTHS Inspect and remove lint accumulation in customer furnished exhaust ductwork system Inspect exhaust back draft dampers to insure they are not binding Inspect and remove ALL lint accumulation from in and
20. KET TUMBLER AND DRIVE MOTOR ASSEMBLY ARRANGEMENT The basket tumbler and the drive motor arrangement are located viewing from the front of the dryer approximately at the rear right side of the dryer The arrangement consists of an idler pulley drive motor and basket tumbler which serve to adjust drive and support the basket tumbler The idler assembly has various nuts and bolts that are made to adjust the belt tension 10 H IDLER ARM AND IMPELLOR MOUNT ASSEMBLY The idler assembly is located in the back of the dryer which is attached to the drive motor assembly The main purpose of the idler assembly is to reduce the speed of the motor in turn increasing the torque of the basket tumbler pulley I DRIVE MOTOR AND IDLER PULLEY ARRANGEMENT The dryer has a different kind of drive system There is one 1 motor pulley one 1 drive belt and an idler arm assembly by the basket tumbler The drive motor drives the belt that rotates the basket tumbler J TEMPERATURE SENSORS The temperature sensor used in a transducer converts heat into microamps that the computer board then uses to calculate the temperature 11 K GAS BURNER The gas burner assembly consists of two 2 burner tube orifices the orifice has a hole in it to allow gas to flow through The hole size varies with different elevation Btus gas valve which can be up for natural or liquid propane L P and a flame probe assembly L
21. L P gas IMPORTANT The DSI gas valves are not field repairable There are no parts available for field repair Replace valve only with exact model and or type number as noted on gas valve 2 System Basic Electric Ratings Specifications e Input Voltage 18 VAC to 30 VAC must be grounded Line Frequency 50 Hz or 60 Hz Maximum Input Current 0 100 amps valve load 25 VAC Valve Load 1 amp maximum 25 VAC Spark Voltage 14 000 volts 3 System Basic Timing Specifications Trial for Ignition 8 seconds Flame Failure Response Time 0 5 seconds maximum Flame Failure Reignition Time 0 5 seconds maximum Prepurge Time 1 5 seconds 0 5 seconds Retry Time none Lockout Time 10 seconds maximum 31 C G 760 DIRECT SPARK IGNITION DSI FLOWCHART THERMOSTAT CALLS FOR HEAT 24 Volts applied to control PREPURGE SECONDS TRIAL TIME FOR IGNITION SECONDS FLAME SENSED AT MAIN BURNER POWER REMOVED SPARK SWITCHED OFF VALVES SPARK SWITCHED OFF y RUN MAIN BURNER OPERATION 3 TRIAL MODEL Control monitors main burner flame YES NO Y LOCKOUT HAS THIRD TRIAL Until power is removed THERMOSTAT SATISFIED BEEN COMPLETED from control Power removed from control and valves NO YES INTERPURGE See control label for actual times SECONDS 1 Normal Operation Summary On a call for heat by the
22. LAY CONDITION MCROPROCESSOR NOTE Regardless ofthe voltage 120 240 VAC make sure the voltage selector switch is set to 115 VAC 1 Check power supply Dryer voltage 110v 208v 220v Circuit breaker box or fuse panel 2 Check fuse 2 3 4 amp Slo Blo if blown replace it 3 Check for voltage at the J5 6 pin connector 120 VAC pin 1 black wire and pin 2 white wire Ifno voltage check for a loose connection 4 Check for voltage at the microprocessor pin 6 black wire and pin 3 white wire If no voltage check for a loose connection If voltage is present the problem may be a faulty microprocessor 5 Check for voltage across the computer s 9 pin connector pin numbers 6 and 3 110v 208v 220v If no voltage is evident problem is bad wire or termination from the computer s connector pin numbers 6 and 3 to the 9 pin connector J2 pin numbers 6 and 3 If voltage is evident problem is faulty computer 53 When the display reads dSFL this condition indicates a fault in the microprocessor controller computer heat circuit This circuit includes the microprocessor controller computer microprocessor temperature sensor located in lint compartment and wires to and from these two 2 points 4 dSFL DISPLAY CONDITION Check the 1 8 amp fuse on the computer board If no continuity replace with ADC PN 136048 If fuse repeatedly burns out go t
23. LOCKOUT mode This indicates that the module tried to ignite the gas a total of three 3 times of an 8 second spark each time After the third time this blinking GREEN L E D comes on If the dryer repeatedly has DSI module LOCKOUT failures the cause may be due to high voltage HV getting into the DSI module probe circuit 1 Check to insure that the red voltage wire between the ignitor spark electrode and the DSI module is not wrapped around the sensor probe wire the wire between the DSI module FP terminal and the ignitor assembly flame probe Ifthe wires are touching one another separate and secure in place AWAY FROM ONE ANOTHER 2 Check to insure that the dryer is properly grounded and that the ground connections GND to the DSI module are secure 3 Ifthe problem persists it is most likely to be in the external components not the DSI module or wiring or due to flame out proceed as follows a Disconnect electric power to the dryer b Visually check DSI components for apparent damage c Check wiring for loose connection nicks or cracking at the ceramic insulator or shorting of sensor to burner d Inspect the DSI ignitor flame probe assembly check electrode for visible cracking at ceramic insulator or shorting of sensor to burner check to insure flame sensor rod is positioned over flame area check for carbon deposits on flame sensor rod check to insure that there is a 1 8 gap between the
24. MPORTANT UNDER NO CIRCUMSTANCES SHOULD ANY SAFETY OR HEAT CIRCUIT DEVICE EVER BE DISABLED The following troubleshooting guide provides systematic procedures for isolating equipment problems and again is intended for use by a qualified service technician SPARK IGNTOR Y e SENSOR i MAIN BURNER t I j A I SV a y if A i ll PIN NS y q S E E 76 mra dk lt e R E w N 5 Je a AS 1 WN UL F gm o TEST EQUIPMENT The following pieces of test equipment will be required to troubleshoot this system with minimal time and effort MANOMETER Used to measure gas pressure in inches of water column W C Available from ADC Part No 122804 INNER TUBE OUTER TUBE 33 DSIIGNITOR GAP FEELER GAUGE 1 8 MULTIMETER VOLTMETER For checking the gap between ignitor assembly ground rod and spark electrode For measuring voltage and or amperage Available from ADC Part No 305410 ae 7 K SL Direct Spark Ignition DSI Troubleshooting Terms Definitions a LOCKOUT Mode DSI module GREEN light emitting diode L E D indicator light blinks continuously This indicates there is a system fault and most likely the fault is that the DSI module was not able to ignite the gas b FLAMEO
25. OT THE SAME ALL voltage connections should be checked and confirmed according to the wiring diagram provided with the individual dryer Any damage done to dryer components due to improper voltage connections will automatically VOID THE WARRANTY IMPORTANT The ADC Service Department must be contacted prior to any wiring change and or conversion because depending on the change conversion required some parts may have to be added deleted or changed When contacting the ADC Service Department they must be given the correct model number and serial number for the dryer s NOTE Any wiring change s and or conversion s should be accomplished by a QUALIFIED ELECTRICAL TECHNICIAN 1 Transformer Wiring There are six 6 color coded wires coming from the 24 VAC Transformer There are four 4 wires coming from the primary incoming voltage side of the transformer Their application and color coding are as follows a For 120 VAC application ONLY 1 The BLACK and WHITE wires are used 2 The Red and Blue wires are capped off individually b For 208 VAC application ONLY 1 The BLACK and BLUE wires are used W O RED 5 24 VAC TRANSFORMER PB 12 1 99 2 The Red and White wires are capped off individually c For 240 VAC application ONLY 1 The BLACK and RED wires are used 2 The White and Blue wires are capped off individually There are two 2 yellow or orange wires comin
26. Relay Pancita 9 Ci Con Box uy RW es cea NAA his YNYD WN CF A GWGU 9 D Door Switch Hinge Block ceritana Ad E dU Y FFOL 10 E Microprocessor Assembly e a eau a a a Wace a a iae 10 E Basket 1 Winall GP AAA naa A A IS N T 10 G Basket Tumbler and Drive Motor Assembly Arrangement oooocinccnnonoconoconnninnnconncconocnncnnncconncns 10 H IdlerArm and Impellor Mount Assembly it cda 11 I Drive Motor and Idler Pulley Arrangement cin iaa diarias 11 J Temperature CASES e O a T O Y Bd cis 11 K Gras Burmer niei cal ahd Benge a a a a aa FTG a aR 12 E Sail Switch A A a a a REDD OY AT 12 ME Art MOS a a FY aa 12 AN A a a a CY e e O a a eaten aan oo se bik 13 Ot Ent Drawer eetere e E T NRA a a E A T ER 13 P Front Thruster Wheel Bracket Assembly ns aba 13 Q Rear Basket Tumbler Drive Wheels da GADO 14 R Rotational Sensor Assembly ismni en A A FA 14 SECTION V SERVICE a 15 Ay LOU GG Cd ahead ddd anaes 15 B Controls Computer see E ca sp O ha a a eases onan ns tas 15 C Burner Controls Gas Jesenino NO a nace eee A Le in AU aU 19 D Thermostats and Temperature Sensor iu eii eii ig Yi Ed ndd AT Rn SG USA AA NA DYCH An bad des FN ASGC RS 22 E cai SwitcheAssembly uu dio 24 F Front Panel and Mam Door Assemblies ni YNYD FA FGNF ROF YDYN GU Bo G4 25 SECTION VI BC Dede TYPE MODULE cases Udd GIG GOG Ud UNION 29 Ar MO UG IONE y ties ots GG Y Y GG de 29 B General System Information 2 4 aud OR GN O UF 29 C G 760 Direct Spark Ignition DSI Fl
27. UT Burner flame shutdown by the DSI module due to lack of flame verification This condition occurs only after ignition has been evident but is lost The system will attempt to relight the burner after 30 seconds Troubleshooting System Basic Diagnosis a Preliminary Steps The following steps must be performed to minimize the time required to isolate cause of fault 1 DSI module L E D indicator is off no GREEN light a Check for voltage approximately 24 VAC across the DSI module terminals THS and GND ground If voltage approximately 24 VAC is evident then there is a malfunction within the DSI module itself and it must be replaced b If there is no voltage and the problem is not the DSI module or the ignition system then the problem is elsewhere in the dryer 1 e dryers heat circuit sail switch hi limit circuits etc 34 2 Direct Spark Ignition DSI module light emitting diode L E D indicator lights GREEN for up to approximately 1 5 seconds prepurge This indicates that ALL the controls including ALL the safety circuits are functioning and power is being supplied to the DSI module a DSI module L E D indicator lights GREEN This indicates a normal heating cycle This also indicates that the preliminary diagnostics of the module has confirmed that the DSI module is functional b DSI module L E D indicator lights a blinking GREEN light continuously
28. and GnD If no voltage 24 VAC is present check for a loose connection going back to the burner hi limit or the burner hi limit itself may be faulty If voltage 24 VAC is present at the TH and GnD terminals proceed to the next step If no spark is present check for any hairline cracks at the base of the ignitor If cracks are present replace the ignitor If no cracks are present then the module PN 128935 may be faulty If spark is occurring then proceed to Step 7 Check for voltage 24 VAC on the Direct Spark Ignition DSI module terminals marked MV and GnD while the ignitor is sparking 24 VAC should be present on those two 2 terminals MV and GnD Ifno voltage 24 VAC then the problem is either a loose connection or a faulty DSI module PN 128935 If voltage is present proceed to next step Check for 24 VAC at the gas valve terminals marked 1 and 2 If no voltage 24 VAC is present check for a loose connection on the two 2 wires at the gas valve or the DSI module PN 128935 may be faulty If voltage 24 VAC is present proceed to next step Check the gas valve shutoff and make sure it is in the on position Check to ensure proper gas pressure is being applied to the gas valve Ifstill no ignition use a manometer on the manifold side of the gas valve If the proper gas pressure is not present while the ignitor is sparking the problem is a faulty gas valve 51 C NO
29. and relay panels are located in the back of the dryer in the middle top selection The function of the control and relay panels is to compile signals from the computer or the incoming voltage and transfer the signals to the motor and heat circuit when the computer executes these various signals C COIN BOX The coin box assembly is located below the belt and right coin panel It is a good size triangular box When a coin passes the acceptor the optic switch sends a signal to the computer and the coin then falls in the coin box D DOOR SWITCH HINGE BLOCK AN The main door switch is located behind the main door on the right hand 7 side When the main door is opened the switch will also open preventing the dryer from operating The main door switch is a safety device and should never be disabled E MICROPROCESSOR ASSEMBLY The microprocessor board is the latest Phase 5 controls It monitors the dryer functions ALL the time Indicator light emitting diode L E D is mounted on the board to help with servicing of the dryer F BASKET TUMBLER The basket tumbler consists of three 3 ribs and a perforated basket tumbler along with a front and back which are riveted together as an assembly The basket tumbler also consists of pop rivets which attach the basket tumbler to the drive system in the rear The felt collar helps to keep lint from accumulating behind the basket tumbler G BAS
30. ap on the top of the valve b Turn the slotted adjustment screw located on the top of the valve next to the terminals Turn clockwise CW to increase manifold pressure and counterclockwise CCW to decrease NOTE If correct water column W C pressure cannot be achieved problems may be due to an undersized gas supply line a faulty or underrated gas meter etc FILL WITH WATER TO ZERO LEVE TO CONVERT FROM NATURAL TO LIQUID PROPANE L P GAS 1 Disconnect electrical power to the dryer 2 Close ALL shutoff valves in dryer gas supply line 3 Disconnect gas valve wiring NOTE Identify location of each wire for correct reinstallation 4 Break union connection nut between union shutoff and gas valve 5 Loosen and remove four 4 screws from pipe brackets holding the gas valve manifold assembly to the gas valve plate 6 Remove gas valve and manifold assembly from the dryer 7 Unscrew main burner orifice and replace with L P orifices supplied NOTE Use extreme care when removing and replacing orifices These orifices are made of brass which is easily damaged 8 To convert gas valve for use with L P gas refer to the instructions included in kit envelope f92 0737 supplied 9 Reverse procedure for installing valve manifold assembly to the dryer IMPORTANT External regulation of a consistent gas pressure of 10 5 inches 26 1 mb water column W C must be provided 10 Open ALL
31. basket tumbler rotation detection circuit or the Phase 5 coin microprocessor controller computer program related to this circuit PL 0 1 is set incorrectly in the active mode SEn where the dryer is not equipped with the optional rotational sensor and should be set in the nonactive mode nSEn Also check to see if the belt came loose or the rotational sensor magnet is broken If not adjust rotational sensor reed switch within 1 4 to the magnet 4 Hot indicates a possible overheating condition The Phase 5 coin microprocessor controller computer monitors the temperature in the dryer at ALL times If the microprocessor controller computer detects that the temperature in the dryer has exceeded 220 F 104 C it will disable ALL outputs shut the dryer down the tone bUZ will sound for approximately 5 seconds and the light emitting diode L E D temperature sensor has dropped to 220 F 104 C or lower and the microprocessor controller computer is manually reset by closing and opening the program switch PS on the back side of the controller MICROPROCESSOR CONTROLLER COMPUTER RELAY OUTPUT L E D INDICATORS There are three 3 L E D indicators red lights located at the lower backside area of the controller they are identified and labeled dOOr MOTOR and HEAT as shown in the illustration on the next page These L E D s indicate that the outputs of the Phase 5 coin microprocessor controller c
32. be assembly Flame should now be established confirmed Ifa flame is not sensed confirmed by the flame probe sensor after the approximate 8 second spark burst the DSI module will wait 30 seconds and start ALL over again If a flame has been established confirmed and then lost the DSI module L E D indicator will continue to light GREEN wait 30 seconds and try again The flame should now be established confirmed Ifa flame is not sensed confirmed by the flame sensor probe after the initial try the module will try two 2 more times then if it is still not established it will go into LOCKOUT NOTE To reset the DSI module if it is in the LOCKOUT mode open and close the main door then restart the dryer a System Diagnosis z PRESSURE TAP GAS VALVE gt SS 1 Gas Pressure A gas pressure test should be taken at the gas valve pressure tap provided on every gas valve to assure that the water column W C pressure is correct and consistent There are two 2 types of devices commonly used to measure water column pressure They are the spring mechanical type gauge and the water MER TUBE e column test gauge manometers The use of the DN spring mechanical type of gauges is not recommended because it they are very easily damaged and they are not always accurate The preferred type of gauge is the manometer because e it is a simple device to use and is highly accurate A manometer is simply a glas
33. bler shoulder bolt that secures the rear teflon pad to the basket tumbler 7 Now return to the front of the dryer and pull the basket tumbler outwards 8 To install a new basket tumbler reverse the removal instructions BASKET TUMBLER WHEEL REMOVAL 1 Disconnect power to the dryer 2 Follow Step 2 through Step 7 in Basket tumbler Removal above 3 Loosen and remove the 9 16 nut and pull the wheel out 4 Reverse Step 3 to reinstall the wheel 5 To reassemble reverse the previous procedures 28 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 B 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 GENERAL SYSTEM INFORMATION 1 DSI System Components Functions a The DSI module is designed to be the controller of
34. ce or improper impellor rotation and or a restriction in the exhaust ductwork the DSI module will cycle erratically This in turn might cause the DSI module to LOCKOUT where the L E D will BLINK GREEN CONTINUOUSLY a Ifair turbulence causes the flame to move away from the flame probe electrode of the ignitor flame probe assembly or if the flame goes out completely during the heat flame cycle the DSI module will attempt to reestablish a flame by going into a reignition cycle 42 NOTE To reset the Direct Spark Ignition DSI module ifit is in the LOCKOUT mode open and close the main door then restart the dryer 4 DSI Module If there is some sort of operational interference in the DSI system the DSI module acting as the controller for the system will go into a LOCKOUT mode where the light emitting diode L E D will BLINK GREEN CONTINUOUSLY a Operational interference is any adverse condition whether internal or external to the system Electrical noise is considered external noise interference because it can cause the DSI module to cycle erratically 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 gap the alignment and the position of the ignitor flame probe assembly are correct if the gas flow pressure is constant and consistent if there is no adverse air turbulence and if the DSI module remains in the LOCKOUT mode wh
35. ceed to Third Visual Check on page 39 36 d Troubleshooting Flowchart Quick Reference First Visual Check NO SPARK AND SYSTEM DOES NOT WORK Is 24 VAC available at transformer NO YES Is 24 VAC present from terminal THS2 to ground NO YES Y Is power available at primary NO YES Replace transformer Are thermostats contacts and limit control contacts closed Close contacts Determine why voltage is not present Check continuity of wiring to determine why voltage does not exist at THS2 Is jumper installed from terminal 5 to ground Install Open thermostat contacts for 30 seconds Close contacts and wait for prepurge if applicable period Is spark now present Turn off supply voltage Check high voltage cable Is it securely attached to spark transformer Is condition of high voltage cable good not brittle burnt or cracked Is spark electrode ceramic cracked or is electrode grounded out Replace Johnson Control module G760 761 Replace electrode assembly System was in lockout Observe a complete operating cycle to determine why control locked out 37 e Troubleshooting Flowchart Quick Reference Second Visual Check SPARK PRESENT BUT MAIN BURNER DOES NOT COME ON Is main valve wiring securely attached to terminal M V 3
36. ch relay and door switch circuit to easily identify failures DIAGNOSTICS L E D DISPLAY FAILURE CODES 1 dOOr Indicates door switch circuit is open a Keyboard touch pad entry was made while main door is open or b There is a fault in the door switch circuit external of the microprocessor controller computer c Possible blown fuse 2 dSFL Indicates a fault in the microprocessor temperature sensor circuit If a fault is detected in the microprocessor heat sensor circuit the display will read dSFL and the tone buzzer will sound for approximately 5 seconds every 30 seconds until a The problem is corrected or b Power to the dryer is disconnected and the problem is then corrected 47 IMPORTANT The Phase 5 coin microprocessor controller computer has its own internal heat sensing circuit fuse protection located on the back side of the controller Ifa dSFL condition occurs check to see if this fuse has blown If it has DO NOT replace the entire microprocessor controller computer replace the fuse and do so witha 1 8 amp Slo Blo fuse only NOTE Once the microprocessor controller computer detects a problem in the heat circuit it updates every 30 seconds Ifthe problem was a loose connection in this circuit which corrected itself the dSFL condition would be cancelled 3 SEFL indicates rotational sensor circuit failure meaning that there is a fault somewhere in the
37. ctivated in 15 seconds the sail switch is properly adjusted 6 Ifthe heat system is activated the sail switch is improperly adjusted and must be readjusted by bending the actuator arm of the sail switch toward the left side of the dryer If the actuator arm is bent too far toward the left side of the dryer the dryer may not have heat when needed After any adjustments of the sail switch the above procedure must be repeated to verify proper operation CAUTION DO NOT disable this switch by taping or screwing sail switch damper to burner Personal injury or fire could result 24 F FRONT PANEL AND MAIN DOOR ASSEMBLIES TO REPLACE MAIN DOOR SWITCH 77 a 1 Discontinue power to the dryer 2 Open main door 3 Remove the two 2 Phillips head screws holding the main door switch in place 4 Disassemble door switch bracket by removing the two 2 nuts holding the door switch to the housing and remove the door switch 5 Reverse this procedure for installing new door switch IMPORTANT UNDER NO CIRCUMSTANCES should the door switch be disabled TO REPLACE MAIN DOOR HINGE BLOCKS 1 Discontinue power to the dryer 2 Remove the two 2 top 3 16 Allen screws securing the top hinge pin to the front panel 3 Remove the door from the dryer by lifting the door off the bottom hinge pin 4 Remove the bottom hinge pin assembly from the front panel two 2 3 16 Allen screws securing the hinge pin to the front panel
38. ctor thermostat Refer to appropriate installation manual for more details B ELECTRICAL AND GAS REQUIREMENTS 1 Electrical Requirements It is your responsibility to have ALL electrical connections made by a properly licensed and competent electrician to assure that the electrical installation is adequate and conforms to local and state regulations or codes In the absence of such codes ALL electrical connections materials and workmanship must conform to the applicable requirements of the National Electrical Code ANSI NFPA NO 70 LATEST EDITION or in Canada the Canadian Electrical Codes Parts 1 amp 2 CSA C22 1 1990 or LATEST EDITION 2 Grounding A ground earth connection must be provided and installed in accordance with state and local codes In the absence of these codes grounding must conform to applicable requirements of the National Electrical Code ANSI NFPA NO 70 LATEST EDITION or in Canada the installation must conform to applicable Canada Standards Canadian Electrical Codes Parts 1 amp 2 CSA C22 1 1990 or LATEST EDITION The ground connection may be to a proven earth ground at the location service panel 3 Gas Information It is your responsibility to have ALL plumbing connections made by a qualified professional to assure that the gas plumbing installation is adequate and conforms to local and state regulations or codes In the absence of such codes ALL plumbing connections materials and workmanship mus
39. ded and placed inside of the computer area Diagrams for this book are as follows including ALL revisions ofthe numbers listed below Fy A JA FAA D EV O 7 os O AY _ CHA W O C AA On O 14 E TNA hei y y A r m GRAY J Or y fr URA I PJ eat a FY L E EA 1 U iva AMA fes Mf AX Ap SS ford 1 14 42 15 J 59 COMPUTER LOGIC AND WIRING DIAGRAM LINT DOOR amp MAIN DOOR TEMP L gt Ss 5 KEYPAD LABEL MICROCONTROLLER CHIP CO BLOWER y gt E ACCEPTOR MOTOR A y CONTACTOR amp yN SSILVA 1 31 03 DRIVE y MOTOR Su DS MODULE GNITOR AND GAS MAN6479 FLAME PROBE VALVE 60 American Dryer Corp ADC 450213 1 08 18 03 25
40. dryers controls 24 VAC is applied to the DSI module at which time the modules light emitting diode L E D indicator will light GREEN indicating that power has been established to the module Almost immediately up to approximately 1 5 seconds prepurge the valve opens and the spark burst will be evident on for approximately 8 seconds The burner flame should now be established confirmed If at this time the flame has not been established confirmed the DSI module will try two 2 more times then if still no ignition the modules indicator will blink continuously To reset or cancel the LOCKOUT condition open and close the main door and restart the dryer Once the burner flame is established confirmed the DSI module L E D indicator will stay GREEN and the burner system will continue through a normal heating cycle where the DSI system will cycle on and off as required by the dryer s controls During the normal heating cycle should a flameout occur i e severe air turbulence forces the flame away from the ignitor assembly flame probe the DSI module will shut the gas valve off and try to reestablish the burner flame after 30 seconds 32 D TROUBLESHOOTING The troubleshooting information provided in this manual is intended for use only by qualified service technician Observe ALL safety precautions displayed on the equipment or specified in the installation operator s manual included with the dryer I
41. ere the L E D will BLINK GREEN CONTINUOUSLY then there is a malfunction within the DSI module itself and it must be replaced 5 Wiring If the DSI module is in the LOCKOUT mode where the L E D will BLINK GREEN CONTINUOUSLY and the mechanical components have been checked i e the ignitor flame probe assembly the gas valve etc then there may be a problem somewhere in the DSI system wiring a Check ALL the wiring within the DSI system especially the ground connections on the DSI module and the ignitor flame probe assembly NOTE Check for any possible damage to the ceramic insulators on the ignitor electrode and the flame probe electrode of the ignitor flame probe assembly b Make sure the flame probe electrode of the ignitor flame probe assembly is positioned no more than 1 inch 2 54 cm maximum from the burner tube CAUTION DO NOT LET THE IGNITOR FLAME PROBE ASSEMBLY TOUCH THE BURNER TUBES OTHERWISE THE ENTIRE ASSEMBLY WILL SHORT OUT 6 DSI 24 VAC Transformer The DSI transformer is designed to step down the operating voltage of the dryer to 24 VAC to operate the DSI module This transformer like ALL transformers is two 2 sided refer to the illustration on page 44 43 a Primary Side This is the incoming voltage side 120 VAC 208 VAC 230 240 VAC of the transformer b Secondary Side This is the step down side 24 VAC of the transformer WARNING 208 VAC and 230 240 VAC ARE N
42. evices ever be disabled 1 Discontinue power to the dryer 2 Remove the two 2 hex head screws from the hi limit switch Then the hi limit will be removed from the burner box Remove the two 2 wires from the hi limit 3 Reverse procedure for installing new thermostat 22 TO REMOVE THE TEMPERATURE SENSOR OR HIGH HEAT PROTECTOR 1 High Heat Protector a Discontinue power to dryer b Remove the lint drawer from the dryer c Remove the two 2 free spin wash nuts that is securing the temperature sensor bracket to the dryer d Disconnect the 4 pin connector on the temperature sensor bracket NOTE Be careful not to let the sensor harness that you just disconnected to fall back into the computer area e Remove the two 2 nuts washers and screws securing the 190 hi limit to the sensor bracket Also disconnect the two 2 connectors on the 225 hi limit f Reverse the procedure for installation of new high heat protector 2 Temperature Sensor a Discontinue power to the dryer b Remove the lint drawer from the dryer c Remove the two 2 free spin wash nuts that are securing the temperature sensor bracket to the dryer d Disconnect the 4 pin connector on the temperature sensor bracket NOTE Be careful not to let the sensor harness that you just disconnected to fall back into the computer area e Remove the top tinnerman clip that secures the sensor probe to the bracket Also remo
43. g from the secondary step down side of the transformer d One 1 YELLOW or ORANGE wire is connected to the GND ground termination 44 e One 1 YELLOW or ORANGE wire supplies the 24 VAC signal for the control and or DSI circuit Refer to specific wiring diagram with the dryer for connection point 7 Direct Spark Ignition DSI 24 VAC Redundant Gas Valve There are three 3 DSI 24 VAC Redundant Gas Valves in use refer to the illustration below and on the next page The particular redundant gas valve that is used is dependent solely on the size model of the dryer ALL three 3 redundant gas valves utilize 24 VAC which is provided by the DSI module Their applications are as follows IMPORTANT The DSI 24 VAC Redundant Gas Valves ADC Part No 128927 contain no serviceable parts replacement coils ARE NOT available Replace with exact model and type number ONLY a ADC PN 128927 1 To check the resistance values on this particular gas valve a Disconnect the terminations at the gas valve from the DSI module 2 With a meter either a multimeter or ohmmeter set on the 200 ohm position place the meter leads across a Terminals 1 and 2 the reading should be approximately 96 ohms b Terminals 3 and 4 the reading should be approximately 96 ohms 3 If after checking the resistance values on this particular redundant gas valve it is determined that the ohm readings DO NOT approximate the ohm val
44. ic switch harness from the computer squeeze the tabs on the side of the connector 15 9 Disconnect the keyboard touch pad connector from the computer board keyboard touch pad harness simply pull straight out Disconnect the 9 pin main computer harness from the computer squeeze the one 1 tab on the connector and pull straight back Disconnect the green ground wire from the computer board Remove the two 2 Phillips head screws that secure the computer to the panel Remove the board from the panel by pulling at the comers of the board Replace in the reverse steps of the above 10 Reestablish power to the dryer TO REPLACE KEYBOARD TOUCH PAD l 2 7 8 Discontinue power to the dryer Open the coin panel and disconnect the keyboard touch pad ribbon connector from the ribbon cable it is plugged into Peel the keyboard touch pad from the front a of the control panel taking care to avoid scratching the panel Clean any adhesive residue from the panel Peel off paper backing from new keyboard touch pad Align the display window on the keyboard touch pad with the cutout in the control panel and press in place Connect keyboard touch pad ribbon to the board and reconnect power to the dryer Test for operation by pressing each temperature selection TO REPLACE COIN ACCEPTOR 1 Discontinue power to the dryer Open the coin panel Remove the four 4 3mm nuts holding
45. ignitor flame probe assembly consists of a ceramic insulated ignitor electrode a ground rod and a ceramic insulated flame probe electrode The gap between the ignitor electrode and the ground rod is set and must be maintained at 1 8 1 32 3 175 mm 0 79248 mm When the DSI module provides the high voltage HV synchronous spark 14 000 volts through the high voltage HV lead a spark is produced over the gap When this spark is produced the gas valve is opened Upon ignition the resistance in the flame probe electrode of the ignitor flame probe assembly changes Once the resistance is changed it initializes the DSI to sustain the gas flow from the gas valve IMPORTANT The gap setting on the ignitor flame probe assembly is critical a DSI Ignitor Flame Probe Assembly lt gt Adjustments TUBE BURNER TYPE Yo 1 The gap on the ignitor flame probe assembly must be set and held at 1 8 1 32 3 175 mm 0 79248 mm Ifthis 1 8 gap is not maintained if the gap is either too large or too small the DSI module will indicate a system malfunction and go into the LOCKOUT mode L E D will BLINK GREEN CONTINUOUSLY 41 NOTE To reset the Direct Spark Ignition DSI module ifit is in the LOCKOUT mode open and close the main door then restart the dryer a To check and or set the 1 8 gap use a DSI Ignitor gap feeler gauge refer to the illustration on page 41 or similar type device to
46. l Installation and Gas Plumbing or Canadian Electrical Codes Parts 1 amp 2 CSA C22 1 1990 or LATEST EDITION for Electrical Connections A ENCLOSURE AIR SUPPLY AND EXHAUST REOUIREMENTS Bulkheads and partitions around the dryer should be made of noncombustible materials Refer to appropriate installation manual for recommended distances and minimum allowances reguired When the dryer is operating it draws in room air heats it passes this air through the basket tumbler and exhausts it out of the building Therefore the room air must be continually replenished from the outdoors Ifthe make up air is inadeguate drying time and drying efficiency will be adversely affected Ignition problems and sail switch fluttering problems on gas dryers may result and you could have premature motor failure from overheating The air supply must be given careful consideration to ensure proper performance of each dryer IMPORTANT Make up air must be provided from a source free of dry cleaning solvent fumes Make up air that is contaminated by dry cleaning solvent fumes will result in irreparable damage to the motors and other dryer components Exhaust ductwork should be designed and installed by a competent technician Improperly sized ductwork will create excessive back pressure which will result in slow drying increased use of energy and shutdown of the burner by the airflow sail switch burner hi limit or lint chamber hi heat prote
47. lt the basket tumbler O LINT DRAWER The lint drawer is located under the baskets tumblers ofeach pocket Itis a fairly large drawer that is designed to be right in the main path of the airflow to catch any lint that happens to come out of the articles being dried P FRONT THRUSTER WHEEL BRACKET ASSEMBLY Behind the front panel for each pocket there are two 2 basket tumbler drive wheels This supports the weight of the basket tumbler This also allows the basket tumbler to spin freely without bearings and basket tumbler support shaft LINT DRAWER SWITCH 13 REAR BASKET TUMBLER DRIVE WHEELS There is a left and right basket tumbler drive wheel bracket assembly This allows the basket tumbler to spin freely without bearings or basket tumbler support shaft E O _L a s SLS A Y EAN MAN6357 SRS 11 13 02 Or as ys MN Q R ROTATIONAL SENSOR ASSEMBLY The Rotational Sensor Assembly is located in the rear of the dryer It consists of a magnet and a rotational switch which is mounted to the sail switch rotational sensor bracket The magnetic rotational sensor switch senses the rotation of the basket tumbler If the gap between the sensor switch and the magnet is greater than a preset amount then the dryer will shutdown on SEFL rotational sensor failure 14 SECTION V SERVICE A INTRODUCTION ALL electrical or mechanical service or repairs
48. nd replace NOTE Use extreme care when removing and replacing orifice The orifice is made of brass and can be easily damaged 6 Reverse the removal procedure for reinstalling WARNING Test ALL connections for leaks by brushing on a soapy water solution WARNING NEVER TEST FOR LEAKS WITHA FLAME 19 TO TEST AND ADJUST GAS WATER COLUMN W C PRESSURE There are two 2 types of devices commonly used to measure water column pressure They are spring mechanical type gauges and manometers The spring mechanical type gauge is not recommended because it is easily damaged and not always accurate One 1 form of a manometer is a hydro gauge which simply consists of an inner and outer tube When this tube is filled with water and pressure is applied the water in the inner tube decreases giving you your gas pressure reading NOTE Manometers are available from the factory by ordering part number 122804 1 Test gas water column pressure a Connect water column test gauge connection to gas valve pressure tap 1 8 N P T This pressure tap is located on the outlet downstream side of the valves b Start the dryer With burner on the correct water column reading in inches would be Natural Gas oo ecceecceesseereeeees 3 5 Inches 8 7 mb W C Liquid Propane L P Gas 10 5 Inches 26 1 mb W C 2 To adjust water column pressure natural gas only L P gas must be regulated at source a Remove the slotted vent c
49. ng new valve REPLACE BURNER TUBE ASSEMBLY Refer to the illustration below 1 Discontinue power to the dryer 2 Remove the four 4 hex nuts that hold the burner hood bracket to the burner box 3 Remove the two 2 hex nuts that hold the burner tube to the burner box 4 Pull down on the burner tube to remove it 5 Reassemble new burner tube ADC PN 141137 in reverse procedure TO REPLACE THE IGNITOR PROBE 1 Discontinue power to the dryer 2 To remove the ignitor probe remove the two 2 screws that hold them to the burner box 3 When replacing ignitor probe remove screws disconnect high voltage HV wire from DSI module and remove the probe and high voltage HV wire from the ignitor 4 Replace new items in reverse procedure IMPORTANT DO NOT wrap the high voltage HV wire and flame probe wires together improper operation may result They may run along side each other IMPORTANT Make sure the gap from the ignitor to the top of the burner tube is 1 8 1 32 3 175 mm 0 79248 mm 18 C BURNER CONTROLS GAS The illustration below shows you the gas valve assembly and the gas chamber TO REPLACE MAIN BURNER ORIFICE 1 Discontinue power to the dryer 2 Remove back guard 3 Remove screws securing gas valve bracket to the burner box and remove the two 2 screws securing pipe bracket 4 Move the manifold assembly to the left and hold 5 Unscrew main burner orifice a
50. o Step 3 Check for loose connection at the microprocessor sensor bracket harness connector located in lint compartment and the microprocessor 9 position connector at the microprocessor controller computer Discontinue power to dryer Disconnect the microprocessor 9 position connector from microprocessor controller computer and locate connector holes 1 and 4 Disconnect sensor harness from sensor bracket assembly located in the lint compartment Check for continuity across each wire from harness connector in lint compartment J11 pins 1 and 2 to appropriate microprocessor 9 position connector 1 and 4 If no continuity problem is break in wire or bad termination from that 4 pin J11 connector through to the computer 9 position connector pins and 4 Also on the two 2 wires check for short to GND r o gt jejejejeje gt gt N 969008000 000000000 a uuuu 5 UERN uo0000009 O y i gt 006 If above procedures check out okay problem is a defective microprocessor temperature sensor 54 F dOOr DISPLAY CONDITION When the display reads dOOr this indicates that there is a fault open circuit somewhere in the microprocessor controller s computer s door switch circuit Include the door switch microprocessor controller computer
51. omputer or in the case of the door switch the input is functioning 1 dOOr L E D indicator should be on ALL the time even if the dryer is not running unless the main door is open or there is a problem open circuit in the main door switch circuit 2 MOTOR Output L E D Indicator if the dryer is started and the motor is not operating yet both the microprocessor controller computer display motor indicator dot and the dOOr input L E D indicator are on but the motor output L E D indicator is off then the fault is in the Phase 5 coin microprocessor controller computer itself Ifthe motor is not operating and the MOTOR output indicator is on then the problem is elsewhere i e external of the microprocessor controller computer 3 HEAT Output L E D Indicator If the dryer is started and there is no heat yet the microprocessor controller computer display heat circuit indicator dot is on but the output L E D indicator is off then the fault is in the Phase 5 coin microprocessor controller computer itself If both the display heat indicator dot and the heat output L E D indicator are on then the problem is elsewhere i e external of the microprocessor controller computer 48 NOTE Ifthe dryer is started the light emitting diode L E D display indicator dots are on and there are no outputs heat and or motor output L E D s are off and the dOOr input L E D is on the fault i
52. owchart u9uun9n nnr Ynn Yn An Y nono cconccconoconnnnnncconncnns 32 D Troubleshooting an lit iain 33 SECTION VII TROUBLESHOOTIN Gi sais 47 A UPhaseS Com System Diagnosis 2 dos 47 B No Heat Condition Blower is On ed ios 50 C NO Start Condition sisi ais 52 D Ne Display Condition ee eea a a e ed eed NER 53 ES SFE Display Conditio UE 54 E dOOr Display Condition std ias 55 SECTION VIII DATA LABEL INFORMATION iis ccssssssscsssdetsesagscncawacsacncanavenvecsandunacuccusssanssassdesvedads 56 Fon nie EF ee nee ES A 56 B Using MINIMA ai A ata cata 57 C Light Emitting Diode L E D Display Codes ooooooconocccococonoconcnonanconncconocano cono nonn noc nocnnnconn ccoo ncns 58 SECTION I IMPORTANT INFORMATION A SAFETY PRECAUTIONS 1 DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance 2 Purchaser and or user should consult the local gas supplier for proper instructions to be followed in the event the user smells gas The instructions should be posted in a prominent location 3 Dryer s must be exhausted to the outdoors 4 Although ADC produces a very versatile dryer there are some articles that due to fabric composition or cleaning method should not be dried in it WARNING Dry only water washed fabrics DO NOT dry articles spotted or washed in dry cleaning solvents a combustible detergent or all purpose cleaners EXPLOSION COULD R
53. r flame probe assembly consists of a ceramic l insulated ignitor electrode a ground rod and a ceramic l insulated flame probe electrode The gap between the f ignitor spark electrode and the ground rod is set and must be maintained at 1 8 1 32 3 175 mm Alk 0 79248 mm When the DSI module provides the iN high voltage synchronous spark 14 000 volts through the high voltage HV wire lead a spark is produced over the gap When this spark is produced the gas valve is opened Upon ignition the resistance in the flame probe electrode of the ignitor flame probe assembly changes No and the information is sent to the DSI module via the sensor BF probe lead connection to the module Once the resistance is changed and sensed the DSI module will sustain the pypicat DIRECT SPARK IGNITION DS vey sys IGNITOR 7 FLAME PROBE ASSEMBLY PB 12 14 99 gas flow provide 24 VAC power to the gas valve 30 d The Direct Spark Ignition DSI 24 VAC gas valve s used are of the redundant type which means the gas valve is actually two 2 gas valves in one 1 one 1 in series with the other This is a safety feature which provides protection against gas flow in the event of a failure of one 1 of the valves to seat properly Other features are that the gas valves have a manual shutoff a pressure tap outlet and are designed for easy conversion to regulated liquid propane
54. ric service for your particular model GAS MANIFOLD PRESSURE for GAS DRYERS This describes the manifold pressure taken at the gas valve tap APPLICABLE APPROVAL SEAL S LE Canadian Standards Association International B USING AMANOMETER HOW TO USE A MANOMETER ADC PN 122804 With dryer in nonoperating mode remove plug on the gas valve pressure tap 2 Attach plastic tubing to pressure tap Fitting is supplied with manometer refer to the illustration 3 Attach manometer to dryer using magnet NOTE Place manometer in a position so that readings can be taken at eye level 4 Fill manometer as shown in illustration to the zero level DN Start dryer With burner on take a reading i i E p am Saree 1 8 NPT FITTING gt J gt a Read water level at the inner tube Readings should be taken YN at eye level ie za 1 b Correct readings should be Natural Gas 3 5 Inches 8 7 mb W C v s tee L P Gas 10 5 Inches 26 1 mb W C If water column pressure is incorrect refer to TO ADJUST GAS PRESSURE on page 20 ourer tuee Reverse procedure for removing manometer 57 C LIGHT EMITTING DIODE L E D DISPLAY CODES A Automatic Cycle Slope Program Factor ACOn Accumulative Coin Adrt Maximum Auto Dryness Time AFAt Amount For Additional Time AGt Active Anti Wrinkle Guard Time Atln Accumulative Time AtSt Amount Start AUtO Automatic Mode Patent No
55. s in the Phase 5 microprocessor controller computer itself Ifthe L E D display indicators are on and the door L E D input and motor heat output L E D s are on the motor and or heat is not active on then the problem is not the door switch circuit or the Phase 5 coin microprocessor controller computer the problem is elsewhere in the dryer L E D DISPLAY INDICATORS The L E D indicator dots located at the top portion of the L E D display refer to the illustration below indicate the Phase 5 coin microprocessor controller computer output functions while a cycle is in progress These dots DO NOT necessarily mean that the outputs are functioning They are only indicating that the function output should be active on 1 Heat Circuit Indicator indicator dot is on whenever the Phase 5 coin microprocessor controller computer is calling for the heating circuit to be active ON 2 Motor Circuit Indicator indicator dot is on whenever a cycle is in progress 49 Ot t a a if TOT TTT TTT TTT ATT TTT TTT lo le HL y e e di a i OO is cen TG H Las 0 0 Mt Oy C 00 UI 9 I 00 r i Ep DOOR INPUT L ED tf 00 2 cio A s li A a i RS 3 26
56. s or transparent plastic tube with a scale graduated in inches When it is filled with water and pressure is applied the water in the tube rises showing the exact water E column pressure WARNING Test ALL connections for leaks by brushing on a soapy water solution NEVER TEST FOR LEAKS WITH A FLAME 40 a Connect water column W C test gauge manometer to the gas valve pressure tap 1 8 N P T b Start the dryer with the burner on the correct water column reading in inches should be Natural Gas cooocccnoccnoccnnonnnanonnnnonaos 3 5 inches 8 7 mb water column Liquid Propane L P Gas 10 5 inches 27 4 mb water column When a gas dryer is first started during initial time of installation or start up it has a tendency not to ignite on the first ignition attempt This is due to the fact that the gas supply piping is filled with air so it may take a few minutes for the air to be purged from the supply lines During this purge period there may be insufficient gas pressure for ignition which might cause the Direct Spark Ignition DSI module to go into the LOCKOUT mode the light emitting diode L E D will BLINK GREEN CONTINUOUSLY NOTE During the purge period check to be sure that ALL gas shutoff valves are open NOTE To reset the DSI module if it is in the LOCKOUT mode open and close the main door then restart the dryer 2 Ignitor Flame Probe Assembly Adjustments The
57. shutoff valves and test for leaks IMPORTANT DO NOT test for leaks with an open flame Use soapy water solution or a product intended for that purpose 11 Operate dryer through one 1 complete cycle to insure proper operation IMPORTANT Conversion should be performed by competent technicians in accordance with local and state codes Improper assembly or adjustment can cause hazardous conditions NOTE There is no regulator provided in a liquid propane L P dryer The water column pressure must be regulated at the source L P tank or an external regulator must be added to each dryer 12 Call American Dryer Corporation for L P conversion kits or the proper orifices for natural or L P gas 21 TO REPLACE DIRECT SPARK IGNITION DSI MODULE 290 THERMOSTAT 1 Discontinue power to the dryer 2 Remove the back guard 3 Remove the wires connected to the terminal strip at the bottom of the module 4 Remove the four 4 nuts securing the module to the mounting bracket 5 Replace module by reversing process NOTE Take note of where wires are for installing the new module D THERMOSTATS AND TEMPERATURE SENSOR TO REPLACE HI LIMIT THERMOSTAT 290 This thermostat is an important safety device serving as an added protection against failure of the airflow sail switch to open in the event of a motor failure or reduced airflow condition IMPORTANT UNDER NO CIRCUMSTANCES should the heat circuit safety d
58. stablished sensed but then lost flame out due to possible air turbulence the Direct Spark Ignition DSI module will wait 30 seconds then restart the ignition sequence IMPORTANT The DSI module is a precision instrument and should be handled carefully Rough handling or distorting components could cause the module to malfunction WARNING THE DSI MODULE IS NOT FIELD REPAIRABLE 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 b The 24 VAC transformer is designed to step down the operating primary voltage of the dryer from 120 VAC 208 VAC or 240 VAC to the 24 VAC secondary voltage which is necessary to operate the DSI system and in some cases the controls of the dryer The transformer has multi primary taps which allow for one 1 transformer to be used for any voltage application L including 120 volts 208 volts or 240 volts Refer to the e Service Information Section of this manual for specific TRS 1 transformer and wiring termination information Nee 1 c The ignitor flame sensor assembly is located in the burner flame area and is used to ignite the gas by the use of a high volt HV 14 000 synchronous spark and to provide feedback information to the DSI module as to whether the burner flame is evident on 24 VAC Transformer The ignito
59. t conform to the applicable requirements of the National Fuel Gas Code ANSI Z223 1 LATEST EDITION or in Canada the Canadian Installation Codes CAN CGA B149 1 M91 Natural Gas or CAN CGA B149 2 M91 Liquid Propane L P Gas or LATEST EDITION 4 Gas Supply The gas dryer installation must meet the American National Standard National Fuel Gas Code ANSI Z2231 LATEST EDITION or in Canada the Canadian Installation Codes CAN CGA B149 1 M91 Natural Gas or CAN CGA B149 2 M91 L P Gas or LATEST EDITION as well as local codes and ordinances and must be done by a qualified professional 5 Piping Connections ALL components materials must conform to National Fuel Gas Code Specifications ANSI Z223 1 LATEST EDITION or in Canada CAN CGA B149 1 M91 Natural Gas or CAN CGA B149 2 M91 L P Gas or LATEST EDITION for General Installation and Gas Plumbing as well as local codes and ordinances and must be done by a qualified professional It is important that gas pressure regulators meet applicable pressure requirements and that gas meters be rated for the total amount of ALL the appliance Btus being supplied The dryer must be connected to the type of gas natural or liquid propane L P indicated on the dryer data label If this information does not agree with the type of gas available contact the reseller who sold the dryer or contact the ADC factory The gas input ratings shown on the dryer data label are for elevations up to 2 0
60. 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 Direct Spark Ignition DSI Module diagnostic information The DSI module allows for a continuous spark burst of three 3 8 second durations Ifa 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 29 The module also provides for safe proof of ignition If a flame is not sensed by the flame probe electrode of the ignitor flame probe assembly within a specified time frame the module will de energize the gas valve and the ignitor flame probe assembly and go into the LOCKOUT mode If a flame is e
61. the coin acceptor to the panel Unplug optic switch harness connector Pull coin acceptor out gently Reverse procedure for installing new acceptor 16 TO REMOVE OPTIC SWITCH 1 2 Da 6 TO REPLACE MOTOR CONTACTOR 2 POLE 24 VAC Disconnect power to the dryer Remove top or bottom coin panel Remove optic switch from the coin acceptor one 1 screw Unplug optic switch connector Remove optic switch from the dryer Reverse procedure for installing new optic switch 1 2 S 6 TO REPLACE GAS VALVE Discontinue power to the dryer Remove back guard Remove ALL wires from contactor NOTE Make sure each wire is marked with location removed from To remove the contactor push up and pull the contactor towards you Install new contactor in reverse procedure Reestablish power to the dryer 1 2 Discontinue power to the dryer Remove back guard Close the union shutoff located just before the gas valve and remove the two 2 wires on top of the gas valve Break and loosen union nut between union shutoff and gas valve Remove the four 4 screws holding the two 2 pipe brackets on each side of the gas valve Remove gas valve and manifold still attached from dryer Remove the single port manifold from the output side of the gas valve Remove the union tailpiece and nut from the input of valve A 1 2 Allen wrench is required Reverse procedure for installi
62. ues listed above 96 ohms for both readings then the gas valve must be replaced ADC PN 128927 5N7 REDUNDANT GAS VALVE 45 DIRECT SPARK IGNITION DSI SYSTEM COMPONENTS DIRECT SPARK IGNITION DS IGNITOR PROBE ASSEMBLY KIT 24 VAC DIRECT SPARK IGNITION DSD G760 DIRECT SPARK MODULE TRANSFORMER ADC PN 128935 ADC PN 141403 46 SECTION VII TROUBLESHOOTING The information provided will help isolate the most probable components associated with the difficulty described The experienced technician realizes that a loose connection or broken or shorted wire may be at fault where electrical components are concerned however not necessarily the suspected component itself Electrical parts should always be checked for failure before returned to the factory The information provided should not be construed as a device for use by an untrained person in making repairs Only properly licensed technicians should service the equipment Observe ALL safety precautions displaced on the equipment or specified in this manual while making repairs A PHASE 5 COIN SYSTEM DIAGNOSIS ALL major circuits including door microprocessor temperature sensor heat and motor circuits are monitored The Phase 5 coin microprocessor controller computer will inform the user by the light emitting diode L E D display of certain failure codes along with indicators both in the L E D display at the outputs of ea
63. ve the connector from the bracket Disconnect the two 2 wires going to the 225 hi limit The sensor probe assembly can now be removed from the bracket f Install new probe assembly ADC PN 880251 by reversing procedure 23 E SAIL SWITCH ASSEMBLY The sail switch is a heat circuit safety device which controls the heat circuit only When the dryer is operating and there is proper airflow the sail switch damper pulls in and closes the sail switch providing ALL the other heat related circuits are functioning properly If an improper airflow occurs the sail switch damper will release and the circuit will open IMPORTANT UNDER NO CIRCUMSTANCES should heat circuit safety devices ever be disabled TO REPLACE SAIL SWITCH 1 Discontinue power to the dryer 2 Remove the two 2 screws which hold the sail switch to the bracket NOTE Becareful not to drop or lose the twin speed nut on the backside of the sail switch 3 Disconnect the two 2 connectors on the sail switch 4 Reverse this procedure for installing new sail switch Adjust sail switch as described in the next section TO ADJUST SAIL SWITCH 1 Operate the installed dryer normally to verify that the heat system is fully operational 2 Open the main dryer door 3 Manually depress the door switch actuator 4 While continuing to depress the door switch actuator and with the door open start the dryer 5 Ifthe heat system is not a

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