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American Dryer Corp. MDG-50 User's Manual

1. SPIN TIME Adjustment Position Number 1 2 3 4 5 Time in Seconds 30 60 90 120 150 DWELL STOP TIME Adjustment Position Number 1 2 3 4 5 Time in Seconds 5 6 3 7 6 8 9 102 Values shown are 1 second 48 SECTION X PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS 1 Microprocessor computer Board a Upon completing installation of the replacement microprocessor computer board reestablish power to the dryer b Start the drying cycle c Verify that the motors and the heat indicator dots in the microprocessor computer L E D light emitting diode display are on Refer to the illustration below AN2162 M d Verify that motors heat and door indicator lights on the back side of the microprocessor computer board are lit Refer to illustration below 1 TITO ATT Tat T E A2 USUS S a TES A H gt i o QU Neue DA i 4 de SN co EE ULL 9 1 je Ul e e e e a pmo u e e ale e gt ii eee Ner Lies e Vl Y AJET IEA MTI E e Open main door The dryer must stop and ALL output indicator lights on the back side of the microprocessor computer board must go
2. 8 B Location odo otc roti e dh sta a tutu eaten eats ety et ne 9 C Dryer Enclosure Requirements dida ee cen aste irse idus 10 D Fresh Air Supply 11 E Exhaust Requirements bebe Pos ed EL Pe Ed e De idi eet PU loqui terres 12 F Electrical Mformation n os tac co ecu oie o uae Meer aS 18 G Gas Into anzito MR i 23 Preparation For Operation atid Start Up ccc ont aed ove ot ane edie 27 I 28 J Preoperational Instructions oe deco o tere PY YER 20 K Sh t DowitInstr cHOls ho praesto ote or toit asa Ioa eb ies ped 32 SECTION IV SERVICE and PARTS INFORMATION 33 PM PN RN M Cp 33 B PACS nn ea ise ota a Gi La Sn MO os 33 SECTION V WARRANTY INFORMATION sise 34 Warranty Cards incen nat ane be pesti 34 SECTION VI ROUTINE MAINTENANCE 35 ER TR EE RE 35 Bs Adjustments acd sopa eben en eds di lads osi nt te ee 36 Ge m 36 SECTION VII TROUBLESHOOTING ste Ne 37 Microprocessor Computer Models
3. be sure that when screws are used they do not restrict the operation both opening and closing ofthe damper NOTE Whenthe exhaust duct passes through a wall ceiling or roof made of combustible materials the opening must be 2 inches larger all the way around than the duct The duct must be centered within this opening To protect the outside end of horizontal duct work from the weather a 90 elbow bent downward should be installed where the exhaust exits the building If the duct work travels vertically up through the roof it should be protected from the weather by using a 180 turn to point the opening downward In either case allow at least twice the diameter of the duct between the duct opening and the nearest obstruction i e roof or ground level IMPORTANT DO NOT use screens or caps on the outside of opening of exhaust duct work IMPORTANT Exhaust back pressure measured by a manometer at the dryer exhaust duct area must not exceed 0 3 inches of water column W C SINGLE DRYER VENTING HORIZONTAL VENTING When horizontal single 8 inch venting is used the duct work to the outlet cannot exceed 30 feet refer to A below This calculation of 30 feet compensates or allows for the use of a maximum of only one 1 elbow which is the outside outlet protection Illus A EN 13 VERTICAL VENTING When vertical single 10 inch venting is used refer to Illus B below the
4. 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 9 UNDER NO CIRCUMSTANCES should the dryer door switches lint drawer switch or heat safety circuit ever be disabled 10 This dryer is not to be used in the presence of dry cleaning solvents or fumes 11 Remove articles from the dryer as soon as the drying cycle has been completed WARNING Articles left in the dryer after the drying and cooling cycles have been complete can create a fire hazard 12 READ and FOLLOW ALL CAUTION and DIRECTION LABELS ATTACHED TO THE DRYER WARNING 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 13 For safety proper operation and optimum performance the dryer must not be operated with a load less than sixty six percent 66 33 pounds 15 kg of its rated capacity SECTION I SPECIFICATIONS A SPECIFICATIONS MAXIMUM CAPACITY Dry WEIGHT 50 Ibs 22 7 kg BASKET TUMBLER DIAMETER 32 3 4 83 2 cm BASKET TuMBLER DEPTH 37 1 2 95 3 cm BASKET TUMBLER MOTOR 3 4 HP 0 560 kw DOOR OPENING DIAMETER 21 1 2 54 61 cm BASKET TuMBLE
5. a Microprocessor computer dryers 1 TheL E D light emitting diode display will read FILL 3l 2 Press the E on the touch pad of the keyboard 3 The L E D light emitting diode display will quickly show Ld30 LC04 F180 The dryer will start and the L E D light emitting diode display will show dr30 b Dual Timer Dryers 1 Turn drying timer knob for a time of 20 minutes 2 Select High Temp 3 Push Push To Start switch 4 To stop dryer open the main door K SHUT DOWN INSTRUCTIONS If the dryer is to be shut down taken out of service for a period of time the following MUST BE performed 1 Discontinue power to the dryer either at the external disconnect switch or the circuit breaker 2 Discontinue the heat supply a Discontinue the gas supply 1 SHUT OFF external gas supply shut off valve 2 SHUT OFF internal gas supply shut off valve located in the gas valve burner area 32 SECTION IV SERVICE and PARTS INFORMATION A SERVICE 1 Only competent or trained technicians should service the dryer If service is required contact the distributor from whom the Maytag Company equipment was purchased If the distributor cannot be contacted or is unknown contact the Maytag Company Service Department for a distributor in your area B PARTS 1 Replacement parts should be purchased from the distributor from whom the Maytag Company equipment was purchased If the distributor cannot be
6. are thermal magnetic industrial type ONLY For others calculate verify correct breaker size according to appliance amp draw rating and type of breaker used C Circuit breakers for dryers must be 3 pole type APPROX SERVICE PHASE WIRE AMP DRA CIRCUIT VOLTAGE E SERVICE 60 Hz IE BREAKER 120 lo 2 12 25 208 lo 2 7 15 240 lo 2 4 15 208 3o 3 3 15 240 3o 3 3 3 15 380 400 3o 3 4 2 15 416 3o 3 4 2 15 460 480 3o 3 4 2 15 IMPORTANT Figures shown are for non reversing models ONLY For reversing models contact the factory IMPORTANT The dryer must be connected to the electric supply shown on the data label that is affixed to the back side of the upper or top control door In the case of 208 VAC or 230 240 VAC the supply voltage must match the electric service specifications of the data label exactly IMPORTANT The wire size must be properly sized to handle the related current WARNING 208 VAC and 230 240 VAC ARE NOT THE SAME Any damage done to dryer components due to improper voltage connections will automatically VOID THE WARRANTY NOTE Manufacturer reserves the right to make changes in specifications at any time without notice or obligation 22 G GAS INFORMATION Itis your responsibility to have ALL plumbing connections made by a qualified professional to assure that the gas plumbing installation is adequate and conforms with local and state
7. computer display continues to read time or percent of extraction and all indicator dots are off 1 Fault in main door switch circuit a Failed main door switch b Main door switch out of adjustment c Loose connection in door switch circuit Microprocessor computer display reads dSFL 1 Fault in microprocessor heat sensing circuit a Failed microprocessor temperature sensor b Failed microprocessor controller computer c Broken wire or connection somewhere between the microprocessor controller computer and the microprocessor temperature sensor Microprocessor controller computer display reads door 1 Fault open circuit in door switch circuit a Failed main door switch b Broken connection or wire in main door circuit 2 Failed 24 VAC transformer Microprocessor controller computer will not accept any keyboard entries i e L E D light emitting diode display reads FILL and when keyboard entries are selected the L E D display continues to read FILL 1 Failed keyboard label touch pad assembly 2 Failed microprocessor controller computer Microprocessor controller will only accept certain keyboard entries 1 Failed keyboard label touch pad assembly 2 Failed microprocessor controller computer 39 M Microprocessor controller computer locks up and L E D light emitting diode display reads erroneous messages or only partial segments 1 Transient power voltage spikes disconne
8. connection of the dryer to a grounded cold water pipe DO NOT ground to a gas pipe or hot water pipe The grounded cold water pipe must have metal to metal connection all the way to the electrical ground If there are any nonmetallic interruptions such as a meter pump plastic rubber or other insulating connectors they must be jumped out with no 4 copper wire and securely clamped to bare metal at both ends IMPORTANT For personal safety and proper operation the dryer must be grounded Provisions are made for ground connection in each dryer at the electrical service connection area 4 Electrical Connections A wiring diagram is located inside the control box for connection data NOTE A CIRCUIT SERVING EACH DRYER MUST BE PROVIDED 1 Single Phase 10 Wiring Connections and Hookup The electrical input connections on ALL single phase l dryers are made into the rear service box lo cated at the upper left area of the dryer TRIC SERVICE BOX COVER SINGLE PHASE 10 ELECTRICAL CONNECTIONS LEADS Black White Green Positive Neutral Ground or 12 If local codes permit power to the dryer can be made by the use of a flexible U L listed power cord or pigtail wire size must conform to rating of dryer or the dryer can be hard wired directly to the service breaker panel In both cases a strain relief must be installed where the wi
9. contacted or is unknown contact the Maytag Company for a distributor in your area NOTE When ordering replacement parts from the Maytag Company dealer or the Maytag Company be sure to give them the correct model and serial numbers so that your parts order can be processed in an expeditious manner 33 SECTION V WARRANTY INFORMATION A RETURNING WARRANTY CARDS 1 Before any dryer leaves the manufacturer a warranty card is affixed to the glass of the main door These warranty cards are intended to serve the customer as a record installation date of that specific dryer so as to extend the customer s warranty period IMPORTANT A separate warranty card must be completed and returned for each individual 2 For specific warranty information on your dryer contact the Maytag distributor who sold you the dryer or call the Maytag Co at 515 787 7000 34 SECTION VI ROUTINE MAINTENANCE A CLEANING A program or schedule should be established for periodic inspection cleaning and removal of lint from various areas of the dryer as well as throughout the duct work 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 air flow If the guidelines in this section are met an the manufacturer dryer will provide many years of efficient trouble free and most importantly safe oper
10. kcal hr 1 Natural Gas Regulation is controlled by the dryer s gas valve s internal regulator Incoming supply pressure must be consistent between a minimum of 6 0 inches and a maximum of 12 0 inches water column W C 2 wa ressure Liquid Propane L P Gas Dryers made for use with L P gas have the gas valve s internal pressure regulator blocked open so that the gas pressure must be regulated upstream of the dryer The pressure measured at each gas valve pressure tap must be a consistent 10 5 inches water column W C There is no regulator or regulation provided in an L P dryer The water column W C pressure must be regulated at the source L P tank or an external regulator must be added to each dryer Type oF Gas Liquid Propane FE L P BT MODEL a cur kcal hr Natural Liquid Propane Conversion Kit NUMBER Rating Part Part part Number Rating Qty D M S Nubes Qty D M S Number MDG 50 130 000 32 760 2 25 140853 2 43 140809 874044 Drill Material Size D M S equivalents are as follows Natural Gas Liquid Propane Gas 43 0 1495 3 7973 mm 0 0890 2 2606 mm 24 3 Piping Connections ALL components and materials must conform to National or Canadian Gas Code specifications It is important that gas pressure regulators meet applicable pressure requirements and that gas meters be rated for the total amount
11. motor contactor relay 2 Failed arc suppressor A S board for Reversing Models ONLY 3 Failed microprocessor controller computer D Drive motor operates okay for a few minutes and then stops and will not restart 1 Motor is overheating and tripping out on internal overload protector a Motor air vents clogged with lint b Low voltage to the motor c Failed motor d Basket tumbler is binding check for obstruction e Failed idler bearings or tumbler bearings E Blower motor not operating does not start 1 Failed blower motor contactor relay 2 Failed arc suppressor A S board for Reversing Models ONLY 3 Failed motor 4 Failed microprocessor controller computer Blower motor operates okay for a few minutes then stops and will not restart 1 Motor is overheating and tripping out on internal overload protector a Motor air vents clogged with lint b Low voltage to the motor c Failed motor d Failed out of balance impellor fan G Both drive motor and blower motor not operating do not start microprocessor controller computer motor indicator dots are on 1 Fault in main door switch circuit 2 Blown fuse 2 amp very fast acting fuse if applicable 38 3 Failed arc suppressor A S board for Reversing Models ONLY 4 Failed microprocessor controller computer 5 Failed 24 VAC transformer Both drive motor and blower motor run a few minutes and then stop microprocessor controller
12. of ALL the appliance BTU s being supplied The dryer is provided with a 1 2 N P T inlet pipe connection located at the upper rear area of the dryer The minimum pipe size supply line to the dryer is 1 2 N P T For ease in servicing the gas supply line of each dryer must have its own shut off valve The size of the main gas supply line header will vary depending on the distance this line travels from the gas meter or in the case of L P liquid propane gas the supply tank other gas operated appliances on the same line etc Specific information regarding supply line size should be determined by the gas supplier NOTE Undersized gas supply piping can create a low or inconsistent pressure which will result in erratic operation of the burner ignition system GAS WATER HEATERS Ys GAS SHUT OFF VALVES NBN P wii NE Raub d N LINE PRESSURE REGULATOR IF NATURA SSURE WATER COLUMN PRESSURE GAS METER TYPICAL NATURAL GAS INSTALLATION GAS SERVICE LINE TAP g GAS WATER HEATERS GAS SHUT OFF VALVE O NF N PD PA lt AON YS LP SUPPLY TANK MANO132 25 Consistent gas pressure is essential at ALL gas connections It is recommended that a 3 4 inch pipe gas loop be installed in the supply line serving a bank of dryers An in line pressure regulator must be installed in the gas supply line header if the natural gas pressure exceeds 12 0 inches of w
13. on electric power to the dryer 2 Refer to the Operating Instructions for starting your particular model dryer 3 When a gas dryer is first started during initial start up it has a tendency not to ignite on the first ignition attempt This is because the gas supply piping is filled with air so it may take a few minutes for the air to be purged from the lines NOTE During the purging period check to be sure that ALL gas shut off valves are open NOTE Dryers are equipped with a Direct Spark Ignition DSI system which has internal diagnostics Ifignition is not established after one 1 time the heat circuit in the DSI module will lock out until it is manually reset To reset the DSI Direct Spark Ignition system open and close the main door and restart the dryer a A gas pressure test should be taken at the gas valve pressure tap of each dryer to assure that the water column W C pressure is correct and consistent NOTE Water column W C pressure requirements measured at the pressure tap of the gas valve body Natural Gas 3 5 Inches Water Column W C Liquid Propane L P Gas 10 5 Inches Water Column W C IMPORTANT There is no regulator provided in an 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 4 Make a complete operational check of ALL safety related circuits a Door Switches b Hi Limit thermostats c Cyc
14. out Refer to illustration on previous page page 57 f Try to restart the dryer with the main door open g The microprocessor computer board s L E D display must read DOOR h Close the main door and restart the dryer i Functional check of microprocessor computer board is complete 2 Direct Spark Ignition DSI System a Upon completing installation of the replacement Direct Spark Ignition DSI module reestablish power to the dryer American Dryer Corp P N 680815 b Start the drying cycle I ec ously disco nds anc r rec ndica N continuously repl ontrol N c The ignition DSI Direct Spark Ignition module s GERNE v L E D light emitting diode indicator will light red for up to approximately 1 5 seconds pre purge time On d The module s indicator light will then turn green WARNING Disconnect Power Before Servicing The gas valve will be energized and the ignitor probe FIELD REPAIRABLE Exec will spark for approximately 8 seconds The burner a May Result flame should now be established Serious Injury e With the burner flame on remove the flame sensor wire from the FS terminal of the DSI Direct vA Spark Ignition module M M F V DAN C P M p f The burner flame must shut off and the ignition module must lock out with the DS
15. three 3 temperature selection buttons is again depressed c Once the preprogrammed dryness level and cool down period has been reached or the maximum automatic time has expired whichever comes first the tone buzzer will sound for five 5 seconds and the L E D light emitting diode display will read donE at which time the dryer will shut off NOTES 1 Iftheanti wrinkle program is active the L E D light emitting diode display will continue to read donE and the microprocessor controller computer will proceed through the anti wrinkle program until the maximum Active Guard Time has expired or until the door is opened whichever comes first The L E D light emitting diode display will read FILL or Amount to Start Ifthe anti wrinkle program is not active or in use the L E D light emitting diode display will read FILL or FrEE 4 Non Microprocessor Computer Models a Turn power on to the dryer b Insert coins rotary meter type ONLY c Select temperature by using rocker switch and selecting HI TEMP LO TEMP or PERM PRESS d Press Push to Start button to start the cycle e Upon completion of the drying and cooling cycles the dryer will shut off NOTE Ifthe door is opened during a cycle both the heat and motor will stop Continuation ofthe cycle will only resume after the door has been closed and the Push to Start button is pressed MopDELs 1 To start the dryer
16. EN SHOULD BE SUPERVISED IF NEAR DRYERS IN OPERATION FOR YOUR SAFETY DO NOT DRY MOP HEADS IN THE DRYER DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES WARNING UNDER NO CIRCUMSTANCES should the door switch or the heat circuit devices ever be disabled WARNING The dryer must never be operated with any of the back guards outer tops or service panels removed PERSONAL INJURY or FIRE COULD RESULT WARNING DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER and 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 and operator s manual included with the dryer Dryers must not be installed or stored in an area where it will be exposed to water or weather The wiring diagram for the dryer is located in the front electrical control box area Table of Contents SECTION I IMPORTANT INFORMATION 3 Receiving amd Handling ME Penn ne de ten dignes te dans ion loca 3 B Safety PRC AU NOS wi oc diua ne nn eat ne ds 4 SECTION II SPECIFICA TIONS dm 6 Polit P 6 SECTION III INSTALLATION PROCEDURES e ao oos raso SIS serra eere aa eiua vo 8 A Unpackimis and e bes aesti t bahay tas cues
17. I Direct Spark ui Ignition module s indicator light red MAN2443 g Stop the drying cycle with the flame sensor wire still removed restart the drying cycle h The ignition module must proceed through the pre purge with the indicator light red the ignition trial time of approximately 8 seconds with the indicator light green and then proceed to lock out i Functional check of the Direct Spark Ignition DSI Module is complete 1 Replace the flame sensor wire from the FS terminal to the DSI module 50 MAYTAG Part No 113067 1 01 12 99 150 2 03 26 99 150 3 12 15 99 150 4 01 19 00 150 5 03 03 00 150 6 10 30 00 150
18. Installation and service must be performed by a de gaz appelez le service des incendies qualified installer service agency or the gas supplier L installation et l entretien doivent tre assur s par un installateur ou un service d entretien qualifi ou par le fournisseur de gaz MAYTAG For replacement parts contact the distributor from which the dryer was purchased or contact Maytag Co 403 West Fourth St North Newton Iowa 50208 515 787 7000 122298SL cj Part No 113067 Retain This Manual In A Safe Place For Future Reference Our 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 and operator s 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 SECURITE Do not store or use gasoline or Ne pas entreposer ni utiliser d essence g other flammable vapors or liquids ni d autres vapeurs ou liquides in the vicinity of this or any other inflammables dans le voisinage de cet appliance appareil ou de yout autre appareil We have tried to make this manual as complete as possible and hope you will find it useful Manufactur
19. MDG 50 Installation Manual WARNING For your safety the AVERTISSEMENT Assurez vous de bien information in this manual must be suivre les instructions donn es dans cette followed to minimize the risk of fire or notice pour r duire au minimum risque explosion or to prevent property damage d incendie ou d explosion ou pour viter tout personal injury or death dommage mat riel toute blessure ou la mort Do not store or use gasoline or other flammable Ne pas entreposer ni utiliser d essence ni vapor and liquids in the vicinity of this or any d autres vapeurs ou liquides inflammables dans other appliance le voisinage de cet appareil ou de tout autre appareil WHAT DO YOU DO IF YOU SMELL GAS QUE FAIRE SI VOUS SENTEZ UNE ODEUR Do not try to light any appliance DE GAZ Do not touch any electrical switch do not use any phone in your building Ne pas tenter d allumer d appareil Clear the room building or area of all Ne touchez aucun interrupteur Ne pas occupants vous servir des t l phones se trouvant dans Immediately call your gas supplier from a le b timent o vous vous trouvez neighbor s phone Follow the gas supplier s vacuez la pi ce le b timent ou la zone instructions Appelez imm diatement votre fournisseur de If you cannot reach your gas supplier call the gaz depuis un voisin Suivez les instructions fire department du fournisseur Si vous ne pouvez rejoindre le fournisseur
20. R VOLUME 18 3 cu ft 0 518 cu m DRYERS PER 20740 CONTAINER 10 20 DRYERS PER 45748 TRUCK 24 26 VOLTAGE AVAILABLE 120 460v 10 35 3 4w 50 60 Hz APPROX WEIGHT UNCRATED 601 165 272 6 kg APPROX WEIGHT CRATED 646 lbs 293 kg U HEAT INPUT 130 000 btuh 32 760 kcal hr AIRFLOW 600 cfm 17 cmm INLET PIPE CONNECTION 1 2 INEST 50 Ibs reversing dryer available with 36 motors standard with 1 2 HP motors Sizeof piping to dryer varies with installation conditions Contact factory for assistance Specifications MDG 50 NOTE Manufacturer reserves the right to make changes in specifications at any time without notice or obligation SECTION III INSTALLATION PROCEDURES 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 Na tional 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 L P Gas or LATEST EDITION for General Installation and Gas Plumbing or Canadian Electrical Codes Parts 1 amp 2 CSA C22 1 1990 or LATEST EDI TION for Electrical Connections A UNPACKING and SETTING UP Remove protective shipping material 1 e plastic wrap and op
21. RTANT A separate circuit servicing each dryer must be provided 2 Electrical Service Specifications a Electric Service IMPORTANT The dryer must be connected to the electric supply shown on the data label that is affixed to the back side of the upper or top control door In the case of 208 VAC or 230 240 VAC the supply voltage must match the electric service specifications of the data label exactly accordance with electric codes for making service connections WARNING 208 VAC and 230 240 VAC ARE NOT THE SAME Any damage done to dryer components due to improper voltage connections will automatically VOID THE WARRANTY NOTE On gas dryers to convert from 208 VAC to 240 VAC or visa versa the 24 VAC transformer wiring sequence must be changed 18 NOTE Component failure due to improper voltage application will VOID THE WARRANTY 3 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 Electric Code ANSI NFPA NO 70 LATEST EDITION or in Canada Canadian Electrical Codes Parts 1 amp 2 CSA C22 1 1990 or LATEST EDITION for Electrical Connections The ground connection may be to a proven earth ground at the location service panel For added personal safety when possible it is suggested that a separate ground wire no 18 minimum be connected from the ground
22. ST DUCT AT A 45 ANGLE 2 X D CLEARANCE UY 218 IMPORTANT MORE THAN 4 DRYERS CAN BE CONNECTED TO ONE COMMON DUCT VENT j NOTE A OPENING MUST BE TWO 2 INCHES LARGER THAN DUCT ALL THE WAY AROUND THE DUCT MUST BE CENTERED WITHIN THIS OPENING VERTICAL VENTING ILLus D 1 MULTIPLE DRYER VENTING VERTICAL WITH AN A DIAMETER EXHAUST CONNECTIONS AT COMMON DUCT NO OF DRYER MINIMUM CROSS DIA SECTION AREA SQN 256 219 164 80 MINIMUM ROUND DUCT DIAMETER IN 18 16 14 10 ES ul 2 x D CLEARANCE INSPECTION DOORS 4x TO INDIVIDUAL TUMBLERS P J SEE NOTE B TUMBLER EXHAUST MUST ENTER MAIN FOR MINIMUM DISTANCES WALL EXHAUST DUCT A 45 ANGLE BETWEEN DUCTS s d MINIMUM DUCT SIZE amp J IMPORTANT NO MORE THAN 4 DRYERS CAN BE CONNECTED TO ONE COMMON DUCT VENT OPENING MUST BE TWO 2 INCHES LARGER THAN DUCT ALL THE WAY AROUND THE DUCT MUST BE CENTERED WITHIN THIS OPENING NOTE B AD 50 34 4 4 NOTE A FORMULAS CALCULATE DUCTING CROSS SECTIONAL AREA CROSS SECTIONAL AREA OF A ROUND DUCT 785 x DIAZ ee HEIGHT CROSS SECTIONAL AREA OF A RECTANGULAR DUCT WIDTH x HEIGHT WIDTH H 16 10 11 12 13 14 IMPORTANT VENTING REMINDERS Duct work size and installation should be d
23. ark Ignition DSI module ON Mw Failed gas valve 40 3 Fault in lint chamber sensor bracket hi heat protector thermostat 4 Failed Direct Spark Ignition DSI module 5 Failed DSI Direct Spark Ignition ignitor and flame probe assembly 6 Failed microprocessor controller computer Q Dryer operates but is taking too long to dry 1 Exhaust duct work run too long or is undersized back pressure cannot exceed 3 inches water column W C 2 Restriction in exhaust a Exhaust back draft damper is sticking partially closed b Restriction in duct work check duct work from dryer all the way to the outdoors 41 Q Dryer operates but is taking too long to dry 5 1 8 9 Exhaust duct work run too long or is undersized back pressure cannot exceed 3 inches water column W C Restriction in exhaust a Exhaust back draft damper is sticking partially closed b Restriction in duct work check duct work from dryer all the way to the outdoors Low or inconsistent gas pressure Insufficient makeup air Poor air and gas mixture at burner yellow or poor flame pattern adjust gas burner air adjustment shutters Lint screen not being cleaned on regular basis Extractors washers not performing properly Sail switch is fluttering restriction in exhaust Failed microprocessor controller computer temperature calibration is inaccurate 10 Failed microprocessor temperature sensor calibration
24. ater column pressure Refer to the illustrations on the previous page page 25 NOTE A water column test pressure of 3 5 inches for natural gas and 10 5 inches for L P liquid propane dryers is required at the gas valve pressure tap of each dryer for proper and safe operation 1 8 N P T plugged tap accessible for a test gauge connection must be installed in the main gas supply line immediately upstream of each dryer IMPORTANT Pipe joint compounds that resist the action of natural gas and L P gas must be used IMPORTANT Test ALL connections for leaks by brushing on a soapy water solution liquid detergent works well ALL components and materials must conform to National Gas Code or Canadian Gas specifications 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 BTU s being supplied IMPORTANT The dryer and its individual shut off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1 2 psig 3 5 kPa NOTE The dryer must be isolated from the gas supply piping system by closing its individual manual shut off valve during any pressure test ofthe gas supply system at test pressures equal to or less than 1 2 psig 3 5 kPa 26 H PREPARATION FOR OPERATION and START UP The following items should be checked before attempting to opera
25. ation WARNING KEEP DRYER AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS GASOLINE and OTHER FLAMMABLE VAPORS and LIQUIDS NOTE Suggested time intervals shown are for average usage which is considered six 6 to eight 8 operational running hours per day SUGGESTED CLEANING SCHEDULE EVERY THIRD or FOURTH LOAD Clean the lint screen every third or fourth load A clogged lint screen will cause poor dryer performance The lint screen is located behind the lint door in the base of the dryer Open the lint door brush the lint off the lint screen and remove the lint Inspect lint screen and replace if torn NOTE The frequency of cleaning the lint screen can best be determined from experience at each location WEEKLY Clean lint accumulation from lint chamber thermostat and microprocessor temperature sensor sensor bracket area WARNING TO AVOID THE HAZARD OF ELECTRICAL SHOCK DISCONTINUE ELECTRICAL SUPPLY TO THE DRYER 90 DAYS Inspect and remove lint accumulation in customer furnished exhaust duct work system from dryer s internal exhaust ducting WARNING THE ACCUMULATION OF LINT IN THE EXHAUST DUCT WORK CAN CREATE A POTENTIAL FIRE HAZARD WARNING DO NOT OBSTRUCT THE FLOW OF COMBUSTION and VENTILATION AIR WARNING INSPECT and REMOVE ANY LINTACCUMULATION WHICH CAN CAUSE THE BACK DRAFT DAMPER TO BIND OR STICK A back draft damper that is sticking partially closed can result in slow drying and shutdown of heat cir
26. controller computer will proceed through the anti wrinkle program until the maximum Active Guard Time has expired or until the door is opened whichever comes first The L E D light emitting diode display will read FILL or Amount to Start If the anti wrinkle program is not active or in use the L E D light emitting diode display will read FILL or Amount to Start 2 Timed Mode Microprocessor Computer Models a When turning on power or when no cycle is in progress the L E D light emitting diode display will read FILL or Amount to Start b Insert Coins Once the correct Amount to Start has been inserted the L E D light emitting diode display will read PUSH c Select temperature by pushing HI TEMP LO TEMP or PERM PRESS The dryer will start and the L E D light emitting diode display will read the temperature cycle selected and the drying time d The dryer will continue through the drying and cooling cycles showing time counting downward IMPORTANT Ifthe door is opened during a cycle both the heat and motor will stop However the microprocessor controller computer will continue to count down in time Continuation of the cycle will resume only after the door has been closed and any other of the three 3 temperature selection buttons is again depressed e Upon completion of drying and cooling cycles the tone buzzer will sound for five 5 seconds and the L E D light
27. ct power to dryer wait one 1 minute and reestablish power to dryer If problem is still evident a Failed microprocessor controller computer b Failed keyboard label touch pad assembly N Dryer stops during a cycle and L E D light emitting diode display returns to FILL 1 Fault in microprocessor heat sensor circuit a Loose connection in wires between temperature sensor and microprocessor controller computer 2 Loose connection somewhere in main power circuit to microprocessor controller computer O Gas heating unit is not operating no heat no spark at burner area when dryer is first started and heat indicator is on 1 Fault in sail switch circuit a Sail switch is out if adjustment or had failed b Sail switch damper is not closing or is fluttering 1 Lint screen is dirty 2 Restriction in exhaust 2 Fault in burner hi limit circuit or thermostat 3 Fault in lint chamber sensor bracket hi heat protector thermostat 4 Failed Direct Spark Ignition DSI module 5 Failed DSI Direct Spark Ignition ignitor and flame probe assembly 6 Failed microprocessor controller computer P No heat ignitor sparks burner goes on and off right away 1 DSI Direct Spark Ignition ignitor or flame probe out of adjustment reposition closer to the flame area 2 Sail switch is fluttering a Lint screen dirty b Restriction in exhaust duct work Insufficient makeup air Failed ignitor and flame probe assembly Failed Direct Sp
28. cuit safety switches or thermostats Whencleaning the dryer cabinets avoid using harsh abrasives A product intended for the cleaning of appliances is recommended B ADJUSTMENTS 7 DAYS AFTER INSTALLATION and EVERY 6 MONTHS THEREAFTER Inspect bolts nuts screws bearing set screws nonpermanent gas connections unions shut off valves orifices and grounding connections Motor and drive belts should be examined Cracked or seriously frayed belts should be replaced Tighten loose V belts when necessary Complete operational check of controls and valves Complete operational check of ALL safety devices door switches lint drawer switch sail switch burner and hi limit thermostats C LUBRICATION The motor bearings idler bearings and under normal or most conditions the tumbler bearings are permanently lubricated It is physically possible to re lubricate the tumbler bearings if you choose to do so even though this practice is not necessary Use Shell Alvania Z2 or its equivalent The tumbler bearings used in the dryer do not have a grease fitting Provisions are made in the bearing housing for the addition of a grease fitting which can be obtained elsewhere 36 SECTION VII TROUBLESHOOTING 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 Occupa
29. duct work from the dryer to the outside outlet cannot exceed 60 feet refer to B below This calculation compensates for the use of a maximum of three 3 elbows including the two 2 elbows creating the 180 turned downward outside outlet Illus B ERTICAL DRY ENTING va 3 N ae ipa 2x D If the length of the duct run or quantity of elbows used exceeds the above noted specifications the cross section area of the duct work must be increased in proportion to the number of elbows or duct run added IMPORTANT For extended duct work runs the cross section area of the duct can only be increased to an extent For extended duct work runs a professional HVAC firm should be consulted for proper venting information 14 MULTIPLE DRYER Common VENTING If it is not feasible to provide separate exhaust ducts for each dryer ducts for individual dryers may be channeled into acommon main duct Each dryer is provided with a back draft damper The individual ducts should enter the bottom or side of the main duct at an angle not more than 45 in the direction of the airflow The main common duct may be any shape so long as the minimum cross sectional area is provided The main duct should be tapered with the diameter increasing before each individual 8 inch duct is added refer to Illus C for horizontal venting and Illus D for vertical venting NOTE Distance between dryer si
30. each corner of the base Two 2 are located at the rear of the dryer base and two 2 are located in the lint chamber coop To increase bearing life and improve efficiency the dryer should be tilted slightly to the rear B LOCATION REQUIREMENTS Before installing the dryer be sure the location conforms to local codes and ordinances In the absence of such codes or ordinances the location must conform with the National Fuel Gas Code ANSI Z223 1 LATEST EDITION or in Canada the installation must conform to applicable Canadian Standards 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 or Canadian Electrical Codes Parts 1 amp 2 CSA C22 1 1990 or LATEST EDITION for Electrical Connections l The dryer must be installed on a sound level floor capable of supporting its weight It is recommended that carpeting be removed from the floor area that the dryer is to rest on The dryer must not be installed or stored in an area where it will be exposed to water and or weather The dryer is for use in noncombustible locations Provisions for adequate air supply must be provided as noted in this manual refer to Fresh Air Supply in Section D Clearance provisions must be made from combustible construction as noted in this manual refer to Dryer Enclosure Requirements in Section C Provisions must be made for adequate clearances for servicing and for op
31. emitting diode display will read donE at which time the dryer will shut off NOTES 1 Ifthe anti wrinkle program is active the L E D light emitting diode display will continue to read donE and the microprocessor controller computer will proceed through the anti wrinkle program until the maximum Active Guard Time has expired or until the door is opened whichever comes first The L E D light emitting diode display will read FILL or Amount to Start Ifthe anti wrinkle program is not active or in use the L E D light emitting diode display will read FILL or Amount to Start 3 Free Dry Mode Microprocessor Computer Models a When turning on power or when no cycle is in progress the L E D light emitting diode display will read FILL or FrEE 30 b Select Temperature The dryer will start the L E D light emitting diode display will read the temperature cycle selected and the drying time portion of the L E D light emitting diode display will read 00 and count upward as time elapses or the vended time will count downward depending on the program parameter setting IMPORTANT Ifthe door is opened during a cycle both the heat and motor will stop However the microprocessor controller computer will continue to count the time either upward or downward depending on which parameter is programmed Continuation of the cycle will resume only after the door has been closed and any other of the
32. er 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 DATE OF PURCHASE MODEL NO MDG 50 DISTRIBUTORS NAME Serial Number s For replacement parts contact the distributor from which the dryer was purchased or contact Maytag Co 403 West Fourth St North Newton Iowa 50208 515 787 7000 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 in a 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 STAN DARDS Attention Lor des op rations d entretien Caution Label all wires prior to des commandes tiqueter tous fils avant disconnection when servicing controls Wiring f de les d connecter Toute erreur de errors can cause improper operation c blage peut tre une source de danger et de panne CAUTION DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN OPERATION WARNING CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR THE DRYERS CHILDR
33. eration as noted in this manual refer to Dryer Enclosure Requirements in Section C Dryer must be exhausted to the outdoors refer to Exhaust Requirements in Section E Dryer must be located in an area where correct exhaust venting can be achieved as noted in the manual refer to Exhaust Requirements in Section E C DRYER ENCLOSURE REQUIREMENTS Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of twelve 12 inches above the dryer s outer top eighteen 18 inches for locations with sprinkler systems except along the front of the dryer which may be closed if desired NOTE Allowances must be made for opening the control door LAU EZ NS 12 MINIMUM 1 16 NIV lt E P NR X 12 minimum 24 suggested for ease of maintenance 1 maximum for electric dryers 18 minimum for locations with sprinkler systems NOTE Air considerations are important for proper and efficient operation Dryers may be positioned side wall to side wall However a 1 16 minimum allowance must be made for opening and closing of the control door and the lint door It is suggested that the dryer be positioned about two 2 feet away from the nearest obstruction for ease of installation maintenance and service to be measured from the back guard Refer to the illustration above for details 10 D FRESH AIR SUPPLY The MDG 50 air sup
34. es but is taking too long to dry load 1 Heating unit cycling on hi limit thermostat 2 Housekeeping 44 a Lint screen and lint compartment not being cleaned on a regular basis b Lint accumulation in location exhaust system Insufficient makeup air Failed hi limit thermostat Failed lint compartment automatic 225 F 107 C safety thermostat circuit Extractors not performing properly Low or inconsistent gas pressure Gas supply may have low heating value Sail switch is fluttering a Restriction in location exhaust system 10 Exceptional cold or humidity or low barometric pressure atmosphere 11 Blower impellor and fan motor rotation direction is incorrect Dryer is cycling on hi limit thermostat 1 2 Blower impellor and fan motor failure Blower impellor and fan motor rotation direction is incorrect Insufficient makeup air Restriction in location exhaust system a Undersized exhaust ducting Lint screen needs cleaning Failed hi limit thermostat 45 SECTION TECHNICAL INFORMATION A DATA LABEL Contact Maytag Company PEN NE 2 b a Fa ud FLN 6 FL Dr Sy A SN 8 Ly TEN 2 When contacting Maytag Company certain information is required to insure proper service or parts information from manufacturer This information is on the data label located on the inside of the control door When contact ing man
35. es nt elie 37 D al Liner Models o abe oe 43 SECTION TECHNICAL INFORMATION sn ententes des te 46 A Data Label 46 SECTION Ix REVERSING TIMER SPIN DWELL ADJUSTMENTS ss 48 SECTION X PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS ann nn ist tie tie sers 49 SECTION I IMPORTANT INFORMATION A RECEIVING and HANDLING The dryer is shipped in a protective stretch wrap cover with protective cardboard corners and top cover or optional box as a means of preventing damage in transit Upon delivery the dryer and packaging and wooden skid should be visually inspected for shipping damage If any damage whatsoever is noticed inspect further before delivering carrier leaves If there are dryers damaged in shipment 1 ALL dryers should be inspected upon receipt and before they are signed for 2 If there is suspected damage or actual damage the trucker s receipt should be so noted 3 If the dryer is damaged beyond repair it should be refused Those dryers which were not damaged in a damaged shipment should be accepted but the number received and the number refused must be noted on the receipt 4 If you determine that the dryer was damaged after the trucker has left your location you should call the delivering carrier s freight terminal immediately and file a claim The freight c
36. ircuit fuse is blown Open at location service main fuse or circuit breaker Failed push to start relay Failed door switch or circuit Failed heat timer Failed dual timer relay B Drive motor only not operating 1 2 3 Failed drive motor contactor Failed reversing timer for Reversing Models ONLY Failed drive motor 43 C Blower motor only not operating 1 Failed impellor fan and blower motor contactor relay 2 Failed blower impellor and fan motor D Both drive and blower motors not operating indicator light is on 1 Fault with L1 termination at reversing timer for Reversing Models ONLY 2 Failed drying timer E Reversing drive motor operates in one direction only stops and restarts in same direction for Reversing Models ONLY 1 Failed reversing contactor relay 2 Failed reversing timer F Heating unit not operating ALL temperature selections 1 Fault in sail switch circuit a Sail switch out of adjustment or failed b Sail switch not closing or fluttering 1 Check blower impellor and fan motor and rotation direction 2 Restriction in location exhaust system 2 Failed burner hi limit circuit 3 Failed lint compartment automatic 225 F 107 C safety thermostat circuit 4 Failed heat selector switch G Heat unit not operating for only one 1 temperature selection 1 Failed thermostat corresponding to selection made 2 Failed heat selector switch H Dryer operat
37. ire department 4 Installation and service must be performed by a qualified installer service agency or gas supplier 5 Dryers must be exhausted to the outdoors 6 Although the MDG 50 is a very versatile machine 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 cleaner EXPLOSION COULD RESULT 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 solvent 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 also may be a fire hazard 7 A program should be established for the inspection and cleaning of lint in the burner area exhaust duct work and area around the back of the dryer 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 duct work can create a potential fire hazard 8 For personal safety the dryer must be electrically grounded in accordance with local codes or the NATIONAL ELECTRIC CODE ANSI
38. is inaccurate 11 Failed burner or oven hi limit 12 Failed lint compartment hi limit 1 2 Condensation on main door glass Too long undersized or improperly installed duct work Back draft damper is sticking in partially closed position Dryer or scraping noise at basket tumbler area 1 2 Check for object caught in basket tumbler or wrapper area Basket tumbler is out of proper alignment a Check both vertical and lateral alignment b Check gap between front panel and basket tumbler front set screws may have come loose and basket tumbler walked forward or backwards Loose basket tumbler tie rod Failed basket tumbler support 42 Excessive noise or vibration Dryer not leveled properly Impellor fan and blower out of balance a Excessive lint build up on impellor fan and blower b Failed impellor fan and blower Loose basket tumbler tie rod Basket out of adjustment or adjustment bolts hardware are loose Failed basket tumbler support Loose motor mount Failed idler or tumbler bearings V belts either too tight or too loose U Main burners are burning with a yellow flame 1 2 Burner air shutters are out of adjustment Insufficient makeup air Dust or lint in burner Insufficient gas pressure DUAL TIMER MODELS A Dryer will not start both drive and blower motors not operating indicator light is off 1 2 Dryer control c
39. ling thermostat d Sail Switch NOTE The sail switch can be checked for proper operation by opening the lint door while heating circuit gas burner is active on The heating unit should shut off within a few seconds Ifnot make necessary adjustments to the sail switch 28 5 Make a complete operational check of ALL operating controls NOTE Ifcomputer program changes are required refer to the computer programming section of the manual supplied with the dryer 6 The dryer should be operated through one 1 complete cycle to assure that no further adjustments are necessary and that ALL components are functioning properly IMPORTANT The dryer basket tumbler is treated with a protective coating We suggest tumbling old clothes or material in the basket tumbler using a mild detergent to remove the protective coating 7 Check the electric service phase sequence 3 phase 3e models only While the dryer is operating check to see if the blower wheel impeller and fan is rotating in the proper direction Looking from the front the blower impellor and fan wheel should spin in the clockwise CW direction If it is the phasing is correct If the phasing is incorrect reverse two 2 of the three 3 leads at connections L1 L2 L3 of the power supply to the dryer IMPORTANT Ifthe blower wheel impellor and fan is rotating in the wrong direction this will not only drastically reduce drying efficiency but it can al
40. ng increased use of energy and can create a safety hazard The dryer must be connected to the type of heat or gas indicated on the dryer label affixed behind the top access or control door If this information does not agree with the type of gas available DO NOT operate the dryer Contact the distributor who sold the dryer or the manufacturer IMPORTANT Any burner changes or conversions must be made by a qualified professional The input ratings shown on the dryer data label are for elevations up to 2 000 feet unless elevation require ments of over 2 000 feet were specified at the time the dryer order was placed with the factory The adjustment or conversion of dryers in the field for elevations over 2 000 feet are made by changing each burner orifice If this conversion is necessary contact the distributor who sold the dryer or contact the manufacturer 23 2 Technical Gas Data a Gas Specifications Type Gas Natural Liquid Propane L P Manifold Pressure 3 5 inches W C 8 7 mb 10 5 inches W C 26 1 mb Inline Pressure 6 0 12 0 inches W C 14 92 29 9 mb 10 5 inches W C 26 1 mb Shaded areas are stated in metric equivalents Measured at outlet side of gas valve pressure tap when gas valve is on b Gas Connections Inlet Inlet connection supply size 1 2 inch N P T 1 2 inch N P T minimum Btu hr input per dryer 130 000 32 760
41. ngle ducts being connected to the main common duct must be a minimum of 34 1 4 dryer width Duct work should be laid out in such a manner where allowances are made at rear area of the dryer for removal of rear service panels or guards The illustrations on page 16 show the minimum cross section area for multiple dryer venting These figures must be increased in proportion if the main duct run from the last dryer to where it exhausts has numerous elbows or is unusually long IMPORTANT For extended duct work runs the cross section area of the duct can only be increased to an extent For extended duct work runs a professional HVAC firm should be consulted for proper venting information Refer to page 16 for multiple dryer horizontal venting and vertical venting examples and illustrations 15 HORIZONTAL VENTING MULTIPLE DRYER VENTING Illus WITH 8 DIAMETER EXHAUST CONNECTIONS AT COMMON DUCT 57 NO OF DRYERS MINIMUM CROSS ee SECTION AREA SQin 200 155 115 80 MINIMUM ROUND DUCT DIAMETER IN 16 14 12 10 SZN 20 MAXIMUM NOTE A b 2 D CLEARANCE Tf a WU HORIZONTAL a Ju INSPECTION L ROOF oe DOORS NE TO INDIVIDUAL DRYERS A J 7 MINIMUM DISTANCE TUMBLER EXHAUST MUST ENTER MAIN BETWEEN DUCTS 34 1 4 WALL EXHAU
42. ompany considers this concealed damage This type of freight claim is very difficult to get paid and becomes extremely difficult when more than a day or two passes after the freight was delivered It is your responsibility to file freight claims Dryers and parts damaged in transit cannot be claimed under warranty 5 Freight claims are the responsibility of the consignee and ALL claims must be filed at the receiving end Manufacturer assumes no responsibility for freight claims or damages 6 If you need assistance in handling the situation please contact the manufacturer traffic manager at 508 678 9000 B SAFETY PRECAUTIONS WARNING The dryer must never be operated with any of the back guards outer tops or service panels removed PERSONAL INJURY or FIRE COULD RESULT 1 DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance 2 Purchaser 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 WHAT TO DO IF YOU SMELL GAS a DO NOT try to light any appliance b DO NOT touch any electrical switch c DO NOT use any phone in your building d Clear the room building or area of ALL occupants e IMMEDIATELY call your gas supplier from a neighbor s phone Follow the gas supplier s instructions f If you cannot reach your gas supplier call the f
43. one by a qualified professional The dryer must be exhausted to the outdoors Duct work should be routed as short as possible to the outdoors with as few elbows as possible Avoid 90 turns use 30 or 45 turns instead The size of the duct work must be a minimum of 8 inches for horizontal runs and 10 inches for vertical runs The inside of the duct work should be as smooth as possible with no projections from sheet metal screws Ducts added should overlap the duct to which it is to be connected ALL ducts should be taped to prevent moisture and lint from escaping into the building Inspection or clean out doors should be installed throughout strategic points in the duct work for periodic inspection and cleaning Wherever the duct passes through combustible materials the opening must be 2 inches larger all the way around than the duct The duct must be centered within this opening The outside of the duct work must be protected from the weather A 90 elbow must be used for horizontal run and when vertically through a roof by using a 180 turn to point the opening downward The distance between the exhaust duct and the nearest obstruction 1 roof or ground must be twice the diameter of the duct DO NOT use screens or caps on the outside opening of the exhaust duct work Exhaust back pressure measured by a manometer at the dryer exhaust duct area must not exceed 0 3 inches of water column W C Exhaust duct work outlets sh
44. ould not be located in an area directly where makeup air openings are located WARNING DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER OR SCREEN IN PLACE EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED 17 ELECTRICAL INFORMATION 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 with local and state regulations or codes In the absence of such codes ALL electrical connections material and workmanship must conform to the applicable requirements of the National Electrical Code ANSI NFPA NO 70 LATEST EDITION or in Canada the installation must conform to applicable Canadian Standards 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 or Canadian Electrical Codes Parts 1 amp 2 CSA C22 1 1990 or LATEST EDITION for Electrical Connections IMPORTANT Failure to comply with these codes or ordinances or the requirements stipulated in this manual can result in personal injury or component failure NOTE Component failure due to improper installation will VOID THE WARRANTY IMPORTANT Each circuit must be connected to an independently protected branch circuit accordance with electric codes for making service connections NOTE The use of aluminum wire will VOID THE WARRANTY IMPO
45. ply makeup air must be given careful consideration to assure proper performance of each dryer An unrestricted source of air is necessary for each dryer As a general rule an unrestricted air entrance from the outdoors atmosphere of a minimum of 1 1 2 square feet is required for each dryer If registers or louvers are installed over the openings then the area must be increased It is not necessary to have a separate makeup air openings for each dryer Common makeup air openings are acceptable However they must be set up in such a manner that the makeup air is distributed equally to the dryers EXAMPLE For a bank of eight 8 dryers twelve 12 square feet two 2 unrestricted openings measuring 2 feet by 3 feet 6 square feet each is acceptable MAKE UP AIR OPENINGS Z 7 2 1 1 4 SP sally IMPORTANT Makeup air openings should not be located in an area directly near where exhaust vents exit the building Allowances must be made for remote or constricting passageways or where dryers are located at excessive altitudes or predominantly low pressure areas IMPORTANT Makeup air must be provided from a source free of dry cleaning solvent fumes Makeup air that is contaminated by dry cleaning solvent fumes will result in irreparable damage to motors and other dryer components NOTE Componen
46. regulations or codes In the absence of such codes ALL plumbing connections materials and workmanship must conform to the applicable requirements of the National Fuel Gas Code 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 Plumb ing IMPORTANT FAILURE TO COMPLY WITH CODES or ORDINANCES and or REQUIREMENTS IN THIS MANUAL CAN RESULT IN PERSONAL INJURY and IMPROPER OPERATION OF THE DRYER The dryer and its individual shut off valves must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1 2 psig 3 5 kPa The dryer must be isolated from the gas supply piping system by closing its individual manual shut off valve during any pressure test of the gas supply system at test pressures equal to or less than 1 2 psig 3 5 kPa WARNING FIRE or EXPLOSION COULD RESULT 1 Gas Supply The gas dryer installation must meet the American National Standard National Fuel Gas Code 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 or Canadian Electrical Codes Parts 1 amp 2 CSA C22 1 1990 as well as local codes and ordinances and must be done by a qualified professional NOTE Undersized gas piping will result in ignition problems slow dryi
47. ring enters the dryer 20 5 3 Phase 3e Wiring Connections Hookup The only electrical input connections to the dryer are the 3 phase 3e power leads L1 L2 L3 and some times Neutral and ground Single phase 19 power for the control circuit is done internally to the dryer No single phase 19 input connection is required on a 3 phase 39 dryer IMPORTANT ACIRCUIT SERVING EACH DRYER MUST BE PROVIDED 1 3 Phase 39 Wiring Connection Hookup For gas dryers manufactured for operation at 3 phase 39 the electrical connections are made at the power distribution block located in the service box at the rear upper left corner ofthe dryer The ground connection is made to the copper lug also provided in this box To gain access to the service box and contactor the service box cover must be removed Providing local codes permit power to a dryer can be made by the use of a flexible U L listed power cord or pigtail wire size must conform to rating of dryer or the dryer can be hard wired directly to the service breaker panel In ALL cases a strain relief must be installed where the wiring enters the dryer and service box area 21 MDG 50 Gas ELECTRICAL SERVICE SPECIFICATIONS PER DRYER IMPORTANT 208 VAC and 230 240 VAC ARE NOT THE SAME When ordering specify exact voltage NOTES A Fuse ratings are dual element time delay current limiting class RK or RK5 ONLY B Circuit breakers
48. so cause premature component failure J PREOPERATIONAL INSTRUCTIONS Coin MODELS 1 Automatic Mode Microprocessor Computer Models a When turning on power or when no cycle is in progress the L E D light emitting diode display will read FILL or Amount to Start b Insert coins Once correct Amount to Start has been inserted the L E D light emitting diode display will read PUSH c Select temperature by pushing HI TEMP LO TEMP or PERM PRESS The dryer will start the L E D light emitting diode display will read the temperature cycle selected and the drying time portion of the L E D light emitting diode display will read 00 and count upward as time elapses IMPORTANT Ifthe door is opened during a cycle both the heat and motor will stop However the microprocessor controller computer will continue to count downward in time Continuation of the cycle will resume only after the door has been closed and any other of the three 3 temperature selection buttons is again depressed d Once the preprogrammed dryness level and cool down period have been reached or the maximum automatic time has expired the tone buzzer will sound for five 5 seconds and the L E D light emitting diode display will read donE at which time the dryer will shut off 29 NOTES 1 Ifthe anti wrinkle program is active the L E D light emitting diode display will continue to read donE and the microprocessor
49. t failure due to dry cleaning solvent fumes will VOID THE WARRANTY 11 E EXHAUST REQUIREMENTS Exhaust duct work should be designed and installed by a qualified professional Improperly sized duct work will create excessive back pressure which results 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 protector thermostat Where possible it is suggested to provide a separate single exhaust duct for each dryer CAUTION DRYER MUST BE EXHAUSTED TO THE OUTDOORS The exhaust duct work should be laid out in such a way that the duct work travels as directly as possible to the outdoors with as few turns as possible The shape of the duct work is not critical so long as the minimum cross section area is provided Single or independent dryer venting is recommended It is suggested that the use of 90 turns be avoided use 30 or 45 angles instead The duct work should be smooth inside with no projections from sheet metal screws or other obstructions which will collect lint When adding ducts the ducts to be added should overlap the duct to which it is connected ALL duct work joints must be taped to prevent moisture and lint from escaping into the building Additionally inspection doors should be installed at strategic points in the exhaust duct work for periodic inspection and cleaning IMPORTANT When connecting duct work to the dryer exhaust duct
50. te the dryer 1 Read ALL CAUTION WARNING and DIRECTION labels attached to the dryer 2 Check incoming supply voltage to be sure that it is the same as indicated on the dryer data label affixed to the back side of the top front control and service door 3 Check to assure that the dryer is connected to the type of heat or gas indicated on the dryer data label 4 The sail switch damper assembly was installed and adjusted at the factory prior to shipping However each sail switch adjustment must be checked to assure that this important safety control is functioning 5 Check bolts nuts screws terminals and fittings for tightness 6 Be sure that ALL gas shut off valves are in the open position 7 Check ALL back guard panels and service box covers have been replaced 8 Make sure the lint coop support bracket has been removed 9 Check the lint door to assure that it is closed and secured in place 10 Rotate the basket tumbler and drum by hand to be sure it moves freely 11 Check bolts nuts screws terminals and fittings for security 12 Check tumbler bearing set screws to ensure that they are ALL tight 27 I PREOPERATIONAL TESTS ALL dryers are thoroughly tested and inspected before leaving the factory However a preoperational test should be performed before the dryer is publicly used It is possible that adjustments have changed in transit or due to marginal location installation conditions 1 Turn
51. tional Safety and Health Administration STANDARDS The information provided will help isolate the most 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 and not necessarily the suspected component itself Electrical parts should always be checked for failure before being returned to the factory The information provided should not be misconstrued as a handbook for use by an untrained person making repairs WARNING ALL SERVICE and TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED PROFESSIONAL OR SERVICE AGENCY WARNING WHILE MAKING REPAIRS OBSERVE ALL SAFETY PRECAUTIONS DISPLAYED ON THE DRYER or SPECIFIED IN THIS MANUAL MICROPROCESSOR COMPUTER MODELS A No L E D light emitting diode display 1 Service panel fuse blown or tripped breaker 2 Blown control circuit L1 or L2 1 2 amp Slo Blo fuse 3 Failed microprocessor controller computer 4 Failed step down transformer for models 380 volts or higher ONLY B Drive motor not operating does not start 1 Failed drive motor contactor relay 2 Failed arc suppressor A S board for Reversing Models ONLY 3 Failed drive motor 37 4 Failed microprocessor controller computer C Drive motor reversing operates in one direction only stops and restarts in same direction 1 Failed drive
52. tional shipping box from dryer IMPORTANT Dryer must be transported and handled in an upright position at all times NOTE For OPL dryer models equipped with locks the lock used is a dummy lock and no key is supplied or needed The lock can be turned with any key a screwdriver a small coin or any small sharp object For coin operated dryers a key is provided and master key for both the Control Door and Lint Door should be made accessible because it will be needed throughout various phases in the installation ofthe dryer The dryer can be moved to its final location while still attached to the skid or with the skid removed To un skid the dryer locate and remove the four 4 bolts securing the base of the dryer to the wooden skid Two 2 are at the rear base remove the back panel for access and two 2 are located in the bottom of the lint chamber To remove the two 2 bolts located in the lint chamber area remove the lint door With the skid removed to make it easier to slide the dryer into its final position slightly lower ALL four 4 leveling legs so that the dryer will slide on the legs instead of the base frame To increase bearing life and improve efficiency the dryer should be tilted slightly to the rear The lint coops of ALL MDG 50 model dryers are supported during shipping by a bracket REMOVE THIS BRACKET BEFORE STARTING THE DRYER 1 Leveling Dryer The dryer is equipped with four 4 leveling legs one at
53. ufacturer please have the model and serial numbers available 46 THE DATA LABEL 1 MODEL DRYER The model number is an Maytag Company number which describes the size of the dryer and the type of heat 2 SERIAL NUMBER The serial number allows the manufacturer to gather information on your particular dryer 3 MANUFACTURING CODE NUMBER The manufacturing code number is a number issued by the manufacturer which de scribes ALL possible options on your particular model 4 TYPE OF HEAT The type of heat describes the type heat for your particular dryer gas either natural gas or liquid propane L P 5 HEAT INPUT This describes the heat input in British Thermal Units per Hour BTUH 6 ORIFICE SIZE Gives the number drill size used 7 ELECTRIC SERVICE This describes the electric service for your particular model 8 GAS MANIFOLD PRESSURE This describes the manifold pressure taken at the gas valve tap 9 APPLICABLE APPROVAL SEALS LE American Gas Association or Canadian Gas Association 47 SECTION IX REVERSING TIMER SPIN DWELL ADJUSTMENTS Dual timer models with reversing option have an electric reversing timer in the electric service box which is located in the upper rear area of the dryer Both the dwell stop time and basket tumbler spin time are adjustable by mode selection switches located on the electronic timer as noted in the illustration below TIMING LEGEND

American Dryer Corp. MDG-50 User's Manual

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