Maytag MD-170 Installation & Operator'S Manual Download Page 6

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SECTION VII

TROUBLESHOOTING ........................................................................................... 43

SECTION VIII

REVERSING TIMER SPIN / DWELL ADJUSTMENTS .................................. 60

SECTION IX

DATA LABEL LOCATION/INFORMATION ...................................................... 61

SECTION X

PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT

COMONENTS .......................................................................................................... 63

SECTION XI

BURNER AND LINT (TUMBLER) CHAMBER MANUAL RESET

HI-LIMIT INSTRUCTIONS.............................................................................. 66

Summary of Contents for MD-170

Page 1: ...our gas supplier call the firedepartment Installation and service must be performed by a qualifiedinstaller serviceagencyorthegas supplier AVERTISSEMENT Assurez vousde bien suivre les instructions don...

Page 2: ...included with the dryer The following FOR YOUR SAFETY caution must be posted near the dryer in a prominent location FOR YOUR SAFETY Do not store or use gasoline or otherflammablevaporsorliquids inthe...

Page 3: ...FNEARDRYERSINOPERATION DRYERSSHOULDNEVERBELEFTUNATTENDEDWHILEINOPERATION CAUTION FORYOUR SAFETY DONOTDRYMOPHEADSINTHEDRYER DONOTUSEDRYERINTHEPRESENCEOFDRYCLEANINGFUMES WARNING UNDER NO CIRCUMSTANCES s...

Page 4: ...d 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 wi...

Page 5: ...NG UP 11 C DRYER ENCLOSURE REQUIREMENTS 13 D FRESHAIR SUPPLY 14 E EXHAUST REQUIREMENTS 15 F ELECTRICALINFORMATION 21 G GAS INFORMATION 25 H STEAM INFORMATION 29 I PREPARATION FOR OPERATION START UP 33...

Page 6: ...II REVERSING TIMER SPIN DWELL ADJUSTMENTS 60 SECTION IX DATA LABEL LOCATION INFORMATION 61 SECTION X PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMONENTS 63 SECTION XI BURNER AND LINT TUMBLER CHAMB...

Page 7: ...e 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 fr...

Page 8: ...gas supplier from a neighbor s phone Follow the gas supplier s instructions f If you cannot reach your gas supplier call the fire department 4 Installation and service must be performed by a qualified...

Page 9: ...r 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 dryi...

Page 10: ...40 Container 3 7 Dryers Per 45 48 Truck 8 8 Voltage Available 208 600v 3 3 4w 50 60 Hz Heat Input 550 000 btu hr 138 600 kcal hr Approx Weight Uncrated 1 900 lbs 861 3 kg Approx Weight Crated 2 065 l...

Page 11: ...Operating height of steam dryer is 101 inches 256 54 centimeters NOTE Themanufacturerreservestherighttomakechangesinspecificationsatanytime without noticeorobligation Specifications MDG 170 Gas MDS 17...

Page 12: ...n 1 Microprocessor Control Keyboard Touchpad Panel Assembly Controls 2 Control top access Door Assembly 3 Main DoorAssembly 4 Lint DoorAssembly 5 Lint Drawer 6 Wire Diagram located Behind Control Door...

Page 13: ...Bearing MountAssembly 4 Tumbler Bearing MountAssembly 5 Electric Service Relay Box 6 Heating Unit 7 Data Label and Installation Label 8 1 8 CompressedAir Supply Inlet Behind Gusset 9 Side Access Openi...

Page 14: ...r must not be installed or stored in an area where it will be exposed to water and or weather 3 Provisions for adequate air supply must be provided as noted in this manual refer to Fresh Air Supply in...

Page 15: ...the lint drawer and the four 4 Phillips head screws securing lint door in place 1 Leveling Dryer a To level dryer place 4 inch 10 16 cm square metal shims or other suitable material under the base pad...

Page 16: ...Upper Left Hand Corner of Dryer 4 Exhaust Duct Work NOTE ATransitionPiecefortheexhaustisshipped insidethetumbler basket ThisTransitionPiece is for locations with round exhaust duct work a To install...

Page 17: ...eads and partitions should be made from noncombustible materials The clearance between the bulkhead header and the dryer must be a minimum of 4 inches and must not extend more than 4 inches to the rea...

Page 18: ...t be supplied to each gas dryer and 4 400 cfm for each steam dryer As a general rule an unrestricted air entrance from the outdoors atmosphere of a minimum of four 4 square feet is required for each g...

Page 19: ...d twenty 20 feet The shape of the duct work is not critical so long as the minimum cross section area is provided It is suggested that the use of 90 turns in ducting be avoided use 30 and or 45 angles...

Page 20: ...its the building If the exhaust 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...

Page 21: ...measured by a manometer at each tumbler basket exhaust duct area should not exceed 0 3 inches of water column It is suggested that the duct work from each dryer not exceed twenty 20 feet with no more...

Page 22: ...ithinthisopening a Outside Duct Work Protection 1 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...

Page 23: ...sthemaximumlimitsasnotedinthismanual a professionalHVACfirm shouldbeconsultedforproperventinginformation IMPORTANT Exhaust back pressure measured by a manometer at each dryer exhaust duct area should...

Page 24: ...20...

Page 25: ...cal Code ANSI NFPA NO 70 LATEST EDITION IMPORTANT Failure to comply with these codes or ordinances and or the requirements stipulated inthismanualcanresultinpersonalinjuryorcomponentfailure NOTE Compo...

Page 26: ...pecificationsatanytime without noticeorobligation MDG 170 Gas MDS 170 Steam ELECTRICAL SERVICE SPECIFICATIONS PER DRYER IMPORTANT 208 VAC AND 230 240 VAC ARE NOT THE SAME When ordering specify exact v...

Page 27: ...ce cover must be removed The LINE POWER and the GROUND connections to the dryer must be made through the knock out hole at the top of the electric service relay box A strain relief must be used where...

Page 28: ...is suggested that a separate ground wire sized per local codes be connected from the ground connection of the dryer to a grounded cold water pipe DO NOT ground to a gas or hot water pipe The grounded...

Page 29: ...reparable damage to the gas valve which will VOIDTHEWARRANTY WARNING FIRE or EXPLOSION COULD RESULT 1 Gas Supply The gas dryer installation must meet the American National Standard National Fuel Gas C...

Page 30: ...nches water column 26 1 millibars There is no regulator or regulation 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...

Page 31: ...tem Consistent gas pressure is essential at ALL gas connections It is recommended that a 1 inch 2 54 cm pipe gas loop be installed in the supply line serving a bank of dryers An in line pressure regul...

Page 32: ...ing any pressure testing of that system at test pressures in excess of 1 2 psig 3 5 kPa NOTE The dryer mustbeisolatedfromthegassupplypipingsystembyclosingitsindividualmanual shut off valve during any...

Page 33: ...limit the acid attack of the steam coils IMPORTANT CoilfailureduetoimproperPHlevelwillVOIDTHEWARRANTY 2 Steam Requirements High Pressure Inlet 1 1 2 3 81 cm supply line connection qty one 1 at top man...

Page 34: ...w the dryer to be isolated from the supply and return mains if the dryer needs maintenance work e Install an inverted bucket steam trap and check valve for each unit at least 12 inches below steam coi...

Page 35: ...tion The MDS 170 steam damper as shown in the top illustration on page 32 allows the coil to stay constantly charged eliminating repeated expansion and contraction When the damper is opened the air im...

Page 36: ...d and adjusted prior to shipping at 80 psi steam damper operation must be checked before the dryer is put into operation Refer to the illustration above for correct steam damper operation If damper ai...

Page 37: ...is important safety control is functioning 5 Check to be sure drive belts between idler pulley and motor pulley have been reconnected NOTE The drive belts were disconnected at factory prior to shipmen...

Page 38: ...th heat of 180 F 82 C for 30 minutes drying time and have a 4 minute cool down period 4 Dryer will now start and the L E D display will read Dr30 dry mode for 30 minutes and count down in minutes NOTE...

Page 39: ...s are open 2 The dryer is equipped with a Direct Spark Ignition DSI system which has internal diagnostics If ignition is not established the heat circuit in the DSI module will LOCK OUT until it is ma...

Page 40: ...hiscoating 8 Each dryer should be operated through one 1 complete cycle to assure that no further adjustments are necessary and that ALL components are functioning properly 9 Programs selections for m...

Page 41: ...gulation a No air regulation or filtration is provided with the dryer External regulation filtration of 80 PSI 552 kPa must be provided It is suggested that a regulator filter gauge arrangement be add...

Page 42: ...ng the Maytag Company Service Department be sure to give them the correct model number and serialnumber so that your inquiry is handled in an expeditious manner B PARTS 1 Replacement parts should be p...

Page 43: ...n door glass These warranty cards are intended to serve the customer where we record the individual installation date and warranty information to better serve you should you file a warranty claim IMPO...

Page 44: ...OMBUSTIBLE 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 hoursperday Clea...

Page 45: ...move lint accumulation in customer furnished exhaust duct work system and from dryers internal exhaust ducting WARNING THEACCUMULATION OFLINT INTHE EXHAUSTDUCTWORK CAN CREATEAPOTENTIALFIRE HAZARD WARN...

Page 46: ...this practice is not necessary Use ShellAlvania 3 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...

Page 47: ...factory Theinformationprovidedshouldnotbemisconstrued as a handbook for use by an untrained person making repairs IMPORTANT When replacing blown fuses the replacementmust be of the exact rating as the...

Page 48: ...voltage to the motor c Failed motor d Tumbler basket is binding check for obstruction e Failed idler bearings or tumbler bearings E Blower impellor fan motor is not operating does not start 1 Failed...

Page 49: ...s and then stop microprocessor controller computer display continues to read time or percent of extraction and ALLindicator dots are off 1 Fault in main door switch circuit a Main door switch out of a...

Page 50: ...elected the L E D display continues to read FILL 1 Failed keyboard touchpad label assembly 2 Failed microprocessor controller computer N Microprocessor controller computer will only accept certain key...

Page 51: ...is set incorrectly in the active mode SEn where the dryer is not equipped with the optional rotational sensor program should be set as nSEn S Microprocessor controller computer L E D light emitting di...

Page 52: ...icro processor controller computer heat indicator dot is on but the HEAT relay output L E D is not on 1 Failed microprocessor controller computer V No heat voltage is confirmed at heating unit i e Gas...

Page 53: ...per pneumatic air solenoid 4 Damper stuck in closed position a Check for obstruction 5 Leak in the pneumatic air system 6 Failed air piston W Dryer operates but is taking too long to dry 1 Exhaust duc...

Page 54: ...me pattern 1 Not enough make up air 2 Restriction in exhaust 3 Gas pressure too high 4 Impellor blower fan squirrel cage rotating in the wrong direction 5 Burner orifice size D M S too large for appli...

Page 55: ...int accumulation on the sensor bracket can act as an insulator which will affect the accuracy of theAutomaticDryingCycle X Main burners are burning with a yellow flame for Gas Models ONLY 1 Poor air g...

Page 56: ...ldup impellor fan blower squirrel cage NOTE Check to insure that the air jet is functioning b Failed impellor fan blower squirrel cage 3 Loose tumbler basket tie rod 4 Failed tumbler basket support 5...

Page 57: ...ng timer D Drive motor operates okay for a few minutes and then stops and will not restart 1 Motor is overheating and tripping out on overload protector a Motor air vents clogged with lint b Low volta...

Page 58: ...el damper system pneumatic solenoid GAS MODELS 1 Fault in sail switch circuit a Sail switch is out of adjustment or has failed b Sail switch damper is not closing or is fluttering 1 Lint drawer screen...

Page 59: ...rk Ignition DSI module LOCKS OUT red L E D indicator light stay on 1 Ignitor probe assembly is out of adjustment or has failed 2 Severe air turbulence 3 Failed Direct Spark Ignition DSI module 4 Faile...

Page 60: ...Restriction in exhaust a Customer furnished exhaust back draft damper is sticking partially closed b Restriction in duct work 1 Check duct work from dryer all the way to the outdoors 3 Insufficient ma...

Page 61: ...wer screen is dirty or is not being cleaned often enough d Failed burner hi limit switch opens at incorrect temperature e Gas supply may have low heating value 8 Steam Models a Low steam supply 1 Stea...

Page 62: ...on in exhaust c Gas pressure too high d Impellor blower fan squirrel cage rotating in the wrong direction e Burner orifice size D M S too large for application i e high elevation L Condensation on mai...

Page 63: ...sfunctioning b Failed impellor fan blower squirrel cage 3 Loose tumbler basket tie rod 4 Failed tumbler basket tie rod 5 Looses motor mount 6 Failed idler tumbler basket or fan impellor bearings 7 V b...

Page 64: ...a 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 Spin Tim...

Page 65: ...certaininformationisrequiredtoinsureproperservice partsinformation fromMaytag Thisinformationisonthedatalabelthatislocatedintheleftinsidefrontpanel asshowninthe illustration above When contacting the...

Page 66: ...is a number issued by the manufacturer s which describes ALLpossible optionsonyourparticularmodel 4 TYPEOFHEAT The type of heat describes the type of heat for your particular dryer gas either natural...

Page 67: ...ocessor computer board reestablish power to the dryer b Start the drying cycle c Verify that the motor s and the heat indicator dots in the microprocessor computer L E D display are on Refer to the il...

Page 68: ...ht will then turn green The gas valve will be energized and the ignitor probe will spark for approximately 8 seconds The burner flame should now be established e With the burner flame on remove the fl...

Page 69: ...t The DSI module will LOCKOUT if the gas burner flame is not sensed at the end of the trial for ignition period The trial for ignition period will be repeated for a total of three 3 retries trials the...

Page 70: ...will start or continue through the drying cycle with no heat Manual reset hi limit thermostatmustberesetmanually This hi temperature condition may be caused due to a restricted exhaust poor airflow o...

Page 71: ...e hi limitthermostatandwillstartorcontinuethroughthedryingcyclewithnoheat Manual resethi limit mustberesetmanually This hi temperature condition may be caused due to a restricted exhaust poor airflow...

Page 72: ...PartNo 113024 1 02 16 00 25 2 02 25 00 250...

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