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continued from page 43

3. Failed drive motor.

4. Failed microprocessor controller (computer).

C. Drive motor (reversing) operates in one direction only...stops and restarts in same direction...

1. Failed drive motor contactor (relay).

2. Failed arc suppressor (A.S.) board.

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. 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 blower (impellor/fan) motor contactor (relay).

2. Failed arc suppressor (A.S.) board.

3. Failed blower (impellor/fan) motor.

4. Failed microprocessor controller (computer).

F. 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 blower (impellor/fan) drive shaft bearings.

NOTE

: V-belts too tight or bearings not lubricated often enough.

Содержание MD-170

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 24: ...20...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

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