给排水及卫生系统（英文版）讲解

SouthwestJiaotongUniversityYawanhighspeedrailwayoperationandmaintenancepersonneltrainingMarch2022二、professionalknowledgeEMUbodystructure,vehicleendconnectionandequipmentinthevehicle（3.Watersupplyandsanitationsystem）Instructor：LiuLihua一二GenerallayoutWatersupplyanddrainagesystem三Healthsystem四Dailyoperationinspection五Typicalfaulthandling一Generallayout

Introductiontothesanitarywatersupplysystem

Watersupplyanddrainagesystem:ThewatersupplyanddrainagesystemontheEMUisasystemthatprovidestherequiredwaterforpassengerstowash,drinkandrelatedpartsofthecarriageonthetrain,andtreatsthesewagegeneratedbywashing,etc.Healthsystem:Standardsanitationfacilitiesandsanitationfacilitiesforpersonswithdisabilities.Ya-Wanhigh-speedrailwayemUsanitaryfeedwatertruckequipmentlayout

19-watertankWatersupplyanddrainagesystem:Watertank(undervehicleandonvehicle),watersupplypipeanddrainpipe

GeneralIntroductiontoYa-Wanhigh-speedrailway(8-carmarshalling)Sanitationsystem:1seattoilet+1singletoiletforNo.1andNo.8vehicles;2.Vehicles3,4,6and7areequippedwith2seattoilets+1singletoilet,andvehicles4areequippedwithdisabledtoilets

Seattoilet

bathroom

SquattoiletToiletforthedisabled

Ya-Wanhigh-speedrailwaysanitarywatersupplysystemsanitarywatersupplysystem:includingtoilet,dirtboxandsanitarycontrolunitToiletseatThereisonetoiletforvehicles1and8,twotoiletsforvehicles2,3,4and7,andnotoiletforvehicles5.

Ya-Wanhigh-speedrailwaysanitarywatersupplysystem21：DirtboxThereisadirtboxundereachcarriage,andthereisnodirtboxinNo.5car.二Watersupplyanddrainagesystem

WatersupplyanddrainagesystemEachcarisequippedwitha400Lunder-carwaterpurificationtank,usingawaterpumpwatersupplymethod,fortoilets,toiletsandwashroomwatersavingvalves,sanitarywarepoolvalves,kitchensinks,electricboilersandotherwaterfacilitiestosupplywater;Thewatersupplysystemprovidesdomesticwaterfromthetanktoeachwaterfacilitybypumpingwater.Thewatertankdeviceislocatedunderthecar,connectedwiththebottombeamofthecarthroughthemount,thewaterpumpislocatedinthepumproomofthewatertankdevice,andthecontrolpartofthepumpisinstalledinthewarmwatersewagedistributionplateonthecar.Whenthecaruseswater,thepressureinthewatersupplypipelinedrops,thepumpdetectsthepressuredropandtheflowratechanges,automaticallyturnsonthepowersupply,andsupplieswaterfromthecartothecar;afterthewaterisused,thepumpdetectsthatthepressureinthewatersupplypipelinereachesthesetvalueandtheflowrateislessthanthesetvalue,andthepumpautomaticallyshutsdown.

WatersupplyanddrainagesystemcompositionWatersupplyanddrainagesystemcomposition:underthecarwatertank,waterpumpdevice,waterinjectiondevice,overflowdevice,watersupplypipeline,drainagedevice,antifreezedevice,liquidleveldisplaydevice,electricalboxandothercomponents.Theelectricalpartmainlyincludesthewatertankelectricalbox(includingPLCcontroller,contactor,relay,etc.),pushbuttonswitch,etc.Watersupplyanddrainagesystemandsanitarysystempowersupplycontrol.

SchematicdiagramofawatersanitationsystemwatertankThewatertankadoptslightweightandintegrateddesign.Thewatertankdeviceintegratestheinnerbox,pumproomcomposition,waterinjectionpipeline,overflowpipeline,waterinspectionpipeline,drainagepipeline,insulationlayer,outerboxandothercomponents,andisconnectedandfixedwiththevehiclebodybeam.lInnerbox(hanger)InspectiondoorCompositionofwatersupplypipeCompositionofoverflowpipeOuterplatecompositionDrainvalveWaterpumpsystemCompositionofwaterinjectionpipe

PumpsandcontrolsystemsPumpandcontrolsystem:Partofthepumpandcontrolsystemisinstalledinthepumproomofthewatertank,andtheotherpartisinstalledinthedistributiontrayofwarmwaterdirtonthecar.Theinternalpartsofthepumproommainlyincludewaterpumps(withwatersupplypressureswitches,watersupplyflowswitches),suctionpressureswitches,watersupplysolenoidvalves,drainagesolenoidvalves,pipelinecompositionandwaterlevelelectrodes,etc.;theinternalpartsofthewarmwatersewagedistributionpanelmainlyincludewatersupplycontrollers,watermeter,waterpumpcontactlessswitches,pumptimersandresetswitches.SolenoidvalveforwatersupplyWatersupplyvalveInletcornervalveWaterlevelelectrodewaterpumpWatersupplypressureswitchDrainagesolenoidvalveDrainvalveWatersupplyoutletWatersupplyflowswitchBuffertank

Pumpstart-stopprincipleThewatertankhaswater,thesystemispoweredonforthefirsttimeafterthewaterinletsolenoidvalveisopened,thedrainagesolenoidvalveiselectricallyclosed,andthepumpstartsafter15s.Whenthewatersupplylinepressurerisestotheupperlimitvalue(127kPa)setbytheheadpressureswitch,thePLCcontrolsthestandbystateatthestopofthepump.Withwateronthevehicle,thePLCcontrolsthepumptostartwhenthewatersupplylinepressuredropstothelowerlimit(98kPa)setbytheheadpressureswitch.Thewaterisstoppedonthevehicle,andwhenthepressureofthewatersupplylinerisestotheupperlimitsetbytheheadpressureswitch(127kPa),thePLCcontrolsthepumptostop.ThepumpisopenedemptyClosedcontrolemptyDeterminewhetherthewatertankis0%waterless15scontinuousjudgmentThepumpisdelayedfor15secondstostartPumpdoesnotstart(waterisrequired)Systemfailure(tobefixed)ThepumpisonstandbyWateronthevehicleWhetherthewatersupplypipepressureislowerthan98KaThepumpstartsThepumprunscontinuouslyWhetherthewatersupplyflowisgreaterthan2.6L/minWhetherthepressureofthewatersupplypipereaches127KabebebenotnotbenotPumpcontrolprocessControlboxThepumpcontrolboxislocatedonthecar,andthePLCcontroller,contactor,relayandterminalblocksarearrangedinside.Theconnectionbetweentheelectroniccontrolboxandthetankfloatswitch,thewaterpumpunit,andtheelectricalcontrolunitofthesanitarysystemisconnectedbyapowerconnector.Liquidleveldisplay

Theliquidleveldisplayunderthevehicleisusedtodisplaythewaterstorageinthewatertankanddirttank.Fivelevelsofwatertankliquidleveldisplay:0%,25%,50%,75%and100%.Theliquidleveldisplayofthesewagetank:0,25%,50%,75%and100%.Inaddition,thesewagetank/wastewatertankalsohasaliquidleveldisplay,whichisalsodividedintofivelevels.Watertanklevel

Watertankcontrol:PLCinputLeakdetectionwatertank25%watertank0%watertank100%watertank75%watertank50%FlowdetectionInspiratorydetectionHydrostatictestingAntifreezeevacuationWatersystemfaultresetCaseemptyingsignal

Watertankcontrol:PLCoutput25%waterlevel0%waterlevel50%waterlevel75%waterlevel100%waterlevelControlwaterpumpControlwaterinletsolenoidvalveControlboxemptyingsolenoidvalveControllineemptyingsolenoidvalveWatertankemptyingindicationLeakdetectionWatersystemfailureControlwaterpumpemptyingsolenoidvalve

DrainagelinesThemulti-purposefacewasherandwaterdispenserwastewaterisdirectlyremovedfrombothsidesoftheoutertrackthroughtherespectivedrainagelines。BecausetheEMUisrunningathighspeed,especiallywhenitmeetsthecarandentersandexitsthetunnel,itwillcausefluctuationsintheairpressureinthecarriage.Inordertoensurethecomfortoftheseat,thecarriagemustbeairtightdesign.Thedrainagelineadoptsawatersealingdevicetoensurenormaldrainageundertheinfluenceofairpressurefluctuations.Thewatersealingdeviceismainlycomposedofwaterinlet,waterinletpipe,siphonpipe,drainpipeanddrain.Thewatersealtakesadvantageofthelevelheightoftheinletpipe(P2)andsiphon(P')toovercomethepressuredifferencebetweentheairinsideandoutsidethecar.WatersealcompositionDrainagepipecompositionWashingwastewatercollectionanddischargedevice

WarmwatertankThewarmwatertankisplacedunderthewashstandandconsistsofastainlesssteelwatertank,insulationmaterialandsteeljacket.Aheaterisinstalledinsidethewatertank,andapressurereducingvalveandreliefvalveareprovidedinside.Thecoldwaterfromthewatertankentersthewarmwatertankthroughthepressurereducingvalve,andtheheatedhotwaterentersthehotandcoldmixedsolenoidvalveofthemulti-functionfacewasherthroughthereliefvalveandtheconnectingpipe.Whentheworkingpowersupplyofthewarmwatertankisturnedon,theelectricheaterstartstowork,andwhenitisheatedtothesettemperature,itautomaticallystops.Thewarmwatertankhasanautomaticprotectionstructurethatpreventswaterboilingandabnormaltemperaturerise.Whenusingwater,undertheactionofthewatersupplypressureofthepump,theoutputhotwaterismixedwithcoldwaterandsenttotheautomaticwateroutletoftheautomaticfacewashermulti-functionfacewasher.thermoregulationReliefvalveHotwateroutletColdwateroutletOverflowportscupperElectricalwiringDrainvalveInlet

WarmwatertankTechnicalparameters:Ratedvoltage:AC100V;Ratedpower:1KW;Innertankcapacity:11.7L;Settemperature:40+5degrees;PressureReducingValve:0.078MPa;Safetyvalve:0.086-0.093MPa;Over-temperatureprotection:action80degrees+5degrees;recovery65degrees+5degrees.

ElectricboilingwaterstoveFunctionandcomposition:Providedrinkingboilingwater,mainlyincludingcabinets,electricalcontrolboxes,waterproductiontanks,waterstoragetanks,heatingchambers,waterlevelsensors,solenoidvalves.

Electricboilingwaterfurnacestructure1-Inletvalve;2-Filter;3-Solenoidvalve;4-Electricalboxoutletpipe;5-Waterlevelontheproductiontank;6-Waterleveldisplayandsensorcomponentsforproductiontank;7-Waterlevelintheproductiontank;8-Waterlevelundertheproductiontank;9-Heatingchamber;10-Productiontanksewagevalve;11-Waterstoragetanksewagevalve;12-Heater;13-Waterlevelunderthestoragetank;14-Waterlevelinthestoragetank;15-Waterlevelonthestoragetank;16-Electricalbox4;17-Terminalblocks.heaterSolenoidvalvesWaterlevelsensor(magnetron)lightElectricalboxandindicator

ElectricboilingwaterstoveTechnicalparameters:Workingpower:3-phase4-wireAC380V50HzControl:DC110VPower:4.5kWWaterProduction:40L/hWaterstoragechambervolume:18L.

ElectricboilingwaterstoveElectricalschematicFuseFusersfilterWaterlevelonthestoragetankRectifierbridgeOvercurrentsignalInductioncoilinverterStablepowersupplyPhasesignalPulsatingpulsesOverheatsignalSolenoidvalvesLightEight-bitunit-chipmicroprocessorRelayKAThewaterlevelinthestoragetankProductiontankUpperwaterlevelProductiontankMediumwaterlevelProductiontankWaterlevel

TheworkingprincipleofelectricboilingwaterfurnacePoweronStopheatingthewateringressThewaterlevelundertheproductiontankThewaterlevelontheproductiontankThewaterlevelintheproductiontankStopheatingthewateringressHeatingstopswateringressStopheatingStopingressingwaterInletwaterheatingThewaterlevelonthestoragetankThewaterlevelinthestoragetankThewaterlevelonthestoragetankThewaterlevelontheproductiontankThewaterlevelintheproductiontankThewaterlevelundertheproductiontankThewaterlevelunderthestoragetankWaterstoragetankfloatFloatbeforewaterproductionWaterleveldetectiontubeforstoragetankWaterleveldetectiontubeforproductiontankWaterlevelcontrolprocess

WatersupplysystemfunctionWatersupplyfunction:controlthepumpstartandstopbydetectingthepipelinepressure;Centralizedcontroldrainagefunction:watertank,electricwaterboiler,pipelinedrainage.Poweroutageandemptying:Afterthesystemispoweredoff,thewaterpumpstops,theinletsolenoidvalvelosespowerandcloses,thedrainagesolenoidvalvelosespowerandopens,thedrainagewatersupplypipelinestoreswater,andthesanitationsystemdoesnotmoveBicycleemptying:operatethebicycleantifreezeemptyingbutton,thedrainageactionofthewatersupplysystemisthesameasthepowerfailureandemptying.Afterthewatersupplysystemisemptiedfor15minutes,eachtoiletsystemindependentlyperformstheemptyingcontrol(thetransferboxisautomaticallyemptiedonce→thetoiletisautomaticallyflushed3times→thetransferboxisautomaticallyemptied3times),andthewaterisstoredinthedrainagetoilet,waterboosterunitandauxiliarypipelinesandtransferbox;Centralizedemptyingofthewholetrain:watersupplysanitationactionisthesameasbicycleemptying;Manualemptying:Waterinthewatertankandpumpchamberneedstobedrainedmanually.Thewaterinthedirtbinneedstobeevacuatedbythesewagesuctiontruck.

WatersupplysystemfunctionLowlevelalarmfunction:0,1/4levelalarm(vehicleswithsanitarysystem,canalsobealarmedontheelectricalcontrolunitofthesanitarysystem)Liquidleveldetectionanddisplayfunction:0,25%,50%,75%,100%fivegearliquidleveldetectionanddisplayontheinformationdisplaydeviceunderandonthevehicle

WatersupplysystemfunctionHeatingstatusanddisplayfunction:DetecttheheatingstatusanddisplayitonthecarLeakprotectionfeatures:Whentheflowofthewatersupplypipelineisgreaterthan1L/min,theleakdetectionswitchisturnedon(ON),after3minthePLCcontrolpumpstopswaitingfor3min(thatis,the6thmin)PLCcontrolsthepumptostartagain,ifthePLCdetectstheflowratefor3minagain(greaterthan1L/min)signal,thePLCcontrolpumpstopsanddoesnotstartagainafterthe9thmin,thetrainMONmonitoralarm(vehiclewithsanitarysystem,electricalcontrolunitalarm).Iftheleakdetectionswitchisdisconnected(OFF)beforethe3rdor9thminute,thesystemisbackinoperation.三HealthsystemsOverviewofhealthsystems

Withtheincreaseofpassengertrainspeed,theproblemofairpressuresealingofpassengercarsisveryprominent,anditalsorequirestheuseofclosedtoilets.Therefore,thehigh-speedEMUmustadoptawatersupplyanddrainagesystemwithgoodsealingperformance,asealedurinalflushing,dirtcollectionanddischargeequipment.Therearethreetypesofrealtoilets:vacuumholdingtype,truespaceintermittenttype,andpositivepressurepush-pulltype(transitboxtype).ThevacuumtoiletcollectorofYa-Wanhigh-speedrailwayisoftransitboxtype.Overviewofhealthsystems

Principleofvacuumstoolcollectionsystem:whenitisnecessarytorinse,thedirtboxisundernegativepressure,andthedirtissuckedintotheisolationcylinder.High-pressureairenterstheisolationcylinderthroughthepressurelimitingvalveandpressesthedirtintothedirtboxthroughtheconveyorvalve.Thevacuumexcrementcollectionsystemconsistsofatoilet,atransferbox,adirtbox,asuperchargerandanelectriccontrolbox.VacuumfecalsystembuttonToiletSuperchargerSolenoidvalvesEquipmentinstalledinthetoiletofthecarVacuumfecalsystemElectricallycontrolledboxPartsofthecar:Vacuumfecalsystem

DirtbinUnderthecar:aconjuratorToiletQuickdrainvalveSlidevalveToiletToiletlevelsensornozzleWaterboosterwithintegratedlevelsensorControlunitOutlettubeQuickcouplingsforwater,compressedairandelectricityLowerdrainvalveoftoilet

DrainvalveDrainvalveclosedpositionFlushingcycleDrainvalveclosedBedpananddirtboxPartiallyisolated

Dirtbin

Thedirtboxislocatedattheendofthetrainandhasanintegrateddesign.Itiscomposedofinnerbox,skeleton,insulationlayer,outerbox,hangingseat,transferbox,vacuumgenerator,liquidleveldisplaydevice,antifreezedevice,electricalboxandpipeline.ElectricalboxDirttanklevelsensorSewagehosevalveSewagepipesTransferboxBlowdownvalveDirtboxinsidetheboxTransferboxliquidsensorInfeasiblehosevalveMountingbracketTransferboxTransferboxBunkersystemdirtbinSingletoiletsystemdirtbin

FilterregulatorTwo-waysolenoidvalve(tovacuumgenerator)FilterregulatorwithpressuregaugeManualshut-offvalveRegulatorwithpressuregaugeInstantsounderVacuumtoiletbowlregulatorFilteradjusterisolationvalvepressurizedair真空集便系统原理图中转箱式真空集便系统的工作原理：VacuumfecalsystemprincipleToiletflushinglogic:Pressthetoiletflushbutton,thevacuumgeneratordevicebeginstowork,afterthevacuumdegreeinthetransferboxreachesthesetvalue,thewaterboosterunitprovidespressurewaterflushingtoilet,thetoiletbutterflyvalveopens,thedirtentersthetransferboxundernegativepressure,thebutterflyvalvecloses,thewaterpressureboosterunitprovidespressurewatertothetoiletforsecondaryflushing,andthewaterpressureunitreplenishesthetoiletfor1flushingcycleendsPressthetoiletflushbuttonThevacuumejectorbegantoworknotnotAfter4sthetransferboxreaches-50KavacuumbeRinsethetoiletEndofonerinsecyclebeAfter20consecutivehoursofcontinuousoperation,therequiredvacuumlevelcannotbereachedVacuumoutofalarmAppliancecontrolunitSupplyofcompressedairSupplyoffreshwater

VacuumfecalsystemprincipleTransferboxemptyinglogic:Whenthetoiletisused6timesorthedirtinthetransferboxreachesthesetlevel,positivepressureairisinjectedintothetransferboxandthedirtistransferredtothedirtboxunderpositivepressure.ThetransferboxemptysthecyclenotCheckthetoiletforupto6timesbebenotHosevalves1,2,3offHosevalve3opens,clearstheturretHosevalves1,2,3openThetransferboxisinjectedwith120KacompressedairWaitforthenextrinsecycleValve4Valve3Valve1Valve2Valve5Valve6Valve7SupplyofcompressedairAppliancecontrolunitElectricalcontrolsystemofstoolcollectionsystemDirtboxcontrolsystem

OperationandmonitoringThefunctionsofthehealthsystemarecontrolledbyalocalcontrolunitthatcommunicateswiththeTCMSTsystem.ThehealthsystemIDUinterfaceisshowninthefigure.

Convenientsystemfunctionality

Sewagetankleveldisplayandfullwaterprotection:DirttanklevelindicationandboxfullprotectionfunctionThedirtboxisequippedwithan80%,100%levelswitch,whichcanbeindicatedontheunder-carliquidleveldisplay,andcanbealarmedonthevehicle'selectricalcontrolunitandtrainMONmonitor.Inordertopreventfalsealarmsoftheliquidlevel,the15scontinuousjudgmentofthelevelsignalofthedirtbox(80%,100%)isaddedtothecontrollogicoftheelectricalcontrolunit;Whentheliquidlevelofthedirttankreaches80%,thetoiletmovesnormally;Whenthedirtisfull,thetoiletisdisabled.Afterthesewagetankisdischarged,thesystemreturnstonormal.

ConvenientsystemfunctionalityConvenientsystemfaultprotectionandalarmfunctionToiletbutterflyvalvefault:whenatoiletbutterflyvalvefaultandcannotbeautomaticallyeliminated,thecorrespondingtoiletisnotavailable,thevehicleelectricalcontrolunitdisplaysthecorrespondingcode,trainMONmonitoralarm;Thepressureofthetransferboxistoohigh:whenthepressureofacertaintransferboxistoohigh,thecorrespondingtoiletisnotavailable,theelectricalcontrolunitofthecardisplaysthecorrespondingcode,andthetrainMONmonitoralarms;Insufficientpressurefromoneairsource:Whenthepressureoftheairsupplyofthecarisinsufficient,allthetoiletsofthecararenotavailable,theelectricalcontrolunitofthecardisplaysthecorrespondingcode,andthetrainMONmonitoralarms.

HealthsystemfunctionWastewateranddirtcollectionfunctionToiletflushfunctionNetworkcommunicationfunctionFaultdetectiondisplayfunction:DisplayfaultcodeandtextviaDTC.四RoutinemaintenanceinspectionsProcess:Plannedmaintenancededuction-catenaryoutage-workpreparation-watersealdeviceinjection-watersealdeviceimmersion-completioninspectionCleaningofwaterdispenserpaneldrainpipeandreservoir1.Liquidinjectionofwatersealdevice:slowlypourdetergentintothetoiletsink,electricteastovetrayandwashbasin.2.Soakthewatersealdevicefor3-4hours.washbasinElectricteastovetrayDirtboxinspectionOverhaulprocessofwastewaterandsewagetankunderthevehicle:plannedmaintenancededuction-catenaryoutage-preworkpreparation-DCpowertransmission-sewagetankinspection-apronrecovery-completioninspection-recordfilling.WastewateranddirttankunderthevehicleDirtboxinspection1.Confirmthattheliquidlevelinthesewagetankis0throughtheliquidleveldisplaydeviceunderthevehicleortheinformationdisplaydeviceonthevehicle,putthedetergentintothedrainoutletofthetoilet,presstheflushbutton,andflushthedetergentintothesewagetanktoreducetheadhesionofdirtontheinnerwallofthesewagetank.2.Usethefourcornerkeytoopentheskirtlockatthecorrespondingpositionofthetrashboxandopentheinspectiondoorofthetrashboxskirt.3.Checktheboxtomakesurethattheboxisnotdeformedandthecoldproofmaterialsarenotdamagedorfallenoff;Checkthattheelectricalboxcoverandconnectorarefirmlyinstalled;Confirmthattheflushingquickconnectors,drainoutletsandvalvesonbothsidesoftheboxarenotlooseorabnormal.LocationplanofdirtsuctionportandflushingportofdirtboxFlushingportDirtsuctionportDirtboxinspection4.Checkwhethertheantiloosemarkoftheboxfixingboltismisplacedorloose.5.Connecttheexternalwatersourceflushingpipetothesewagetankflushingquickconnector,andopenthewatersourceforflushingfor5-10minutes.Thewatervolumeinthesewagetankshallnotexceed400Lduringflushing.Atthesametimeofflushing,connectthesewagesuctionpipetothedrainoutlettosuckoutthesewage.6.Afterblowdown,removetheexternalwatersourceandclosetheblowdownvalve.7.Cleanthedrainoutletandtheresidualdirtatitsbottom.LocationplanofdirtsuctionportandflushingportofdirtboxFlushingportDirtsuctionportToiletflushingnozzlecleaning1.Checkthattheflushingnozzleisfreeofcracks,damageanddirtblockage;2.Cleanthenozzlewithahardbrush;3.Presstheflushbuttonofthetoilettoconductflushingtestandconfirmthattheflushingeffectisgood.4.Ifthesprayangleisnotcorrect,thenozzledirectionneedstobeadjusted.Afteradjustment,presstheflushbuttonofthetoiletagaintoconductaflushingtesttoconfirmthattheflushingeffectisgood.Inspectionforfilterboxintoilet1.Openthecabinetdoorunderthewashbasininthetoiletandopenthefilterboxcover.2.Takeoutthecylindricalfilterscreeninthefilterboxdirectlybyhand,removetheimpuritiesfromthefilterscreen,andwashitwithcleanwatertoensurethatthemeshisfreeofblockageanddebrisresidue.3.Removethesludgeandotherdebrisdepositedinsidethefilterbox,andcleantheinnerwallwithcleanwater.4.Putthefilterscreenbackintothefilterboxandrestoretheoriginalinstallationstate.

RoutinemaintenanceinspectionsOverhaulandmaintenanceintervalsgradeRepaircyclesRepaircontentLevel1repairsRun6000kmor48hoursInteriorpipes,under-carleveldisplaystatuscheck.SecondarymaintenanceI1(20,000kmor20days)Toilet,washroomfilterboxcleaningToilet,washroomfilterboxcleaningM1(100,000kmor90days)Watertankbox,filtercleaning;coldprotection,installationbolts,wiringstatusinspection.Dirtboxbox,toiletnozzlecleaning.Toiletsupplyhose,sewagepipejointstatusinspection.Watertankbox,filtercleaning;coldprotection,installationbolts,wiringstatusinspection.Dirtboxbox,toiletnozzlecleaning.Toiletsupplyhose,sewagepipejointstatusinspection.M2(400,000kmor360days)Electricboilingwaterboilerfilter,heatingchambercleaning.Washfacilitiesareinspectedforcleaning.Electricboilingwaterboilerfilter,heatingchambercleaning.Washfacilitiesareinspectedforcleaning.M3(800,000kmor720days)notThree-levelrepair1.2millionkmor3yearsStatuschecksLevel4maintenance2.4millionkmor6yearsReplacethewatertankanddirtboxheater.Dirtboxgetoffthecarhangerforflawdetection,replacethegasket.Five-levelmaintenance4.8millionkmor12yearsWatertankdrop-offgondolaflawdetection,replacetheinletsolenoidvalve;dirtboxgetoffthecartoreplacetheliquidlevelswitchandTHEHORSEvalvebladder.Replacethetoiletbutterflyvalvewithasealring.五Typicalfaulthandling

TypicalfaulthandlingElectricalcontrolunitDTC

ControlthedisplayThefaultsdisplayedbythemonitorare:Tankfailure(blinkingLED)Novacuum(LEDblinking)Vacuumstart--(LEDblinking)Overflowtoilet(indicatorlightflashescontinuously)Pumpfailure(blinkingLED)Vacuumgeneratorcannotbestopped(LEDflashes)Incaseoffailure,aredlightisilluminated.

TypicalfaulthandlingMaintaintheterminalfaultdisplayMaintainterminalsTankfailure:thewaterlevelofthewastewatertankexceeds95%ortheclearwatertankisemptiedVacuum-free:Thepressureswitchdoesnotoperate

TypicalfaulthandlingMaintaintheterminalfaultdisplayVacuumstart-upTankoverflow:WaterlevelsensorfailurePumpfailureThevacuumgeneratordoesnotstop

TypicalfaulthandlingTypicalfaulthandlingoftoilets序号SymptomCauseanalysisExclusionmethod1ThetoiletisnotflushedandhasnowaterflowWatersupplyfailureCheckthewatersupplysystemCheckthewatersupplysystemCheckthewatersupplysystemThewaterboosterunitisfaultyorcloggedUnblockandreplaceifnecessaryUnblockandreplaceifnecessaryUnblockandreplaceifnecessaryNocompressedairsupplyChecktheairsupplyandpipeline2ThetoiletflushesunevenlyFlushringsareblo