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2018-11-19

Common questions

2018-11-19

Common questions

Q1.Howmanyinstallationmethodsdoescompressorhave?  ANSWER:1.Installationmethods:basefixed2.Holefixed+basefixed3.HoleFixedQ2.Howmanyrefrigerantsaresuitableforcompressors?ANSWER:Generalclassificationofrefrigerants:inorganiccompounds,organiccompounds,mixtures(azeotropicandnon-azeotropic)  InorganicCompoundRefrigerants:addIntegerPartoftheRelativeMolecularWeightofInorganicCompoundstoR700 NH3(ammonia)    H2O(water)CO2(carbondioxide)Molecularweight 171844 No.R717R718R744Organiccompoundrefrigerants:R134a(tetrafluoroethane)chemicalformulaisCH2FCF3.Mixedrefrigerants(azeotropicandnon-azeotropic):       ThenumberofazeotropicrefrigerantmixturesisR5,startingfromR500,suchasR501,R502,etc. Thenumberofnon-azeotropicrefrigerantsisR4,suchasR404a,R407C,R410,etc. R404Aisanon-azeotropicrefrigerantcomposedofHFC125,HFC-134aandHFC-143. R407cisaternarynon-azeotropicrefrigerantcomposedofR32,R125andR134ainproportionof23:25:52.Q3.WhatdoesPWMcontrolmean? ANSWER:CANcontrol:ThecompressorusesCANbusprotocoltocommunicatewiththeair-conditioningsystemcontroller,sendinginformationlikecompressorstart-stop,rotationspeed,faultinformation,statusinformationetc.Compressorstart-stop,operationandinformationfeedbackcanbecontrolledbythisway. PWMcontrol:ThecompressorreceivesPWMdutycyclesignalsentbytheairconditioningsystemcontrollertoadjustthespeed,thusrealizingthefrequencyconversionandspeedregulationfunction. Fixed-speedcontrol:Thecompressorrunsatafixedspeed(e.g.3000rpm,4000rpmetc.)andcontrolsthestartandstopofthecompressorwithhigh-voltageON/OFForlow-voltageON/OFF.

2018-11-19

Product Instructions

2018-11-19

Product Instructions

1.Thecompressormustbeinstalledinthedirectionoppositetothehorizontalplaneasshowninthemainview.Pleasedonotremovetheplugwhileinstalling,soastoavoidrefrigeratedoilleakage; 2.Thecompressorshouldbesealedwith0.005MPa-0.015MPadrynitrogengaswhenitleavesthefactory.Ifthereisnopositivepressureinthecompressorwhenbeingopened,pleasenotifythesupplierbeforeusingit;3.Thecompressorshouldbeinstalledintothesystemandvacuumizedwithin10minutesafteropeningtheintaking/ventingplugs(includingpressureplateandsealingplug); 5.Thecompressorshellandvehiclebodyshouldbereliablygrounded; 6.TheinstallationthreadofcompressorpipelineisM6,withthreaddepthof13mm.Thethreadisrequiredtobescrewedinthedepthof10-12mm,andthetighteningtorqueis10-13Nm; 7.Sticktothedefinitionofpowersupplyandsignalinterfaceonthedrawings;reversedgraftingisforbidden,otherwisethecontrolpartofthecompressormaybedamaged; 8.Lift,pullanddragthepowerandsignallinesofthecompressorisstrictlyforbidden,thoseactionsmaycausepoorcontactandaffectthecompressor; 9.Usedrynitrogenorairtodetecttheairtightnessofthecompressor,whileoxygenisforbiddentobeused,otherwisethecompressormayexplode;   10.Condenserfanandevaporatorfanofthesystemarebetterbeingoperatedbeforethecompressorisstarted.Condenserfanandevaporatorfanmustbepostponedtoturnoffafterthecompressorisstopped; 11.Thecompressorelectricalconnectionshouldbestrictlyinaccordancewithtechnicalrequirements.Thepositiveandnegativestagesofhigh-voltagepowersupplycannotbegraftedreversely,thedefinitionsoflow-voltageportsconnectorsneedtobecoherent; 12.Thewholevehicleneedstohaveapre-chargecircuitforthecompressortoprotectthewholevehiclecircuit.Thecontrolleritselfhasapre-chargecircuit; 13.Inordertoprotectthecompressor,theevaporatormustbeinstalledwithatemperaturesensor,whichcanstopthecompressorundertheconditionoflowevaporationtemperature; 14.Inordertoprotectthecompressor,high-voltageprotectionswitchandlow-voltageprotectionswitchmustbeinstalledintheair-conditioningsystempipeline;15.Inordertoprotectthecompressor,theair-conditioningsystemmusthavesufficientrefrigerantsandlubricants,andcontainnoair,moistureorforeignmatter.

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