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Originalinstructions
Usermanual
MCS300
Desiccantdehumidier
190TEN-1027-F1404©MuntersEuropeAB2014
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Importantuserinformation
Intendeduse
Muntersdehumidiersareintendedtobeusedforthe 
dehumidicationofair.Anyotheruseoftheunit,or 
usewhichiscontrarytotheinstructionsgiveninthis 
manual,cancausepersonalinjuryanddamagetotheunit 
andotherproperty.
Nomodicationoftheunitisallowedwithoutprior 
approvalbyMunters.Attachmentorinstallation 
ofadditionaldevicesisonlyallowedafterwritten 
agreementbyMunters.
Warranty
Thewarrantyperiodisvalidfromthedatetheunit 
leftourfactory,unlessotherwisestatedinwriting. 
Thewarrantyislimitedtoafreeexchangeofpartsor 
componentswhichhavefailedasaresultofdefectsin 
materialsorworkmanship.
Allwarrantyclaimsmustincludeproofthatthe 
faulthasoccurredwithinthewarrantyperiodand 
thattheunithasbeenusedinaccordancewiththe 
specications.Allclaimsmustspecifytheunittypeand 
fabricationnumber.Thisinformationisstampedonthe 
identicationplate,seesectionMarking.
Itisaconditionofthewarrantythattheunitforthe 
fullwarrantyperiodisservicedandmaintainedas 
describedinsectionServiceandmaintenance.Theservice 
andmaintenancemustbedocumentedforthewarranty 
tobevalid.
Safety
Informationaboutdangersareinthismanualindicated 
bythecommonhazardsymbol:
W
ARNING!
W W
ARNING! ARNING!
Indicatesapossibledangerthatcanleadtopersonalinjury .
CA
UTION!
CA CA
UTION! UTION!
Indicatesapossibledangerthatcanleadtodamagetothe
unitorotherproperty ,orcauseenvironmentaldamage.
NOTE!Highlightssupplementaryinformationforoptimal
useoftheunit.
ConformitywithDirectives
Thedehumidierisinconformitywiththeessential 
safetyrequirementsoftheMachineryDirective 
2006/42/EC,theLowVoltageDirective2006/95/EC, 
theRoHSDirective2011/65/ECandtheEMC 
Directive2004/108/EC.Thedehumidieris 
manufacturedbyanISO9001:2008accredited 
manufacturingorganisation.
Copyright
Thecontentsofthismanualcanbechangedwithout 
priornotice.
NOTE!Thismanualcontainsinformationwhichis
protectedbycopyrightlaws.Itisnotallowedtoreproduceor
transmitanypartofthismanualwithoutwrittenconsentfrom
Munters.
Pleasesendanycommentsregardingthismanualto:
MuntersEuropeAB 
TechnicalDocumentation 
P.O.Box1150 
SE-16426KISTASweden 
e-mail:t-doc@munters.se
iiImportantuserinformation190TEN-1027-F1404
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Tableofcontents
Importantuserinformation...............ii
Intendeduse...........................
Warranty...............................
Safety..................................
ConformitywithDirectives............
Copyright..............................
Tableofcontents...........................iii
1Introduction.................................1
1.1Aboutthismanual.....................
1.2Unintendeduse........................
1.3Safety..................................
1.4Marking................................
2Functionoverview..........................4
3Installation...................................5
3.1General................................
3.2Safety..................................
3.3Inspectionofdelivery.................
3.4Fittingthesilencer.....................
3.5Transport..............................
3.6Storingtheequipment................
3.7Siterequirements.....................
3.8Connectionofductsandhoses.......
3.8.1General.........................
3.8.2Installationexamples..........
3.9Electricalconnections................
3.9.1General........................
3.9.2Safety..........................
3.10Connectingthehumidistat............
ii
ii
4Operation....................................12
ii
ii
ii
1
1
2
3
5Serviceandmaintenance.................15
5
5
6
6
6
7
7
8
8
8
9
9
9
6Faulttracing.................................17
7Capacitydiagrams.........................19
8Fandiagrams................................20
9Sounddata..................................21
10Technicalspecication....................22
11Scrapping....................................23
12ContactMunters............................24
3.10.1General.........................
3.10.2Humidistatconnectionkit.....
4.1General................................
4.2Quickstop..............................
4.3Start....................................
4.3.1Measuredvalues..............
4.3.2Manualoperation..............
4.3.3Automaticoperation...........
4.4Stop....................................
4.5Adjustingreactivationtemperature..
4.6Faultindication........................
5.1General................................
5.2Maintenanceschedule................
5.3Filterreplacement.....................
6.1General................................
6.2Safety..................................
6.3Faulttracinglist........................
10
10
11
12
12
13
13
14
14
14
14
14
15
15
16
17
17
18
190TEN-1027-F1404Tableofcontentsiii
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1Introduction
1.1Aboutthismanual
Thismanualiswrittenfortheuserofthedehumidier.Itcontainsnecessaryinformationforhowtoinstall 
andusethedehumidierinasafeandefcientway.Readthroughthemanualbeforethedehumidieris 
installedandused.
ContactyournearestMuntersofceifyouhaveanyquestionsregardingtheinstallationortheuseofyour 
dehumidier.
Thismanualmustbestoredinapermanentlocationclosetothedehumidier.
1.2Unintendeduse
■Thedehumidierisnotintendedforoutdoorinstallation.
■Thedehumidierisnotintendedforuseinclassiedareaswhereexplosionsafetycompliantequipment
isrequired.
■Thedehumidiermustnotbeinstallednearanyheatgeneratingdevicesthatcancausedamagetothe
equipment.
MCS300
CA
UTION!
CA CA
UTION! UTION!
Donotsit,stand,orplaceanyobjectsontheunit.
1Introduction190TEN-1027-F1404
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MCS300
1.3Safety
Everymeasurehasbeentakeninthedesignandmanufactureofthedehumidiertoensurethatitmeetsthe 
safetyrequirementsofthedirectivesandstandardslistedintheECDeclarationofConformity.
Theinformationinthismanualshallinnowaytakeprecedenceoverindividualresponsibilitiesorlocal 
regulations.
Duringoperationandotherworkwithamachineitisalwaystheresponsibilityoftheindividualtoconsider:
■Thesafetyofallpersonsconcerned.
■Thesafetyoftheunitandotherproperty.
■Theprotectionoftheenvironment.
ThetypesofdangersthatareindicatedinthismanualaredescribedinsectionImportantuserinformation.
W
ARNING!
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-Theunitmustnotbesplashedwithorimmersedinwater.
-Allelectricalinstallationsmustbecarriedoutbyaqualiedelectricianandinaccordancewithlocalregulations.
-Theunitmustbeconnectedtoanearthedelectricaloutlet.
-Donotconnecttheunittoothermainsvoltagethanspeciedontheidenticationplate.
-Donotoperatetheunitifthepowerplugorcordisdamaged,riskofelectricalshock.
-Donotpulltheplugwithwethands,riskofelectricalshock.
-Donotinsertngersoranyotherobjectsintotheairvents,rotatingfansareinside.
-Donotcovertheunitasthatcanblockairintakeoroutletandcauseare.
-Iftheunithasoverturned,cutthepowerimmediately.
-AlwayscontactMuntersforserviceorrepair.
190TEN-1027-F1404Introduction2
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MCS300
1~50Hz 230V
0.2 kW 1.9 kW
Munters Europe AB
Tobo Sweden
M
INCENTIVE GROUP
Type           
Fa br. No.   09 19  19 0XXX XXXXX
1 ~  23 0V  50  Hz 
0,2  kW 
Max
2,1  kW
Munte rs E urop e AB
Isa fjord sga tan  1 
16 4 2 6 Kista , Swe de n
M
IP44
Fa br. yea r 
1,9  kW 
Mad e in S we de n
Weigh t: 25  kg
MCS 300
20 09
1.4Marking
Figure1.1Identicationlabelposition
Figure1.2Identicationlabel
3Introduction190TEN-1027-F1404
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MCS300
2Functionoverview
Thedesiccantrotoristheadsorptiondehumidifyingcomponentintheunit.Therotorstructureis 
comprisedofalargenumberofsmallairchannels.
Thedesiccantrotorismadeofacompositematerialthatishighlyeffectiveinattractingandretainingwater 
vapour.Therotorisdividedintwozones.Theairowtobedehumidied,processair,passesthroughthe 
largestzoneoftherotorandthenleavestherotorasdryair.Sincetherotorrotatesslowly,theincomingair 
alwaysmeetsadryzoneontherotor,thuscreatingacontinuousdehumidicationprocess.
Theairowthatisusedtodrytherotor,reactivationair,isheated.Thereactivationairpassesthrough 
therotorintheoppositedirectiontotheprocessairandleavestherotoraswetair(warm,moistair).This 
principleenablesthedehumidiertoworkeffectively ,evenatfreezingtemperatures.
Figure2.1Functionoverview
1.Rotor4.ReactivationfanA.DryairC.Wetair
2.Reactivationheater5.ProcessfanB.ProcessairD.Reactivationair
3.Filter6.Filter
190TEN-1027-F1404Functionoverview4
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3Installation
3.1General
TheMCS300isintendedforindoorinstallation.Theunitshallbeplacedinanuprightpositiononalevel 
surface.Iftheunitisstoredpriortoinstallation,placeitinaroofedarea,onalevelsurfacewhereitis 
protectedfromimpact,dust,frost,rainoraggressivecontaminants.
3.2Safety
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Theunitisnotintendedforuseinclassiedareaswhereexplosionsafetyequipmentisrequired.
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ARNING!
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Theunitmustnotbesplashedwith,orimmersedinwater.
W
ARNING!
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Donotcovertheunitorobstructtheairvents.
MCS300
W
ARNING!
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Donotoperatetheunitifthepowerplugorcordisdamaged.
W
ARNING!
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Neveroperatetheunitwhenthepowercordisinthestoragecompartment.
W
ARNING!
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Theunitmustnotbeconnectedtoapowersourceotherthanthatspeciedonitsidenticationplate.
W
ARNING!
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Theunitshouldbeconnectedtoanearthedelectricalsocket.
W
ARNING!
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Allelectricalequipmentconnectionsmustbecarriedoutinaccordancewithlocalregulationsandbyqualied
personnel.
W
ARNING!
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Donotoperatetheunitnearanyheat-generatingdevices,ornearammableandhazardousmaterial.
W
ARNING!
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Donotinsertngersoranyotherobjectsintotheairvents.
W
ARNING!
W W
ARNING! ARNING!
Donottrytorepair,dismantleormodifytheunit.
CA
UTION!
CA CA
UTION! UTION!
Donotsit,stand,orplaceanyobjectsontheunit.
5Installation190TEN-1027-F1404
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MCS300
CA
UTION!
CA CA
UTION! UTION!
Ithereisariskforfreezingtemperatures,thewetairductingmustbeinsulated.
3.3Inspectionofdelivery
1.Inspectthedeliveryandcomparewiththedeliverynote,orderconrmationorotherdelivery 
documentation.Makesurethateverythingisincludedandnothingisdamaged.
2.ContactMuntersimmediatelyifthedeliveryisnotcompleteinordertoavoidinstallationdelays.
3.Iftheunitistobeputintostoragepriortoinstallation,seesectionStoringtheequipment.
4.Removeallpackagingmaterialfromtheunit,andmakesurethatnodamagehasoccurredduring 
transportation.
5.AnyvisibledamagemustbereportedinwritingtoMunterswithin5daysandpriortoinstallationof 
theunit.
6.Disposeofthepackagingmaterialaccordingtolocalregulations.
3.4Fittingthesilencer
Attachthesilencertotheprocessairinlet,seeFigure3.1.
Figure3.1Fittingthesilencer
3.5Transport
Usethehandlewhenliftingthedehumidier.Ifpossible,useapalletloadertomovethedehumidier.Itis 
recommendedtousetheoriginalpackagingwhenshippingthedehumidier.
190TEN-1027-F1404Installation6
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MCS300
3.6Storingtheequipment
Followtheseinstructionsifthedehumidieristobestoredpriortoinstallation:
■Placethedehumidierinanuprightpositiononahorizontalsurface.
■Re-usethepackagingmaterialtoprovideprotectionfortheunit.
■Protectthedehumidierfromphysicaldamage.
■Storethedehumidierundercoverandprotectitfromdust,frost,rainandaggressivecontaminants.
3.7Siterequirements
Thedehumidierisonlyintendedforindoorinstallation.Avoidinstallingthedehumidierwherethereisa 
riskofwaterenteringtheunit,orinaverydustyenvironment.RefertoMuntersforadviceifindoubt. 
Forunitandservicedimensions,seesection10,Technicalspecication.
NOTE!Itisimportantthattheintendedinstallationsitemeetstherequirementsinordertoachievethebest
possibleperformanceandtrouble-freeoperation.
7Installation190TEN-1027-F1404
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MCS300
3.8Connectionofductsandhoses
3.8.1General
Followtheinstructionsbelowwhenattachingductsorexiblehosestotheunit'sairconnections.
■Ductlengthshouldbekeptasshortaspossibletominimisestaticpressureloss.
■Allductandhoseconnectionsmustbeairtightandvapourtighttoensurefullperformance.
■Toretainthecorrectairowforreactivationair,anairdampermustbeinstalled.Thisdamperistobe
installedinthewetairoutletducting,seeFigure3.2andFigure3.3.Foradjustmentofairow ,followthe 
instructionsinsection4.5,Adjustingreactivationtemperature.
■Ductingforwetairshallbeinstalledatadownwardinclinetoenablecondensatetodrain.Thewet
airductingshouldbeprovidedwithsuitabledrainageatlowpointstopreventthecollectionof 
condensationwater.Alternatively,condensationcanbeavoidedbyinsulatingtheductwithatleast 
25mmofsuitableinsulatingmaterial.
■Covertheductopeningwithmeshtopreventbirdsandrodentsfromenteringtheunit.Positionthe
openingsothatrainandsnowcannotenterthelines.
■Thewetairductorhosemustbecorrosionresistantandabletowithstandtemperaturesupto70°C.
CA
UTION!
CA CA
UTION! UTION!
Ifthereisriskforfreezingtemperatures,thewetairductingmustbeinsulated.
3.8.2Installationexamples
Closedairowsystem
Thedehumidierisplacedinthespacetobedehumidied.Thewetairistransportedoutdoorswithducting. 
Noconnectionismadetothedryairoutlet,seeFigure3.2.Theadvantagewiththisinstallationmethodisa 
simplersetup;ductingdoesnotneedtobeconnectedtothedryairoutlet.
Figure3.2Installationinaclosedairowsystem.
A.DryairD.Leakageair
B.ProcessairE.Wetair
C.Connectiontting
1)
Fittingwithdiameter80mm(forexample,LindabSafeNPUnippleoralternateLindabDamperDRU80).
190TEN-1027-F1404Installation8
1)
F.Reactivationair
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Openairowsystem
Thedehumidierisplacedoutsidetheareatobedehumidied.Dryairistransportedwithductingtothe 
spacetobedehumidiedandthewetairisdischargedinthevicinityoftheunitormovedoutdoors,see 
Figure3.3. 
Theinstallationisusedtosolvethefollowingproblems:
-Whenmoisturedamagedobjectsaretobedehumidied.
-Dustorcorrosioncausingparticlesarepresentinaspacewheredryairwillbesupplied.
-Topreventmoisturefromenteringthedehumidiedspace/object.
MCS300
Figure3.3Installationinanopenairowsystem
A.DryairE.Wetair
B.ProcessairF.Reactivationair
C.Connectiontting
D.Surplusair
1)
Fittingwithdiameter80mm(forexample,LindabSafeNPUnippleoralternateLindabDamperDRU80).
2)
Fittingwithdiameter125mm(forexample,LindabSafeNPUnipple).
1)
G.Connectiontting
2)
3.9Electricalconnections
3.9.1General
Includedwithdeliveryisa3.5mlongpowercablewithaplugforconnectiontoanearthedoutlet.The 
voltageandfrequencyarespeciedontheunit’ sidenticationplate.
3.9.2Safety
W
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Theunitmustbeconnectedtoanearthedelectricaloutlet.
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Theunitmustnotbeconnectedtoothermainsthanspeciedontheunit’sidenticationplate
9Installation190TEN-1027-F1404
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MCS300
3.10Connectingthehumidistat
3.10.1General
Theconnectionsocketforthehumidistatislocatedinthestoragecompartmentforthepower 
cable,seeFigure3.4.Theappropriateplugforthehumidistatisdeliveredwiththeunit,seesection
3.10.2,Humidistatconnectionkit.Thehumidistatshallbemounted1–1.5m.abovetheoorandpositionedso
thatitisnotexposeddirectlytodryairfromtheunitorincomingmoistairfromopeningandclosingdoors. 
Itshouldnotbeplacedclosetoaheatsource,orsothatitisexposedtodirectsunlight.Thehumidistatshall 
beasinglestagehumidistatandconnectedsothatthecontrollingcircuitclosesasrelativehumidityincreases. 
Theconnectingcableshallbescreenedandhavecopperconductorswithaminimumcross-sectionarea 
of2x0.75mm
2
.
Figure3.4Connectionsocketforhumidistat(A)
190TEN-1027-F1404Installation10
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3.10.2Humidistatconnectionkit
Followtheinstructionsbelowtoassembleandconnectthehumidistatconnectionkit.
1.Connecttheleadstopins1and2,andthescreentotheearthpin.
Figure3.5Connectionofleads
A.LeadconnectionsB.Screenconnections
MCS300
2.Afxtheterminal(2)totheplug(1).
3.Tightentheterminalscrews(3).
4.Afxthecover(4)totheplug(1).
5.Afxtheange(5)tothecover(4).
Figure3.6Humidistatconnectionkitassembly
11Installation190TEN-1027-F1404
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MCS300
Man 
Auto 1 
Auto 2
KWH
Temp
4Operation
4.1General
Thedehumidierhasthreeoperatingmodes,seeFigure4.1.
Man:Thedehumidier’sfans,rotorandreactivationheateroperatecontinuously. 
Auto1:Thedehumidier’sfans,rotorandreactivationheaterarestarted/stoppedbythehumidistat. 
Auto2:Thedehumidier’ sfansandrotoroperatecontinuously.Thereactivationheaterisstartedand
stoppedbythehumidistatonly .Thismodeofoperationisusedtomaintainaircirculation.Ifrelative 
humidityrisestothehumidistatssetpoint,thereactivationheaterstarts.Thereactivationheaterstopswhen 
relativehumiditydropsbelowthesetpoint.
NOTE!ForthedehumidiertofunctioninAuto1and2,asinglestagehumidistatmustbeconnectedtotheunit.
Seesection3.10,Connectingthehumidistat.
NOTE!Inhumidistatoperationmode,thereisabuilt-infunctionthatdelaysre-startofthedehumidierfor2
minutes.Seesection4.3.3,Automaticoperation.
Figure4.1Controlpanel,on-offswitchandhumidistatsocket
A.ControlpanelE.Storagecompartment
B.DehumidierF.On-offswitch
C.MeasurementselectorG.Humidistatsocket
D.OperatingmodeselectorH.Powercable
4.2Quickstop
Stoptheunitwiththeon-offswitchatthefrontoftheunit,orpullouttheplugfromthewalloutlet.
190TEN-1027-F1404Operation12
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4.3Start
Man 
Auto 1 
Auto 2
KWH
Temp
4.3.1Measuredvalues
Figure4.2Controlpanel
MCS300
C.Measurementselector
D.Operatingmodeselector
Thefollowingparameterinformationisdisplayedonthecontrolpanel:
Totaloperatingtime
Powerconsumptionduringaspecicperiod
Reactivationtemperature
Changetheparameterdisplaybypressingthemeasurementselectorbuttononthecontrolpanel. 
Measurementofpowerconsumptioncanberesetbeforeeachdehumidifyingoccasionorperiodofuse. 
Toresetthemeasurement:
1.Switchofftheunit
2.PressboththeMeasurementandOperatingModeSelectorsatthesametimeandthenswitchtheunit 
On(positionI)whilestillpressingtheselectors.Keeptheselectorspressedforatleast5secondsto 
resettheconsumption.
13Operation190TEN-1027-F1404
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MCS300
Man 
Auto 1 
Auto 2
KWH
Temp
4.3.2Manualoperation
1.Resetmeasurementofpowerconsumptionasrequired,seesection4.3.1,Measuredvalues.
2.Switchtheon-offswitchtopositionI,seeFigure4.1.
3.SelecttheManoperatingmodebypressingtheoperatingmodeselectorbutton.
4.3.3Automaticoperation
ForthedehumidiertooperateinAuto1or2,thehumidistatmustbeconnectedtothehumidistatsocketof 
theunit,seesection3.10,Connectingthehumidistat.
1.Resetmeasurementofpowerconsumptionasrequired,seesection4.3.1,Measuredvalues.
2.Adjustthehumidistattothedesiredsetpoint.
3.Switchtheon-offswitchtopositionI,seeFigure4.1.
4.SelecttheAuto1or2operatingmodebypressingtheoperatingmodeselectorbutton,seeFigure4.1.
NOTE!Connectionofthehumidistatactivatesabuilt-in2minutesdelayfunctionforre-start.Theopeningand
closingofthehumidistatcircuitwithinthe2minutesperiodwillnotstartthedehumidieragainbecauseofthedelay
function.Incasethehumidistatcircuithasbeenopenedformorethan2minutesandthencloses,thedehumidier
willstartimmediately.Thepurposewiththisfunctionistopreventthecircuitfromcontinuouslycyclingonandoff,in
casethehumidistatisinstalledinapoorlychoosenlocation.
4.4Stop
Switchtheon-offswitchtoposition0,seeFigure4.1.
4.5Adjustingreactivationtemperature
Ifadamperisinstalledonthewetairside,thedehumidier’sreactivationtemperatureisadjustedasfollows:
1.Whiletheunitisoperating,pressthemeasurementselectorsothereactivationtemperatureisshown 
onthedisplay,seeFigure4.2.
2.Adjustthedamperandcheckthereactivationtemperature.Whenthedamperisproperlyadjusted,the 
differencebetweenthereactivationtemperatureandtheambienttemperatureshouldbeabout95°C.
NOTE!Atstart-up,thedisplayshowsLO°Cforreactivationtemperaturesbelow65°C.
4.6Faultindication
Excessivelyhighreactivationtemperaturesareindicatedonthecontrolpanel,seeFigure4.3andTable6.1.
-Fixedlight,thedehumidierisstillrunning.
-Blinkinglight,thedehumidierhasstopped.
E.Indicationfortemperaturecontrolandtrippedthermostat
Figure4.3Faultindication
190TEN-1027-F1404Operation14
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5Serviceandmaintenance
5.1General
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-Donotattempttorepair,dismantleormodifythisunit.
-Removethemainsplugfromthesocketbeforestartinganymaintenancework.
Thedehumidierisdesignedforcontinuoususeoveralongperiodoftimewithaminimalamountof 
supervision.Undernormaloperatingconditions,maintenancerequirementsareminimal.Theservice 
intervaldependsmainlyontheoperationalconditionsandworkingenvironment.
NOTE!ItisrecommendedtocontactMuntersforserviceorrepair.Operatingfaultscanoccuriftheunitis
maintainedinsufcientlyorincorrectly.
MuntersServicecanofferaserviceplanadaptedtosuittheconditionsofaspecicinstallation.Seecontact 
addressesonthebackpageofthismanual.
5.2Maintenanceschedule
MCS300
Muntersrecommendsthefollowingmaintenanceschedule.Theschedulecontainsinspectionand 
maintenanceproceduresaswellastherecommendedintervalsforunitsusedundernormaloperatingand 
environmentalconditions.Iftheprocessaircontainsalotofdust,preventativemaintenanceshouldbe 
performedatshorterintervalsthanthosespeciedbelow.
Component
ProcessandReactivationlter.
Unit,general
Humidistat.
3-6months12months
Cleanthelterhousingandchangelteras 
required.
Checkforphysicaldamageandcleanunit 
exteriorifnecessary .
N/AChecksensorfunctionsandcalibrateif
Inspection/Maintenance
Cleanlterhousingandchangelter.
Checkforphysicaldamageandcleanunit 
exteriorifnecessary .
necessary.ContactyourMunters’product 
servicedepartmentasrequired
Table5.1Maintenanceschedule
15Serviceandmaintenance190TEN-1027-F1404
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MCS300
5.3Filterreplacement
Figure5.1Filterremoval
1.Toremovethelter,slidetheltergratingupwards,thendownwardsandoutaccordingtoFigure5.1.
2.Cleanlterhousingandgratingbeforettingthenewlter.
190TEN-1027-F1404Serviceandmaintenance16
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6Faulttracing
6.1General
Thischapterisintendedtofacilitatebasicfaulttracingandprovideinstructionsonactionstoremedy 
problems.
6.2Safety
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Alwaysunplugthedehumidierbeforeanymaintenanceorrepairworkiscarriedout.Incaseofaxedinstallation
wheretheplugisbeingreplacedbyacircuitbreaker,thepowermustbeswitchedoffandthecircuitbreakerlocked.
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Theunitmustnotbeconnectedtoothermainsthanspeciedontheunitsidenticationplate.
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Adjustments,maintenanceandrepairsmustonlybecarriedoutbytrainedandqualiedpersonnel.
MCS300
W
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Duetotheriskofelectricalshock,theunitmustnotbeopenedbyanyoneotherthantrainedandqualied
personnel.
17Faulttracing190TEN-1027-F1404
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MCS300
6.3Faulttracinglist
GothroughthefollowingfaulttracinglistbelowbeforecontactingMunters’productservicedepartment. 
Thelistprovideshelpinidentifyingtypesoffaultsthatareeasytoremedywithouttheassistanceofspecially 
trainedpersonnel
FaultsymptomPossibleCauseCorrectiveaction
Unithasstopped.
Dehumidierhasstopped
andfaultindicationis
blinking.
Dehumidierisrunning
andconstantfault
indication.
capacityhasdiminished.
On-offswitchturnedoffbymistake.Placetheon-offswitchintheonpositionandcheckthat
dehumidierstarts.
Nomainspowertounit.Checkmainspowertounit.
Dehumidierswitchedtoautomaticmode
bymistakewithnohumidistatconnected.
Humidistatfault(automaticmodes).
Thermostatforreactivationheaterhas
tripped.
Warningforabnormalreactivetemperature
increase.
Airowsarefaulty .Checkductingandltersforblockageandleakage. Dehumidication
Humidistatnotfunctioningproperly
(automaticmodes)
Settheoperatingmodetomanualmodeandcheckthatthe
dehumidierstarts.
Settheoperatingmodetomanualmodeandcheckthattheunit
starts.Iftheunitstarts,thehumidistatisprobablyatfault.
Checkthehumidistatbyseeingifthedehumidierstarts
whenthehumidistatsetpointisreduced.Resetthehumidistat
setpointafterthecheck.Calibratethehumidistatifnecessary.
ContactMunters’productservicedepartment.
Checkthatltersandductingforincomingairarenotblockedby
foreignobjectsorpluggedbydirt.Increasereactivationairow
byslowlyopeningthedamper .
Checkhumidistatfunctionandcalibrateasrequired.Contact
Muntersproductservicedepartment.
Table6.1Faulttracinglist
190TEN-1027-F1404Faulttracing18
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7Capacitydiagrams
0,4
0,8
1,2
1,6
kg/h
3
1
2
°C
-10 0
10
20
30
0
2,0
230V, 50 H z
80 % R H
60 % R H
40 % R H
0,3
0,6
0,9
1,2
kg/h
3
1
2
°C
-10 0
10
20
30
0
1,5
115V, 50/60 Hz
80 % R H 
60 % R H
40 % R H
Approximatecapacityinkg/h.Fordetailedinformation,pleasecontactyournearestMuntersofceorrefer 
toMunters’DryCapprogram.
MCS300
Figure7.1
Figure7.2
1.Processairtemperature,ºC2.Processairrelativehumidity ,%RH3.Dehumidicationcapacity,kg/h
19Capacitydiagrams190TEN-1027-F1404
(moistureremovalkg/hour)
Page 23

MCS300
AA
B
B
C
D
115/23 0V, 50 Hz
600
115V /60 H z
B
B
A
A
C
D
8Fandiagrams
Figure8.1Fandiagrams(115/230V,50Hz)
Figure8.2Fandiagrams(115V,60Hz)
A.Staticpressure(Pa)C.Processair
B.Airowm3/hD.Reactivationair
190TEN-1027-F1404Fandiagrams20
Page 24

9Sounddata
SeeFigure3.2forclosedairowsystemexample.
MCS300
Noise
Path
A30069,379-23,8-11,7-9,9-10,5-17,5-19,3-22,3-25,6
A
Model
MCS
1
3006878,3-21,5-10,7-9,6.-10,5-19,1-21-25-30,5
dB(A)LwtdB
1/632/1253/2504/5005/10006/20007/40008/8000
CorrectionofKokatISO-bandNo./CenterFrequency(Hz)
Table9.1Sounddata(115/230V,50Hz)
SymbolsNoisePath
Lwt:T otalNoiseleveldB(Rel.10-12W)A:Processairinletopenandwetairoutletducted
Lw:NoisePowerlevelinOctaveBanddB(Rel.10-12W)A1:Dittobutincludingsilencer
Kok:CorrectionforCalculationofLw(L
w
=Lwt+K
)
ok
21Sounddata190TEN-1027-F1404
Page 25

MCS300
10Technicalspecication
TechnicaldataMCS300230V/50Hz115V/50Hz115V/60Hz
Processair
Systemairow(m³/h)
Nominalairowwithducting(m³/h)
Minimumavailablestaticpressure(Pa)
Reactivationair
Nominalairowwithducting(m³/h)
Minimumavailablestaticpressure(Pa)
Fanmotor
Motor,power(kW)
Motor,current(A,1~)
Drivemotor
Motor,power(kW)
Motor,current(A,1~)
Reactivationheater
Reactivationheater,power(kW)
Temperatureincrease(°C)
Electricalpowerandnominalcurrent(kW)
Maximumelectricalpower(kW)
Filter
Filterkit(ArticleNo.)130025/1KIT130025/1KIT130025/1KIT
Temperaturerange
Permittedambientoperatingtemperature
Otherdata
Protectionform
FanmotorwindinginsulationclassFFF
Maximumsoundlevelwithoutducting(dBA)
Totalunitweight(kg)
Rotortype
Dimensions
Depth(mm)
Width(mm)
Height(mm)
1)
Thespeciedguresarenominalvaluesbasedoninlettemperaturesatthefansof20°Candanairdensityof1,2kg/m
(1)
330330330
300300300
200200200
(1)
604760
200200250
0,150,150,15
1,052,12,1
0,0020,0020,002
--.-
2,01,51,5
957373
2,21,71,7
-20to+40°C-20to+40°C-20to+40°C
IP44IP44IP44
Max.60,0Max.60,0Max.60,0
252525
HPSHPSHPS
400400400
400400400
550550550
3
.
Table10.1Technicalspecication
190TEN-1027-F1404Technicalspecication22
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11Scrapping
Theunitmustbescrappedinaccordancewithapplicablelegalrequirementsandregulations.Contactyour 
localauthorities.
Therotormaterialisnotcombustible,andshouldbedepositedlikeglassbrematerials.
Iftherotorhasbeenexposedtochemicalsthataredangeroustotheenvironmenttheriskmustbeassessed. 
Thechemicalscanaccumulateintherotormaterial.Takethenecessaryprecautionstocomplywith 
applicablelegalrequirementsandregulations.
W
ARNING!
W W
ARNING! ARNING!
Iftherotoristobecutinpieces,wearasuitableCEmarkedfacemaskselectedandttedinaccordancewiththe
applicablesafetystandardstoprotectfromthedust.
MCS300
23Scrapping190TEN-1027-F1404
Page 27

MCS300
12ContactMunters
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190TEN-1027-F1404ContactMunters24
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www.munters.com