Munters DesiCool Operating Manual

Operatingmanual

Originalinstructions

DesiCool™

AirTreatmentSystem

TEN-DSC-D1401©MuntersEuropeAB2014

Tableofcontents

Tableofcontents...........................ii

1Introduction.................................1

1.1Denition...............................

1.2Aboutthismanual.....................

1.3Warnings...............................

1.4Warranty...............................

1.5Inspectionofdelivery..................

1.6Technicaldata.........................

2Safety.........................................3

2.1Intendeduse...........................

2.2Safeinstallation,operationand

maintenance...........................

2.2.1Electricalhazard...............

2.2.2Physicalhazard................

2.2.3Propertyhazard................

2.3Residualrisks..........................

2.4Warningsigns.........................

2.5Emergencystop.......................

3Systemdesignandfunction..............9

3.1Mainfunction..........................

3.2Systemdesign.........................

3.3Basicsensorslayout..................

3.4Pre-andpost-treatment..............

4Maincomponentsdescription............13

4.1Desiccantrotor........................

4.1.1Function........................

4.1.2Rotormaintenance............

4.1.3Rotorseals,drivebeltanddrive

motor...........................

4.2Thermalrecoveryrotor................

4.2.1Function........................

4.2.2Rotor............................

4.2.3Rotorseals,drivebeltanddrive

motor...........................

4.3Watercoils.............................

4.3.1Coolingcoils....................

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5Commissioning............................24

6Serviceandmaintenance.................26

7Scrapping....................................31

8Supplements................................32

9ContactMunters............................33

4.3.2Heatingcoils...................

4.3.3Frostprotection................

4.3.4Dropletseparator..............

4.3.5Cleaning........................

4.3.6Stoppingwaterowtothe

coils.............................

4.4Evaporativecoolers/humidiers.....

4.5Fans....................................

4.5.1Fantypes.......................

4.5.2Maintenance...................

4.6Filters...................................

4.6.1Filtertypes......................

4.6.2Filtermaintenance.............

4.6.3Panellters.....................

4.6.4Baglters.......................

4.7Dampers...............................

4.8Flexibleconnections..................

5.1Checksbeforestartingup.............

5.2Inspectionofevaporativecoolers....

5.3Startingup.............................

6.1Safety..................................

6.2General................................

6.3Serviceoptions........................

6.4Extendedwarranty....................

6.5Serviceandmaintenanceschedule..

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iiTableofcontentsTEN-DSC-D1401

DesiCool

1Introduction

1.1Denition

TheAirTreatmentSystemdescribedinthismanualishereafterreferredtoasthe“unit”.

1.2Aboutthismanual

Thisinstructionmanualcontainsimportantsafetyinformation,aproductdescriptionandmaintenance
instructionsforthedeliveredairtreatmentunit.Readallrelevantpartsofthismanualbeforeoperatingor
performinganyworkontheunit.Observanceofthisinformationwillhelpyoutoavoiddanger,tominimise
repaircostanddowntime,andtoincreasethereliabilityandtheservicelifeoftheairtreatmentunit.

Thismanualshouldbestoredinapermanentlocationclosetotheunit.

Thismanualdoesnotdescribeinfullallthemaintenanceworkrequiredtoguaranteethelongevityand
reliabilityofthistypeofequipment.AlwayscontactMuntersforserviceandrepairs,toensuresafeandlong
lastingoperationoftheunit.

Thecontentsofthismanualcanbechangedwithoutpriornotice.

NOTE!Thismanualcontainsinformationwhichisprotectedbycopyrightlaws.Itisnotallowedtoreproduceor

transmitanypartofthismanualwithoutwrittenconsentfromMunters.

Pleasesendanycommentsregardingthismanualto:

MuntersEuropeAB
TechnicalDocumentation
P.O.Box1150
SE-16426KISTASweden
e-mail:[e-mail]

1.3Warnings

Informationaboutdangersareinthismanualindicatedbythecommonhazardsymbol:

W

ARNING!

W W

ARNING! ARNING!

Indicatesapossibledangerthatcanleadtopersonalinjury.

CA

UTION!

CA CA

UTION! UTION!

Indicatesapossibledangerthatcanleadtodamagetotheunitorotherproperty,orcauseenvironmentaldamage.

NOTE!Highlightssupplementaryinformationforoptimaluseoftheunit.

1.4Warranty

ThewarrantyisbasedonthetermsofsaleanddeliveryofMunters.Thewarrantyisnotvalidifrepairsor
modicationsarecarriedoutwithoutthewrittenagreementofMunters,oriftheunitdoesnotoperateunder
theconditionsagreedwithMunters.Damagesresultingfromnegligence,poormaintenanceorfailureto
complywiththerecommendationswillnotbecoveredbythewarranty.

TEN-DSC-D1401Introduction1

DesiCool

Itisaconditionofthewarrantythattheunitforthefullwarrantyperiodisservicedandmaintainedbya
qualiedMuntersengineerorMuntersapprovedengineer.Accesstospecicandcalibratedtestequipment
isnecessary.Theserviceandmaintenancemustbedocumentedforthewarrantytobevalid.

Thewarrantyislimitedtoafreeexchangeofpartsorcomponentswhichhavefailedasaresultofdefects
inmaterialsorworkmanship.

Commissioning/Start-upinspection"S"byMuntersismandatorytovalidatethefullwarranty.

AlwayscontactMuntersforserviceorrepair.Operatingfaultscanoccuriftheunitismaintained
insufcientlyorincorrectly.

1.5Inspectionofdelivery

Uponreceipt,inspecttheequipmentbeforesigningthedeliverynote.Specifyanydamageonthedelivery
noteandsendaregisteredletterofcomplainttothelastcompanyresponsiblefortransportingthe
equipmentwithinthreedays.InformMuntersofthiscomplaint.

Theunitmustbefullyinspectedwithinoneweekfromarrival.Ifahiddenfaultisdiscovered,senda
registeredletterofcomplainttothehaulierwithintheweekfollowingdelivery,andnotifyMuntersofthis.

1.6Technicaldata

ThetechnicaldataforaspecicunitcanbefoundintheseparateDatasheetissuedforeachunit.

2IntroductionTEN-DSC-D1401

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2Safety

2.1Intendeduse

TheunitdeliveredbyMuntersmustonlybeusedforthetreatmentofair.Thisincludesltering,heating,
cooling,humidifying,dehumidifyingandtransportingair.Muntersexplicitlyrulesoutanyotheruse.

Theunitisdesignedtomeetthesafetyrequirements,directivesandstandardslistedintheECDeclarationof
Conformity.

NomodicationoftheunitisallowedwithoutpriorapprovalbyMunters.Attachmentorinstallationof
additionaldevicesisonlyallowedafterwrittenagreementbyMunters.

TheconditionsofoperationspeciedintheseparateDatasheetmustbeobservedabsolutely.Anyotheruse
oftheequipmentcancausepersonalinjuryanddamagetotheunitandotherproperty.

2.2Safeinstallation,operationandmaintenance

Greatefforthasbeenplacedonthedesignandmanufactureoftheunit,tocomplywithapplicablesafety
aspectsforthistypeofequipment.

Theinformationinthismanualincludessuggestionsforbestworkingpracticeandshallinnowaytake
precedenceoverindividualresponsibilitiesorlocalregulations.

Duringoperationandotherworkwithamachineitisalwaystheresponsibilityoftheindividualtoconsider:

■Thesafetyofallpersonsconcerned.

■Thesafetyoftheunitandotherproperty.

■Theprotectionoftheenvironment.

Alwayscarryoutriskassessmentsbeforedoinganyworkontheunit.

TEN-DSC-D1401Safety3

2.2.1Electricalhazard

1

0

DesiCool

Figure2.1Electricalhazard

W

ARNING!

W W

ARNING! ARNING!

Installation,adjustments,maintenanceandrepairsmustonlybecarriedoutbyqualiedpersonnelwhoare

awareoftherisksinvolvedwhenworkingwithequipmentoperatingwithhighelectricalvoltageandhighmachine

temperatures.

W

ARNING!

W W

ARNING! ARNING!

Donotopendistributionboxesorotherelectricalconnectionboxes.Theunitisconnectedtohighvoltagewhich

cancauseseriousinjuryordeath.

W

ARNING!

W W

ARNING! ARNING!

Beforedoinganyserviceormaintenanceworkontheunitmakesurethatallelectricalequipmentisdisconnected

fromthepowersupply,andsecuredagainstreconnection.

W

ARNING!

W W

ARNING! ARNING!

Theunitmustneverbeconnectedtoavoltageorfrequencyotherthanthatforwhichitwasdesigned.Refertothe

unitidenticationplate.

Figure2.2Secureagainstreconnection

W

ARNING!

W W

ARNING! ARNING!

Anyexternalelectricalequipment,forexampleaportablelamp,mustbeconnectedtoanearthfaultbreaker.

W

ARNING!

W W

ARNING! ARNING!

Commissioningandinitialstart-upoftheunitmustbecarriedoutbyauthorizedpersonnelonly.

4SafetyTEN-DSC-D1401

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2.2.2Physicalhazard

W

ARNING!

W W

ARNING! ARNING!

Rotatinghazard.Theunitcontainsrotatingfansandothermovingparts.

Topreventpersonalinjury ,theunitmustberunwithallpaneldoorsclosedandallremovablepanelsandprotective

gridsproperlyinplace.Neveropenthedoorsorpanelsbeforeallfansandothermovingpartshavecometoa

completestop,andthemainpowerisswitchedoff.

Fansandothermovingpartscanstartautomaticallyandwithoutwarning.

W

ARNING!

W W

ARNING! ARNING!

Theunitsectionsareheavy.Useonlyapprovedliftingequipmentadaptedtotheweightofthesectionstoavoid

accidents.

W

ARNING!

W W

ARNING! ARNING!

Makesurethatallpipecouplingsareproperlytightenedbeforethemediumsupplyforcoolingorheatingcoils

isturnedon.

W

ARNING!

W W

ARNING! ARNING!

Cleaningagents,coolingmedia,oilandgreasearesubstancesthataredangeroustopersonalhealthandtothe

environment.Theymustnotbeallowedtodrainawayintothesoilorthepublicsewersystem.Thedisposalofsuch

substancesmustbeeffectedinaccordancewithlocalandnationallawandregulations.

TEN-DSC-D1401Safety5

2.2.3Propertyhazard

CA

UTION!

CA CA

UTION! UTION!

Theunitisnotintendedforuseinclassiedareas,norfortreatingairpollutedwithsolvents,dustorother

aggressive,corrosiveorabrasiveparticles.

CA

UTION!

CA CA

UTION! UTION!

Failuretocorrectlyadjusttheairowscancausemalfunctionoftheunit.

Anydamagetotheunitresultingfromincorrectadjustmentoftheairowscaninvalidatethewarrantyoftheunit.

Theunitmustnotberunformorethanafewminutesbeforesettingupthecorrectairows.

CA

UTION!

CA CA

UTION! UTION!

Serviceandmaintenanceworkshouldonlybecarriedoutbyqualiedandtrainedpersonnel.Operatingfaultscan

occuriftheunitismaintainedinsufcientlyorincorrectly.

CA

UTION!

CA CA

UTION! UTION!

Neverclimbontheunitoruseitasscaffolding.

DesiCool

6SafetyTEN-DSC-D1401

DesiCool

2.3Residualrisks

Inordertoavoidthepossibledangersinoperatingormaintainingtheunit,necessaryprotectionshavebeen
foreseen.However,therearestillsomeresidualrisksthatallpersonnelworkingwiththeunitmustbeaware
of:

Thehandlingofuidsinrefrigerating,heatingorcoolingcircuitscanbedangerous.Studytheinformation
relevantforeachtypeofuidtoavoiddangers.

Hotorcoldsurfacescancauseinjuries.Beforeintervening,waituntiltemperaturesbecomenormaloruse
protectiveclothing.

Whenworkinginsidetheunit,payattentiontothepossibleergonomicdangersfrominadequatework
positionsorheavylifts.

Unitsectionscanbehigh.Usesecurescaffoldingtoaccesstheupperlevel.

Unitpanelscanbeheavy.Donothandlealone.

Sharpsteeledgesonboxesorcoilscancausecuts.Useprotectivegloves,particularlyduringdisassembly
orassembly .

Whenworkingwithornearfans,beawarethatremainingairowthroughtheunitcancausespontaneous
rotationofthefansandtherebycausingpersonalinjury.

Doorsforoverpressurecompartmentscanbeequippedwithadditionalsafetylocksagainstaccidental
opening.Ensurethatsuchlocksareclosedbeforestartingtheunit.

Thereand/orsmokedetectionisnotasafetyfunctioninrelationtotheENISO13849-1.

Whenworkingwithltersorinadustyarea:T oprotecttheuserfromdust,wearasuitableCEmarkedface
maskselectedandttedinaccordancewiththeapplicablesafetystandards.

Usehearingprotectionaccordingtoapplicablesafetystandardswhenworkinginanoisyenvironmentto
avoidhearingimpairment.

Dampersopenandcloseautomatically .Keephandsclearofthedamperswhentheyaremoving.

TEN-DSC-D1401Safety7

2.4Warningsigns

Thefollowingwarningsignscanbepresentontheunit,towarntheusersofresidualriskswhichcancause
seriousinjuryordeath.Makesurethatallpersonnelworkingwithorneartheunitareawareofthemeaning
ofeachsign.

DesiCool

Figure2.3Riskofelectrical
shock.

Figure2.4Hotairowor
surface.

Figure2.5Unitstarts
automatically.

Figure2.6Pinchhazard.

2.5Emergencystop

Theunitcaninanemergencybestoppedusingthemainpowerswitch.

CA

UTION!

CA CA

UTION! UTION!

Onlyusethemainpowerswitchtostoptheunitinthecaseofanemergency.Thenormalshutdownsequencewill

notbefollowed.Thefansstopandtheheatercanbeveryhot,whichcanresultindamagetotheheaterandother

componentsclosetoit.

8SafetyTEN-DSC-D1401

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3Systemdesignandfunction

3.1Mainfunction

TheDesiCool™airtreatmentsystemisahighlyefcientenergyrecoveryventilationsystem.Ituseslow
costorsurplusheattocreateamorecomfortableindoorclimate.

TheDesiCoolcombinesMuntersadvanceddesiccantdehumidicationtechnologywithevaporative
cooling.

Insummertheunitkeepstherelativehumidityintheroomlowerthanasetsummermaximumvalue,and
alsocontrolsthesupplytemperaturetothesetvalue.

Inwintertheunitkeepsthesupplytemperatureatthesetvaluebyrecoveringheatfromtheexhaustair,while
atthesametimecontrollingtheroomhumiditynottobelowerthanaminimumsetvalue.

3.2Systemdesign

Figure3.1DesiCoolsystemdesignexample*

1Supplydamper6Thermalrecoveryrotor11Bypassdamper

2Supplylter7Heatingandcoolingcoils12Reactivationheater

3Desiccantrotor8Evaporativecooler13Exhaustfan

4Bypassdamper9Exhaustlter14Exhaustdamper

5Processfan10Evaporativecooler

*Individualsystemsarebuilttospecication,andcanbedifferentfromthisexample.

ThereareseveralpossibleoperationmodesfortheDesiCoolsystem.Dependingontheoutside
temperatureandhumidity,andonthesupplysetpoints,thecontrollerwillactivatethecomponentsas
needed.

TEN-DSC-D1401Systemdesignandfunction9

DesiCool

Insummertimetheunitproducescoolanddehumidiedairbyadesiccantcoolingprocess.Theambientair
isdehumidiedinthedesiccantrotor.Thisprocessincreasestheairtemperature.Inthethermalrecovery
rotortheairisindirectlycooledbytheevaporativecoolerintheexhaust.Finally,theairisfurthercooled
directlybytheevaporativecoolerinthesupply.

Thereisaheaterintheexhaustairstreamforreactivationofthedesiccantrotor.Seethemoredetailed
descriptioninsection4.1,Desiccantrotor.

Inwintertimetheunitproduceswarmair.Thethermalrecoveryrotorstartstorotateandrecoversheat
fromtheexhaustairstream.Ifmoreheatrecoveryisrequiredthedesiccantrotoralsostartstorotateand
recoversbothheatandmoisture.Atextremeambientwinterconditionsthehotwatercoilinthesupplyis
alsoinoperation.

Throughtheuseofbypassdampersitispossibletooptimizethewaytheairistreated.

10SystemdesignandfunctionTEN-DSC-D1401

DesiCool

9

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MM

DH

TH

3

4

5

3.3Basicsensorslayout

Figure3.2DesiCoolbasicsensorslayoutexample

1.DifferentialpressureswitchonlterPSW16.DifferentialpressureswitchonlterPSW2

2.InputtemperatureandRHsensorTHS17.ReactivationtemperaturesensorTS11

3.FlowcontroldifferentialpressuresensorDP48.AntifreezethermostatTS9

4.AntifreezethermostatTS109.FlowcontroldifferentialpressuresensorDP3

5.SupplytemperaturesensorTS2

DH.Dehumidicationrotor

TH.Thermalrecoveryrotor

TEN-DSC-D1401Systemdesignandfunction11

DesiCool

3.4Pre-andpost-treatment

Pre-andpost-treatmentoftheprocessaircanbeperformedbythefollowingfunctionalcomponents:

■Inletdamperstoenableisolationoftheunitfromtheairow .Thedampersareinstalledontheoutside

oftheunit.

■Heatingcoil:Thecoilcanbeelectricorusehotwaterorsteamasheatingmedium.Thecoilmustthen

beconnectedtoanexternalheatingmediumsupply.Itispossibletoactivateapumpfromthecontrol
system.

■Coolingcoil:Thecoiluseschilledwater,possiblymixedwithglycol.Thecoilmustbeconnectedtoan

externalmediumsupply.Thecontrolsystemregulatesanactuatortomaintaindewpointandorcooling
setpoint.Itispossibletoactivateapumpand/orachillerfromthecontrolsystem.

■Filtersforvariousairqualityspecications.Filterscanbeequippedwithpressuredropsensorstoenable

"blockedlter"alarm(option).

CA

UTION!

CA CA

UTION! UTION!

Coilsmustbefrostprotectedwhenthereisariskoffrost.Seesection4.3.3,Frostprotection.

12SystemdesignandfunctionTEN-DSC-D1401

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1

2

3

4

4Maincomponentsdescription

NOTE!Somecomponentsareoptional,andindividualsystemspecicationsmaydiffer.

Allcomponentpicturesareexamples,andmaynotcorrespondtoindividualunits.

4.1Desiccantrotor

4.1.1Function

1.Processair

2.Dryair

3.Reactivationair

4.Wetair

Figure4.1Rotorprinciple

Therotoristheadsorptiondehumidifyingcomponentintheunit.Therotorstructureiscomprisedofa
largenumberofsmallairchannels.

Thedesiccantrotorismadeofacompositematerialthatishighlyeffectiveinattractingandretainingwater
vapour.Therotorisdividedintwozones.Theairowtobedehumidied,processair,passesthroughthe
largestzoneoftherotorandthenleavestherotorasdryair.Sincetherotorrotatesslowly,theincomingair
alwaysmeetsadryzoneontherotor,thuscreatingacontinuousdehumidicationprocess.

Theairowthatisusedtodrytherotor,reactivationair,isheated.Thereactivationairpassesthrough
therotorintheoppositedirectiontotheprocessairandleavestherotoraswetair(warm,moistair).This
principleenablesthedehumidiertoworkeffectively ,evenatfreezingtemperatures.

Therotorismonitoredbyarotationsensortoenableanalarmiftherotorstopsunintentionally.

TEN-DSC-D1401Maincomponentsdescription13

DesiCool

4.1.2Rotormaintenance

Therotorsurfacemustbeinspectedregularly.Performpressuredropmeasurementstofollowrotoraging.

Thedesiccantrotorwillnotbereplacedpreventively,capacitymonitoringwillindicatewhenrotor
replacementisnecessary.

4.1.3Rotorseals,drivebeltanddrivemotor

Therotordrivemotor,drivebeltandsealsshouldbereplacedifnecessary,oratthemaximumintervals
accordingtothemaintenanceschedule.

Belttensioncanbeadjustedbyshorteningthebelt.

Rotorsealsmustbecheckedandadjustedonceperyear.

14MaincomponentsdescriptionTEN-DSC-D1401

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4.2Thermalrecoveryrotor

4.2.1Function

Figure4.2Thermalrecoveryrotor

Thethermalrotoris,dependingontheambientconditions,usedeitherforcoolingorforheatingofthe
supplyair.Thisisdonebyexchangingheatbetweenthesupplyairstreampassingthroughthelowerhalfof
therotor,andtheexhaustairstreampassingthroughthetophalfintheoppositedirectionwhiletherotor
rotates.

Thethermalrotorismanufacturedfromaluminiumwithmanysmallchannelsthroughwhichtheairpasses,
makingalargecontactsurfacetotransfertheheat.

Therotorisdrivenbyanelectricmotorandadrivebeltaroundthecircumferenceoftherotor.

4.2.2Rotor

Therotorsurfacemustbeinspectedregularly.

Iftherotorisdirtyitcanbecleanedwithavacuumcleaner,orwithlowpressurecompressedairifnecessary.

4.2.3Rotorseals,drivebeltanddrivemotor

Thedrivebeltmustbecheckedaftertherst100hoursofoperation.

Therotordrivemotor,drivebeltandsealsshouldbereplacedifnecessary,oratthemaximumintervals
accordingtothemaintenanceschedule.

Belttensioncanbeadjustedbyshorteningthebelt.

Theclearancebetweentherotorsurfaceandthesealsmustbecheckedduringinspection.Adjustthesealsif
necessary.

TEN-DSC-D1401Maincomponentsdescription15

DesiCool

A

B

4.3Watercoils

4.3.1Coolingcoils

Coolingcanbesuppliedbyoptionalcoldwatercoilsinstalledinthepre-andorpost-treatmentsections.

Thecoiluseschilledwater,possiblymixedwithglycol,ascoolingmedium.Thecoilmustbeconnected
toanexternalmediumsupply.

CA

UTION!

CA CA

UTION! UTION!

Hotandcoldwatersupplylinesmustonlybedesignedandexecutedbyqualiedpersonneltakingintoaccount

therespectiverelevantlocalregulations.

Whenthereisariskoffrost,thewatercoilsmustbefrostprotected.Seesection4.3.3,Frostprotection.

4.3.2Heatingcoils

Heatingcanbesuppliedbyoptionalhotwatercoilsinstalledinthepre-andorpost-treatmentsection.

Thecoiluseshotwaterorsteamasheatingmedium.Thecoilmustbeconnectedtoanexternalheating
mediumsupply .

CA

UTION!

CA CA

UTION! UTION!

Hotandcoldwatersupplylinesmustonlybedesignedandexecutedbyqualiedpersonneltakingintoaccount

therespectiverelevantlocalregulations.

Whenthereisariskoffrost,thewatercoilsmustbefrostprotected.Seesection4.3.3,Frostprotection.

4.3.3Frostprotection

Ifthewaterinacoilfreezesthiscouldcauseseriousdamage.Afrozencoilmustalmostalwaysbereplaced.
Theguaranteeisnolongervalidevenifthecracksarenotvisible.

Ifthereisariskoffrost,thecoolingmediummustbeenrichedwithglycolorananti-freezeheatercomplete
withanti-freezethermostatmustbeinstalled.

4.3.4Dropletseparator

Figure4.3CoolingcoilA AAanddropletseparatorB B

B

Acoolingsectioncanbeequippedwithadropletseparatortoremovedropletcarry-overfromthecooling
coil.

16MaincomponentsdescriptionTEN-DSC-D1401

DesiCool

Thedropletseparatorisbuiltfromapatentedthree-plane-utedpadthatissetatanangletotheowofair.
Theseparatorabsorbsthewaterdropletsandtransportsthemdownthroughthematerialtothedrainage
section.

4.3.5Cleaning

W

ARNING!

W W

ARNING! ARNING!

Coilnshavesharpedges.Alwayswearprotectivegloveswhenworkingwithcoils.

1.Thecoilsshouldbecheckedatleastonceayear,andcleanedifrequired.

2.Someofthedustwhichpassesthroughthelterscomestorestonthecoilcells.Thislayerofdust
affectstheairowandreducestherateofexchangeleadingtodecreasedunitefciency.

3.Thecoilsshouldthereforebekeptclean.Cleaningcanbedonebyusingavacuumcleaner,lowpressure
compressedairorlowpressurewaterandasoftbrush.Donotforgettocleantheunitinternallyafterthe
coilcleaning.NeveruseHPcleaners,thiswilldamagethecoilns.

4.Furthermore,inthecaseofcoolingcoils,cleanthedriptrayandsiphonforthecondensationwateronce
peryear.Notethatsiphonsneedtoberelledwithwaterafterthewinterseason.

4.3.6Stoppingwaterowtothecoils

Precautionstotakeincaseoffrostrisk:

-whereitisenvisagedtostoporconsiderablyreducetheowofhotwater,allthefreshairintakesmust
beclosedandtheventilationstopped.

-thereferencepointoftheantifreezethermostatmustnotbesettoolow .

-ifforwhateverreasonabuildingisnotheatedinwinter,thecoilsaswellasthepipingmustbeemptied.

Hotwatercoils

Makesurethatthetemperatureofthehotwaterisnottoolow ,andthatthecirculationofthewateris
maintained.Ensurethat:

■thevalvesareopen.

■thepipingispurgedfromremaininggases.

■thehotwatercirculationpumpoperatesevenatnight.

Coolingcoils

Coolingcoilsmustbepurgedifthepassingairtemperatureislowerthanthefreezingpointofthecoolant.
Wherethecoilsaresuppliedwithwaterwhichdoesnotcontainglycol,andnopreheatercoilisinstalled,itis
thereforenecessarytoemptythecoilsassoonasthepassingairtemperaturereaches0°C.

TEN-DSC-D1401Maincomponentsdescription17

DesiCool

4.4Evaporativecoolers/humidiers

Evaporativecoolers/humidiersareplacedbothinthesupplyandexhaustairstreams.

Theycanhaveeitheradirectwatersupply,orarecirculatedsystem.

TheheartoftheFA6cooler/humidierisacassettemadefrominorganicevaporativemedia–GLASdek®.
Waterissuppliedtothetopoftheevaporativemediaviaadistributionheader.Thewaterowsdown
thecorrugatedsurfaceofthemedia.Asthewarmanddryairpassesthroughthemediaitevaporatesa
proportionofthewaterandthusproducescool,humidiedair.Therestofthewaterassistsinwashingthe
media,andisdrainedbacktothetank.Inthecaseofarecirculatedsystem,theremustbeableed-offandan
automaticdrainageinordertoavoidcontaminationofthewater.

Theenergythatisneededfortheevaporationistakenfromtheairitself.Theairthatleavesthehumidieris
thereforehumidiedandcooledsimultaneouslywithoutanyexternalenergysupplyfortheevaporation.
Thisisinessencetheadiabaticcoolingprocess.Itisveryefcientandtheconsumptionofenergyisverylow.

Periodicmaintenanceofthecoolersisrecommendedonceayear,followingtheoperatingseason.

Figure4.4Openthesafetycatchonthedistributionheaderbyturningaquarterturn

1.Cleanthedistributionheader.

2.Cleanthepumplter.

3.Cleanthereservoir.

4.Checkthefunctionofthelevelswitch.

5.Checkthefunctionofthebleed-offvalve.

18MaincomponentsdescriptionTEN-DSC-D1401

DesiCool

6.Checkthatthehumidiercassetteisevenlywettedandthatnocalciumstreakscanbefoundonthe
inletside.

7.Checkthatthehosesandcouplingsdonotleak.

8.Checkthedischargepipeandwatertrap.Cleanifnecessary.

NOTE!Formoreinformationonservicingofevaporativecoolers/humidiers,seetheseparateMuntersFA6

manual.

TEN-DSC-D1401Maincomponentsdescription19

4.5Fans

4.5.1Fantypes

Figure4.5PlugfanFigure4.6Scrollfan

Theunitcanbeequippedwithplugfansorscrollfans.Thefansaredrivenbyelectricmotorsthatcanbe
controlledbyfrequencyconverters,whichenableadjustmentoftheairpressureandairowfromthe
operatorpanel.

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4.5.2Maintenance

1.Beforestartinguptheunit,ensurethattherearenolooseobjectsinsidetheunit.

2.Cleantheinsideoftheunitusingavacuumcleaner.

3.Ifthefanimpellerscomeintocontactwithcontaminatedairordust,itisimperativethattheyarecleaned
regularlytoavoidvibrationscausedbyunbalance.

4.Donotuseanyaggressivecleaningagents,cleanfanhousingwithwarmwaterifrequired.

5.Neveruseahighpressurecleanerorwatersprayforcleaning.

4.6Filters

4.6.1Filtertypes

Figure4.7BaglterFigure4.8Panellters

20MaincomponentsdescriptionTEN-DSC-D1401

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4.6.2Filtermaintenance

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Thereisarehazard,orriskofunitmalfunction,ifltersaremaintainedinsufcientlyorincorrectly.

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Whenreplacingtheltersorworkinginadustyarea:Toprotecttheuserfromdust,wearasuitableCEmarkedface

maskselectedandttedinaccordancewiththeapplicablesafetystandards.

Theltersrequireregularreplacement.Thefrequencydependsontheamountofdustintheairandthe
operatingconditions.Alterguardwillindicatewhenreplacementisrequired(option).

Blockedlterscanreducetheairowintheunit.Replacingtheltersisthereforeofprimeimportancefor
thecorrectoperationoftheinstallation.Incorrectairowwillreducethecapacityandtheenergyefciency
oftheunit.Replacethelterswhen:

■Finalpressuredropisreached.

■Thereisalteralarm.

■Thelterisdamagedandairispassingwithoutltration.

■Paperframeltershavebecomewet.

4.6.3Panellters

■Checkthedegreeofdirtaccumulationbymeasuringthedifferentialpressureorbyinspectingthelters

visually.

■Replaceasrequired.

■Beforereplacingthelter,checkthattheframesaresealedandifnecessaryreplacetheseals.

■Cleantheltersection,checkthatthereisnodirtbeyondthelter.

4.6.4Baglters

■Checkthedegreeofdirtaccumulationbymeasuringthedifferentialpressureorbyinspectingthelters

visually.Baglterscannotbecleanedandarenotreusable.

■Fitanewbaglterandcheckitstightness.Bagsmustbeverticallymounted.

TEN-DSC-D1401Maincomponentsdescription21

4.7Dampers

Figure4.9Inletdamper

Dampersareusedtoopenandclosetheinletandtheoutletoftheunit,aswellasoptionallyforcontrolling
bypassandrecirculation.

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Keephandsclearofthedamperswhentheyaremoving.Riskofpersonalinjury.

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Openingswithdampersshouldalwaysbecoveredbyducts.

Anyunductedairdampersshouldbettedwithaprotectivegrille(notincludedinMuntersdelivery)toprevent

injuryfromthedamperblademovement.

Dampermaintenance

Cleanandchecktheoperationofthedampers,thegearingandbearings.

Thebladescanbecleanedwithwaterorcompressedair.

Checkthepositioninrespectoftheindications“OPEN”and“CLOSED”.

Ifthedampersdonotmovefreely,lubricatethegearingandbearingswithsiliconeoil.

22MaincomponentsdescriptionTEN-DSC-D1401

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4.8Flexibleconnections

Figure4.10Flexibleductconnection

Flexibleductconnectionsareusedinordertoavoidanytransmissionofstructurebornenoiseand
vibrations.

Thelengthinoperationisnormally120mm(fullyextended200mm).

Theexibleconnectionsarerelativelyfragileandcutsmustbeavoided.

Theexibleconnectionsarexedduringtransport.

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Asthepressureinsidecanbehigh,theexibleconnectionsmustnotbedismountedduringoperation.

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UTION!

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UTION! UTION!

Theexibleconnectionscanneverbeusedasductsupport.

TEN-DSC-D1401Maincomponentsdescription23

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5Commissioning

CA

UTION!

CA CA

UTION! UTION!

Commissioningandinitialstart-upoftheunitshouldbecarriedoutbyMunterspersonnelonly.

5.1Checksbeforestartingup

-Checkthatthefanmotortransportationblocksareremoved.

-Itisalwayspossiblethatduringtransportcertainelementsworklooseduetovibrations.Weadviseyou
tocheckthoroughlythatallscrewsandnuts,andinparticularrotatingpartssuchasturbines,pulleys,
bearings,etc.,aretight.

-Turnthefanbyhandtomakesurethatitcanrotatefreely .Checkthatnoforeignbodieshavefound
theirwayintothefan.

-Checkthatthebearingsinthemotorandfanareproperlylubricated.

-Checkthattherearenoforeignbodiesintheunit(orintheducts)andthattheairintakesandoutlets
arenotblocked.

-Checkmanuallythatthedampersarecorrectlypositionedandareabletooperatecorrectly.

-Checkthetensionandalignmentofthebeltsandreadjustifnecessary.

-Checkallelectricalconnections.

-Checkthedirectionofrotationofthefansandcompressors.Correctdirectioncanbecheckedonafan
wheelwithanarrow,orbymonitoringthechangeinhighandlowpressurewhenacompressorstarts.

CA

UTION!

CA CA

UTION! UTION!

Rotationdirectionischeckedinthefactorymeaningthatifonemotorisrotatinginthewrongdirection,allmotors

areactuallyrotatinginthewrongdirection.Phasesmustthenbeinvertedonthemainterminalblock.Itisstill

importanttocheckallmotors.

-Thecoolingcoilsectionsaresuppliedwithdrains.Checkthattheyarecorrectlyconnectedtoallow
efcientdrainage.

-Fittheairlters.Ensurethattheltersarermlyattachedtotheframe.

NOTE!Beforeputtingtheunitintooperation,thebagltersmustbeprotectedtoavoidtheexcessive

accumulationofdirtcausedbytherstuse(dustandconstructionresidueintheunit).

-Adjustthedifferentialpressureswitches.

5.2Inspectionofevaporativecoolers

1.Removeanyloosematerialinthebottomofthewatertank.

2.Closethebottomvalveandllthetankwithwater.

3.Checkthattheconnectionsaretight.

4.Checkthefunctionofeachsolenoidvalve.

24CommissioningTEN-DSC-D1401

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Figure5.1Checkingthedirectionofrotation

Theitemsbelowconcernrecirculatedsystems:

5.Startthepumpandcheckthedirectionofrotationbytouchingtherubberringwithascrewdriver.
Viewedfromabove,themotorshouldrotateclockwise.Ifitrotatesinthewrongdirection,switchtwoof
thephases.

6.Adjustthebleed-offvalvetocorrespondtothecalciumlevelinthewater.

NOTE!Thelevelofthewaterincirculatingwatercoolersisveryimportant.Ifthelevelisconsistentlytoolow,

coolingperformancecanbedrasticallyimpaired.

5.3Startingup

Aftercarryingoutallthecheckslistedabove,theunitcanbeputintooperationandthefollowingpoints
checked:

a)Measurethetensionofthenetworkandtheintensityabsorbedbyeachmotorandcomparethemtothe
guresonthemotoridenticationplate.

NOTE!Thepowerofthemotorsinourunitsiscalculatedwithapredeterminedsafetycoefcient.Comparethe

theoreticalintensitywiththeintensityabsorbedbythemotoroftheunitwhileitisoperating.

b)Thesystem’sexternalstaticpressuremustcomplywiththeorderspecications.Non-conformancewill
leadtovariationsintheairow .

Theowratevariesaccordingtotherotationspeedofthefan,thepressureaccordingtothesquareofthe
rotationspeedandtheabsorbedpoweraccordingtothecubeofthisspeed.Ifthesystempressureislower
thanthevaluesestimated,theowratewillincreasetogetherwiththeabsorbedpower,whichcreatesarisk
ofoverloadingthemotor.Thisisespeciallyimportantforforwardcurvedfans.Forbackwardcurvedfans
theabsorbedpowercurvefollowsalmostexactlytherotationspeedcurve.

NOTE!Compliancewithallthesepointsisaconditionoftheguarantee.

TEN-DSC-D1401Commissioning25

6Serviceandmaintenance

1

0

6.1Safety

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Figure6.1Electricalhazard

Figure6.2Secureagainstreconnection

Electricalhazard

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Installation,adjustments,maintenanceandrepairsmustonlybecarriedoutbyqualiedpersonnelwhoare

awareoftherisksinvolvedwhenworkingwithequipmentoperatingwithhighelectricalvoltageandhighmachine

temperatures.

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Donotopendistributionboxesorotherelectricalconnectionboxes.Theunitisconnectedtohighvoltagewhich

cancauseseriousinjuryordeath.

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Beforedoinganyserviceormaintenanceworkontheunitmakesurethatallelectricalequipmentisdisconnected

fromthepowersupply,andsecuredagainstreconnection.

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Anyexternalelectricalequipment,forexampleaportablelamp,mustbeconnectedtoanearthfaultbreaker.

26ServiceandmaintenanceTEN-DSC-D1401

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Physicalhazard

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Removehandwheelsfromwaterandsteamsupplyvalves,orotherwiselockoffreopeningonacomponentthat

isisolatedtopreventinadvertentreopening.Alternatively,placeanoticeonthevalveindicatingthatitisclosed

forareason.

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Rotatinghazard.Theunitcontainsrotatingfansandothermovingparts.

Topreventpersonalinjury ,theunitmustberunwithallpaneldoorsclosedandallremovablepanelsandprotective

gridsproperlyinplace.Neveropenthedoorsorpanelsbeforeallfansandothermovingpartshavecometoa

completestop,andthemainpowerisswitchedoff.

Fansandothermovingpartscanstartautomaticallyandwithoutwarning.

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Cleaningagents,coolingmedia,oilandgreasearesubstancesthataredangeroustopersonalhealthandtothe

environment.Theymustnotbeallowedtodrainawayintothesoilorthepublicsewersystem.Thedisposalofsuch

substancesmustbeeffectedinaccordancewithlocalandnationallawandregulations.

NOTE!Aportablelampisrequiredwhencarryingoutserviceworkinsidetheunit.

Propertyhazard

CA

UTION!

CA CA

UTION! UTION!

Serviceandmaintenanceworkshouldonlybecarriedoutbyqualiedandtrainedpersonnel.Operatingfaultscan

occuriftheunitismaintainedinsufcientlyorincorrectly.

CA

UTION!

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UTION! UTION!

Protectthebottompanelsifworkmustbecarriedoutinsidetheunit.

TEN-DSC-D1401Serviceandmaintenance27

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6.2General

Mostairtreatmentunitsrequirethesametypeofmaintenance.Thefollowingparagraphsexplainthe
necessarybasicrules.

Serviceandmaintenanceintervallengthsareprimarilydeterminedbyoperatingconditionsandthe
environmentinwhichtheunitisinstalled.Forexample,iftheprocessaircontainsalotofdust,preventative
maintenanceshouldbecarriedoutatshorterintervals.Thesamealsoappliesiftheunitworksintensively .

Theservicelevelsforastandardserviceandmaintenanceprogrammearedescribedinsection

6.3,Serviceoptions.

Thecontrolsystemisequippedwithaserviceindicator.Itisprogrammedatcommissioningtogiveaservice
alarmafteranestimatednumberofoperatinghours,oronthepresetdateforthenextservice.

6.3Serviceoptions

Inadditiontocommissioningoftheunittherearefourserviceoptions(A-D)asstandard.

S.Commissioning/start-up.

A.Inspectionandifnecessarychangeoflter.Generalfunctioncheck.

B.InadditiontoA,safetycheckandcapacity ,temperatureandhumidityregulationmeasurements.

C.InadditiontoB,preventivereplacementofsomecomponentsafter3yearsofoperation.

D.InadditiontoC,preventivereplacementofsomecomponentsafter6yearsofoperation.

NOTE!AlwayscontactMuntersforserviceorrepair.Operatingfaultscanoccuriftheunitismaintained

insufcientlyorincorrectly.

NOTE!Commissioning/Start-upinspection"S"byMuntersismandatorytovalidatethefullwarranty.

Muntersserviceengineershavespecialequipmentandrapidsparepartsaccesstohandleserviceonall

Muntersproducts.Alltestequipmentusedbyourpersonneltoensurepropersystembalancingiscertied
foraccuracy .

MuntersServicecanofferaserviceplanadaptedtosuittheconditionsofaspecicinstallation.Seecontact
addressesonthebackpageofthismanual.

6.4Extendedwarranty

MuntersoffersanextendedwarrantytothestandardtermswhentheCustomersignsaservicecontractwith
Munters.Detailsareavailableonrequest.

28ServiceandmaintenanceTEN-DSC-D1401

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6.5Serviceandmaintenanceschedule

ServicelevelStartABABAC

Operatingtimeinhours04000800012000160002000024000 Servicework

Calendartimeinmonths061218243036

Filterinspection,replacelterifnecessary,functioncheckXXXXXXX

PreventiveinspectionincludingsafetycheckXXXX

Capacitycheck,rotorinspectionXXXX

ReplacementofHTCOThermostatsX

Inspectionandleakagecheckofsystemboxesanddoors,adjusthingesif

necessary

Inspectionofheating/coolingcoilsX

ReplacementofdrivebeltandbeltfastenerX

Replacementofrotordrivemotor

Inspectionoffans(impellers,motors,bearings)

Examiningelectrical-andcontrolsystems,functioncheckXXXX

Calibrationofmoisturecontrolequipment,sensorsandvalvesXXXX

CalibrationoftemperaturecontrolequipmentandsensorsXXXX

Replacementofrotorsealsifnecessary

SpecicmaintenanceongasburnerunitXXXX

XX

Table6.1Serviceandmaintenanceschedule(0-24000hours)

NOTE!Serviceworkshouldbeperformedatindicatedoperatinghoursorcalendartime,whicheverisreached

rst.

NOTE!Thedesiccantrotorwillnotbereplacedpreventively,capacitymonitoringwillindicaterotorreplacement.

TEN-DSC-D1401Serviceandmaintenance29

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ServicelevelABABAD

Operatingtimeinhours280003200036000400004400048000 Servicework

Calendartimeinmonths424854606672

Filterinspection,replacelterifnecessary,functioncheckXXXXXX

PreventiveinspectionincludingsafetycheckXXX

Capacitycheck,rotorinspectionXXX

ReplacementofHTCOThermostatsX

Inspectionandleakagecheckofsystemboxesanddoors,adjusthinges

ifnecessary

Inspectionofheating/coolingcoilsX

ReplacementofdrivebeltandbeltfastenerX

ReplacementofrotordrivemotorX

Inspectionoffans(impellers,motors,bearings)X

Examiningelectrical-andcontrolsystems,functioncheckXXX

Calibrationofmoisturecontrolequipment,sensorsandvalvesXXX

CalibrationoftemperaturecontrolequipmentandsensorsXXX

ReplacementofrotorsealsifnecessaryX

SpecicmaintenanceongasburnerunitXXX

Table6.2Serviceandmaintenanceschedule(28000-48000hours)

NOTE!MaintenanceschedulerestartsagainaftermaintenancetypeD.

X

30ServiceandmaintenanceTEN-DSC-D1401

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7Scrapping

Theunitmustbescrappedinaccordancewithapplicablelegalrequirementsandregulations.Contactyour
localauthorities.

Therotormaterialisnotcombustible,andshouldbedepositedlikeglassbrematerials.

Iftherotorhasbeenexposedtochemicalsthataredangeroustotheenvironmenttheriskmustbeassessed.
Thechemicalscanaccumulateintherotormaterial.Takethenecessaryprecautionstocomplywith
applicablelegalrequirementsandregulations.

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Iftherotoristobecutinpieces,wearasuitableCEmarkedfacemaskselectedandttedinaccordancewiththe

applicablesafetystandardstoprotectfromthedust.

TEN-DSC-D1401Scrapping31

8Supplements

Additionalinformationisavailableinsupplementsasapplicable:

■Productspecicationdatasheet

■Controlsystem

■Installation

■Humidication

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32SupplementsTEN-DSC-D1401

DesiCool

9ContactMunters

AUSTRIA

BELGIUM

DENMARK

FINLAND

FRANCE

GERMANY

ITAL Y

NETHERLANDS

POLAND

SPAIN

SWEDEN

SWITZERLAND

UNITEDKINGDOM

MuntersGmbH
AirTreatment
ZweigniederlassungWien

MuntersBelgiumnv
AirTreatment

MuntersA/S
AirTreatment

MuntersFinlandOy
Kuivaajamyynti

MuntersFranceSAS
AirTreatment

MuntersGmbH
AirTreatment-Zentrale

MuntersItalyS.p.A
AirTreatment

MuntersV ochtbeheersingEnergieweg69

MuntersSp.zo.o.
OddzialwPolsce
AirTreatment

MuntersSpainSA
AirTreatment

MuntersEuropeAB
AirTreatment

MuntersGmbH
AirTreatment
ZweigniederlassungRümlang

MuntersLtd
AirTreatment

Eduard-Kittenberger-Gasse56,
Obj.6
A-1235Wien

Blarenberglaan21c
B-2800Mechelen

Ryttermarken4
DK-3520Farum

Hakamäenkuja3
FI-01510V ANTAA

106,BoulevardHéloise
F-95815ArgenteuilCedex

Hans-Duncker-Str.8
D-21035Hamburg

StradaPiani2
I-18027Chiusavecchia
IM

NL-2404HEAlphena/dRijn

ul.Swietojanska55/11
81-391Gdynia

EuropaEpresarial.EdicioLondres.
C/PlayadeLiencres2.
28230LasMatas.Madrid

POBox1150
S-16426Kista

Glattalstr.501
CH-8153Rümlang

PathnderPlace10RamsayCourt
HinchingbrookeBusinessPark
HuntingdonPE296FYCambs

Tel:[phone]
[e-mail]
www.munters.at

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[e-mail]
www.muntersbelgium.be

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[e-mail]
www.munters.dk

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laitemyynti@munters.
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[e-mail]
www.munters.fr

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www.munters.de

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www.munters.it

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www.munters.nl

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[e-mail]
www.munters.com.pl

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[e-mail]
www.munters.es

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[e-mail]
www.munters.se

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[e-mail]
www.munters.ch

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[e-mail]
www.munters.co.uk

AUSTRALIA

BRAZIL

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CHINA

INDIA

JAPAN

KOREA

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TEN-DSC-D1401ContactMunters33

www.munters.com