Munters MX2P Owner's manual

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Originalinstructions
Operatingmanual
MX²Plus
Dehumidicationsystem
TEN-MX2P-B1505©MuntersEuropeAB2015
Tableofcontents
Tableofcontents...........................iii
1Introduction.................................1
1.1Denition...............................
1
1.2Aboutthismanual.....................
1
1.3Warnings...............................
2
1.4Warranty...............................
2
1.5Inspectionofdelivery..................
2
1.6Marking................................
3
1.7Technicalspecications..............
3
1.8Unintendeduse........................
3
2Safety.........................................4
2.1Intendeduse...........................
4
2.2Safeinstallation,operationand
maintenance...........................
4
2.3Residualrisks..........................
6
2.4Warningsigns.........................
7
2.5Quickstop..............................
7
3Systemdesignandfunction..............8
3.1Mainfunction..........................
8
3.2Systemdesign.........................
8
3.3Pre-andpost-treatment..............
9
4Maincomponentsdescription............10
4.1Dehumidier...........................
10
4.1.1Principleofoperation..........
10
4.1.2Dehumidiercomponents.....
12
4.1.3Pressuretestpoints...........
13
4.1.4Hightemperaturecut-out......
14
4.1.5Bypassdamper................
15
4.1.6EnergyRecoveryPurgeand
EnergyEfciencyPurge.......
16
4.2Watercoils.............................
17
4.2.1Productdescription............
17
4.2.2Coilmaintenance..............
17
4.3Directexpansionrefrigeration........
18
4.4Electricheater.........................
18
4.5Humidier..............................
19
4.6Supplyfan..............................
19
4.7Filters...................................
20
4.7.1Filtertypes......................
20
4.7.2Filtermaintenance.............
20
4.8Dampers...............................
21
5Operation....................................22
5.1Mainpowerswitch.....................
22
5.2Controlsystem........................
22
5.3HMIconnection........................
23
5.4Operatorpanel........................
23
5.5Starttheunit...........................
24
5.6Stoptheunit............................
24
5.7Quickstop..............................
24
6Serviceandmaintenance.................25
6.1Safety..................................
25
6.2General................................
26
6.3Serviceoptions........................
26
6.4Extendedwarranty....................
26
6.5Cleaning...............................
26
6.6Maintenanceschedule................
27
6.7Preventivereplacements.............
28
7Scrappinganddisposal...................29
8ContactMunters............................31
TEN-MX2P-B1505Tableofcontentsiii
MX²PlusDehumidicationsystem
1Introduction
1.1Denition
TheDehumidicationsystemdescribedinthismanualishereafterreferredtoasthe“unit”.
1.2Aboutthismanual
Thisoperatingmanualcontainsimportantsafetyinformation,aproductdescriptionandmaintenance
instructionsforthedeliveredunit.
Readallrelevantpartsofthismanualbeforeoperatingorperforminganyworkontheunit.Observanceof
thisinformationwillhelpyoutoavoiddanger,tominimiserepaircostanddowntime,andtoincreasethe
reliabilityandtheservicelifeoftheunit.
Thismanualshouldbestoredinapermanentlocationclosetotheunit.
Thismanualdoesnotdescribeinfullallthemaintenanceworkrequiredtoguaranteethelongevityand
reliabilityofthistypeofequipment.AlwayscontactMuntersforserviceandrepairs,toensuresafeandlong
lastingoperationoftheunit.
Installationinstructionscanbefoundinthecorrespondingsupplement.
Thecontentsofthismanualcanbechangedwithoutpriornotice.
NOTE!Thismanualcontainsinformationwhichisprotectedbycopyrightlaws.Itisnotallowedtoreproduceor
transmitanypartofthismanualwithoutwrittenconsentfromMunters.
Sendanycommentsregardingthismanualto:
MuntersEuropeAB
TechnicalDocumentation
P.O.Box1150
SE-16426KISTASweden
e-mail:t-doc@munters.se
1IntroductionTEN-MX2P-B1505
MX²PlusDehumidicationsystem
1.3Warnings
Informationaboutdangersareinthismanualindicatedbythecommonhazardsymbol:
W W
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ARNING! ARNING!
ARNING!
Indicatesapossiblehazardthatcanresultinseverepersonalinjuryordeath.
CA CA
CA
UTION! UTION!
UTION!
Indicatesapossiblehazardthatcanresultindamagetotheunitorotherproperty,orcauseenvironmental
damage.
NOTE!Highlightssupplementaryinformationforoptimaluseoftheunit.
1.4Warranty
ThewarrantyisbasedonthetermsofsaleanddeliveryofMunters.Thewarrantyisnotvalidifrepairsor
modicationsarecarriedoutwithoutthewrittenagreementofMunters,oriftheunitdoesnotoperateunder
theconditionsagreedwithMunters.Damagesresultingfromnegligence,poormaintenanceorfailureto
complywiththerecommendationswillnotbecoveredbythewarranty.
Itisaconditionofthewarrantythattheunitforthefullwarrantyperiodisservicedandmaintainedbya
qualiedMuntersengineerorMuntersapprovedengineer.Accesstospecicandcalibratedtestequipment
isnecessary.Theserviceandmaintenancemustbedocumentedforthewarrantytobevalid.
Thewarrantyislimitedtoafreeexchangeofpartsorcomponentswhichhavefailedasaresultofdefects
inmaterialsorworkmanship.
Commissioning/Start-upinspection"S"byMuntersismandatorytovalidatethefullwarranty.
AlwayscontactMuntersforserviceorrepair.Operatingfaultscanoccuriftheunitismaintained
insufcientlyorincorrectly.
1.5Inspectionofdelivery
Inspectthedeliveryandcomparewiththedeliverynote,orderconrmationorotherdelivery
documentation.Makesurethateverythingisincludedandnothingisdamaged.
ContactMuntersimmediatelyifthedeliveryisnotcompleteordamagedinordertoavoidinstallation
delays.
Removeallpackagingmaterialfromtheunit,andmakesurethatnodamagehasoccurredduring
transportation.
AnyvisibledamagemustbereportedinwritingtoMunterswithin3daysandpriortoinstallationof
theunit.
Disposeofthepackagingmaterialaccordingtolocalregulations.
TEN-MX2P-B1505Introduction2
MX²PlusDehumidicationsystem
1.6Marking
Type
Fabr. No. 1501 190XXX XXXXX
3 ~ 400V 50 Hz
4,1 kW
Munters Europe AB
Box 1150
SE-164 26 Kista, Sweden
M
IP33
Fabr . year
36 kW
Made in Sweden
MX² Plus
2015
Max
41 kW
Figure1.1ExampleofidenticationplatecontentFigure1.2Identicationplateposition
1.7Technicalspecications
Thetechnicalspecicationsfortheunitcanbefoundinthecorrespondingsectionofthemanual.
1.8Unintendeduse
Theunitisnotintendedforoutdoorinstallation.
Theunitisnotintendedforuseinclassiedareaswhereexplosionsafetycompliantequipmentis
required.
Theunitmustnotbeinstallednearanyheatgeneratingdevicesthatcancausedamagetotheequipment.
Theunitisnotintendedfortreatingairpollutedwithsolvents,dustorotheraggressive,corrosiveor
abrasiveparticles.
3IntroductionTEN-MX2P-B1505
MX²PlusDehumidicationsystem
2Safety
2.1Intendeduse
TheunitdeliveredbyMuntersmustonlybeusedforthetreatmentofair.Thisincludesltering,heating,
cooling,humidifying,dehumidifyingandtransportingair.Muntersexplicitlyrulesoutanyotheruse.
Theunitisdesignedtomeetthesafetyrequirements,directivesandstandardslistedintheEUDeclarationof
Conformity.
NomodicationoftheunitisallowedwithoutpriorapprovalbyMunters.Attachmentorinstallationof
additionaldevicesisonlyallowedafterwrittenagreementbyMunters.
Theconditionsofoperationspeciedinthetechnicalspecicationsmustbeobservedabsolutely.
Anyotheruseoftheequipmentcancausepersonalinjuryanddamagetotheunitandotherproperty.
2.2Safeinstallation,operationandmaintenance
Greatefforthasbeenplacedonthedesignandmanufactureoftheunit,tocomplywithapplicablesafety
aspectsforthistypeofequipment.
Theinformationinthismanualincludessuggestionsforbestworkingpracticeandshallinnowaytake
precedenceoverindividualresponsibilitiesorlocalregulations.
Duringoperationandotherworkwithamachineitisalwaystheresponsibilityoftheindividualtoconsider:
Thesafetyofallpersonsconcerned.
Thesafetyoftheunitandotherproperty.
Theprotectionoftheenvironment.
Alwayscarryoutriskassessmentsbeforedoinganyworkontheunit.
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-Theunitmustnotbesplashedwithorimmersedinwater.
-Theunitmustneverbeconnectedtoavoltageorfrequencyotherthanthatforwhichitwasdesigned.Refertothe
identicationplate.Linevoltagethatistoohighcancauseanelectricalshockhazardanddamagetotheunit.
-Donotinsertngersoranyobjectsintotheairvents.
-Allelectricalinstallationsmustbecarriedoutbyaqualiedelectricianandinaccordancewithlocalregulations.
-Thedehumidiercanrestartautomaticallyafterapowercut.Alwayssetandlockthemainpowerswitchinthe
OFFpositionbeforecarryingoutanyservicework.
-Useonlyapprovedliftingequipmenttopreventpersonalinjuryanddamagetotheequipment.
-AlwayscontactMuntersforserviceorrepair.
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Installation,adjustments,maintenanceandrepairsmustonlybecarriedoutbyqualiedpersonnelwhoare
awareoftherisksinvolvedwhenworkingwithequipmentoperatingwithhighelectricalvoltageandhighmachine
temperatures.
TEN-MX2P-B1505Safety4
MX²PlusDehumidicationsystem
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Commissioningandinitialstart-upoftheunitmustbecarriedoutbyauthorizedpersonnelonly.
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Theunitcontainsrotatingfansandothermovingparts.
Keephandsawayfromfanbladesatalltimeswhileunitison.DONOTserviceunituntilthefanhascompletely
stopped.
AlwayssetandlockthemainpowerswitchintheOFFpositionbeforecarryingoutanyservicework.
Topreventpersonalinjury,theunitmustberunwithallpaneldoorsclosedandallremovablepanelsandprotective
gridsproperlyinplace.
Fansandothermovingpartscanstartautomaticallyandwithoutwarning.
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Cleaningagents,coolingmedia,oilandgreasearesubstancesthataredangeroustopersonalhealthandtothe
environment.Theymustnotbeallowedtodrainawayintothesoilorthepublicsanitarysystem.Thedisposalof
suchsubstancesmustbeeffectedinaccordancewithlocalandnationallawandregulations.
CA CA
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UTION! UTION!
UTION!
Serviceandmaintenanceworkshouldonlybecarriedoutbyqualiedandtrainedpersonnel.Operatingfaultscan
occuriftheunitismaintainedinsufcientlyorincorrectly.
5SafetyTEN-MX2P-B1505
MX²PlusDehumidicationsystem
2.3Residualrisks
Inordertoavoidthepossibledangersinoperatingormaintainingtheunit,necessaryprotectionshavebeen
foreseen.However,therearestillsomeresidualrisksthatallpersonnelworkingwiththeunitmustbeaware
of:
Thehandlingofuidsinrefrigerating,heatingorcoolingcircuitscanbedangerous.Pleasestudythe
informationrelevantforeachtypeofuidtoavoiddangers.
Hotorcoldsurfacescancauseinjuries.Beforeintervening,waituntiltemperaturesbecomenormaloruse
protectiveclothing.
Sharpsteeledgesonboxesorcoilscancausecuts.Useprotectivegloves,particularlyduringdisassembly
orassembly.
Whenworkingwithornearfans,beawarethatremainingairowthroughtheunitcancausespontaneous
rotationofthefansandtherebycausingpersonalinjury.
Doorsforoverpressurecompartmentscanbeequippedwithadditionalsafetylocksagainstaccidental
opening.Makesurethatsuchlocksareclosedbeforestartingtheunit.
Whenworkingwithltersorinadustyarea:Toprotecttheuserfromdust,wearasuitableCEmarkedface
maskselectedandttedinaccordancewiththeapplicablesafetystandards.
Usehearingprotectionaccordingtoapplicablesafetystandardswhenworkinginanoisyenvironmentto
avoidhearingimpairment.
Dampersopenandcloseautomatically.Keephandsclearofthedamperswhentheyaremoving.
TEN-MX2P-B1505Safety6
MX²PlusDehumidicationsystem
2.4Warningsigns
Thefollowingwarningsignscanbepresentontheunit,towarntheusersofresidualriskswhichcancause
seriousinjuryordeath.Makesurethatallpersonnelworkingwithorneartheunitareawareofthemeaning
ofeachsign.
Figure2.1Riskofpersonal
injuryduetoelectricshock.
Figure2.2Hotairowor
surface.
Figure2.3Unitstarts
automatically.
Figure2.4Pinchhazard.
2.5Quickstop
Theunitcaninanemergencybestoppedusingthemainpowerswitch,seesection5.1,Mainpowerswitch.
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UTION! UTION!
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Onlyusethemainpowerswitchtostoptheunitinthecaseofanemergency.Thenormalshutdownsequencewill
notbefollowed.Thefansstopandtheheatercanbeveryhot,whichcanresultindamagetotheheaterandother
componentsclosetoit.
7SafetyTEN-MX2P-B1505
MX²PlusDehumidicationsystem
3Systemdesignandfunction
3.1Mainfunction
TheMuntersPlusunitisdesignedtocontroltheairqualityinarchives,laboratories,cleanroomsorother
applicationswithhighdemandsonclimate.
Allunitsarealwaysdeliveredwithadehumidier.Othercomponentssuchascoolingandheatingcoils,
humidiersorsupplyfansaredelivereddependingontheindividualsystemspecication.
Thesystemissetupandoperatedfromtheoperatorpanel.Wallsensorsorductsensorsmeasurethe
temperatureandhumidityoftheprocessair.Thecontrolsystemandelectricalsafetyfunctionsforallthe
componentsareplacedintheelectricalpanel.
Allcomponentsareregulatedproportionatelyandconguredtoachieveoptimalcapacityandenergyuse
efciency.Theelectricheaterinthedehumidierhasthyristorcontrolandtheelectricheatersfortempering
theairarepulsecontrolled.Thesupplyairfanrunscontinuallytoensurepreciseclimatecontrol.Regulation
canbetimecontrolledonaweekly,monthlyandstipulatedfull-daybasisaswellaswinter/summerperiods
withspecicoperationaltemperatureandhumiditysettings.Severalpossibilitiesexistforconnectingto
buildingmanagementsystemsforcontrollingandmonitoringthefunctions.ContactyournearestMunters
representativeformoreinformationonautomaticsystemsorbusconnections.
3.2Systemdesign
4
1
2
3
5
6
7
Figure3.1MX²Plussystemdesignexample*
1.Filter5.Dehumidier
2.Pre-heatingcoil6.Post-coolingcoil
3.Pre-coolingcoil7.Reactivationfan
4.Supplyfan
*Individualsystemsarebuilttospecication,andcanbedifferentfromthisexample.
TEN-MX2P-B1505Systemdesignandfunction8
MX²PlusDehumidicationsystem
3.3Pre-andpost-treatment
Pre-andpost-treatmentoftheprocessaircanbeperformedbythefollowingfunctionalcomponents:
Inletdamperstoenableisolationoftheunitfromtheairow.Thedampersareinstalledontheoutside
oftheunit.
Amixingboxallowingmixingfreshairwithrecirculationair.
Heatingcoil:Thecoilcanbeelectricorusehotwaterasheatingmedium.Inthecaseofhotwater,the
coilmustbeconnectedtoanexternalheatingmediumsupply.
Coolingcoil:Thecoiluseschilledwater,possiblymixedwithglycol.Thecoilmustbeconnectedto
anexternalmediumsupply.
Humidicationbyevaporationorsteaminjectioninordertoachievetheprocessairqualityspecication
duringdryambientconditions.Seethehumidiersupplement.
Filtersforvariousairqualityspecications.Filterscanbeequippedwithpressuredropsensorstoenable
"blockedlter"alarm.
Asupplyfantoachievetheexternalpressurerequirement.
9SystemdesignandfunctionTEN-MX2P-B1505
MX²PlusDehumidicationsystem
4Maincomponentsdescription
NOTE!Somecomponentsareoptional,andindividualsystemsarebuilttospecication.
NOTE!Allcomponentpicturesareexamples,andmaynotcorrespondtoindividualunits.
4.1Dehumidier
4.1.1Principleofoperation
1
4
2
3
Figure4.1Rotorprinciple
1.Processair
2.Dryair
3.Reactivationair
4.Wetair
Thedesiccantrotoristheadsorptiondehumidifyingcomponentintheunit.Therotorstructureis
comprisedofalargenumberofsmallairchannels.
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.
TEN-MX2P-B1505Maincomponentsdescription10
MX²PlusDehumidicationsystem
A
4
A
3
A
2
A
1
A
5
A
6
A
7
Figure4.2Airowoverview
1.Processair
2.Dryair
3.Reactivationair
4.Wetair
5.Reactivationfan
6.Rotor
7.Processfan
11MaincomponentsdescriptionTEN-MX2P-B1505
MX²PlusDehumidicationsystem
4.1.2Dehumidiercomponents
3
14
13
12
10
8
7
6
5
2
11
1
18
17
16
15
4
9
Figure4.3Maincomponents(electricversionshown)
1.Filter,reactivationair10.Electricalpanel
2.Controlsystemdisplay11.Drivemotor,rotor
3.Operatorpanel12.Rotorcassette
4.Powersupplyinfeedbox13.Duct,purge,left
1)
5.Processfan(w/opost-treatment)14.Filterguard
6.Duct,bypassdamper
1)
15.Plate,bypass
7.Duct,purge,right
1)
16.Filter,processair
8.Reactivationheater17.Reactivationfan(left)
2)
9.Safetythermostat(HTCO)18.Reactivationfan
1)
Option
2)
Onlyusedforreversedassemblies
TEN-MX2P-B1505Maincomponentsdescription12
MX²PlusDehumidicationsystem
4.1.3Pressuretestpoints
Thebuilt-inpressuretestpointsareusedformeasuringpressuredropacrosstherotorduringbasic
installationworkandinspectionoftherotorcondition.
Forairowadjustment,refertotheInstallationinstructions.
TP 1
TP 2
TP 3
TP 4
Figure4.4Pressuretestpoints
TP1.ProcessairTP1–TP4.Differentialpressure,processair
TP2.WetairTP2–TP3.Differentialpressure,reactivationair
TP3.Reactivationair
TP4.Dryair
13MaincomponentsdescriptionTEN-MX2P-B1505
MX²PlusDehumidicationsystem
4.1.4Hightemperaturecut-out
Thedehumidierisequippedwithsafetythermostats(HTCO)whichpreventitfrombeingoverheatedand
damagedifthereactivationairbecomestoohot.
Thethermostatsensingbulbislocatedinthereactivationairductandmeasuresthetemperatureinfront
oftherotor.Ifthereactivationairtemperatureexceedsthethermostatsetting,thereactivationheateris
switchedoffandthealarmmessage“ReactHeaterHTCO”isshownonthecontrolpaneldisplay.
Afteranalarm,thesafetythermostatmustberesetbypressingthebuttononthethermostathousing.See
Figure4.5forhowtoaccessthethermostathousing.
Inthecaseofelectricalreactivation,resetalsothecircuitbreakersfortheheaterontheelectricalpanel.
Figure4.5Locationofthermostathousing
TEN-MX2P-B1505Maincomponentsdescription14
MX²PlusDehumidicationsystem
4.1.5Bypassdamper
MX² 30
MX² 35-95
Figure4.6Handleforbypassdamper
Aninstalledbypassdamperkitallowsaxedairowtobeusedwhentheprocessairowexceedsthe
maximumrotorowcapacity.Thebypassfunctionconsistsofanadjustabledamperpositionedinthe
bypassairowchannel.Thebypassairowchannelisintegratedwiththeunitandpassesundertherotor.
NOTE!Thebypassdampershouldonlybeadjustedbyspeciallytrainedpersonnel.
1
2
3
4
6
5
Figure4.7Bypassprinciple
1.Reactivationair
2.Heatedreactivationair
3.Wetair
4.Processair
5.Dryair
6.Bypassedprocessair
15MaincomponentsdescriptionTEN-MX2P-B1505
MX²PlusDehumidicationsystem
4.1.6EnergyRecoveryPurgeandEnergyEfciencyPurge
1
2
3
4
7
6
5
6
Figure4.8PrincipleforEnergyRecoveryPurgeandEnergyEfciencyPurge
1.Reactivationair
2.Heatedreactivationair
3.Wetair
4.Processair
5.Dryair
6.Purgeair
7.Warmpurgeair
EnergyRecoveryPurge(ERP)andEnergyEfciencyPurge(EEP)aretwoenergysavingsolutionsthat
recyclesheatfromtherotor,afterthereactivationsectionintherotationaldirectionoftherotor.Aminor
partofthereactivationairowisbypassedtothewarmsectoroftherotor,beforetheairowentersthe
reactivationheater.Theairowisheatedupbytherotorandthenmixedwiththereactivationairow,after
thereactivationheater.Therecycledheatfromtherotorincreasestheefciencyandreducestheenergy
consumption.
Comparedtoastandardunit,ERPwillgivethesamedehumidicationcapacitywithreducedreactivation
heaterenergy.WithEEP ,thereactivationheaterenergyisthesameasinastandardunit,whilethe
dehumidicationcapacityisincreased.
ThepurgeairowductonMX²35–95islocatedinsidetheunitandthepurgeairow(ERP,EEP)cannot
beadjusted.
ThepurgeairowductonMX²30isinstalledontherearsideoftheunit.Thepurgeairow(ERP ,EEP)
canbeadjustedwithadamperinstalledontheduct.
MX² 30
Figure4.9MX²30purgeairowduct
TEN-MX2P-B1505Maincomponentsdescription16
MX²PlusDehumidicationsystem
4.2Watercoils
4.2.1Productdescription
Theunitcanhavewatercoilsforcoolingandheating.Thecoolingorheatingisonlyregulatedifthesupply
airfanisrunning.
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UTION! UTION!
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Ifthereisariskoffreezingwhenuntreatedoutsideairisused,afrostprotectionmonitorsensormustbetted.The
coilsintheunitcanbeseriouslydamagedifthisisnotdone.
Allunitswithhotwatercoilsarealwaysdeliveredwithaninsertionsensorandoutletforaninsertionsensor.
Theheaderisprovidedwithapluggedoutletforventinganddraining.Ifthereisariskoffreezing,thesensor
mustbettedandconnectedaccordingtothewiringdiagramfortheunit.Therecanbeariskoffreezingif
theprocessairistakendirectlyfromoutside.
Ifthewaterinacoilfreezesthiscouldcauseseriousdamage.Afrozencoilmustalmostalwaysbereplaced.
Thewarrantyisnolongervalidevenifthecracksarenotvisible.
CA CA
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UTION! UTION!
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Hotandcoldwatersupplylinesmustonlybedesignedandexecutedbyqualiedpersonneltakingintoaccount
therespectiverelevantlocalregulations.
4.2.2Coilmaintenance
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Coilnshavesharpedges.Alwayswearprotectivegloveswhenworkingwithcoils.
Checkforsignsofcorrosiononsurfaceswithanges.Cleanandrepairifnecessary.
Ifapplicable,removethedropletseparator.
Inspecttheinletsurface(towardsthecoolingcoil).Ifdirty,rinsewithwarmwater.
Airinthepipingreducesthecapacityofthecoil.Ventofftheairviatheairnippleonthehighesthorizontal
partoftheheader.
Inthecaseofalongoperationstoporwhenthetemperatureisbelowfreezingpoint,emptythewaterout
ofthecoil.Dothisviathenippleonthelowesthorizontalpartoftheheader.Notethatsomecoilscannot
bedrained.
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UTION! UTION!
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Donotattempttocleanthewatercoilsmechanically.
NOTE!Inthecaseofdamage,contactMuntersService.Donotattempttocarryoutrepairs.
1.Thecoilsshouldbecheckedatleastonceayear,andcleanedifrequired.
2.Someofthedustwhichpassesthroughthelterscomestorestonthecoilcells.Thislayerofdust
affectstheairowandreducestherateofexchangeleadingtodecreasedunitefciency.
3.Thecoilsshouldthereforebekeptclean.Cleaningcanbedonebyusingavacuumcleaner,lowpressure
compressedairorlowpressurewaterandasoftbrush.Donotforgettocleantheunitinternallyafterthe
coilcleaning.Neveruseahighpressurecleaner,thiswilldamagethecoilns.
17MaincomponentsdescriptionTEN-MX2P-B1505
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