Munters 190TGB-1034-L1604 Owner's manual

Originalinstructions

Usermanual

ML180,ML270,MLT350

Desiccantdehumidier

190TGB-1034-L1604©MuntersEuropeAB2016

Importantuserinformation

Intendeduse

Muntersdehumidiersareintendedtobeusedforthe

dehumidicationofair.Anyotheruseoftheunit,or

usewhichiscontrarytotheinstructionsgiveninthis

manual,cancausepersonalinjuryanddamagetotheunit

andotherproperty.

Nomodicationoftheunitisallowedwithoutprior

approvalbyMunters.Attachmentorinstallation

ofadditionaldevicesisonlyallowedafterwritten

agreementbyMunters.

Warranty

Thewarrantyperiodisvalidfromthedatetheunit

leftourfactory,unlessotherwisestatedinwriting.

Thewarrantyislimitedtoafreeexchangeofpartsor

componentswhichhavefailedasaresultofdefectsin

materialsorworkmanship.

Allwarrantyclaimsmustincludeproofthatthe

faulthasoccurredwithinthewarrantyperiodand

thattheunithasbeenusedinaccordancewiththe

specications.Allclaimsmustspecifytheunittypeand

fabricationnumber.Thisinformationisstampedonthe

identicationplate,seesectionMarking.

Itisaconditionofthewarrantythattheunitforthefull

warrantyperiodisservicedandmaintainedbyaqualied

MuntersengineerorMuntersapprovedengineer.

Accesstospecicandcalibratedtestequipmentis

necessary.Theserviceandmaintenancemustbe

documentedforthewarrantytobevalid.

AlwayscontactMuntersforserviceorrepair.Operating

faultscanoccuriftheunitismaintainedinsufcientlyor

incorrectly.

Safety

Informationaboutdangersareinthismanualindicated

bythecommonhazardsymbol:

W W

ARNING! ARNING!

ARNING!

Indicatesapossibledangerthatcanleadtopersonalinjury.

CA CA

UTION! UTION!

UTION!

Indicatesapossibledangerthatcanleadtodamagetothe

unitorotherproperty,orcauseenvironmentaldamage.

NOTE!Highlightssupplementaryinformationforoptimal

useoftheunit.

ConformitywithDirectives

Thedehumidierisinconformitywiththeessential

safetyrequirementsoftheMachineryDirective

2006/42/EC,andinconformitywiththeprovisionsof

theEcodesignDirective(ErP)2009/125/EC,andof

theEMCDirective2004/108/EC.Thedehumidieris

manufacturedbyanorganizationcertiedaccordingto

ISO9001andISO14001.

Thecontentsofthismanualcanbechangedwithout

priornotice.

NOTE!Thismanualcontainsinformationwhichis

protectedbycopyrightlaws.Itisnotallowedtoreproduceor

transmitanypartofthismanualwithoutwrittenconsentfrom

Munters.

Pleasesendanycommentsregardingthismanualto:

MuntersEuropeAB

TechnicalDocumentation

P.O.Box1150

SE-16426KISTASweden

e-mail:t-doc@munters.se

iiImportantuserinformation190TGB-1034-L1604

Tableofcontents

Importantuserinformation...............ii

Intendeduse...........................

Warranty...............................

Safety..................................

ConformitywithDirectives............

Tableofcontents...........................iii

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

1.1Aboutthismanual.....................

1.2Unintendeduse........................

1.3Safetyandcautions...................

1.4Markings...............................

1.5Supervisionofoperation..............

1.6Faultindications.......................

2Dehumidierdesign.......................4

2.1Productdescription...................

2.2Functiondescription..................

2.3Maincomponents.....................

3Transport,inspectionandstorage.......6

3.1Transport..............................

3.2Inspectionofdelivery..................

3.3Storingtheequipment................

4Installation...................................7

4.1Safety..................................

4.2Siterequirements.....................

4.3Foundation............................

4.4Mirrorhandedductconnections......

4.5Ductinstallation.......................

4.5.1Generalrecommendations...

4.5.2Ductforoutdoorairinlet.......

4.5.3Ductforwetairoutlet...........

4.6Precautionarymeasuresforunitswith

LIdesiccantrotor......................

4.7Electricalconnections................

4.8Externalhumiditysensor.............

5Commissioning.............................15

5.1Pre-startchecks.......................

5.2Airowcheckandadjustment........

6Operation....................................17

6.1General................................

6.2Quickstop..............................

6.3Beforestarting.........................

6.4Operatorpanel........................

6.5RH98operatorpanel..................

6.6Operatingtheunit.....................

6.6.1Manualmode..................

6.6.2Automaticmode–humidity

sensorconnected..............

6.6.3Automaticmode-RH98.......

7Serviceandmaintenance.................21

7.1Safety..................................

7.2General................................

7.3Serviceoptions........................

7.4Extendedwarranty....................

7.5Cleaning...............................

7.6Serviceandmaintenanceschedule..

7.7Filterchange...........................

8Faulttracing.................................25

8.1General................................

8.2Safety..................................

8.3Faulttracinglist........................

9Technicalspecication....................27

9.1Dimensionsandservicespace.......

9.2Capacitydiagrams....................

9.3Technicaldata.........................

9.4Sounddata.............................

9.4.1SounddataML180............

9.4.2SounddataML270............

9.4.3SounddataMLT350...........

10Scrapping....................................33

Appendix1Options.............................34

1.1General................................

1.2Runningtimemeter...................

1.3Humiditycontrolsystem..............

1.3.1Introduction....................

1.3.2Transmitter.....................

1.3.3Controlunit.....................

1.3.4Setpointsandcontrol

parameters.....................

1.3.5Display/changesetpointfor

relativehumidity...............

190TGB-1034-L1604Tableofcontentsiii

1.3.6Display/changeother

parameters.....................

1.3.7Processalarms................

2ContactMunters............................39

ivTableofcontents190TGB-1034-L1604

DehumidierML180-MLT350

1Introduction

1.1Aboutthismanual

Thismanualiswrittenfortheuserofthedehumidier.Itcontainsnecessaryinformationforhowtoinstall

andusethedehumidierinasafeandefcientway.Readthroughthemanualbeforethedehumidieris

installedandused.

ContactyournearestMuntersofceifyouhaveanyquestionsregardingtheinstallationortheuseofyour

dehumidier.

Thismanualmustbestoredinapermanentlocationclosetothedehumidier.

1.2Unintendeduse

■Thedehumidierisnotintendedforoutdoorinstallation.

■Thedehumidierisnotintendedforuseinclassiedareaswhereexplosionsafetycompliantequipment

isrequired.

■Thedehumidiermustnotbeinstallednearanyheatgeneratingdevicesthatcancausedamagetothe

equipment.

1.3Safetyandcautions

Everymeasurehasbeentakeninthedesignandmanufactureofthedehumidiertoensurethatitmeetsthe

safetyrequirementsofthedirectivesandstandardslistedintheECDeclarationofConformity.

Theinformationinthismanualshallinnowaytakeprecedenceoverindividualresponsibilitiesorlocal

regulations.

Duringoperationandotherworkwithamachineitisalwaystheresponsibilityoftheindividualtoconsider

thefollowing:

■Thesafetyofallpersonsconcerned.

■Thesafetyoftheunitandotherproperty.

■Theprotectionoftheenvironment.

ThetypesofdangersthatareindicatedinthismanualaredescribedinthesectionImportantuserinformation.

190TGB-1034-L1604Introduction1

DehumidierML180-MLT350

W W

ARNING! ARNING!

ARNING!

-Theunitmustnotbesplashedwithorimmersedinwater.

-Theunitmustneverbeconnectedtoavoltageorfrequencyotherthanthatforwhichitwasdesigned.Refertothe

identicationplate.Linevoltagethatistoohighcancauseanelectricalshockhazardanddamagetotheunit.

-Donotinsertngersoranyobjectsintotheairvents.

-Allelectricalinstallationsmustbecarriedoutbyaqualiedelectricianandinaccordancewithlocalregulations.

-Thedehumidiercanrestartautomaticallyafterapowercut.Alwayssetandlockthemainpowerswitchinthe

OFFpositionbeforecarryingoutanyservicework.

-Useonlyapprovedliftingequipmenttopreventpersonalinjuryanddamagetotheequipment.

-AlwayscontactMuntersforserviceorrepair.

2Introduction190TGB-1034-L1604

DehumidierML180-MLT350

1.4Markings

(GB)CHANGE FILTER

Figure1.1Identicationplateandmarkings

(GB) CHANGE FILTER

(SW) BYT FILTER

(FR) REMPLACER LE FILTER

(DE) FILTER AUSWECHSELN

Figure1.2Replacelter

Figure1.3Labelsforairinletsandoutlets

1.Unitidenticationplate

4.Processairinlet

2.Dryairoutlet5.Reactivationairinlet

3.Wetairoutlet

6.Replacelter

1.5Supervisionofoperation

Thedehumidieriscontrolledandmonitoredusingtheoperatorpanellocatedonthefrontoftheunit.

1.6Faultindications

Faultsareclearlyindicatedontheoperatorpanel,seesection6.4,Operatorpanel.

Alarmsrelatingtorelativeairhumidityaregiveninthedisplayofthehumiditycontrolsystem(ifinstalled),

seeappendix1.3,Humiditycontrolsystem.

190TGB-1034-L1604Introduction3

DehumidierML180-MLT350

2Dehumidierdesign

2.1Productdescription

ThedesiccantdehumidiersintheMLserieshavebeendevelopedtoeffectivelydehumidifytheairin

environmentsrequiringlowairhumidity.

Thedehumidierisequippedwithanencapsulatedrotorunit.Therotorcasingisconstructedofdurable

thermosetplasticandcontainsisolatedsectionsthatprovideaprecisebalanceforthedehumidication,

reactivationandheatrecoveryairows.

ThedehumidierismanufacturedinaccordancewithuniformEuropeanstandardsandestablished

requirementsforCE-marking.

2.2Functiondescription

1.Processair

2.Dryair

3.Reactivationair

Figure2.1Internalairows

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.

4Dehumidierdesign190TGB-1034-L1604

DehumidierML180-MLT350

2.3Maincomponents

Figure2.2Maincomponents

Sealingring,rotor

10.

Reactivationairlter

2.Upperrotorcover11.Reactivationairimpeller

3.Electricalcontrolpanel12.Fanmotor

4.Reactivationheater13.Processairimpeller

Drivemotor14.

Processairlter

Switch(rocker,2-pole)

15.Lowerrotorcover

Temperatureindicator16.Drivebelt

8.Pulley,beltdrive17.Rotor

9.Roller,beltguide

190TGB-1034-L1604Dehumidierdesign5

DehumidierML180-MLT350

3Transport,inspectionandstorage

3.1Transport

Thedehumidierisdeliveredonapalletandmustbehandledcarefully.Allpaneldoorsontheunitmustbe

closedduringtransport.Providedthatthedehumidierisstillsecuredtoitsdeliverypallet,itcanbemoved

usingafork-lifttruck.

W W

ARNING! ARNING!

ARNING!

Movethedehumidiercarefullyasthereisariskofthedehumidiertippingover.

Figure3.1Correctlengthonforkliftarms

Weightofthedehumidiercanbefoundinsection9.1,Dimensionsandservicespace.

3.2Inspectionofdelivery

■Doaninspectionofthedeliveryandcomparewiththedeliverynote,orderconrmationorother

deliverydocumentation.Makesurethateverythingisincludedandnothingisdamaged.

■ContactMuntersimmediatelyifthedeliveryisnotcompleteordamagedinordertoavoidinstallation

delays.

■Removeallpackagingmaterialfromtheunit,andmakesurethatnodamagehasbeenmadeduring

transportation.

■AnyvisibledamagemustbereportedinwritingtoMunterswithin3daysandpriortoinstallationof

theunit.

■Discardthepackagingmaterialaccordingtolocalregulations.

3.3Storingtheequipment

Followtheseinstructionsifthedehumidieristobestoredpriortoinstallation:

■Placethedehumidierinanuprightpositiononahorizontalsurface.

■Re-usethepackagingmaterialtoprovideprotectionfortheunit.

■Protectthedehumidierfromphysicaldamage.

■Storethedehumidierundercoverandprotectitfromdust,frost,rainandaggressivecontaminants.

6Transport,inspectionandstorage190TGB-1034-L1604

DehumidierML180-MLT350

4Installation

4.1Safety

W W

ARNING! ARNING!

ARNING!

-Theunitmustnotbesplashedwithorimmersedinwater.

-Theunitmustneverbeconnectedtoavoltageorfrequencyotherthanthatforwhichitwasdesigned.Refertothe

identicationplate.Linevoltagethatistoohighcancauseanelectricalshockhazardanddamagetotheunit.

-Donotinsertngersoranyobjectsintotheairvents.

-Allelectricalinstallationsmustbecarriedoutbyaqualiedelectricianandinaccordancewithlocalregulations.

-Thedehumidiercanrestartautomaticallyafterapowercut.Alwayssetandlockthemainpowerswitchinthe

OFFpositionbeforecarryingoutanyservicework.

-Useonlyapprovedliftingequipmenttopreventpersonalinjuryanddamagetotheequipment.

-AlwayscontactMuntersforserviceorrepair.

CA CA

UTION! UTION!

UTION!

Thewetairductmustalwaysbeinsulatedwhenthereisariskoffreezing.Condensationbuildsupeasilyonthe

insideoftheductbecauseofthehighmoisturecontentofthewetairleavingthedehumidier.

CA CA

UTION! UTION!

UTION!

Thedehumidierhasbeendesignedtooperateatspecicprocessairowscorrespondingtothefansizes

installed.

4.2Siterequirements

Thedehumidierisonlyintendedforindoorinstallation.Avoidinstallingthedehumidierinadamp

environmentwherethereisariskofwaterenteringtheunitorinaverydustyenvironment.Ifindoubt,

contactMunters.Itisimportantthattheintendedinstallationsitemeetsthelocationandspacerequirements

fortheequipmentinordertoachievethebestpossibleperformance.

Fortheunitdimensionsandservicespacerequirements,seesection9.1,Dimensionsandservicespace.

NOTE!Ifthereisaneedforreductionofvibrationsfromthedehumidier,contactMuntersforinstructions.

190TGB-1034-L1604Installation7

DehumidierML180-MLT350

4.3Foundation

Thedehumidiermustbeinstalledonaleveloor,oronaplatformcapableofsupportingthemachine

weight.Ifthemaximumoorloadingweightisnotexceeded,specialfoundationsarenotrequired.

Whenthedehumidierhasbeeninstalled,checkthatitislevel.

Iflocalregulationsrequirethattheunitispermanentlyxedinposition,thexingholescanbeusedfor

boltingtheunittotheoor.

Figure4.1Drillingpattern

4.4Mirrorhandedductconnections

Thefrontandrearpanelsareinterchangeable,sothattheconnectionsforprocessairanddryairmaybe

situatedeitherontheleftorrightsideoftheunit.

Thedehumidiersaredeliveredwiththeprocessanddryairconnectionsontheleftsideoftheunit.If

itisrequiredtochangetheorientation,sothattheconnectionsareontherightsideoftheunit,proceed

asfollows.

W W

ARNING! ARNING!

ARNING!

Makesurethatthedehumidierisdisconnectedfromthemainspowerbeforechangingthepositionsofthe

processairanddryairconnections.

8Installation190TGB-1034-L1604

DehumidierML180-MLT350

Figure4.2Changingpanelpositions

1.Removethetwobolts(B)securingthefrontpanelandcarefullyremovethepanel.

2.Removethetwoboltssecuringtherearpanelandcarefullyremovethepanel.

3.Removethetwobolts(A)andwasherssecuringthecontrolandtoppanels,thencarefullyremovethe

toppanel.

4.Removethecableductcovers(C),re-routethecablesandtthecontrolpanel(D)ontotheoppositeside

oftheunit.Retthecableductcovers.

5.Fitthefront,rearandtoppanelsintheirnewpositions.

4.5Ductinstallation

4.5.1Generalrecommendations

Theconnectionsforprocessandreactivationairaredesignedinaccordancewiththerecommendationsin

ISO13351.TherectangularductconnectionscontaintappedinsertsforM8screws.

Figure4.3Ductconnections

190TGB-1034-L1604Installation9

DehumidierML180-MLT350

Partnumber170-013477–001170-013477–002170-013477–003170-013477–004

Ø80Ø100Ø125Ø160

See9.1,Dimensionsandservicespace.

L(mm)

225225220140

ML180XX

ML270XX

MLT350XX

CA CA

UTION! UTION!

UTION!

Thedehumidierhasbeendesignedtooperateatspecicprocessairowscorrespondingtothefansizes

installed.

■Theprocessairanddryairductsshouldbethesamediameter.Thesameappliestothereactivationair

andwetairducts.

■Thelengthofductworkmustbekeptasshortaspossibletominimisestaticairpressurelosses.

■Tomaintainperformance,allrigidprocessorreactivationairductworkjointsmustbeairandvapour

tight.

■Theprocessairductworkmustbeinsulatedtopreventcondensationdevelopingontheoutsideofthe

duct,wheneverthetemperatureoftheairwithintheductfallsbelowthedewpointtemperatureofthe

ambientairthroughwhichtheductworkisrouted.

■Theductsmustalwaysbeinsulatedwhenthereisariskoffreezing.

■Thewetairleavingthedehumidierwill,becauseofhighmoisturecontent,condenseontheinsideduct

walls.Byinsulatingtheducts,theamountofcondensateisreduced.

■Horizontalwetairductsmustbeinstalledwithaslightdecline(awayfromthedehumidier)todrain

awaypossiblecondensation.Suitablecondensationdrainsmustbeinstalledatlowpointsinthewet

airoutletduct,seeFigure4.6.

■Ensurethataccessforoperationandservicingisnotrestrictedwhendesigningandinstallingducting.

Formoreinformation,refertosection9.1,Dimensionsandservicespace.

■Toreducenoiseand/orvibrationbeingtransmittedalongrigidducts,goodquality,airtightexible

connectionscanbetted.

■Ductsmounteddirectlyontotheunitmustbeindependentlysupportedtominimisetheloadontheunit.

■Dampersforadjustingtheairowsmustbeinstalledinthesupplyairoutletandreactivationairinlet

ducts.Correctairowsareessentialfortheoperatingefciencyoftheunit.Forairowadjustment

instructions,seesection5.2,Airowcheckandadjustment.

■Thetotalpressuredropintheprocessandreactivationductworkmustnotexceedtheavailablepressure

ofthefansttedtothedehumidier.Fordetailsofminimumavailablestaticpressure,seesection

9.3,Technicaldata.

10Installation190TGB-1034-L1604

DehumidierML180-MLT350

Munter s

420

Figure4.4Ductsrequiredforinstallation

A.Processairinlet1.Dryairdamper

B.Dryairoutlet

2.Externallterbox(option)

C.Reactivationairinlet

3.Ducttransition

D.Wetairoutlet4.Reactivationairdamper

5.Outlet/inletduct(wirenetting)

190TGB-1034-L1604Installation11

DehumidierML180-MLT350

4.5.2Ductforoutdoorairinlet

Whenbringingambientairfromoutdoorsintothedehumidier,theinletductopeningmustbelocated

sufcientlyhighabovegroundleveltopreventdustanddebrisfromentering.

Theductingmustbedesignedtopreventrainandsnowfrombeingdrawnintothedehumidier.Theair

inletmustbelocatedawayfrompossiblecontaminantssuchasengineexhaustgases,steamandharmful

vapours.

Topreventthewet(outlet)airfromhumidifyingthereactivation(inlet)air,theairinletforreactivationmust

belocatedatleast2mfromthewetairoutlet.

Attachawirenetwithameshwidthofapproximately10mmintheouterendoftheducttopreventanimals

fromenteringthedehumidierducting.

Figure4.5Outdoorairinletdesign

A.Rectangularducting

B.Roundducting

C.Wirenetting

4.5.3Ductforwetairoutlet

Makesurethattheambientairpressureisthesameattheairinletandatthewetairoutlettopreventthe

riskofreverseairow.

Thematerialforthewetairductmustwithstandcorrosionandtemperaturesofupto100°C.Thewetair

ductingmustalwaysbeinsulatedifthereisariskofcondensation.Thewetairleavingthedehumidierwill

easilycausecondensationontheinsideoftheductwallsduetothehighmoisturecontent.

Horizontalductsmustbeinstalledslopingdownwards(awayfromthedehumidier)todrainawaypossible

condensation.Theductslopemustbeatleast2cm/m.Inaddition,drainageholes(5mm)shouldbemadeat

lowpointsintheducttopreventwateraccumulation.

Attachawirenetwithameshwidthofapproximately10mmintheouterendoftheducttopreventanimals

fromenteringthedehumidierducting.

Figure4.6Wetairoutletdesign

A.Horizontalwetairoutlet

B.Verticalwetairoutlet

C.Wirenetting

D.Downwardslope

E.Condensatedrainage

12Installation190TGB-1034-L1604

DehumidierML180-MLT350

4.6PrecautionarymeasuresforunitswithLIdesiccantrotor

ThestandarddeliveryisMuntershighperformancedesiccantrotorHPS(HighPerformanceSilicagel).

IfthedehumidierisdeliveredwithanLIrotor(lithiumchloride)itisimportantthattherotordoesnot

becomeloadedwithmoisturewhenthedehumidierisoff.

NOTE!Makesurethatnoairpassingthroughtherotorhasarelativehumiditygreaterthan80%.

Itisrecommendedtoinstallclosingdampersintheprocessandreactivationairinletstoavoidthatairwith

highrelativehumidityisdrawnthroughtherotorandintotheroom.

Thisisparticularlyimportantwhentheprocessairisdrawnfromoutdoors,orwhenthesystemhasbeen

ttedwithapre-cooler.

4.7Electricalconnections

W W

ARNING! ARNING!

ARNING!

Allelectricalequipmentconnectionsmustbecarriedoutinaccordancewithlocalregulationsandbyqualied

personnel.Riskofelectricalshock.

W W

ARNING! ARNING!

ARNING!

Theunitmustneverbeconnectedtoavoltageorfrequencyotherthanthatforwhichitwasdesigned.Refertothe

unitidenticationplate.

Eachunitissuppliedcompletewithalltheinternalwiringinstalledandconguredinaccordancewiththe

speciedvoltageandfrequencyontheidenticationplate.

ML180&MLT350dehumidiersaresuppliedcompletewithaprewiredmainscable.Thecableisttedwith

amulti-pinplugsuitableforconnectiontoasinglephaseearthedmainssocket.

NOTE!Thesupplyvoltagemustnotdifferfromthespeciedoperatingvoltagebymorethan+/-10%.

Forconnectiondetails,seetheidenticationplateandthewiringdiagramorsection9.3,Technicaldata.

4.8Externalhumiditysensor

ML-seriesdehumidiersarewiredsothatwhentheunitissettoAUTOmatic,itcanbecontrolledfrom

anexternallymountedhumiditysensor.

ML180-MLT350havebeendesignedwithaone-stepheater,andthereforecontrolislimitedtoswitchingthe

unitonandoffusingaone-stephumiditysensor.

Alowvoltageconnector(mountedonthesideoftheunit)isprovidedforelectricalconnectionofaone-step

humiditysensor.Formoreinformation,seethewiringdiagram.

NOTE!Wherenohumiditysensorisconnectedtotheunit,thedehumidierwillbeoperatingatmaximumoutput

foraslongastheunitisswitchedon.

Aroomhumiditysensoristobemounted1-1.5mabovetheoor.Itmustbepositionedsothatitisnot

directlyexposedtodryairfromtheunitortohumidairowinginthroughopeningdoors.Positionitaway

fromheatsourcesanddirectsunlight.

■Thehumiditysensorconnectingcableshouldhaveaconductorareaofnotlessthan

0,75mm

andmusthaveaninsulationresistanceratinginexcessof500VAC.

190TGB-1034-L1604Installation13

DehumidierML180-MLT350

■ThehumiditysensormustbedesignedsothatthecontactscloseonarisingRHtocompletethecontrol

circuitandstartthedehumidier.

■Voltagedropscanoccurwhenusingexcessivelylongcables.

Ifthevoltageacrosstheterminalsusedforconnectingthehumiditysensorislessthan20VAC,aseparate

relaycontrolledbythehumiditysensormustbeused.

14Installation190TGB-1034-L1604

DehumidierML180-MLT350

5Commissioning

Priortostartingforthersttime,someoperatingparametersmustbesetinthecontrolsystem,seechapter

6.4,Operatorpanel.

Somefeaturesrequireconnectionofexternalequipment.Forwiringdetails,seethewiringdiagram.

5.1Pre-startchecks

W W

ARNING! ARNING!

ARNING!

Installation,adjustments,maintenanceandrepairsmustonlybecarriedoutbyqualiedpersonnelwhoare

awareoftherisksinvolvedwhenworkingwithequipmentoperatingwithhighelectricalvoltageandhighmachine

temperatures.

Beforestartingthedehumidierforthersttime,ensurethatthemainspowersupplyisisolatedfromthe

dehumidierandcarry-outthefollowingchecks:

1.CheckthattheModeswitchonthedehumidierisinthe“OFF”position,seesection6.4,Operatorpanel.

2.Checktheairintakeltersfordamageandproperxationandalsocheckthatallareasinsidetheunitare

clean.

3.Visuallyinspectallductingandductconnectionstomakesurethatallconnectionshavebeencorrectly

installedandthattherearenosignsofdamagetothesystem.Alsocheckthatallductsarefreefrom

obstaclesblockingtheairpassage.

4.Removethetoppanelandcheckthatnoneofthemaincontactbreakersintheelectricaloperatorpanel

havebeentripped.Fordetailsrefertothewiringdiagramsprovidedwiththeunit.

5.Checkthattheincomingpowersupplyvoltageiscorrectandthatthecablesarecorrectlyconnected.

6.TheML270hasa3phasefanmotorandtherotationdirectionofthefanimpellermustbecheckedafter

connectiontothepowersupply.Openthefrontpanelofthedehumidierandtakeouttheprocesslter.

Startthedehumidierandcheckthatthefanimpellerisrotating.Switchoffthedehumidierandwatch

thefanimpellerjustbeforeitstopsrotating.Checkthatitisrotatingclockwise.

7.Ifanexternalhumiditysensorisused,checkthatthesensoriscorrectlypositionedintheroomandis

correctlyconnectedtotheunit,seesection4.8,Externalhumiditysensor.

8.Settheprocessandreactivationairowdamperstothefullyopenposition.

190TGB-1034-L1604Commissioning15

DehumidierML180-MLT350

5.2Airowcheckandadjustment

Toobtainthedesignperformance,thedryairandreactivationairowdampersmustbecorrectlyadjustedin

accordancewiththeratedairow,seesection9.3,Technicaldata.

Ifnecessary,contactMuntersforassistanceconcerninginstallationandsettings.Munterscontactaddresses

areprovidedonthebackcoverofthismanual.

CA CA

UTION! UTION!

UTION!

Incorrectlysetprocessandreactivationairowscancausetheunittomalfunction.

Anydamagetotheunitresultingfromincorrectadjustmentoftheairowscaninvalidatethewarrantyoftheunit.

Theunitmustnotberunformorethanafewminutesbeforesettingupthecorrectairows.

1.Adjustthedampersinstalledinthedryairoutletandreactivationairinletductstothecorrectrated

airows.

2.Startthedehumidierandrunatfullpowerfor8minutestoallowthereactivationheatertoreachits

normaloperatingtemperature.

3.Verifythatthetemperaturedifferencebetweenthereactivationinletairandthereactivationtemperature

is95°C(tolerancelimit±5°C).Ifthetemperaturedifferenceliesoutsideofthe5%tolerancelimit,the

reactivationairdampercanbeadjustedinsmallstepsuntilthereactivationtemperatureiswithinthe

speciedtolerances.Allowthetemperaturetostabiliseaftereachadjustment.

Example:

Inletairtemperature=15°C

Reactivationairtemperature=110°C

Temperatureincrease=95°C

16Commissioning190TGB-1034-L1604

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Munters 190TGB-1034-L1604 Owner's manual

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