Munters 190TGB-1035-H1604 Owner's manual

Originalinstructions

Usermanual

ML420,ML690,MLT800

ML1100,ML1350,MLT1400

Desiccantdehumidier

190TGB-1035-H1604©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

W

ARNING! ARNING!

ARNING!

Indicatesapossibledangerthatcanleadtopersonalinjury.

CA 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.

Copyright

Thecontentsofthismanualcanbechangedwithout

priornotice.

NOTE!Thismanualcontainsinformationwhichis

protectedbycopyrightlaws.Itisnotallowedtoreproduceor

transmitanypartofthismanualwithoutwrittenconsentfrom

Munters.

Pleasesendanycommentsregardingthismanualto:

MuntersEuropeAB

TechnicalDocumentation

P.O.Box1150

SE-16426KISTASweden

e-mail:t-doc@munters.se

iiImportantuserinformation190TGB-1035-H1604

Tableofcontents

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

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

ii

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

ii

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

ii

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

ii

Copyright..............................

ii

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

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

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

1

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

1

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

1

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

3

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

3

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

3

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

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

4

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

4

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

5

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

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

6

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

6

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

6

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

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

7

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

7

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

8

4.4Mirrorhandedductconnections......

8

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

9

4.5.1Generalrecommendations...

9

4.5.2Ductforoutdoorairinlet.......

12

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

12

4.6Precautionarymeasuresforunitswith

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

13

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

13

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

13

4.9Gasreactivation(ML1100units

only)....................................

14

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

5.1Settingsbeforestart-up...............

15

5.1.1Continuousprocessairfan

operation.......................

15

5.1.2Single-stagehumiditysensor.

15

5.1.3Two-stagehumiditysensor...

15

5.1.4Remotefaultindication........

15

5.2Pre-startchecks.......................

16

5.3Airowcheckandadjustment........

17

6Operation....................................18

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

18

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

18

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

18

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

19

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

21

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

21

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

21

6.6.2Automaticmode–humidity

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

22

6.6.3Automaticmode-RH98or

VariDry(option)................

22

7Serviceandmaintenance.................24

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

24

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

24

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

24

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

25

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

25

7.6Serviceandmaintenanceschedule..

25

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

27

8Faulttracing.................................28

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

28

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

28

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

29

9Technicalspecication....................31

9.1Dimensionsandservicespace.......

31

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

32

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

34

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

36

9.4.1SounddataML420............

36

9.4.2SounddataML690............

37

9.4.3SounddataMLT800...........

37

9.4.4SounddataML1100...........

38

9.4.5SounddataML1350...........

38

9.4.6SounddataMLT1400..........

39

10Scrapping....................................40

190TGB-1035-H1604Tableofcontentsiii

Appendix1Options.............................41

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

41

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

41

1.3Rotorstopalarm.......................

41

1.4Blockedlteralarm....................

41

1.5Filterbox-M5andF7..................

41

1.6Humiditycontrolsystem..............

42

1.6.1Introduction....................

42

1.6.2Transmitter.....................

42

1.6.3Controlunit.....................

42

1.6.4Setpointsandcontrol

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

43

1.6.5Display/changesetpointfor

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

44

1.6.6Display/changeother

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

44

1.6.7Processalarms................

47

2ContactMunters............................49

ivTableofcontents190TGB-1035-H1604

DehumidierML420-MLT1400

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-1035-H1604Introduction1

DehumidierML420-MLT1400

W W

W

ARNING! ARNING!

ARNING!

-Theunitmustnotbesplashedwithorimmersedinwater.

-Theunitmustneverbeconnectedtoavoltageorfrequencyotherthanthatforwhichitwasdesigned.Refertothe

identicationplate.Linevoltagethatistoohighcancauseanelectricalshockhazardanddamagetotheunit.

-Donotinsertngersoranyobjectsintotheairvents.

-Allelectricalinstallationsmustbecarriedoutbyaqualiedelectricianandinaccordancewithlocalregulations.

-Thedehumidiercanrestartautomaticallyafterapowercut.Alwayssetandlockthemainpowerswitchinthe

OFFpositionbeforecarryingoutanyservicework.

-Useonlyapprovedliftingequipmenttopreventpersonalinjuryanddamagetotheequipment.

-AlwayscontactMuntersforserviceorrepair.

2Introduction190TGB-1035-H1604

DehumidierML420-MLT1400

1.4Markings

Reg.luft

Reac.air

Reg.Luft

Air de regeneration

' ' '

Processluft

Process air

Prozessluft

Air a traiter

`

Våtluft

Wet air

Nassluft

Air humide

Torrluft

Dry air

Trockenluft

Air sec

3

1

4

5

2

Figure1.1Identicationplateandmarkings

Figure1.2Identicationplate,example

3

Figure1.3Labelsforairinletsandoutlets

1.Unitidenticationplate

4.Processairinlet

2.Dryairoutlet5.Reactivationairinlet

3.Wetairoutlet

Explanationof"Fabr.no"ontheidenticationplate:

09=yearofmanufacture,19=weekofmanufacture,190XXX=articlenumber,XXXXX=serialnumber

1.5Supervisionofoperation

Thedehumidieriscontrolledandmonitoredusingtheoperatorpanellocatedonthefrontoftheunit.

1.6Faultindications

Faultsareclearlyindicatedontheoperatorpanel,seesection6.4,Operatorpanel.

Alarmsrelatingtorelativeairhumidityaregiveninthedisplayofthehumiditycontrolsystem(ifinstalled),

seeappendix1.6,Humiditycontrolsystem.

190TGB-1035-H1604Introduction3

DehumidierML420-MLT1400

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

2

4

3

1

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-1035-H1604

DehumidierML420-MLT1400

2.3Maincomponents

11

1

4

5

6

8

9

2

16

3

12

14

13

15

10

7

Figure2.2Maincomponents

1.Lowerrotorcover9.Drivemotor

2.Roller,beltguide10.Pulley,beltdrive

3.Drivebelt11.

Reactivationairlter

4.Rotor12.Reactivationairimpeller

5.

Sealingring,rotor

13.

Reactivationfanmotor

6.Upperrotorcover14.

Processfanmotor

7.

Electricalcontrolpanel15.Processairimpeller

8.Reactivationheater16.

Processairlter

NOTE!TheML420unithasonlyonefanmotorthatisplacedbetweentheprocessandreactivationimpeller.

190TGB-1035-H1604Dehumidierdesign5

DehumidierML420-MLT1400

3Transport,inspectionandstorage

3.1Transport

Thedehumidierisdeliveredonapalletandmustbehandledcarefully.Allpaneldoorsontheunitmustbe

closedduringtransport.Providedthatthedehumidierisstillsecuredtoitsdeliverypallet,itcanbemoved

usingafork-lifttruck.

W 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-1035-H1604

DehumidierML420-MLT1400

4Installation

4.1Safety

W W

W

ARNING! ARNING!

ARNING!

-Theunitmustnotbesplashedwithorimmersedinwater.

-Theunitmustneverbeconnectedtoavoltageorfrequencyotherthanthatforwhichitwasdesigned.Refertothe

identicationplate.Linevoltagethatistoohighcancauseanelectricalshockhazardanddamagetotheunit.

-Donotinsertngersoranyobjectsintotheairvents.

-Allelectricalinstallationsmustbecarriedoutbyaqualiedelectricianandinaccordancewithlocalregulations.

-Thedehumidiercanrestartautomaticallyafterapowercut.Alwayssetandlockthemainpowerswitchinthe

OFFpositionbeforecarryingoutanyservicework.

-Useonlyapprovedliftingequipmenttopreventpersonalinjuryanddamagetotheequipment.

-AlwayscontactMuntersforserviceorrepair.

CA CA

CA

UTION! UTION!

UTION!

Thewetairductmustalwaysbeinsulatedwhenthereisariskoffreezing.Condensationbuildsupeasilyonthe

insideoftheductbecauseofthehighmoisturecontentofthewetairleavingthedehumidier.

CA 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-1035-H1604Installation7

DehumidierML420-MLT1400

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

W

ARNING! ARNING!

ARNING!

Makesurethatthedehumidierisdisconnectedfromthemainspowerbeforechangingthepositionsofthe

processairanddryairconnections.

8Installation190TGB-1035-H1604

DehumidierML420-MLT1400

Figure4.2ChangingpanelpositionsFigure4.3Rotorstop(E)andltermonitors(F)

1.Removethetwobolts(B)securingthefrontpanelandcarefullyremovethepanel.

2.Removethetwoboltssecuringtherearpanelandcarefullyremovethepanel.

3.Removethetwobolts(A)andwasherssecuringthecontrolandtoppanels,thencarefullyremovethe

toppanel.

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

oftheunit.Retthecableductcovers.

5.Loosentherotorstop(E)andthetwoltermonitors(F).Removethecableties.

6.Fittherotorstopandltermonitorsontheoppositesideoftheunit.Tiethecables.

7.Fitthefront,rearandtoppanelsintheirnewpositions.

4.5Ductinstallation

4.5.1Generalrecommendations

Theconnectionsforprocessandreactivationairaredesignedinaccordancewiththerecommendationsin

ISO13351.TherectangularductconnectionscontaintappedinsertsforM8screws.

Figure4.4Ductconnections

190TGB-1035-H1604Installation9

DehumidierML420-MLT1400

Partnumber170-013448–005170-013448–004170-013448–003170-013448–002170-013448–001

A

Ø100Ø125Ø160Ø200Ø250

B

Seesection9.1,Dimensionsandservicespace.

L(mm)

210210200140150

ML420XX

ML690XX

MLT800XX

ML1100XX

ML1350XX

MLT1400XX

CA 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,seeFigure4.7.

■Ensurethataccessforoperationandservicingisnotrestrictedwhendesigningandinstallingducting.

Formoreinformation,refertosection9.1,Dimensionsandservicespace.

■Toreducenoiseand/orvibrationbeingtransmittedalongrigidducts,goodquality,airtightexible

connectionscanbetted.

■Ductsmounteddirectlyontotheunitmustbeindependentlysupportedtominimisetheloadontheunit.

■Dampersforadjustingtheairowsmustbeinstalledinthesupplyairoutletandreactivationairinlet

ducts.Correctairowsareessentialfortheoperatingefciencyoftheunit.Forairowadjustment

instructions,seesection5.3,Airowcheckandadjustment.

■Thetotalpressuredropintheprocessandreactivationductworkmustnotexceedtheavailablepressure

ofthefansttedtothedehumidier.Fordetailsofminimumavailablestaticpressure,seesection

9.3,Technicaldata.

10Installation190TGB-1035-H1604

DehumidierML420-MLT1400

ML

Munter s

420

1

2

3

5

4

C

B

D

A

Figure4.5Ductsrequiredforinstallation

A.Processairinlet1.Dryairdamper

B.Dryairoutlet

2.Externallterbox(option)

C.Reactivationairinlet

3.Ducttransition

D.Wetairoutlet4.Reactivationairdamper

5.Outlet/inletduct(wirenetting)

190TGB-1035-H1604Installation11

DehumidierML420-MLT1400

4.5.2Ductforoutdoorairinlet

Whenbringingambientairfromoutdoorsintothedehumidier,theinletductopeningmustbelocated

sufcientlyhighabovegroundleveltopreventdustanddebrisfromentering.

Theductingmustbedesignedtopreventrainandsnowfrombeingdrawnintothedehumidier.Theair

inletmustbelocatedawayfrompossiblecontaminantssuchasengineexhaustgases,steamandharmful

vapours.

Topreventthewet(outlet)airfromhumidifyingthereactivation(inlet)air,theairinletforreactivationmust

belocatedatleast2mfromthewetairoutlet.

Attachawirenetwithameshwidthofapproximately10mmintheouterendoftheducttopreventanimals

fromenteringthedehumidierducting.

Figure4.6Outdoorairinletdesign

A.Rectangularducting

B.Roundducting

C.Wirenetting

4.5.3Ductforwetairoutlet

Thematerialforthewetairductmustwithstandcorrosionandtemperaturesofupto100°C.Thewetair

ductingmustalwaysbeinsulatedifthereisariskofcondensation.Thewetairleavingthedehumidierwill

easilycausecondensationontheinsideoftheductwallsduetothehighmoisturecontent.

Horizontalductsmustbeinstalledslopingdownwards(awayfromthedehumidier)todrainawaypossible

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

lowpointsintheducttopreventwateraccumulation.

Attachawirenetwithameshwidthofapproximately10mmintheouterendoftheducttopreventanimals

fromenteringthedehumidierducting.

Figure4.7Wetairoutletdesign

A.Horizontalwetairoutlet

B.Verticalwetairoutlet

C.Wirenetting

D.Downwardslope

E.Condensatedrainage

12Installation190TGB-1035-H1604

DehumidierML420-MLT1400

4.6PrecautionarymeasuresforunitswithLIdesiccantrotor

ThestandarddeliveryisMuntershighperformancedesiccantrotorHPS(HighPerformanceSilicagel).

IfthedehumidierisdeliveredwithanLIrotor(lithiumchloride)itisimportantthattherotordoesnot

becomeloadedwithmoisturewhenthedehumidierisoff.

NOTE!Makesurethatnoairpassingthroughtherotorhasarelativehumiditygreaterthan80%.

Itisrecommendedtoinstallclosingdampersintheprocessandreactivationairinletstoavoidthatairwith

highrelativehumidityisdrawnthroughtherotorandintotheroom.

Thisisparticularlyimportantwhentheprocessairisdrawnfromoutdoors,orwhenthesystemhasbeen

ttedwithapre-cooler.

4.7Electricalconnections

W W

W

ARNING! ARNING!

ARNING!

Allelectricalequipmentconnectionsmustbecarriedoutinaccordancewithlocalregulationsandbyqualied

personnel.Riskofelectricalshock.

W W

W

ARNING! ARNING!

ARNING!

Theunitmustneverbeconnectedtoavoltageorfrequencyotherthanthatforwhichitwasdesigned.Refertothe

unitidenticationplate.

Eachunitissuppliedcompletewithalltheinternalwiringinstalledandconguredinaccordancewiththe

speciedvoltageandfrequencyontheidenticationplate.

NOTE!Thesupplyvoltagemustnotdifferfromthespeciedoperatingvoltagebymorethan+/-10%.

Forconnectiondetails,seetheidenticationplateandthewiringdiagramorsection9.3,Technicaldata.

4.8Externalhumiditysensor

ML-seriesdehumidiersarewiredsothatwhentheunitissettoAUTOmatic,itcanbecontrolledfrom

anexternallymountedhumiditysensor.

Allmodelshaveatwo-stageheater,andcanbecontrolledbyatwo-stagehumiditysensor.Thismethodis

moreefcientandallowsformoreaccuratedehumidicationcontrol.

Theelectricalconnectionsaremadeatterminalsintheelectricalcontrolpanel.Forwiringandconnection

details,seethewiringdiagram.

NOTE!Wherenohumiditysensorisconnectedtotheunit,thedehumidierwillbeoperatingatmaximumoutput

foraslongastheunitisswitchedon.

Aroomhumiditysensoristobemounted1-1.5mabovetheoor.Itmustbepositionedsothatitisnot

directlyexposedtodryairfromtheunitortohumidairowinginthroughopeningdoors.Positionitaway

fromheatsourcesanddirectsunlight.

■Thehumiditysensorconnectingcableshouldhaveaconductorareaofnotlessthan

0,75mm

2

andmusthaveaninsulationresistanceratinginexcessof500VAC.

■ThehumiditysensormustbedesignedsothatthecontactscloseonarisingRHtocompletethecontrol

circuitandstartthedehumidier.

190TGB-1035-H1604Installation13

DehumidierML420-MLT1400

■Voltagedropscanoccurwhenusingexcessivelylongcables.

Ifthevoltageacrosstheterminalsusedforconnectingthehumiditysensorislessthan20VAC,aseparate

relaycontrolledbythehumiditysensormustbeused.

4.9Gasreactivation(ML1100unitsonly)

Forfurtherinformationoninstallation,start-upandmaintenanceofgasburners,seeappendixaboutgas

reactivationprovidedwiththeunit.

14Installation190TGB-1035-H1604

DehumidierML420-MLT1400

5Commissioning

TheML420-MLT1400dehumidiershaveseveralstandardfunctionsthatneedtobesetbeforeinitial

start-up.Someofthefunctionsrequireconnectiontoexternalequipment.

Somefeaturesrequireconnectionofexternalequipment.Forwiringdetails,seethewiringdiagram.

5.1Settingsbeforestart-up

5.1.1Continuousprocessairfanoperation

Standardsettingsautomaticallyactivatetheprocessairfanonlywhendehumidicationisrequired.

However,continuousprocessairowcanbedesirableevenwhendehumidicationisnotrequired.

Continuousprocessairowcanbeset,seethewiringdiagram.

5.1.2Single-stagehumiditysensor

NOTE!Whennohumiditysensorisconnected,thedehumidierwillrunatmaximumeffectcontinuously.

Ifasingle-stagehumiditysensoristted,thiswillswitchthedehumidieronandoff.Asingle-stage

humiditysensorisconnectedaccordingtothewiringdiagram.

Tomaintainaircirculation,preselectcontinuousoperationoftheprocessairfaneventhough

dehumidicationisnotrequired.Forfurtherinformation,seesection5.1.1,Continuousprocessairfanoperation.

5.1.3Two-stagehumiditysensor

NOTE!Whennohumiditysensorisconnected,thedehumidierwillrunatmaximumeffectcontinuously.

Ifatwo-stagehumiditysensorisconnected,thiswillcontrolthereactivationheaterintwostages.The

reactivationpoweriscontrolledonthebasisofthehumiditysensorreadingandthesetpoint.Atwo-stage

humiditysensorisconnectedaccordingtothewiringdiagram.

Tomaintainaircirculation,preselectcontinuousoperationoftheprocessairfaneventhough

dehumidicationisnotrequired.Forfurtherinformation,seesection5.1.1,Continuousprocessairfanoperation.

5.1.4Remotefaultindication

ThePCBdisplaycanbeusedforageneralindicationofthefollowingfaultsonthedehumidier:

■Processairfan

■Reactivationairfan

■Drivemotor

■Heater

■Auxiliaryequipmentinput

■Rotorhasstopped(ifthisoptionisinstalled)

■Blockedprocessairlter(ifthisoptionisinstalled)

■Blockedreactivationairlter(ifthisoptionisinstalled)

190TGB-1035-H1604Commissioning15

DehumidierML420-MLT1400

5.2Pre-startchecks

W 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.Checktherotationdirectionofthefanimpellerafterconnectiontothepowersupply.Openthefront

panelofthedehumidierandtakeouttheprocesslter.Startthedehumidierandcheckthatthefan

impellerisrotating.Switchoffthedehumidierandwatchthefanimpellerjustbeforeitstopsrotating.

Checkthatitisrotatingclockwise.

7.Ifanexternalhumiditysensorisused,checkthatthesensoriscorrectlypositionedintheroomandis

correctlyconnectedtotheunit,seesection4.8,Externalhumiditysensor.

8.Settheprocessandreactivationairowdamperstothefullyopenposition.

16Commissioning190TGB-1035-H1604

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