Alfa level M3 User manual

InstructionManual-PlateHeatExchangers
M3,M6,M10,TS6,T2,T5,T8,TL3,TL6
3490010216-EN2014-11
Originalmanual
EN

Tableofcontents
Description...................................................................................................6
Components............................................................................................6
NamePlate..............................................................................................8
Function.................................................................................................9
Multi-pass...............................................................................................10
Identicationofplateside.............................................................................10
Installation...................................................................................................11
Beforeinstallation......................................................................................11
Requirements...........................................................................................11
Lifting.....................................................................................................13
Raising...................................................................................................13
Operation....................................................................................................15
Start-up..................................................................................................15
Unitinoperation........................................................................................17
Shut-down...............................................................................................17
Maintenance.................................................................................................18
Cleaning–Non-productside.........................................................................18
Opening..................................................................................................20
Manualcleaningofopenedunits.....................................................................24
Closing...................................................................................................26
Pressuretestaftermaintenance.....................................................................28
Regasketing.............................................................................................29
HowtocontactAlfaLaval
Contactdetailsforallcountriesare
continuallyupdatedonourwebsite.
Pleasevisitwww.alfalaval.comtoaccesstheinformationdirectly.
©AlfaLavalCorporateAB
ThisdocumentanditscontentsisownedbyAlfaLavalCorporateABandprotectedbylawsgoverningintellectualpropertyand
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extentofthelaw,includingtheseekingofcriminalprosecution.
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Preface
Preface
Thismanualprovidesinformationneededtoinstall,operate
andcarryoutmaintenanceofthePlateHeatExchanger
(PHE).
Safetyconsiderations
ThePlateHeatExchangershallbeusedandmaintained
inaccordancewithAlfaLaval’sinstructionsinthismanual.
FaultyhandlingofthePlateHeatExchangermayresult
inseriousconsequenceswithinjuriesonpersonsand/or
propertydamage.AlfaLavalwillnotacceptresponsibility
foranydamageorinjuryresultedfromnotfollowingthe
instructionsinthismanual.
ThePlateHeatExchangershallbeusedinaccordance
withthespeciedcongurationofmaterial,mediatypes,
temperaturesandpressureforthespecicPlateHeat
Exchanger.
Thefollowingmodelsarecoveredinthismanual:
•M3
•M6
•M10
•TS6
•T2
•T5
•T8
•TL3
•TL6
Priorknowledge
ThePHEshallbeoperatedbypersonsthathavestudied
theinstructionsinthismanualandhaveknowledgeof
theprocess.Italsoconsidersknowledgeofprecautions
regardingmediatype,pressures,temperaturesinthePHE
aswellasspecicprecautionsrequiredoftheprocess.
MaintenanceandinstallationofthePHEshallbedoneby
personsthathaveknowledgeandauthorizationaccording
tothelocalregulations.Thismayincludeactionssuchas
piping,weldingandotherkindofmaintenance.
Maintenanceactionsnotdescribedinthismanualplease
contactAlfaLavalrepresentativeforadvice.
Denitionsofexpressions
Warning!
Typeofhazard
WARNINGindicatesapotentiallyhazardous
situationthat,ifnotavoided,couldresultindeathor
seriousinjury.
Caution!
Typeofhazard
CAUTIONindicatesapotentiallyhazardous
situationthat,ifnotavoided,mayresultinminor
ormoderateinjury.
Note!
NOTEindicatesapotentiallyhazardoussituation
that,ifnotavoided,mayresultinpropertydamage.
PHEdrawings
PHEdrawingsmentionedinthemanualisthedrawings
includedinthedeliveryofthePlateHeatExchanger.
Warrantyconditions
Thewarrantyconditionsareusuallyincludedinthesigned
salescontractpriortotheorderofthedeliveredPHE.
Alternativelythewarrantyconditionsisincludedinthesales
offerdocumentationorwithareferencetothedocument
specifyingthevalidconditions.Iffaultsoccurduringthe
speciedwarrantyperiodalwaysconsultyourlocalAlfa
LavalRepresentativeforadvice.
ReportthedatewhenthePlateHeatExchangerhasbeen
takeninoperationtothelocalAlfaLavalRepresentative.
Advice
AlwaysconsultyourlocalAlfaLavalRepresentativefor
adviceon
•Newplatepackdimensionsifyouintendtochange
numberofplates
•Selectionofgasketmaterialifoperatingtemperatures
andpressuresarepermanentlychanged,orifanother
mediumistobeprocessedinthePHE.
StorageofthePHE
AlfaLavaldeliversthePHEreadytobeputinserviceupon
arrival,ifnothingelsehasbeenagreed.Althoughkeepthe
PHEinthepackingboxuntiltheinstallation.
Storageforlongerperiodsoftime,onemonthorlonger,
certainprecautionsshouldmadetoavoidunnecessary
damagesonthePHE.
Note!
AlfaLavalanditsrepresentativesreservetheright
toinspectthestoragespaceand/orequipment
whenevernecessaryuntilexpiryofthewarranty
periodstipulatedinthecontract.Noticationhasto
begiven10dayspriortodateofinspection.
IfanyuncertaintyappearaboutstorageofthePHEconsult
anAlfaLavalRepresentative.
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Preface
Storageinpackingbox
IfstorageafterdeliveryofthePHEisknowninadvance,
informAlfaLavalwhenorderingthePHEtoensurethatit
willbeproperlypreparedforstoragebeforepacking.
Indoorstorage
•Storeinsidearoomwiththetemperaturebetween15
and20°C(60-70°F)andhumidityaround70%.For
outdoorstorageread“Outdoorstorage”onthispage.
•T opreventdamagetothegaskets,thereshouldnotbe
anyozone-producingequipmentintheroomsuchas
electricmotorsorweldingequipment.
•T opreventdamagetothegaskets,donotstoreorganic
solventsoracidsintheroomandavoiddirectsunlight,
intensiveheatradiationorultravioletradiation.
•Thetighteningboltsshouldbewellcoveredwithlight
greasecoating.
Outdoorstorage
IfthePHEhastobestoredoutdoors,alltheprecautions
mentionedinthesection“Indoorstorage”onthispage
shouldbetaken.Also,protectionagainstclimateisvery
important.
ThestoredPHEshallbevisuallycheckedeverythird
month.Thecheckincludes:
•Greasingofthetighteningbolts
•Metalportcovers
•Protectionoftheplatepackandgaskets
Takenoutofservice
If,foranyreason,thePHEisshutdownandtakenoutof
serviceforalongperiodoftime,followthesameadvice
asintheprevioussection”Indoorstorage”onthispage.
Althoughbeforestoragefollowingactionshastobedone.
•Checkthemeasurementoftheplatepack(measure
betweenframeandpressureplate,Adimension).
•DrainbothmediasidesofthePHE
•Dependingonthemedia,thePHEshouldberinsed
andthendried.
•Theconnectionshouldbecoveredifthepipingsystem
isnotconnected.Useaplasticorplywoodcoverfor
theconnection.
•Covertheplatepackwithnon-transparentplasticlm.
Installationafterlong-termstorage
IncaseswhenthePHEhasbeentakenoutofservicefor
anextensiveperiodoftime,i.e.longerthanoneyear,the
riskofleakagewhenstartingupincreases.Toavoidthis
problemitisrecommendedtoletthegasketrubberrestand
regainmostofitselasticity.
1.IfthePHEisnotinposition,followtheinstructions
“Installation”onpage11.
2.Notethemeasurementbetweenframeandpressure
plate(Adimension).
3.Removefeetattachedtothepressureplate.
4.Loosenthetighteningbolts.Followtheinstructions
“Opening”onpage20.OpenthePHEuntilthemeasure
is1.25A.
5.LeavethePHEbetween24-48hours,thelongerthe
better,forgasketstorelax.
6.Re-tightenaccordingtotheinstructions“Closing”on
page26.
7.AlfaLavalrecommendsahydraulictesttobecarriedout.
Themedia,usuallywater,shouldbeenteredatintervals
toavoidsuddenshockstothePHE.Itisrecommended
totestuptotheDesignPressure,refertoPHEdrawing.
Environmentalcompliance
AlfaLavalendeavourstoperformitsownoperations
ascleanlyandefcientlyaspossible,andtotake
environmentalaspectsintoconsiderationwhendeveloping,
designing,manufacturing,servicingandmarketingits
products.
Unpacking
Packingmaterialconsistsofwood,plastics,cardboard
boxesand,insomecases,metalstraps.
•Woodandcardboardboxescanbereused,recycledor
usedforenergyrecovery.
•Plasticsshouldberecycledorburntatalicensedwaste
incinerationplant.
•Metalstrapsshouldbesentformaterialrecycling.
Maintenance
•Allmetalpartsshouldbesentformaterialrecycling.
•Oilandallnon-metalwearpartsmustbetakencareof
inagreementwithlocalregulations.
Scrapping
Atendofuse,theequipmentshallberecycledaccording
torelevant,localregulations.Besidestheequipmentitself,
anyhazardousresiduesfromtheprocessliquidmustbe
consideredanddealtwithinapropermanner.Whenin
doubt,orinabsenceoflocalregulations,pleasecontactthe
localAlfaLavalsalescompany.
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Description
Description
Components
8
7
35
6
24
1
Maincomponents
1FrameplateFixedplatewithvariousnumberofportholesforconnectionofthepipingsystem.The
carryingandguidingbarisattachedtotheframeplate.
2CarryingbarCarriestheplatepackandthepressureplate.
3PlatepackHeatistransferredfromonemediatotheotherthroughtheplates.Theplatepack
consistsofchannelplates,endplates,gasketsandinsomecasestransitionplates.
ThemeasureoftheplatepackistheAdimension,i.ethemeasurementbetweenframe
andpressureplate.RefertoPHEdrawing.
4PressureplateMoveableplatethatcancontainvariousnumberofportholesforconnectionofthe
pipingsystem.
5GuidingbarKeepsthechannelplates,connectionplatesandthepressureplateallignedattheir
lowerend.
6SupportingcolumnSupportscarryingandguidingbars.
ForsomesmallerPHEmodelsnosupportingcolumnisused.
7TighteningboltsCompresstheplatepackbetweentheframeandpressureplate.
Thereareusuallyfourtighteningboltsused,insomecasessix,theseareusedtoopen
andclosethePHE.
Remainingboltsareusedaslockingbolts.
8PortholesPortholesthroughtheframeplateallowsthemediatoenterintoorexitfromthePlate
HeatExchanger.
Differenttypesofconnectionscanbeusedtoconnectthepipingsystemtotheapparatus.
Theportholesmaybeprotectedagainstcorrosionbymetalorrubberlinings.
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Description
Connections
PipeconnectionsThePlateHeatExchangercanbeequippedwithofxedpipeconnectionfordifferent
typesofattachmentssuchaspipesforwelding,threadedpipesorgroovedpipes.
StudboltsThreadedstudboltsaroundtheportholessecuretheangeconnectionstotheapparatus.
SquaredlooseangeTheSquaredlooseangeisaspecialangesuppliedbyAlfaLavaltobeusedwiththe
customerspipingandisattachedwithfourstudbolts.
Optionalcomponents
FootGivesstabilityandisusedtosecurethePHEwithboltstothefoundation.
Feetisanoptionalfeature.
ProtectionsheetsCovertheplatepackandprotectagainstleakagehotoraggressiveuidsandthehot
platepack.
BoltprotectionPlastictubesthatprotectsthethreadsofthetighteningbolts.
InsulationForapplicationwherethePHEsurfacewillbehotorcoldinsulationcanbeused.
EarthinglugAnearthingconnectionisusedtoeliminatetheriskofstaticelectricitybuildingupin
theequipment.
NozzlecoverProtectiontoavoidparticlestoenterintothePHEduringtransportation.
DriptrayDependingonthetypeofuidinthePHEandthetypeofinstallation,adriptray(drainage
box)maybenecessarytoavoidinjurytopersonnelanddamagetoequipment.
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Description
NamePlate
Onthenameplatethetypeofunit,manufacturingnumberandmanufacturingyearcanbe
found.Pressurevesseldetailsinaccordancewiththeapplicablepressurevesselcodearealso
given.Thenameplateisxedtotheframeplate,mostcommon,orthepressureplate.The
nameplatecanbeasteelplateorastickerlabel.
Warning!
Foreachunit,themechanicaldesignpressuresandtemperaturesaremarkedonthe
nameplate.Thesemustnotbeexceeded.
Caution!
AvoidaggressivechemicalsforcleaningthePHEwhenstickerlabelisused.
Themechanicaldesignpressureandthedesigntemperatureasgivenonthenameplateare
thevaluestowhichtheplateheatexchangerisapprovedtothepressurevesselcodein
question.Themechanicaldesigntemperaturemayexceedtheoperatingtemperatureforwhich
thegasketshavebeenselectedtoreachaitslifetime.Iftheoperatingtemperaturesasspecied
ontheassemblydrawingaretobeexceededthesuppliershouldbeconsulted.
1.Spaceforlogotype.
2.Openspace.
3.Websiteforservice.
4.Drawingofpossiblelocationsofconnections.For3Aunitslocationof3Atag.
5.Spaceformarkofapproval.
6.Warning,readmanual.
7.Dateofpressuretest.
8.Maximumoperatingtemperatures.
9.Testpressure.
10.Maxpermissibleoperatingtemperatures.
11.Maxpermissibleoperatingpressures.
12.Decisivevolumeorvolumeforeachuid.
13.Locationsofconnectionsforeachuid.
14.Decisiveuidgroup.
15.Yearofmanufacture.
16.Serialnumber.
17.Type.
18.Manufacturer’sname.
S e rvic e
Ye a r
Te s t p res s . P T
Flu id g ro u p
In le t Ou tle t
De s ig n p re s s . P S
De s ig n te m p . TS
Vo lu m e V
Ma n u fa c t u re r
S e ria l No .
Typ e
Ma x . o p . te m p .
Te s t p re s s u re d a te
WARNING
1
2
3
4
18
17
16
15
14
13
12
11
10
9
8
7
6
5
YEAROFMANUFACTURING:
TYPE:
INLET→ OUTLET
FLUIDGROUP
VOLUME
MAX. OP. TEMP.
DES. PRESS.
DES. TEMP.
TESTPRESS.
→ →
V:
PS:
TS:
PT:
SERIALNO:
PRESSURE TESTED
FORSERVICE:
MANUFACTURER:
1
18
15
16
13
14
12
8
11
10
9
6
5
4
17
7
3
Figure1.Metallicnameplateontheleftandlabelnameplateontheright.
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Description
Function
ThePlateHeatExchanger(PHE)consistsofapackofcorrugatedmetalplateswithportholes
forinputandoutputforthetwoseparateuids.Theheattransferbetweenthetwouidswilltake
placethroughtheplates.
Theplatepackisassembledbetweenaframeplateandapressureplateandcompressedby
tighteningbolts.Theplatesarettedwithagasketwhichsealsthechannelanddirectsthe
uidsintoalternatechannels.Theplatecorrugationpromotesuidturbulenceandsupportsthe
platesagainstdifferentialpressure.
Figure2.PrincipleofPlatepackarrangement.
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Description
Multi-pass
Multi-passcanbecreatedbyusingturningplates,with1,2or3unholedports.Themain
purposeistochangetheowdirectionofoneorbothuids.
Forsomeunitspartitionplateisrequiredtosupporttheunholedportsintheturningplates.Also
transitionplateneedtobeaddedinthepackagetopreventmediatogetincontactwiththe
partitionorpressureplate.
Exampleofuseformulti-passcanbeinprocessesthatrequireslongerheatingperiodsifthe
mediarequiresaslowerheating.
Channel plates
Cold in
Hot out
Hot in
Cold out
End Plate I
End Plate II
Channel plates Transition plate
Turning Plate
Figure3.Exampleofmulti-passsetup.
Identicationofplateside
TheAsideoftheplateisidentiedbythestampwiththeletterAorthemodelname,insome
casesboth,atthetopoftheplate(refertogure).
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Installation
Installation
Beforeinstallation
Toconsiderbeforeinstallation
•Beforeconnectinganypiping,makesureallforeignobjectshavebeenushedoutofthe
pipingsystemthatshouldbeconnectedtothePHE.
•Beforestart-upcheckthatalltighteningboltsarermlytightenedandthatthecorrect
measurementsoftheplatepack,refertoPHEdrawing.
•WhenconnectingthepipingsystemmakesurethepipesdonotsubjectthePHEtostress
orstrain.
•T oavoidwaterhammer,donotusefast-closingvalves.
•MakesurethatnoairremainswithinthePHE.
•Safetyvalvesshallbeinstalledaccordingtocurrentpressurevesselregulations.
•Itisrecommendedthatprotectivesheetsareusedtocovertheplatepack.Protectagainst
leakageofhotoraggressiveuidsandthehotplatepack
•IfthePHEsurfacetemperatureisexpectedtobehotorcoldtakeprotectiveactions,such
asinsulatethePHE,toavoidriskforpersonnelinjuries.Ensurethatrequiredactionare
accordingtolocalregulation.
•Foreachmodel,designpressuresandtemperaturesaremarkedonthenameplate.These
shallnotbeexceeded.
Requirements
0000000
0000000
0000
0000
0000
00
00
00
00
00
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0
0
B
Space
Aminimumfreespaceisneededforliftingplatesinandout.RefertothedeliveredPHEdrawing.
Foundation
Installonaatfoundationgivingenoughsupporttotheframe.
Elbow
TomakeiteasiertodisconnectthePHE,anelbowshouldbettedtotheconnectioninthe
pressureplate,directedupwardsorsideways,andwithanotherangelocatedjustoutsidethe
contourofthePlateHeatExchanger.
Shut-offvalve
TobeabletoopenthePHE,shut-offvalvesshouldbeprovidedinallconnections.
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Installation
Connection
Differenttypesofconnectionscanbeusedtoconnectthepipingsystemtotheapparatus.
Flangedconnectionscanbeattachedwitheitherpinboltsorheadedbolts.
Makesurethepipeconnectionsaresecurelyheldwhenworkingonthepipings.
Caution!
Turningoftheconnectionswilldamagethegasketsontheendplateandcauseleakage.
Note!
Usingheadedboltsrequirecarefulmeasuringtoensurethattheboltsgetthecorrect
engagedthreadedlengthintotheFrameplateandtheminimumengagementlength
(min)arestatedinthePHEdrawing.Themaximumengagementthreadedlength(max)
intheFrameplateislimited,refertothePHEdrawing.
TheengagedthreadedlengthmustbemaintainedwithinthelimitsforthetightenedPHE.
max
min
Caution!
Failingtoachievecorrectengagedthreadedlengthforheadedboltmayresultin
leakage,damagetotheframeplateandinjurytopersonnel
Connectionsinthepressureplate
ItisimportantthattheplatepackhasbeentightenedtothecorrectdimensionA(checkagainst
PHEdrawing)beforethepipingsystemisconnected.
Driptray(Optional)
DependingonthetypeofuidinthePHEandthetypeofinstallation,adriptray(drainagebox)
maybenecessarytoavoidinjurytopersonnelanddamagetoequipment.
Note!
PutthedriptrayinplacebeforepositioningthePHE.
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Installation
Lifting
StrapsshouldbeusedwhenliftingthePHE.Placestrapsaccordingtothepicture.
Warning!
Neverliftbytheconnectionsorthestudsaroundthem.
LiftingTS-6
Raising
ThisinstructionisvalidwhenraisingthePHEafterdeliveryfromAlfaLaval.Onlyuseastrap
approvedfortheweightofthePHE.Followtheprincipleoftheinstructionbelow.
Caution!
ThestrapsshallbelongenoughtobeabletorotatethePHEwithoutobstructions.
Especiallyconsiderthespaceforthesupportcolumn.
Step1
Placetwotimberbeamsontheoor.
Step2
LiftthePHEoffthepalletusinge.g.straps
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Installation
Step3
PlacethePHEonthetimberbeams.
Step4
Placestrapsaroundoneboltoneachside.
Step5
LiftthePHEoffthetimberbeams.
Step6
LowerthePHEintoahorizontalpositionandplaceitontheoor.
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Operation
Operation
Start-up
Duringstart-upcheckthatnovisibleleakagesappearfromplatepack,valvesorpipingsystem.
Caution!
BeforepressurizingthePHEitisimportanttoensurethatthetemperatureofthePHEis
withinthetemperaturerangestatedinthePHEdrawing.
Caution!
IfthetemperatureofthePHEisbelowtheminimumtemperatureforthegasketspriorto
theserviceitisrecommendedtoheatupthePHEabovethislimittoavoidcoldleakage.
Note!
Ifseveralpumpsareincludedinthesystem,makesureyouknowwhichoneshouldbe
activatedrst.
Centrifugalpumpsmustbestartedagainstclosedvalvesandvalvesmustbeoperatedas
smoothlyaspossible.
Donotrunpumpstemporarilyemptyonthesuctionside.
Note!
Adjustmentsofowratesshouldbemadeslowlyinordertoavoidtheriskofpressure
surge(waterhammer).
Waterhammerisashortlastingpressurepeakthatcanappearduringstart-upor
shut-downofasystem,causingliquidstotravelalongapipeasawaveatthespeedof
sound.Thiscancauseconsiderabledamagetotheequipment.
Step1
Beforestart-upcheckthatalltighteningboltsarermlytightened
andthatthedimensionAiscorrect,refertoPHEdrawing
A
Step2
Checkthatthevalveisclosedbetweenthepumpandtheunit
controllingthesystemowratetoavoidpressuresurge.
Step3
Ifthereisaventvalveinstalledattheexit,makesureitisfully
open.
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Operation
Step4
Increasetheowrateslowly.
Step5
Opentheairventandstartthepump.
A
Step6
Openthevalveslowly.
Note!
AvoidrapidtemperaturechangesinthePHE.With
mediatemperaturesover100°C,slowlyincreasethe
temperaturepreferablyatleastforonehour.
Step7
Whenallairisexpelled,closetheairvent.
Step8
RepeatStep1–Step7forthesecondmedia.
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Operation
Unitinoperation
Adjustmentsofowratesshouldbemadeslowlyinordertoprotectthesystemagainstsudden
andextremevariationsoftemperatureandpressure.
Duringoperation,checkthatmediatemperaturesandpressuresarewithinthelimitsstatedon
thenameplateandPHE-drawing.
Warning!
IncaseoffailuresthatendangersafetyoperationturnofftheowtothePHEinorderto
decreasethepressureandstopheattransfer.
Shut-down
Note!
Ifseveralpumpsareincludedinthesystem,makesureyouknowwhichoneshouldbe
stoppedrst.
Step1
Slowlyclosethevalvecontrollingtheowrateofthepumpyou
areabouttostop.
Step2
Whenthevalveisclosed,stopthepump.
Step3
RepeatStep1–Step2fortheothersideforthesecondmedia.
Step4
IfthePHEisshutdownforseveraldaysorlonger,itshould
bedrained.Drainingshouldalsobedoneiftheprocessis
shutdownandtheambienttemperatureisbelowfreezing
temperatureofthemedia.Dependingonthemediaprocessed,
itisalsorecommendedtorinseanddrythePHEplatesand
connections.
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Maintenance
Maintenance
TokeepthePHEingoodconditionregularmaintenanceofthecomponentisrequired.Itis
recommendedtorecordmaintenanceofthePHE.
Theplatesneedstobecleanedonaregularbasis.Thefrequencydependsonseveralof
factorssuchastypeofmediaandtemperatures.
Differentmethodscanbeusedtoperformcleaning.Referto“Cleaning–Non-productside”on
page18orareconditioningatanAlfaLavalservicecenter.
AfteralongertimeofuseitcanberequiredtoregasketingthePHEbyexchangingthegaskets.
Referto“Regasketing”onpage29.
Othermaintenancethatshouldbeperformedregulary:
•Keepcarryingbarandguidingbarcleanandgrease.
•Keepthetighteningboltscleanedandgreased.
Cleaning–Non-productside
TheCleaning-In-Place(CIP)equipmentpermitscleaningofthePHEwithoutopeningit.The
purposeofcleaningwithCIPareasfollows:
•Cleaningoffoulinganddescalingoflimedeposits
•Passivationofcleanedsurfacestoreducesusceptibilitytocorrosion
•Neutralizationofcleaningliquidsbeforedraining.
FollowtheinstructionsoftheCIPequipment.
Warning!
Useproperprotectiveequipment,suchassafetyboots,safetyglovesandeyeprotection,
whenusingthecleaningagents.
Warning!
Corrosivecleaningliquids.Cancauseseriousinjuriestoskinandeye!
CIPequipment
ContactAlfaLavalsalesrepresentativeforsizeofCIPequipment.
Caution!
Theresidualsafteracleaningprocedureshallbehandledaccordingtothelocal
envionmentalregulations.Afterneutralizationmostcleaningsolutionsmaybedrained
tothewastewatersystemundertheconditionthatthefoulingdepositsdonotcontain
heavymetals,othertoxicorenvironmentallydangerouscompounds.Itisrecommended
theneutralizedchemicalstobeanalysedforanytypeofhazardouscompoundsthat
wereremovedfromthesystempriortodisposal.
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Maintenance
Cleaningliquids
LiquidsDescription
AlfaCausAstrongalkalineliquid,forremovingpaint,fat,oiland
biologicaldeposits.
AlfaPhosAnacidcleaningliquidforremovingmetallicoxides,rust,
limeandotherinorganicscale.Containsrepassivation
inhibitor
AlfaNeutraAstrongalkalineliquidforneutralizationofAlfaPhosbefore
drainage.
AlfaP-NeutraForneutralizationofAlfaP-Scale.
AlfaP-ScaleAnacidicpowdercleanerforremovalofprimarycarbonate
scalebutalsootherinorganicscale.
AlfaDescalentAnon-hazardousacidiccleaningagentforremovalof
inorganicscale.
AlfaDegreaserAnon-hazardouscleaningagentforremovalofoil,grease
orwaxdeposits.Additionallypreventfoamingwhenusing
AlpaconDescaler.
AlfaAddAlfaAddisaneutralcleaningstrengthenerdesignedtobe
usedwithAlfaPhos,AlfaCausandAlfaP-Scale.0.5–1
vol%isaddedtothetotaldilutedcleaningsolutionto
providebettercleaningresultsonoilyandfattysurfaces
andwherebiologicalgrowthoccurs.AlfaAddalsoreduces
anyfoaming.
IfCIPcannotbedone,cleaningmustbedonemanually.RefertoManualcleaningofopened
unitsonpage24.
Chlorineasagrowthinhibitor
Chlorine,commonlyusedasgrowthinhibitorincoolingwatersystems,reducesthecorrosion
resistanceofstainlesssteels(includinghighalloyslikeAlloy254SMO).
Chlorineweakenstheprotectionlayerofthesesteelsmakingthemmoresusceptibletocorrosion
attacksthentheyotherwiseshouldbe.Itisamatteroftimeofexposureandconcentration.
Ineverycasewherechlorinationofnon-titaniumequipmentcannotbeavoided,yourlocal
representativemustbeconsulted.
Waterofmorethan300ppmClionsmaynotbeusedforpreparationofcleaningsolutions.
Caution!
Ensurethatthehandlingofresidualsafterusingchlorinesfollowthelocalenvionmental
regulations.
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3490010217EN2014-11InstructionManual-PlateHeatExchangers19
EN

Maintenance
Opening
ToperformmanualcleaningitisrequiredtoopenthePHEtocleantheplates.
Note!
BeforeopeningthePHEcheckthewarrantyconditions.Ifinanydoubt,contactanAlfa
Lavalsalesrepresentative.Referto“Warrantyconditions”onpage4.
Warning!
IfthePlateHeatExchangerishot,waituntilithascooleddowntoabout40°C(104°F).
Warning!
Ifnecessary,useproperprotectiveequipment,suchassafetyboots,safetyglovesand
eyeprotection,dependingontypeofmediainthePHE.
Boltconguration
TheboltcongurationofthePHEvariesbetweendifferentmodels.Themajorforceofthe
platepackageisholdbythetighteningbolts(TB).TodistibutetheforceevenlyovertheFrame
andPressureplatelockingbolts(LB)areusedaswell.Thelockingboltscanbeshorterand
havesmallerdimensions.Intheopeningandclosingprocedureitisimportanttoidentifythe
tighteningbolts(TB)andthelockingbolts(LB).Refertopicturebelow.
TB TB
TB TB
LB LB
LB
LB
Step1
ShutdownthePHE.
Step2
ClosethevalvesandisolatethePHEfromtherestofthesystem.
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