service manual - citiz
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SERV I C E MA NUA LC I T I Z CO F F E E M A CH I N E S
Citiz EF483/484
Citiz&milk EF485/486
Citiz&Co EF487/488
Version1.2en
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Citizservicemanual2
CONT EN T S
1 GeneralSafetyNotes........................................................................................6
2 Modeloverview ...................................................................................................7
2.1 Modelrange .......................................................................................................7
2.2 Coreunitversions ..............................................................................................8
3 MainComponents ..............................................................................................9
3.1 Overviewcoreunit,Drange ..........................................................................93.1.1 Interiorviewcoreunit,Drange...........................................................10
3.2 Overviewcoreunit,Crange ........................................................................113.2.1 Interiorviewcoreunit,Crange...........................................................12
3.3 OverviewmodelCitiz .....................................................................................13
3.4 OverviewmodelCitiz&milk ..........................................................................143.4.1 OverviewmilkfrotherAERO3...............................................................15
3.5 OverviewmodelCitiz&Co ............................................................................16
3.6 FluidSystem....................................................................................................173.6.1 Watercircuitdiagramofcoreunit(allCitizversions) ..............................173.6.2 WatercircuitofmodelsCitiz/Citiz&milk...............................................183.6.3 WatercircuitofmodelCitiz&Co ............................................................19
4 TechnicalData ..................................................................................................20
4.1 RatingPlates....................................................................................................204.1.1 Examplesofbrandspecificratingplates ................................................204.1.2 Ratingplatedetails .................................................................................234.1.3 Ratingplateofmilkfrother(modelCitiz&milk) ......................................24
4.2 Summaryoftechnicaldata...............................................................................254.2.1 Technicaldataofcoffeemachines .........................................................254.2.2 Technicaldataofmilkfrother(modelCitiz&milk)..................................274.2.3 DimensionsandweightmodelCitiz ......................................................284.2.4 DimensionsandweightmodelCitiz&milk ...........................................294.2.5 Dimensionsandweightmilkfrother ......................................................294.2.6 DimensionsandweightmodelCitiz&Co.............................................30
5 Operation ............................................................................................................31
5.1 Generalinformation..........................................................................................31
5.2 Statusindication...............................................................................................315.2.1 Statusindicationofcoffeemachine ........................................................315.2.2 StatusindicationofmilkfrotherAERO3..................................................33
5.3 Machinemodes................................................................................................345.3.1 MachinemodesofCitizcoffeemachines...............................................345.3.2 MachinemodesofmilkfrotherAERO3...................................................35
5.4 Program/resetfilluplevel...............................................................................365.4.1 Programmingthefilluplevel...................................................................365.4.2 Resettingthefilluplevel .........................................................................36
5.5 Emptywatersystem.........................................................................................37
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Citizservicemanual 3
6 Maintenance ...................................................................................................... 38
6.1 Dailymaintenanceandcleaning ...................................................................... 386.1.1 Beforefirstcoffeeoratthestartofday.................................................. 386.1.2 Afterlastcoffeeorattheendofday....................................................... 396.1.3 MilkfrotherofmodelCitiz&milk ............................................................ 40
6.2 Descaling ......................................................................................................... 416.2.1 DescalingprocedureformodelsCitizandCitiz&milk ........................... 416.2.2 DescalingprocedureformodelCitiz&Co.............................................. 45
7 Troubleshooting ............................................................................................... 49
7.1 Checklistforcoffeemachine(allmodels) ....................................................... 49
7.2 Checklistformilkfrother ................................................................................. 51
8 Repairs............................................................................................................... 52
8.1 Safetyinstructions........................................................................................... 52
8.2 Repairandmountingtips ................................................................................. 52
8.3 Toolsandaccessories ..................................................................................... 55
8.4 PlatformdisassemblymodelCitiz.................................................................. 568.4.1 Generaldisassembly .............................................................................. 568.4.2 Replacingwatertankconnector ............................................................. 598.4.3 Replacingmainsswitch .......................................................................... 608.4.4 Replacingpowercord ............................................................................. 628.4.5 Removingcoreunit................................................................................. 64
8.5 PlatformdisassemblymodelCitiz&milk ....................................................... 678.5.1 Generaldisassembly .............................................................................. 678.5.2 Replacingwatertankconnector ............................................................. 718.5.3 Replacingmilkfrotherconnector ............................................................ 738.5.4 Replacingmainsswitch .......................................................................... 748.5.5 Replacingpowercord ............................................................................. 758.5.6 Removingcoreunit................................................................................. 77
8.6 PlatformdisassemblymodelCitiz&Co......................................................... 808.6.1 Generaldisassembly .............................................................................. 808.6.2 Replacingwatertankconnector ............................................................. 848.6.3 Replacingmainsswitch .......................................................................... 858.6.4 Replacingpowercord ............................................................................. 878.6.5 Removingcoreunits ............................................................................... 89
8.7 Disassemblyofcoreunit,Crange................................................................. 918.7.1 Generaldisassembly .............................................................................. 918.7.2 Replacingcompactbrewingunit............................................................. 968.7.3 Replacingpump...................................................................................... 988.7.4 Replacingflowmeter ............................................................................ 1018.7.5 Replacingautomaticprimingdevice(APD) .......................................... 1028.7.6 ReplacingthermoblockwithNTCsensorandfinewirefuse(s) ............ 1048.7.7 Replacingelectroniccontrolboardwithbuttonprints ........................... 107
8.8 Disassemblyofcoreunit,Drange............................................................... 1098.8.1 Generaldisassembly ............................................................................ 1098.8.2 Replacingelectroniccontrolboardwithbuttonprints ........................... 116
8.9 Wiringdiagrams ............................................................................................. 1188.9.1 WiringdiagramsmodelCitiz............................................................... 1188.9.2 WiringdiagramsmodelCitiz&milk,EF 485 /486 ............................. 1248.9.3 WiringdiagramsmodelCitiz&Co,EF487/488 ............................... 128
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9 Functiontests .................................................................................................130
9.1 Safetyinstructions..........................................................................................130
9.2 Requiredequipment.......................................................................................1309.2.1 Overview ...............................................................................................1309.2.2 Pressureadapter ..................................................................................131
9.3 Measureflowrate...........................................................................................132
9.4 Pressureandleakagechecks ........................................................................1339.4.1 Preparations..........................................................................................1349.4.2 Testrun.................................................................................................135
9.5 Measurecoffeetemperature ..........................................................................136
9.6 Milkfrothertests.............................................................................................1389.6.1 Measurehotmilktemperature ..............................................................1389.6.2 Measuremilkfrothratio ........................................................................138
9.7 NTCtemperaturesensorfunctionality............................................................139
9.8 Protectiveearth(PE)continuitytest...............................................................1419.8.1 Whatcoffeemachinehastobetestedandwhen? ...............................1419.8.2 General .................................................................................................1419.8.3 Testsequence ......................................................................................1429.8.4 Whattodoiftheprotectiveearthcontinuitytestfails............................143
9.9 Protectiveinsulationtest ................................................................................1449.9.1 Whatcoffeemachineshavetobetestedandwhen? ...........................1449.9.2 General .................................................................................................1449.9.3 Testsequence ......................................................................................1459.9.4 Whattodoiftheinsulationtestfails .....................................................147
10 ExplosionDrawings......................................................................................148
10.1 ModelCitiz,coreunitDrange(EF483).......................................................148
10.2 ModelCitiz,coreunitCrange(EF484).......................................................149
10.3 ModelCitiz&milk,coreunitDrange(EF485)............................................150
10.4 ModelCitiz&milk,coreunitCrange(EF486)............................................151
10.5 ModelCitiz&Co,coreunitDrange(EF487)..............................................152
10.6 ModelCitiz&Co,coreunitCrange(EF488)..............................................153
11 PartsList ..........................................................................................................154
12Notes .................................................................................................................158
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Citizservicemanual 5
PRE F A CE
Thepurposeofthisservicemanualistoprovidetheservicepersonnelwithallnecessaryinformationwithregardstocorrecthandling,maintenanceandrepairoftheCitizcoffeemachinetypesEF483/484,EF485/486andEF487/488.
Thismanualshouldbeusedbythetechniciansasavaluableaidtoguaranteethepermanentreadinessforuseofthemachines.Inordertotakefulladvantageofallthefunctions,itisabsolutelynecessarytofollowtheinstructionsinthismanual.
ForfastaccesstoinformationdirectlyfromthePCorMACmonitor,this servicemanualisavailableasPDFfileandcanbedownloadedfromtheNespressotechnicalwebsiteunderhttps://business.nespresso.com.
TherequiredutilitysoftwaretoreadPDFfiles(AdobeReader)forPCsandMACcomputerscanbedownloaded(under http://www.adobe.com)forfreepleaseclickthelogo:
CONT EN T U PD A TE S
Version1.2
Chapter"Functiontests":correctionoftheprotectiveinsulationtest(connectionofthetestequipmenttobothneutralandphasepinsinsteadofgroundpin).Seesubtitle"Testsequence"onpage145,steps1till3(connectionofthemeasuringcable).
Servicemanualisavailableinadditionallanguages:French,German,SpanishandItalian
Version1.1
Firstreleasedservicemanualversion,inEnglishonly.
Version1.0
Testversionforproofreading,inEnglishonly.
Pleasekeepthismanualtogetherwiththecorresponding
servicedocumentation.Thiswayyouareassuredtohavethenecessaryinformation.
2PDFversionsofthisservicemanualcanbeselected:
Ahighlycompressedversionwithlowpictureresolutionandsmallfilesize.
Aversioninprintqualitywithhyperlinks,butwithbigfilesize.
Theversionnumberofthisservicemanualisprintedonthelower
rightcornerofthefrontpage.
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Citizservicemanual6
G E N E R A L S A F E T Y N O T E S
1 G EN ERA L S A FE T Y NO T E S
Asanadditionalsafetymeasure,theuseofaresidualcurrentdevice(RCD),alsocalledthegroundfaultcircuitinterrupter(GFCI),intherepaircentreishighlyrecommended.
Riskoffatalelectricalshockandfire!
Mainsvoltageinsidethecoffeemachine.
Unplugappliancebeforecleaning. Nevercleanwetorimmerseplug,cordorapplianceinanyfluid. Disconnectthemainsplugbeforedisassemblytheappliancemust
befreeofvoltage.
Thisdevicedoesnotprotectagainstelectricalshockdue
tocontactwithbothcircuitconductors.
Exampleillustrationsoftypicaldevices.
UseaGFCIwithatriplevelof46mA(USA)resp.aRCDwithatrip
levelof1530mA(Europe).Atriplevelabove30mAprovidesonlyverylimitedprotectionagainstharmfromanelectricshock.
1) RCDprotectedsocketoutlet2) PluginRCDunit
3) GFCIsocket4) PluginGFCI
Dangerofburns!
Hotpartsandwaterunderpressureinsidethecoffeemachine(particularlyinthethermoblock).
Letcoffeemachinecooldownbeforecleaningordisassembly.
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Citizservicemanual 7
M O D E L O V E R V I E W
2 MODE L O V ERV I EW
2.1 Modelrange
WithcoreunitDrange:WithcoreunitCrange:
Eachmodel hasaspecialplatform isavailablein2differentdesigns,dependingonthecoreunitversion(CorDrange).
1) Citiz2) Citiz&milk
3) Citiz&Co
Acoreunitistheactualcoffeemachine,mountedon
aplatform.
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M O D E L O V E R V I E W
2.2 Coreunitversions
Drange CrangeThiscomparisonhelpstoidentifythecoreunitversion.
1) Coffeeoutlet2) Closinghandle
3) Coffeebuttons4) Cupholder
Thereareadditionaldifferencesbetweenthe2versions(cov
ers,wiringetc.)notmentionedinthetable.
Differentcomponents Drange Crange
Coffeeoutlet(1) conturedcoffeeoutlet "flat"coffeeoutlet
Closinghandle(2) chromiumplatedclosinghandle blackclosinghandle
Coffeebuttons(3)arrangedonbothsidesoftheclosinghandle
arrangedbehindtheclosinghandle
Cupholder(4) cupholderwithslottedrecesses cupholderwithcircularrecesses
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Citizservicemanual 9
M A I N C O M P O N E N T S
3 MA I N COMPON ENT S
3.1 Overviewcoreunit,DrangeForplatformcomponentsrefertomodeloverview.
1) Cupsupport2) Wastewatercontainer3) Capsulecontainer(usedcapsules)4) Coffeenozzle5) Steamcover6) Closinghandle
7) Button"smallcup"(Espresso)8) Button"largecup"(Lungo)9) Sidepanelsleft/right10)Rearcover
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Citizservicemanual10
M A I N C O M P O N E N T S
3.1.1 Interiorviewcoreunit,Drange
1) Buttonprints2) Capsulebay3) Brewingunit(TMBU,TolkienMini
BrewingUnit)4) Pump(InvensysCP4/SP)5) Flowmeter(FHKSC12)
6) Electroniccontrolboard(withprotectivecovers)
7) Selfprimingdevice(APD)8) NTCtemperaturesensor9) Thermoblock(EF2003)
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M A I N C O M P O N E N T S
3.2 Overviewcoreunit,Crange
1) Cupsupport2) Wastewatercontainer3) Capsulecontainer(usedcapsules)4) Sidepanel,left5) Sidepanel,right6) Coffeenozzle
7) Steamcover8) Closinghandle9) Button"smallcup"(Espresso)10)Button"largecup"(Lungo)11)Topcover12)Rearcover
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Citizservicemanual12
M A I N C O M P O N E N T S
3.2.1 Interiorviewcoreunit,Crange
1) Capsulebay2) Brewingunit(TMBU,TolkienMini
BrewingUnit)3) Buttonprints(undertopcover)4) Pump(InvensysCP4/SP)5) Flowmeter(FHKSC12)
6) Electroniccontrolboard(withprotectivecovers)
7) Selfprimingdevice(APD)8) NTCtemperaturesensor9) Thermoblock(EF2003)
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Citizservicemanual 13
M A I N C O M P O N E N T S
3.3 OverviewmodelCitiz
Thisisthebasicmodelwiththesmallestplatform(9).
Thedripgrid(1) existsin2versions, matcheswiththecupholderofthecoreunitversion(e.g.circularrecesses).
ThismodelispicturedwithaCrangecoreunit.
1) Dripgrid2) Driptray3) Coreunit(e.g.Crange)4) Watertankcover5) Watertank
6) Watertankconnector7) Powercord8) ON/OFFswitch(mainsswitch)9) Platform
ThecoreunitsofmodelCitizandCitiz&milkarenotcom
patibleduetodifferentelectroniccontrolboards.
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M A I N C O M P O N E N T S
3.4 OverviewmodelCitiz&milk
Theplatformofthismodelisequippedwithamilkfrother(8).
Thedripgrid(1) existsin2versions, matcheswiththecupholderofthecoreunitversion(e.g.circularrecesses).
ThismodelispicturedwithaCrangecoreunit.
1) Dripgrid2) Driptray3) Platform4) Storageplacesforwhisks5) Coreunit(e.g.Crange)6) Watertank7) Watertankcover8) Milkfrother(Aero3)
9) Lid10) Milkfrotherstartbutton11) Watertankconnector12) Powercord13) Milkfrotherconnector14) ON/OFFswitch(mainsswitch)15) Cupstorage(removable)
ThecoreunitsofmodelCitizandCitiz&milkarenotcom
patibleduetodifferentelectroniccontrolboards.
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Citizservicemanual 15
M A I N C O M P O N E N T S
3.4.1 OverviewmilkfrotherAERO3
Theinsideofthejug(3) haslevelmarks(6), issurfacecoatedforeasycleaning.
ThemilkfrotherAERO3ispartofthestandardequipment
ofthemodelCitiz&milk.
1) Lid2) Seal3) Jug4) Powerplug5) Startbutton(red/bluebacklighted)
6) Indicationof2max.milklevels(120ml/240ml)
7) Mixerforhotmilk8) Springwhiskformilkfoam
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M A I N C O M P O N E N T S
3.5 OverviewmodelCitiz&Co
Thedripgrid(1) existsin2versions, matcheswiththecupholderofthecoreunitversion(e.g.circularrecesses).
ThismodelispicturedwithaCrangecoreunit.
1) Driptray2) Dripgrid3) ON/OFFswitch(mainsswitch)4) Powercord
5) Coreunits(e.g.2xCrange)6) Watertank7) Watertankcover8) Platform
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Citizservicemanual 17
M A I N C O M P O N E N T S
3.6 FluidSystem
3.6.1 Watercircuitdiagramofcoreunit(allCitizversions)
Legend:
Theselfprimingdevice(4) allowsthepumptosuckwaterwhenitisfilledwithair(newmachine,emptywater
tanketc.) removesairbubblesfromthewatercircuit feedsawater/airmixbackintothewatertank.
1) Watertank2) Flowmeter3) Pump4) Selfprimingdevice5) Thermoblock
6) Minibrewingunit(MBU)7) Capsulecontainer8) Wastewatercontainer9) Driptray
Freshcoldwater
Freshhotwater
Coffee
Waste/dripwater
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M A I N C O M P O N E N T S
3.6.2 WatercircuitofmodelsCitiz/Citiz&milk
1) Watertank2) Watertankconnector3) Selfprimingdevice4) Thermoblock
5) Flowmeter6) Coffeeoutlet7) Brewingunit8) Pump
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Citizservicemanual 19
M A I N C O M P O N E N T S
3.6.3 WatercircuitofmodelCitiz&Co
1) Watertank2) Pump3) Brewingunit4) Coffeeoutlet
5) Flowmeter6) Thermoblock7) Watertankconnector8) Selfprimingdevice
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T E C H N I C A L D A T A
4 T E CHN I C A L D A T A
4.1 Ratingplates
4.1.1 Examplesofbrandspecificratingplates
Nespresso,EUversion
Thetypeplatecanbefoundatthebottomofthecoffeemachines
platform.
Thisoverviewshowsexamplesofvariousbrandsandissubject
toalterations.
EF484CitizC110red EF483CitizD110black
EF486Citiz&milkC120red EF485Citiz&milkD120black
EF488Citiz&CoC130red EF487Citiz&CoD130black
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Citizservicemanual 21
T E C H N I C A L D A T A
DeLonghi,EUversion
Koenig,CHversion
EF483CitizD110Limousineblack/DeLonghiEN165.B EF483CitizD11060'sWhite/DeLonghiEN165.CW
EF485Citiz&milkD120Limousineblack/DeLonghiEN265.BAE
EF487Citiz&Co.D130Limousineblack/DeLonghiEN325.B
EF483CitizD110Limousineblack/KoenigCitiz EF483CitizD11060'sWhite/KoenigCitiz
EF485Citiz&milkD120Limousineblack/KoenigCitiz&milk EF487Citiz&Co.D130Limousineblack/KoenigCitiz&Co.
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T E C H N I C A L D A T A
Krups,EUversion
Magimix,EUversion
EF484CitiZXN700510grey EF484CitiZXN700610red
EF486CitiZ&milkXN710610red EF488CitiZ&CoXN750510grey
EF483CitizM190Ref11290black EF483CitizM190Ref11291cream
EF485CitizM190MilkRef11300black EF487CitizM190DuoRef11305black
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Citizservicemanual 23
T E C H N I C A L D A T A
Turmix,ATversion
4.1.2 Ratingplatedetails
EF484CitizC110fireenginered/TurmixTX170Citiz EF484CitizC110steelgrey/TurmixTX170Citiz
EF486Citiz&milkC120fireenginered/TurmixTX270Citiz&milk
EF488Citiz&Co.C130steelgrey/TurmixTX370Citiz&Co.
1) Brandname2) Voltageandpowerrating3) Placeofmanufacture4) NationalapprovalsignofRussia
(GOSTR)5) NationalapprovalsignofGermany
(VDE)6) Barcode
7) Serialnumber8) Machinetype9) Specialdisposalicon
(donotdisposewithordinarywaste)10)Signofconformity(CE)11)ConformwithRoHSguidelines(lead
freesolder,etc.)12)Articlenumberoftheratingplate
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T E C H N I C A L D A T A
Decodingthealphanumericserialnumber
Example:
4.1.3 Ratingplateofmilkfrother(modelCitiz&milk)
Bydecodingthedateofproductionandmachinetype,the
coffeemachinecanbeidentifiedexactly.
Checksum(ifavailable)
Colorversion
Typeofmainsplug
Mainsvoltage
Distributingpartner
Incrementalnumberperproductionday
Manufacturingplant
Manufacturerdesignationofthemachinetype(EF484)
08312...Dateofproduction(08=year2008,312=312dayoftheyear)
Notehemainsvoltagerangesofthedifferentmodels.
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T E C H N I C A L D A T A
4.2 Summaryoftechnicaldata
4.2.1 Technicaldataofcoffeemachines
Mainsvoltageranges
MainsvoltageforCitiz
Europe,RU,AU,CN,KR,SG,HK,ME,ZA,IL,BR,AR........... 220240V/5060Hz
USA,Canada,BR,MX..............................................................120127V/5060Hz
Japan .............................................................................................. 100V/5060Hz*
MainsvoltageforCitiz&milk
Europe,RU,AU,CN,KR,SG,HK,ME,ZA,IL,BR,AR........... 220240V/5060Hz
USA,Canada,BR,MX..............................................................120127V/5060Hz
MainsvoltageforCitiz&Co
Europe,RU,AU,ME,IL............................................................ 220240V/5060Hz
Approvals
ApprovalsforCitiz ........................CE,UL"forUSAandCanada",PSE,GostR,Ctick,
CCC,KTL,SPRING,SASO,SABS,ISI,IRAM,NOM
ApprovalsforCitiz&milk ............ CE,UL"forUSAandCanada",GostR,Ctick,CCC,
KTL,SPRING,SASO,SABS,ISI,IRAM,NOM
ApprovalsforCitiz&Co .................................................. CE,GostR,Ctick,SASO,ISI
Powerratingsofcoffeemachinemaincomponents(forallvoltagesandfrequencies)
Thermoblock .....................................................................................................1200W*
*modelCitiz&Co,Australia:1080W
Pump................................................................................................................. 55/60W
Performancedataofcoreunit
Heatingup
Citiz ...................................................................................................... approx.7.6WhCitiz&milk ........................................................................................... approx.7.6WhCitiz&Co........................................................................................... approx.14.9Wh
1smallcup(40ml*)
Citiz ...................................................................................................... approx.4.3WhCitiz&milk ........................................................................................... approx.4.3WhCitiz&Co(bothheads)........................................................................ approx.7.6Wh*Defaultsetting
TechnicaldataarevalidforallCitizmodelsunlessexplicitly
statedotherwise.
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T E C H N I C A L D A T A
1largecup(110ml*)
Citiz ...................................................................................................... approx.8.7WhCitiz&milk ........................................................................................... approx.8.7WhCitiz&Co(bothheads) ...................................................................... approx.14.8Wh*Defaultsetting
Standbyoperation(in1hour)
Citiz ...................................................................................................... approx.0.7WhCitiz&milk ........................................................................................... approx.0.7WhCitiz&Co ............................................................................................. approx.2.2Wh
Pump
Pumppressure
Max.permissible .............................................................................. 17.5bar1.5bar
Duringcoffeepreparation(dependingonthetypeofcoffee)..........................916bar
Flowperformance..................................................................120240ml/min.at12bar
Capacities
Watertank
Citiz ........................................................................................................................1.0lCitiz&milk .............................................................................................................1.0lCitiz&Co ...............................................................................................................1.4l
DriptrayCitiz ....................................................................................................................100mlCitiz&milk .........................................................................................................180mlCitiz&Co ...........................................................................................................250ml
Capsulecontainer
Citiz,Citiz&milk .................................................................................... 911capsulesCitiz&Co ........................................................................................2x(912)capsules
Temperatures
Operatingtemperature ................................................................... +5Cupto+45C
Storagetemperature..................................................................... 25Cupto+60C
Safetytemperature(thermalcutoff)................................................................... 167C
Coffeetemperatureatoutlet....................................................................... 86C3C
Variousdata
Noiseduringbrewingcycle....................................................................max.60dB(A)**modelCitiz&milk:measuredwithoutmilkfrother
*modelCitiz&Co:measuredwithonlyonecoreunitrunning
Preheatingtime .......................................................................................approx.60sec
Cablelength .............................................................................................. approx.1.2m
Advisedwatertankcapacitiestoavoidspilling.
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Citizservicemanual 27
T E C H N I C A L D A T A
4.2.2 Technicaldataofmilkfrother(modelCitiz&milk)
Mainsvoltage
Europe........................................................................................ 220240V/5060Hz
USA/Canada ................................................................................120127V/5060Hz
Themilkfrother isavailablein2differentmodels,dependingonabovemainsvoltageranges, hastomatchthemainsvoltagerangeoftheassociatedcoffeemachine.
Powerrating(dependingonmainsvoltage)
220240V,5060Hz..................................................................................... 410490W
110127V,5060Hz..................................................................................... 380505W
Standbyoperation ...............................................................................................
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T E C H N I C A L D A T A
Performancedata
Whiskspeed......................................................................................... 20002700rpm
Preparationtimes(withfull,semiskimmedorskimmedmilkat810Cfridgetemperature)Hotmilkfroth(120ml) .....................................................................................5080sec
Coldmilkfroth(120ml) ...................................................................................6080sec
Hotmilk(240ml) .........................................................................................120180sec
Temperature
Hotmilk ............................................................................................. +60Cto+70C
Foammilk.......................................................................................... +60Cto+70C
Variousdata
Noiseemission ........................................................................................ max.55dB(A)
4.2.3 DimensionsandweightmodelCitiz
Dimensions(widthxheightxlength).............................................130x277x372mm
Cupsupportdown .............................. 8590mm,forespressoandlungocups/glasses
Cupsupportup.......................................................150155mm,formacchiatoglasses
Weight(withoutwater)..............................................................................approx.3.4kg
Theoveralldimensionsarethesameforbothcoreunitver
sions(CandDrange).
Dimensionsinmm
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Citizservicemanual 29
T E C H N I C A L D A T A
4.2.4 DimensionsandweightmodelCitiz&milk
Dimensions(widthxheightxlength) ............................................ 237x277x372mm
Weight(withoutwater,milkfrotherincluded) ...........................................approx.4.6kg
4.2.5 Dimensionsandweightmilkfrother
Dimensionsofjugcpl.(diameterxheight) ................................................91x170mm
Whiskforfoam(diameterxheight) ..............................................................33x32mm
Mixerforhotmilk.................................................................................. 15x34x32mm
Weight(withwhiskandmixer) ..............................................................................0.7kg
Theoveralldimensionsarethesameforbothcoreunitver
sions(CandDrange).
Dimensionsinmm
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Citizservicemanual30
T E C H N I C A L D A T A
4.2.6 DimensionsandweightmodelCitiz&Co
Dimensions(widthxheightxlength).............................................326x281x286mm
Weight(withoutwater).................................................................................approx.7kg
Theoveralldimensionsarethesameforbothcoreunitver
sions(CandDrange).
Dimensionsinmm.
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Citizservicemanual 31
O P E R A T I O N
5 O P ERA T I ON
5.1 Generalinformation
ForanoverviewofoperationalcontrolsseeMainComponentsonpage 9.Forbasicoperationofthemachinesuchaspreparingacoffeeandotherrelatedinformation,refertotheusermanual.Tosimplifymatters,themodelCitizwithcoreunitCrangeisusedtoexemplifythroughoutthischapter.
5.2 Statusindication
5.2.1 Statusindicationofcoffeemachine
ThetwocoffeebuttonswithgreenLEDbacklightshowthestatusofthecoffeemachineaccordingtothefollowingtable:
Machinestatusetc. "Smallcup" button
"Largecup" button
LEDsignal
Off BothLEDsoff
SelftestBlinking1Hz,0.5son,0.5soff
Error
Blinkingfast(2Hz,0.25 son/0.25soff)3timesevery2seconds
HeatupBlinking1Hz,0.5son,0.5soff
Ready BothLEDson
BrewingsmallcupBlinking1Hz,0.5son,0.5soff
BrewingbigcupBlinking1Hz,0.5son,0.5soff
Rinsesmallcup
Blinking1Hz,0.5son,0.5soff(sameasbrewingsmallcup)
Rinsebigcup
Blinking1Hz,0.5son,0.5soff(sameasbrewingbigcup)
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Citizservicemanual32
O P E R A T I O N
Volumebrewingsmallcup
Blinking1Hz,0.5son,0.5soff(sameasbrewingsmallcup)
Volumebrewingbigcup
Blinking1Hz,0.5son,0.5soff(sameasbrewingbigcup)
DescalingreadyBlinking2Hz,0.25son,0.25soff
Descalingpumpon(descal)
Blinking2Hz,0.25son,0.25soff(sameasdescalingreadymode)
Descalingpumpoff(descal)
Blinking2Hz,0.25son,0.25soff(sameasdescalingreadymode)
Emptying/EvaporatingBlinking2Hz,0.25son,0.25soff
StandbyBlinking0.5Hz,1son,1soffalternately
ResettingBlinking2Hz,0.25son,0.25soffindicationfor3s
PowersaveBlinking0.2Hz,2.5son,2.5soffalternately
OverheatBlinking1Hz,0.5son,0.5soff(sameasheatup)
PowersaveactivationBlinking0.5Hz,1son,1soffalternately5times
Machinestatusetc."Smallcup"
button"Largecup"
buttonLEDsignal
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Citizservicemanual 33
O P E R A T I O N
5.2.2 StatusindicationofmilkfrotherAERO3
Theoperatingbuttonwithred/bluebacklightshowsthestatusofthemilkfrotheraccordingtothefollowingtable:
Powersavedeactivation(onlyformodelCitiz&Co)
Blinking0.5Hz,1son,1soffalternately3times
Machinestatusetc."Smallcup"
button"Largecup"
buttonLEDsignal
Toresetaredblinkingbacklight:
1.Removemilkfrotherfromplatform.2.Removecauseoffailureifpossible.
Machinestatusetc. Operatingbutton Lightsignal
Off Backlightoff
Onhotmilkpreparation Redbacklighton
Oncoldmilkfrothpreparation
Bluebacklighton
Failure/malfunction(e.g.overheatingbecauseofburntmilk,toolessornomilk)
Blinkingredbacklight(1Hz,0.5son,0.5soff)
Failure:milkfrotherhaswrongmainsvoltagerange
Fastblinkingredbacklight(2Hz,0.25son,0.25soff
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Citizservicemanual34
O P E R A T I O N
5.3 Machinemodes
5.3.1 MachinemodesofCitizcoffeemachines
ThistablehelpstounderstandtheoperatingmodesofaCitizcoffeemachine:
Machinemode Entermode Actions Exitmode
1HeatupmodeEverytimeafterswitchingonmachine
Heatsupthermoblocktoreadytemperature90Cwithin60swithoutovershootingtargettemperature
e.g.switchingoffmachine
2SelftestmodeEverytimeafterswitchingonmachine
Tests: NTCshortcircuit NTCconnected Thermoblockheatingcurve
Errorhandling:Trackingofthelast5errorsbyaringbuffer
e.g.switchingoffmachine
3Readymode
Afterheatupandselftestmodewasok
Afterbrewingorvolumebrewingcoffee
Afterresetmode Afterleavingdescalingmode
Keepsthermoblocktemperatureat90C
e.g.switchingoffmachine
4aBrewingmode4bVolumebrewing
mode(programmingcupsize)
Pressandreleaselargeorsmallcoffeebutton(brewingmode)
Pressandholdlargeorsmallcoffeebuttonformorethan3s(programmingmode)
Pressandreleaselargeorsmallcoffeebuttonwhenmachinewasinbrewingmodeorautomaticexitgivenbytheflowmeter
Releaselargeorsmallcoffeebuttonwhenmachinewasinprogrammingmode
Switchingoffmachine
5Descalingmode
Switchonmachine,waituntilready
Pressandholdbothcoffeebuttonsforatleast3s
Regulatetemperatureto65C(afterpumpwasstarted)
Stopandstartpumpwithanycoffeebutton,novolumebrewingindescalingmode
Pressandholdbothcoffeebuttonsforatleast0.5s
Note:Whenmachineisswitchedoffduringanydescalingmode,thenitgoestodescalingmodereadystateafternextswitchon.
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Citizservicemanual 35
O P E R A T I O N
5.3.2 MachinemodesofmilkfrotherAERO3
6Emptyingmode(evaporing)
1) Switchoffmachine2) Pressandhold
smallcoffeebutton3) Switchonmachine
1) Startpump2) Stoppumpafter
10 s3) Heatupthermo
blockto105 C(100%power)
4) Switchoffthermoblock
5) Gotostandbymode
Switchoffmachine
7Resettingmode
1) Switchoffmachine2) Pressandhold
largecoffeebutton3) Switchonmachine
Resettheprogrammedlargeandsmallcoffeevolumestofactorysetting
Indicatetheresettingmodefor3s
Factorysettings: smallcup....40ml largecup...110ml
proceedswithselftestmodeautomatically
8Powersavemode
Toenablepowersavemode:1) Switchoffmachine2) Pressandhold
bothcoffeebuttons3) Switchonmachine4) Coffeebutton
LEDsblink5timesalternativelyasconfirmation
Afterthatautomaticallyafter30 minofnonuse
Reducethermoblocktemperature
SwitchLEDindicationtopowersavemode(blinkingalternatelyevery2sec)
Pressanycoffeebuttontoactivatereadymode
Todisablepowersavemode:1) Switchoffmachine2) Pressandhold
bothcoffeebuttons3) Switchonmachine4) Coffeebutton
LEDsblink3timesalternativelyasconfirmation
9Failuremode
Automaticallybyfollowingfailures:a)NTCshortcircuitb)NTCnotconnectedc)Heatuptooslow
MachineindicatesfailurewithcoffeebuttonLEDsaslongasthefailureispresent
Whenfailureisfixed
10StandbymodeAutomaticallyafteremptyingmode
Switchthermoblockoff
SwitchLEDindicationtostandbymode
Switchoffthemachine
Machinemode Entermode Actions Exitmode
1Hotmilk/milkfrothpreparation
Pressstartbuttonbriefly
Startbuttonlightsupred.Milkisheatedandmixed.
Automaticswitchoffafterpreparation
2Coldmilkfrothpreparation
Keepstartbuttonpressedforapprox.2 sec
Startbuttonlightsupblue.Milkismixedonly.
Automaticswitchoffafterpreparation
Machinemode Entermode Actions Exitmode
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Citizservicemanual36
O P E R A T I O N
5.4 Program/resetfilluplevel
Eachcoffeebuttoncanbeprogrammedwithacoffeevolumeforanindividualcupsize.Theprocedureforprogramming/resettingisthesameforbothcoffeebuttons.
5.4.1 Programmingthefilluplevel
Programmablevolumerange ..........................................................................10750ml
5.4.2 Resettingthefilluplevel
Withthefollowingprocedureallprogrammedfilluplevelswillbesetbacktothisfactorysettings:Coffeebutton"smallcup" ....................................................................................... 40ml
Coffeebutton"largecup"..................................................................................... 110ml
Eachnewprogrammingcyclestartswiththemin.volume
(10 mlafter3sec),regardlessofapreprogrammedcoffeevolume.
1) Preparecoffeeasusual(seeusermanual),butkeepthecoffeebuttonpressedforatleast3secondsinordertostartprogrammingmode.
2) Onlyreleasethebuttonwhenthedesiredfilllevelisreached.
1) Switchoffthecoffeemachine. 2) Pressandholdthe"largecup"button.3) Switchonthecoffeemachine.4) Release"largecup"button.
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Citizservicemanual 37
O P E R A T I O N
5.5 Emptywatersystem
Aftereveryoperation,somewaterremainsinthecoffeemachine.Thereforethewatersystemmustbeemptied ifthecoffeemachinewillnotbeusedforalongtime asantifreezemeasure forrepairsandshipment.
1) Switchoffcoffeemachine. 2) Removewatertank.3) Placeabeakerunderthecoffeeout
let.ModelCitiz&Co:Onlyonecoreunitshouldbeemptiedat
thesametime(dangerofmainssupplyoverload).
Afterthisprocedure,thecoffeemachinewillnotbereadyfor
approx.10min(untilthethermoblockcoolstobelow100 C).
4) Pressandholdbutton"smallcup".5) Switchthecoffeemachineonagain.6) Releasebutton"smallcup".
Thepumpstartstodrainthewatersystemandstopsautomatically.
Thecoffeebuttonsblinkfastsimultaneously.
7) Afterautomaticstop,switchoffthecoffeemachine.
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Citizservicemanual38
M A I N T E N A N C E
6 M A I N TEN A NCE
6.1 Dailymaintenanceandcleaning
6.1.1 BeforefirstcoffeeoratthestartofdayTheCitizmodelisshownasexample.Maintainandclean
othermodelsaccordingly.
1) Fillwatertankwithfreshpotablewater.
2) Insertwatertank.3) FormodelCitiz&milk:
Attachwhisktomilkfrother.Placemilkfrotheronbaseplateconnector.
4) Switchmachineon.
Afteralongerperiodofnonuse:5) Placeacontainerundercoffeeoutlet.
6) Rinsecoffeemachinebypressingbutton"largecup"about6times.
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Citizservicemanual 39
M A I N T E N A N C E
6.1.2 Afterlastcoffeeorattheendofday
Riskoffatalelectricalshockandfire!Nevercleanwetorimmerseplug,cordorapplianceinanyfluid.Unplugapplianceandletitcooldowntoavoidburns.
Platformanddriptraysurfacesarenotabrasionproof.
Neverusebrushesand/orcleaningagentsthatcontainaggressiveorchemicalcomponentsresp.solvents.Donotputanypartinadishwasher.Useonlyadampclothorspongeandamildcleaningagentifnecessary
1) Switchmachineoff.2) Checkifcapsuleisejected.
3) Emptyandcleancapsulecontainer(a)wastewatercontainerwithcupsupport(b)
driptraywithdripgrid(c).Donotuseabrushthewatertankcanbescratched.
4) Empty,rinseandcleanwatertank. 5) Reassemblecoffeemachine.6) Cleancoffeemachinewithadamp
clothifnecessary.
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Citizservicemanual40
M A I N T E N A N C E
6.1.3 MilkfrotherofmodelCitiz&milk
Riskofdamage!Theinsideofthejugiscoatedforeasycleaning.Neverusebrushesand/orcleaningagentsthatcontainabrasiveoraggressive,chemicalcomponentsresp.solvents.Donotputanypartinadishwasher.Useonlyadampclothandamildcleaningagentifnecessary.
1) Removemilkfrotherfromplatform. 2) Removelidanddismantlewhisk.
Keepconnectors
dry(onplatformand
atundersideofmilk
frother).
3) Removesealfromlid.4) Rinseandcleanmilkfrothertogether
withwhiskormixer,lidandseal.
5) Cleanoutsideofmilkfrotherwithadampclothifnecessary.
6) Reassemblemilkfrother.
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Citizservicemanual 41
M A I N T E N A N C E
6.2 Descaling
Usethischarttoinformacustomerwhentodescalethecoffeemachinedependingonlocalwaterhardnessandaveragecoffeeconsumption.DoubletheestimatedtimeintervalformodelCitiz&Co.
6.2.1 DescalingprocedureformodelsCitizandCitiz&milk
OnlyuseNespressodescalerordescalingkitneverusevinegar!Descalercandamagecasingandcontactsurfaces.Immediatelycleandropsofdescalingsolution.
Thedescalingchartisbasedonacupsizeof40ml.
fH...FrenchgradedH...GermangradeCaCO3...Calciumcarbonate
TheCitizmodelisshownasexample.
1) Ejectcapsuleorcheckifcapsuleisremoved.
2) Removeandemptycapsule/wastewatercontainer,driptrayandwatertank.
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Citizservicemanual42
M A I N T E N A N C E
Observethesafetyinstructionsonthedescalerpackage.
Useacontainerwithacapacityof1 lmin.
3) Reassemblecoffeemachinewithoutwatertank.
4) Placeacontaineronthecupsupport.
5) Fillthewatertankwith0.1 ldecalcifier(1bag)and0.5 lwater.
6) Insertwatertankintothecoffeemachine.
7) Pressbothcoffeebuttonssimultaneouslyforatleast3 sec.
8) Themachineisindescalingmodenow(bothbuttonsblinkingfast).
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Citizservicemanual 43
M A I N T E N A N C E
Danger!Hotsplashesofdescalingsolution.
Donotopenhandleduringdescalingprocess.
9) Pressanybuttontostartpump.Lettheentiresolutioninthetankrunthroughthesystem.
10) Afterwatertankisempty,pourdescalingsolutionbackintowatertank.
11)Placeemptycontainerbackoncupsupport.
12) Descaleagain:pressanybuttonandwaituntilwatertankisempty.
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Citizservicemanual44
M A I N T E N A N C E
Dangerofinjury!Residualdescalermaybeharmful.
Rinsethoroughlytoremoveanyresidue.
13) Emptycontainerandputitbackoncupsupport.
14) Rinseandcleanwatertankthoroughlyandfillitwithfreshpotablewater.
15) Rinsecoffeemachinebypressinganybuttonandwaituntilwatertankisempty.
16) Pressbothcoffeebuttonssimultaneouslyforatleast3 sectoenddescalingmode.
17) Removeandemptycontainer.
18) Switchoffcoffeemachine.19) Emptyandcleancapsule/wastewater
containeranddriptray.20) Cleancoffeemachinewithadamp
clothifnecessary.
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Citizservicemanual 45
M A I N T E N A N C E
6.2.2 DescalingprocedureformodelCitiz&Co
1) Ejectcapsulesorcheckifcapsulesareremoved.
2) Removeandemptycapsule/wastewatercontainers,driptrayandwatertank.
Observethesafetyinstructionsonthedescalerpackage.
Usecontainerswithacapacityof1 lmin.
3) Reassemblecoffeemachinewithoutwatertank.
4) Placeacontainerundereachcoffeeoutlet.
5) Fillthewatertankwith0.2 ldecalcifier(2bags)and1.0 lwater.
6) Insertwatertankintothecoffeemachine.
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Citizservicemanual46
M A I N T E N A N C E
7) Pressbothcoffeebuttonssimultaneouslyforatleast3 sec.onfirstcoreunit.
8) Repeatprocedurewithsecondcoreunit.
9) Themachineisindescalingmodenow(bothcoffeebuttonsblinkingfastoncoreunits).
Dangerofinjury!Hotsplashesofdescalingsolution.
Donotopenhandlesduringdescalingprocess.
10)Pressanybuttononacoreunittostartpumps.Lettheentiresolutioninthetankrunthroughthesystem.
11) Afterwatertankisempty,pourdescalingsolutionfrombothcontainersbackintowatertank.
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Citizservicemanual 47
M A I N T E N A N C E
12)Placeemptycontainersbackoncupsupports.
13) Descaleagain:pressanybuttononacoreunitandwaituntilwatertankisempty.
14)Emptycontainersandputthembackoncupsupports.
15)Rinseandcleanwatertankthoroughlyandfillitwithfreshpotablewater.
16)Rinsecoffeemachinebypressinganybuttononfirstcoreunit.
17) Repeatprocedureonsecondcoreunitandwaituntilwatertankisempty.
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Citizservicemanual48
M A I N T E N A N C E
18) Pressbothcoffeebuttonssimultaneouslyforatleast3 sectoenddescalingmode.
19) Repeatprocedureonsecondcoreunittoenddescalingmode.
20) Removeandemptycontainers.
21) Switchoffcoffeemachine.22) Emptyandcleancapsule/wastewater
containersanddriptray.23) Cleancoffeemachinewithadamp
clothifnecessary.
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Citizservicemanual 49
T R O U B L E S H O O T I N G
7 T ROUB L E SHOOT I NG
7.1 Checklistforcoffeemachine(allmodels)
Afteraninitialinspectioninaccordancewiththischecklist,
errorsarequicklyfoundandcorrectedwiththeappropriatemeasure.Therefore,adheretothesequenceofthechecklist.Repaireveryoccurringerrorandworkthechecklistthroughuntilitiscompleted.
Check Errorsymptoms Measure/repairwork
Furthermeasures/repairwork
1Checkthecoffeemachineforvisibledamage
1.1Housingpartsbrokenordamaged
YESreplacehousingpartsifnecessaryNOcontinue
1.2Powercorddamaged
YESreplacepowercordNOconnectpowercordofmachinetothemainsandcontinue
2Checkmechanicalcomponents
2.1Cupsupportdoesnotremaininverticalposition
YEScheckifthecapsuleandwastewatercontainerarecorrectlyinsertedandmountedNOcontinue
YESreplacedamagedordeformedcapsulecontainerand/orwastewatercontainer.
2.2Cupsupportrattleswhenfoldeddown
YEScheckif2rubberstoppersaremountedonwastewatercontainerNOcontinue
NOreplacestoppers
2.3Closinghandlemalfunction
YESitisverydifficultoralmostimpossibletoclosethehandleandtopressitallthewaydownNOcontinue
YESreplacethecompactbrewingunit
2.4Closinghandleunusualnoiseduringactuation
YEScheckifdamperismountedunderneathclosinghandleNOcontinue
NOreplacedamper
2.5Capsuleisnotejectedcorrectly
YESreplacebrewingunit(TMBU)NOcontinue
2.6Sealoncapsulecageisdamaged(checksealwithyourfinger)
YESreplacebrewingunit(TMBU)NOcontinue
3Fillwatertank 3.1WatertankleaksYESreplacewatertankNOcontinue
4ActivateOn/Offswitchtoperformautomaticselftest
4.1Coffeemachineisnotworking(doesnotfunction)
a)YESpowercordisokay(looseconnection)
YEScontinueNOreplacepowercord
b)YESOn/Offswitchisokay YEScontinueNOreplaceOn/Offswitch
c)YESpumpworks(pressacoffeebutton)
YEScontinuewithpointf)NOcontinuewithpointd)
d)YESbothcoffeebuttonsareworking
YEScontinueNOreplaceelectroniccontrolboard
e)YESthermostatonpumpisdefective
YESreplacethermostatNOreplacepump
f)YESfinewirefuse(s)(167C)onthermoblockdefective
YESreplaceelectroniccontrolboard,ifnecessaryreplacethermoblockNOcontinue
g)YESwiringisokayNOcontinuewithpoint4.3
YESreplaceelectroniccontrolboardNOreplacedefectivecables
4.2Bothcoffeebuttonsareblinking3xfast
YESthermoblockishotNOselftestokcontinue
YESreplaceNTCtemperaturesensorNOreplacethermoblock
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Citizservicemanual50
T R O U B L E S H O O T I N G
5Measurecoffeetemperatureduringpreparation(seepage136)
5.1Nocoffee
YESa)watersystemisemptyYESreplaceselfprimingdevice(APD)NOcontinue
YESb)flowmeterblocked YEScleanorreplaceNOcontinue
YESc)pyramideplateblocked
YESreplacethecompactbrewingunitNOcontinue
YESd)coffeemachineiscalcifiedNOcontinue
YESdescalecoffeemachine(seepage41)
5.2Temperatureistoolow(below83C)
YESdescalecoffeemachine(seepage41)NOcontinue
5.3Temperaturetoohigh(over89C)
YESreplaceNTCtemperaturesensorNOcontinue
6Checkforleakage(seepage133)andmeasureflowrate(seepage132)
6.1Compactbrewingunitleaks
YESreplacecompactbrewingunitNOcontinue
6.2Hoseconnectionsleak
YESreplacedefectivehosesandsealsNOcontinue
6.3Rateofflownotinthestandardrange
YEScoffeemachineiscalcifiedNOcontinuewithpoint9
YESdescalecoffeemachine(seepage41)NOreplacepump
7Descalecoffeemachine(ifnecessary)
7.1Coffeemachineiscalcified
YESdescalecoffeemachine(seepage41)NOcontinuewithpoint9
8Checkwatertankcontentsafterdescalingandrinising
8.1Particlesofcalciumandrustvisibleinwater
YESdescaleandrinsecoffeemachineagaintocleanwatercircuit(seepage41)NOcontinue
YESinformcustomertodescalecoffeemachineperiodicallyandtousespecifieddescalingproductonly.
9Finalcleaning(seepage38)
Noerrorsfoundaccordingtochecklist?
YESformoreinformationpleasecontactNespressoServiceDivision
Endofchecklist
Check ErrorsymptomsMeasure/repairwork
Furthermeasures/repairwork
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Citizservicemanual 51
T R O U B L E S H O O T I N G
7.2 Checklistformilkfrother
ThemilkfrotherispartoftheCitiz&milkmodel.
Check Errorsymptoms Measure/repairwork
Furthermeasures/repairwork
1Checkmilkfrotherandaccessoryforvisibledamage
1.1Lid/sealbrokenordamaged
YESreplacelid/sealNOcontinue
1.2Insidecoatingofjugbadlyscratched
YESreplacemilkfrotherinagreementwithcustomerNOcontinue
YESinformcustomerhowtocleanmilkfrother
1.3Whisksbrokenordamaged
YESreplacewhisksNOcontinue
4Placemilkfrotheronplatformconnector.Attachwhisk.Switchoncoffeemachine.Pressstartbuttonbriefly(hotmilkpreparation).
4.1Milkfrotherisnotworking(doesnotfunction)
YESa)coffeemachineisheatingup
YEScontinueNOcontinuewithchecklistforcoffeemachine
YESb)connectoronplatformisok(testitwithanothermilkfrother)
YESreplacemilkfrotherNOreplaceconnectoronplatform(see page73)
4.2Abnormalnoiseduringpreparation
YESreplacemilkfrotherNOcontinue
4.3Milkfrotherdoesnotswitchoffautomatically
YESreplacemilkfrotherNOcontinue
4.4Insideofjugstayscold
YESreplacemilkfrotherNOcontinue
5Pressstartbuttonforatleast2sec(coldmilkpreparation)
5.1Startbuttonisnotbacklightedinblue
YESreplacemilkfrother
6Finalcleaning(seepage40)
Noerrorsfoundaccordingtochecklist?
YESformoreinformationpleasecontactNespressoServiceDivision
Endofchecklist
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Citizservicemanual52
R E P A I R S
8 R E P A I R S
Theserepairinstructions arebasedonexplodeddrawingswithpositionnumberscombinedwithrepairand
mountingtips, presupposebasicknowledgeinrepairingNespressocoffeemachines.
Asarule,identicalcomponents(e.g.pumps,thermoblocksetc.)arepresentedindetailonlyonce.
8.1 Safetyinstructions
8.2 Repairandmountingtips
Thesegeneraladvicesarecompletedwithspecificrepairtipsinthischapter.
Additionalinformation
Forcomponentsnotmentionedinthisrepairchapter,refertothechapters"ExplosionDrawings"onpage148and"PartsList"onpage154.
Snapconnections
Partsofthecaseandcomponentsofthecoffeemachineareconnectedscrewlesswithlatches.
Whenlooseningtheselatches,proceedwithcareandpatiencetoavoidcausinganydamage.
Thesidepanelsofthecoreunithavedelicatesnapconnectionsthatcanbrakeeasily.
Whenremovingthesesidepanels,usethespecialdisassemblytoolandprocceedaccordingtothedisassemblyinstructions.
Screwconnections
Donotovertightenscrews.Plasticthreadsandinsertsaredelicate.Observemax.torqueforthescrewconnectionsaccordingtothefollowingtable.
Riskoffatalelectricalshock!Mainsvoltageinsidethecoffeemachine.Disconnectthemainsplugbeforedisassemblythecoffeemachinemustbefreeofvoltage.
Dangerofburns!Hotpartsandwaterunderpressureinsidethecoffeemachine(thermoblockinparticular).Letcoffeemachinecooldownbeforedisassembly.
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Citizservicemanual 53
R E P A I R S
Screw/screwconnection Torque Position
Screwwithovalshapedhead50(+30/0)Ncm0.5(+0.3/0)Nm
Bottomofplatform
TX10screw(4x)/brewingunit(TMBU)
50(+30/0)Ncm0.5(+0.3/0)Nm
TX10screw/thermoblocksupport(central)
150(+30/0)Ncm1.5(+0.3/0)Nm
NTCfixationonthermoblock80100Ncm0.81.0Nm
TX20screw(2x)/thermofusefixationsonthermoblock
150(+30/0)Ncm1.5(+0.3/0)Nm
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Citizservicemanual54
R E P A I R S
Designationofspareparts
Thecomponentsinthefollowingillustrationsareindexedwithpositionnumbers.Seeseparatesparepartslistforcorrespondingsparepartnumbers.
Distinguishbetweensparepartsofthedifferentmodelsandcoreunitversions.
Electrostaticdischargeprotection
Wheninstallinganewelectroniccontrolboard,theservicetechnicianmustbeearthedwithagroundingband.
Wiringarrangement
Randomchangesinthewiringarrangementduringarepaircancause electromagneticinterferences, squeezedwires, insulationdefectsduetocontactwithhotparts, insulationproblemsiflowandhighvoltagewiresarenotseparated.
Protectivemeasures: Donotchangethecourseofinternalwiringduringrepair.
Makesurethatwiresaredistantfromhotpartsuseexistingcableductsandclips.
Residualwater
Ifitisnecessarytopulloffhosesfromcomponents,holdreadyasmallbeakerandatoweltocollectandwipeawayleakingwater.
Aspecialprocedureisnecessarytoemptythefluidsystemofthecoffeemachineforrepairorshipment(referto"Emptywatersystem"onpage37).
TX20screw/groundconnection(PE)onthermoblock
150(+30/0)Ncm1.5(+0.3/0)Nm
Screw/screwconnection Torque Position
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Citizservicemanual 55
R E P A I R S
8.3 Toolsandaccessories
Withthefollowingassortmentoftools,allrepairsdescribedcanbemade:
Adynamometricscrewdriverwithsuitablebitsisrecom
mended.
1) Specialscrewdriverwithshortovalbit(EFRno.0004872)
2) Shortovalbitonly(EFRno.0004878)
3) Disassemblytool(forsidepanelsetc.)(EFRno.0060611)
4) Repairing/serviceholderdeviceformodelsCitizandCitiz&milk(availablefromNespresso)
5) Repairing/serviceholderdeviceformodelCitiz&Co(availablefromNespresso)
6) TORXscrewdriver(TX10,TX15)7) Screwdriverwithapprox.4mmtooltip8) HexagonalwrenchSW49) FlatwrenchSW14,10mmAF10)Torquewrench11)Longnosedpliers12)Flatpliers13)Beakerandtoweltocatchandwipe
awayleakingwater
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Citizservicemanual56
R E P A I R S
8.4 PlatformdisassemblymodelCitiz
8.4.1 Generaldisassembly
Thisgeneraldisassembly isnecessarybeforetheremoval/disassemblyofacoreunitispossible, givesaccesstothecomponentsandwiringoftheplatform.
Takeawayallremovablepartsfromplatformandcoreunitcupsupport(8)withwastewatercontainer(6)capsulecontainer(7)driptray(46)withdripgrid(49)watertank(44)withcover(45).
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Citizservicemanual 57
R E P A I R S
Loosen2screws(41,ovalshapedhead)atthebottomsideofplatform.
Usescrewdrivertoreleaselatches.Startbyinsertingthesrewdriverintheopeningforthepowercord.
Removebottomcover(51)byswingingituplikeshown.
Thebottomcover(51)isinsertedintotheplatformwithboth
edgesofitssmallend.Onlyremovebottomcoverbyswinginguptheroundend.
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Citizservicemanual58
R E P A I R S
Assemblycheckpoints
Checkif2rubberstoppersaremountedonwastewatercontainer(6).
Insertbottomcover(51)withsmallendintoplatformatfirst.Thenfolditdownandcloselatches.
Takecarenottojamanywiresatthescrewconnections.
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Citizservicemanual 59
R E P A I R S
8.4.2 Replacingwatertankconnector
Pulloffbothhosesfromwatertankconnector(53).
Releasethe3latchesaroundthewatertankconnectoroneaftertheotherbypressingthetopoftheirhooksoutwardswithascrewdriver(seedetail)andliftingthewatertankconnectoratthesametime.
Removegasket(a)fromwatertankconnector(53).
Withthehelpofapairoftweezers,removeclampingring(b)andmetalsieve(c).
Cleanorreplaceparts.
Thewatertankconnector(53)isreplacedtogether
withgasket,clampingringandmetalsieve.
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Citizservicemanual60
R E P A I R S
Assemblycheckpoints
Checkthatgasketisinsertedinwatertankconnector(53)correctly.
Duringassemblyofthewatertankconnectorontheplatform,eachofits3latcheshastoengagewithanaudibleclick.
Mindthedifferentdiametersofhosesforthewatertankconnector.
8.4.3 Replacingmainsswitch
Removewatertankconnectorfromplatformfirst(seepage59).
Removebothinsulatedfastonreceptaclesfrommainsswitch(54).
Pressbladeofscrewdriverbetweenholderofmainsswitchandplatformcarefully.Liftholderwithscrewdriverslightly.Thenpressholderwithmainsswitch(54)inwardsuntilitcanberemoved.
Thehosescanremainonthewatertankconnector.
Useapairofflatplierstopulloffinsulatingsleevewithrecep
tacle.
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Assemblycheckpoints
Usemarkedcableguidetolaywires.
Themainsswitchholder(54)hasanotch:correctfittingpositioniswithmainsswitchconnectionsnexttotheplatform(seedetail).
Duringassemblyofthewatertankconnector(53)ontheplatform,eachofits3latcheshastoengagewithanaudibleclick.
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8.4.4 Replacingpowercord
Removewatertankconnectorfromplatformfirst(seepage59).
Removeinsulatedfastonreceptacleofphasewirefrommainsswitch(54).
Disconnectadapterplugofneutralwire(15).
Ifpresent,disconnectgroundwire(15,seedetail).
Unlatchcablebracket(56)withscrewdriver.
Thehosescanremainonthewatertankconnector.
Useapairofflatplierstopulloffinsulatingsleevewithrecep
tacle.
Theflatreceptacleonthegroundwirehasaspecialconnector
latching(seedetail).Pressdownleveratfirst,thenpulloffreceptacle.
Thecablebracketisundertension.Therefore,holdthecable
bracketwithyourfingerwhenunlatchingit.
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Assemblycheckpoints
Wiringwiththreecorepowercord: Wiringwithtwocorepowercord:
Usemarkedcableguidestolaywires.
Checkwiring(see"WiringdiagramsmodelCitiz"onpage118andfollowing).
Duringassemblyofthewatertankconnector(53)ontheplatform,eachofits3 latcheshastoengagewithanaudibleclick.
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8.4.5 Removingcoreunit
Payattentiontothefollowingsafetyadvicebeforeremovingthecoreunit.
Dangerofinsulationdamages(cuts)onwiresbetweencoreunitandplatform(phaseandneutralwire,groundwireifexisting).
Thesharpcasingedgesoftheplatform(markedredinaboveillustration)candamagetheinsulationofwires.
Donotstretchandreciprocatewiresoversharpedgeswhileremovingthecoreunit.
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Loosen4screws(41,ovalshapedhead)atthebottomsideofplatform.
Forcompleteremovalofthecoreunitproceedasfollows: Removewatertankconnector(53)fromplatform(seepage59).
Removeinsulatedfastonreceptacleofphasewire(15)frommainsswitch(54).
Disconnectadapterplug(15)ofneutralwire.
Ifpresent,disconnectgroundwire(15,partofthermoblockassembly).
Afterthisrepairstepthecoreunitcanbepulledoutoftheplat
formslightly(withstillconnectedhosesandwires).Nowthecoversofthecoreunitcanberemoved.
Thehosescanremainonthewatertankconnector.
Useapairofflatplierstopulloffinsulatingsleevewithreceptacle.
Theflatreceptacleonthegroundwirehasaspecialconnector
latching(seedetail).Pressdownleveratfirst,thenpulloffreceptacle.
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Assemblycheckpoints
Allcoversareassembledonthecoreunit.
Checkthatwiringbetweencoreunitandplatformisledthroughcablefixation(71).
Usemarkedcableguidestolaywiresinplatform(referto"Replacingpowercord"onpage62andfollowing).
Checkwiring(see"WiringdiagramsmodelCitiz"onpage118andfollowing).
Duringassemblyofthewatertankconnector(53)ontheplatform,eachofits3latcheshastoengagewithanaudibleclick.
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8.5 PlatformdisassemblymodelCitiz&milk
8.5.1 Generaldisassembly
Thisgeneraldisassembly isnecessarybeforetheremoval/disassemblyofacoreunitispossible, givesaccesstothecomponentsandwiringoftheplatform.
Takeawayallremovablepartsfromplatformandcoreunitcupsupport(8)withwastewatercontainer(6)capsulecontainer(7)driptray(48)withdripgrid(49)watertank(44)withcover(45)milkfrother(59)withlidandseal(62)cupstorage(58)whiskforhotmilk(60)springwhiskformilkfoam(61).
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Atthebottomsideofplatformloosen4screws(41,ovalshapedhead).
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Insertscrewdriverintorecessesandswivelscrewdrivertoremovebottomcover(51).
Latchesonthebottomcover(51)areredcircledforeasy
identification.
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Assemblycheckpoints
Checkif2rubberstoppersaremountedonwastewatercontainer(6).
Riskofdamage!Whileassemblingtheprotectivecoverattheplatform,takecarenottojamanywiresatthescrewconnections.
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8.5.2 Replacingwatertankconnector
Pulloffbothhosesfromwatertankconnector(53).
Releasethe3latchesaroundthewatertankconnectoroneaftertheotherbypressingthetopoftheirhooksoutwardswithascrewdriver(seedetail)andliftingthewatertankconnectoratthesametime.
Thewatertankconnector(53)isreplacedtogetherwithgasket,
clampingringandmetalsieve.
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1. Removegasket(a)fromwatertankconnector(53).2. Withthehelpofapairoftweezers,removeclampingring(b)andmetalsieve(c).3. Cleanorreplaceparts.
Assemblycheckpoints
Checkthatgasketisinsertedinwatertankconnector(53)correctly.
Duringassemblyofthewatertankconnectorontheplatform,eachofits3latcheshastoengagewithanaudibleclick.
Mindthedifferentdiametersofhosesforthewatertankconnector.
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8.5.3 Replacingmilkfrotherconnector
Remove3smallfastonreceptaclesfrommilkfrotherconnector(57).
Removemilkfrotherconnector(57)byreleasing2latchesandswivelconnectoroutfromunderthehook.
Assemblycheckpoints
Usemarkedcableguidestolaywires.
Checkwiringofmilkfrotherconnector(57),seedetail.
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8.5.4 Replacingmainsswitch
Remove4insulatedfastonreceptaclesfrommainsswitch(54).
Pressbladeofscrewdriverbetweenholderofmainsswitchandplatformcarefully.Liftholderwithscrewdriverslightly.Thenpressholderwithmainsswitch(54)inwardstillitcanberemoved.
Assemblycheckpoints
Themainsswitchholder(54)hasanotch(seedetail)toensureacorrectfittingposition.
Usemarkedcableguidestolaywires.
Checkwiringofmainsswitch(see"WiringdiagramsmodelCitiz&milk,EF 485/486"onpage124andfollowing).
Useapairofflatplierstopulloffinsulatingsleeveswith
receptacles.
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8.5.5 Replacingpowercord
Remove2insulatedfastonreceptacles(55)frommainsswitch(54).
Ifpresent,disconnectgroundwire(15,partofthermoblockassembly).
Unlatchcablebracket(56)withscrewdriver.
Useapairofflatplierstopulloffinsulatingsleevewithrecep
tacle.
Thecounterpart,aflatreceptacle,hasaspecialconnector
latching(seedetail).Pressdownleveratfirst,thenpulloffreceptacle.
Thecablebracketisundertension.Therefore,holdthecable
bracketwithyourfingerwhenunlatchingit.
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Assemblycheckpoints
Usemarkedcableguidestolaywires.
Checkwiringofpowercord(see"WiringdiagramsmodelCitiz&milk,EF 485/486"onpage124andfollowing).
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8.5.6 Removingcoreunit
Payattentiontothefollowingsafetyadvicebeforeremovingthecoreunit.
Dangerofinsulationdamages(cuts)onwiresbetweencoreunitandplatform(phaseandneutralwire,groundwireifexisting).
Thesharpcasingedgesoftheplatform(markedredinaboveillustration)candamagetheinsulationofwires.
Donotstretchandreciprocatewiresoversharpedgeswhileremovingthecoreunit.
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Loosen4screws(41,ovalshapedhead)atthebottomsideofplatform.
Forcompleteremovalofthecoreunitproceedasfollows:
Removebottomcover(refertopage56).
Removebothinsulatedfastonreceptacles(15,partofthermoblockassembly)frommainsswitch(54).
Afterthisrepairstepthecoreunitcanbepulledoutoftheplat
formslightly(withstillconnectedhosesandwires).Nowthecoversofthecoreunitcanberemoved.
Useapairofflatplierstopulloffinsulatingsleevewithrecep
tacle.
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Ifpresent,disconnectgroundwire(15,partofthermoblockassembly).
Ifthethermoblockorcoreunithastobereplaced,disconnectmilkfrotherconnector(57).Otherwisethecoreunitcanberemovedtogetherwiththisconnector(seepage73).
Removewatertankconnector(53,seepage71).
Assemblycheckpoints
Allcoversareassembledonthecoreunit.
Checkthatwiringbetweencoreunitandplatformisledthroughcablefixation(71).
Usemarkedcableguidestolaywires.
Checkwiringofmilkfrotherconnector(57),seedetail.
Checkwiringofmainsswitch(54),see"WiringdiagramsmodelCitiz&milk,EF 485/486"onpage124andfollowing.
Duringassemblyofthewatertankconnector(53)ontheplatform,eachofits3latcheshastoengagewithanaudibleclick.
Theflatreceptacleonthegroundwirehasaspecialconnector
latching(seedetail).Pressdownleveratfirst,thenpulloffreceptacle.
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8.6 PlatformdisassemblymodelCitiz&Co
8.6.1 Generaldisassembly
Thisgeneraldisassembly isnecessarybeforetheremoval/disassemblyofoneorbothcoreunitsispossible, givesaccesstothecomponentsandwiringoftheplatform.
Takeawayallremovablepartsfromplatformandcoreunitscupsupports(8)withwastewatercontainers(6)capsulecontainers(7)driptray(48)withdripgrid(49)watertank(44)withcover(45).
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Atthebottomsideofplatformloosen9screws(41,ovalshapedhead). Thecoreunitsarefastenedwithsomeofthesescrewsaswell.
Supportbothcoreunitssothattheirremainingscrewconnectiontotheplatformcannotbedamaged.
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Ifnecessaryuseascrewdrivertoremoveprotectivecover(51).
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Assemblycheckpoints
Checkif2rubberstoppersaremountedoneachwastewatercontainer(6).
Riskofdamage!Whileassemblingtheprotectivecoverattheplatform,takecarenottojamanywiresatthescrewconnections.
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8.6.2 Replacingwatertankconnector
Pulloffbothhoses(63,64)fromwatertankconnector(53).
Releasethe3latchesoneaftertheotherbypressingthetopoftheirhooksoutwardswithascrewdriver(seedetail)andliftingthewatertankconnectoratthesametime.
Removegasket(a)fromwatertankconnector(53).
Withthehelpofapairoftweezers,removeclampingring(b)andmetalsieve(c).
Cleanorreplaceparts.
Thewatertankconnector(53)isreplacedtogetherwithgasket,
clampingringandmetalsieve.
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Assemblycheckpoints
Duringassemblyofthewatertankconnector(53)ontheplatform,eachofits3latcheshastoengagewithanaudibleclick.
Insertgasketcorrectly(seedetail).
8.6.3 Replacingmainsswitch
Remove2insulatedfastonreceptaclesfrommainsswitch(54).
Pressbladeofscrewdriverbetweenholderofmainsswitchandplatformcarefully.Liftholderwithscrewdriverslightly.Thenpressholderwithmainsswitch(54)inwardstillitcanberemoved.
Useapairofflatplierstopulloffinsulatingsleeveswith
receptacles.
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Assemblycheckpoints
Usemarkedcableguidestolaywires.
Themainsswitchholder(54)hasanotch:correctfittingpositioniswithmainsswitchconnectionsnexttotheplatform(seedetail).
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8.6.4 Replacingpowercord
Removeinsulatedfastonreceptacleofphasewire(55)frommainsswitch(54).
Disconnectbothinsulatedadapterplugsofneutralwire(55).
Ifagroundwireispresent,disconnectbothflatreceptacles(15).
Unlatchcablebracket(56)withscrewdriver.
Useapairofflatplierstopulloffinsulatingsleevewithreceptacle.
Theflatreceptaclesofthegroundwireconnections(15)
haveaspecialconnectorlatching(seedetail).Pressdownleveratfirst,thenpulloffreceptacle.
Thecablebracketisundertension.Therefore,holdthecable
bracketwithyourfingerwhenunlatchingit.
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Assemblycheckpoints
Usemarkedcableguidestolaywires.
Checkwiringofpowercord(see"WiringdiagramsmodelCitiz&Co,EF487/488"onpage128andfollowing).
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8.6.5 Removingcoreunits
Foreachcoreunitloosen1remainingscrew(41,ovalshapedhead)atthebottomsideofplatform.
Forcompleteremovalofacoreunitproceedasfollows:4. Disconnect2insulatedadapterplugs(15,phaseandneutralwire).5. Ifagroundwire(15,partofthermoblock)ispresent,disconnectflatreceptacle.6. Openprotectivecase(69)withscrewdriveranddisconnectconnectioncable(b).7. Pulloutcoreunitfromplatformslightlytodisconnectsynchronizationcableplug(a)
fromelectroniccontrolboard.8. PulloffbothhosesfromangledHconnector(65).9. Liftcoreunitoutofplatform.
Bothcoreunitscanberemovedthesameway.
Afterthefirstrepairstepthecoreunitcanbepulledoutofthe
platformslightly(withstillconnectedhosesandwires).Nowthecoversofthecoreunitcanberemoved.
Theflatreceptacleonthegroundwirehasaspecialconnector
latching(seedetail).Pressdownleveratfirst,thenpulloffreceptacle.
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Assemblycheckpoints
Allcoversareassembledonthecoreunit.
Usemarkedcableguidestolaywires.
Checkwiring(see"WiringdiagramsmodelCitiz&Co,EF487/488"onpage128andfollowing).
Makesuretoreconnectsynchronizationcableplugs(a)onelectroniccontrolboards.
MindthehosepositionsonangledHconnector(65).
Checkthatwiringbetweencoreunitsandplatformisledthroughcablefixations(71).
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8.7 Disassemblyofcoreunit,Crange
8.7.1 Generaldisassembly
Thecoreunithastoberemovedfromtheplatformatfirst(seeaccordingchapter"platformdisassembly").Itispossibletoperformageneraldisassemblyofthecoreunitwithintacthoseandwireconnectionstotheplatform(e.g.forrepair,leakagecheck).
Removeleftsidepanel
1. Insertdisassemblytoolbetweenbottomofleftsidepanel(3)andchassis(1).2. Swiveldisassemblytooltilllatchopensatthebottom.
3. Insertdisassemblytoolintolowergapatthefront.4. Carefullyturndisassemblytoolslightlytotherighttoopenthelatch.
Aftergeneraldisassemblyofthecoreunitarepairing/
serviceholderdeviceishelpfulforfurtherrepairwork.
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5. Insertdisassemblytoollaterallyintothegapabove.6. Carefullyturndisassemblytoolslightlyforwardtoopenthenextlatch.7. Movedisassemblytoolupwardsandopenremaininglatchthesameway.
8. Atthebackinsertdisassemblytoolintoshadowgapofleftsidepanel.9. Swiveldisassemblytoolcarefullytoopenfirstlatch.10. Movedisassemblytoolupwardsandopentheothertwolatchesthesameway.
Insertdisassemblytoolatrightanglesonly.Otherwisethe
shadowgapcanbedamaged.
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11. Swingupandremoveleftsidepanel.
Removerightsidepanel
Removetherightsidepanel(4)inthesamesequenceasfortheleftsidepanel(3).
Removeblind
1. Open2latchesoneachsideofblind(9)withscrewdriver.2. Removeblindtogetherwithcoffeebuttonsandwiring.
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Removecover
1. Useascrewdrivertorelease2latchesoneachside.2. Liftandremovecover(2).
Removefrontcoverwithoutlet
1. Release3latchesonfrontcoverbyhandandpressoutoutlet(5,seedetail).
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Assemblycheckpoints
Foreasyidentification,thesidepanelsaremarkedwith"RIGHT"or"LEFT"ontheinside.
Checkifdamper(10)forclosinghandleisinstalledoncover(2).
Checkthatallconnectionwirestotheplatformareledthroughcablefixation(71).
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8.7.2 Replacingcompactbrewingunit
Useapairofpointedplierstoremoveconnectorclip(34)andhose(29)withOring(36).
UseTorxscrewdriverTX10toloosen4screws(40).
Afterremovalofcompactbrewingunit(14),release2latcheswithscrewdriverandremovesteamcover(13).
Openclosinghandletogetaccesstohoseconnection.
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Assemblycheckpoints
Atfirstassemblesteamcover(13)onnewcompactbrewingunit(14)asshown.
ReplaceOring(36)ofhoseconnectiononcompactbrewingunit.
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8.7.3 Replacingpump
General
Thepump(18)canonlybereplacedasassemblyconsistingof pump,prewiredwiththermostat(19,seebelow)orthermalcutofffuse(a) 2pumpsupports(21,22) pumpcover(25).
Ablownthermalcutofffuse(a)hastobereplacedtogetherwiththepumpassembly.Atrippedthermostat(19)resetsafterabout30minautomatically.
Thepumpisequippedeitherwithathermalcutofffuse
orathermostatdependingonthevoltagerangeormanufacturer.
a) Thermalcutofffuse 19)Thermostatwithretainingclip
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Replacingpumpassembly
Removebothhoses(28,32)frompump.Useapairofpointedplierstoremoveconnectorclip(35)withOring(36).
Removecover(43)fromelectroniccontrolboardanddisconnect2fastonreceptaclesofpumpwires.
Pulloutsupports(21,22)togetherwithcompletepumpassembly.
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Assemblycheckpoints
Adjustpositionofpumpconnector(23)towardshose(28)ifnecessary.
Checkconditionofsupports(21,22).Replacebrittlesupports.
Passhose(28)frompumptoselfprimingdevicethroughlugonpumpcover(25).
Useacableclamp(a)tofixpumpwires(differentlocationdependingonthermofuse/thermostat).
ThewhiteplasticIidonthepumpisrotatableandhasasquare
seatfortheforkwrench.
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8.7.4 Replacingflowmeter
Assemblycheckpoint
Layconnectioncabletoflowmeter(27)inbracket.
Mindthehosepositionsontheflowmeter.
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8.7.5 Replacingautomaticprimingdevice(APD)
Useapairofpointedplierstoremoveconnectorclips(34,35)fromautomaticprimingdevice(26).
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Assemblycheckpoints
ReplacebothOrings(36)togetherwithautomaticprimingdevice(26).
Inserthose(28)intubeguiding(30).
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8.7.6 ReplacingthermoblockwithNTCsensorandfinewirefuse(s)
Adefectthermoblockcanonlybereplacedwithanassemblyconsistingof thermoblock,prewiredwithNTCtemperaturesensor,finewirefuse(s)andground
wire(onlyifrequired), thermoblocksupport.
UseTorxscrewdriverTX10toloosenscrew(40).
Release3latchesandpulloutsupportwiththermoblockassembly(15).
Dependingonnationalregulations,oneortwofinewire
fusesaremountedonthethermoblock(seeWiringdiagramsonpage 118andfollowing).
DonotstressNTCcablewhenremovingsupport.
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ReplacingNTCtemperaturesensor
UnplugNTCsensorcablefromelectriccontrolboard(42)first.
TestNTCtemperaturesensor(39),seeNTCtemperaturesensorfunctionalityonpage 139.
AssemblycheckpointNTCtemperaturesensor
TightenthenewNTCtemperaturesensor(39)andspringringwithatorquewrench(80100Ncm).
Replacingfinewirefuse(s)
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Assemblycheckpointsfinewirefuse(s)
Whenmountingasafetyclip(a)onthethermoblock(15),makesurethatthehousingofthefinewirefuse(b)ispositionedexactlybelowthesafetyclip.
Tightenfasteningscrewandspringringwithatorquewrench(150(+30/0)Ncm).
Assemblycheckpointsthermoblock
Allwiresfromthermoblocktoplatformmustbeledthroughthebracket(a)atthebottomofthesupport.
Theblackgrommets(b)ontheelectricalthermoblockconnectionsareslittedattheend.IfanangledFastonreceptacle(c)isused,makesurethatitswirerunsthroughthisslit.
Tightencentralfasteningscrew(d)withatorquewrench(150(+30/0)Ncm).
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8.7.7 Replacingelectroniccontrolboardwithbuttonprints
RemoveatfirstNTCconnectorfromelectroniccontrolboard,connectorcablefromflowmeter,electroniclid(43),fastonreceptaclesfromelectroniccontrolboard.
Inserttipofscrewdriverbetweenchassis(1)andprotectivecaseofelectroniccontrolboard(42)toreleaselatches.Thenpulloutassembly.
Thereplacementboardisequippedwithprotectivehous
ingandcover.
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Replacingbuttonprints/coffeebuttons
Assemblycheckpoints
Afterassemblychecktheplugarrangementoftheelectroniccontrolboard(seeWiringdiagramsonpage 118andfollowing.
Layconnectionwirestobuttonprintsinbracketsandcableguidelikeshown.
Forinstallingandconnectinganewelectroniccontrol
board,theservicetechnicianmustbeearthedwithagroundingband.
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8.8 Disassemblyofcoreunit,Drange
8.8.1 Generaldisassembly
Thecoreunithastoberemovedfromtheplatformatfirst(seeaccordingchapter"platformdisassembly").Itispossibletoperformageneraldisassemblyofthecoreunitwithintacthoseandwireconnectionstotheplatform(forrepair,leakagechecketc.).
Removeoutlet
1. Openclosinghandle.2. Pressoutlet(5)sidewardsbyhandcarefully.3. Insertdisassemblytoolintogapbetweenoutletandrightsidepanel(4).
Aftergeneraldisassemblyofthecoreunitarepairing/serv
iceholderdeviceishelpfulforfurtherrepairwork.
Thedisassemblytoolisnecessaryforremovingoutletand
sidepanelsundamaged.
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4. Holdandpulloutlet.5. Atthesametimemovedisassemblytoolupwards.6. Carefullyturndisassemblytoolslightlybackwardtoopenthelatch.7. Insertdisassemblytoolintogapontheothersideoftheoutlet.8. Movedisassemblytoolupwardsandcarefullyturnitslightlybackwardtoopenthe
latch.9. Removeoutlet.
Removerightsidepanel
10. Insertdisassemblytoolbetweenbottomofrightsidepanel(4)andchassis.11. Swiveldisassemblytooltillsnapconnectionatthefrontopens.12. Relocatedisassemblytoolandrepeatproceduretoopenlatchatthebottomofthe
sidepanel.
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13. Insertdisassemblytoollaterallyintogapatthefront.14. Carefullyturndisassemblytoolslightlyforwardtoopenthefirstlatch.15. Movedisassemblytoolupwardsandopentheothertwolatchesthesameway.
16. Atthebackinsertdisassemblytoolintoshadowgapofrightsidepanel.17. Swiveldisassemblytoolcarefullytoopenfirstlatch.18. Movedisassemblytoolupwardsandrepeatprocedurefortheother2latches.
Insertdisassemblytoolatrightanglesonly.Otherwisethe
shadowgapcanbedamaged.
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19. Swingupandremoverightsidepanel.
Removeleftsidepanel
20. Insertdisassemblytoolbetweenbottomofleftsidepanel(3)andchassis.21. Swiveldisassemblytooltilllatchatthefrontopens.22. Relocatedisassemblytoolandrepeatproceduretoopenlatchatthebottomofthe
sidepanel.
Closinghandlemustbeopened.
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23. Insertdisassemblytoollaterallyintogapatthefront.24. Carefullyturndisassemblytoolslightlyforwardtoopenthefirstlatch.25. Movedisassemblytoolupwardsandopentheothertwolatchesthesameway.
26. Atthebackinsertdisassemblytoolintoshadowgapofleftsidepanel.27. Swiveldisassemblytoolcarefullytoopenfirstlatch.28. Movedisassemblytoolupwardsandrepeatprocedurefortheother2latches.
Insertdisassemblytoolatrightanglesonly.Otherwisethe
shadowgapcanbedamaged.
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29. Swingupandremoveleftsidepanel.
Removecover(2)
1. Removebothcoffeebuttons(11,12)andprints(42)outofholder.2. Removewiringofcoffeebuttonprintsfromcableguides.
Closinghandleshouldbeopened.
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3. Useascrewdrivertorelease4latches.4. Openclosinghandle.5. Liftandremovecover(2).
Assemblycheckpoints
Checkifdamper(10)forclosinghandleisinstalledoncover(2).
Forcorrectlayoutofthewirestothecoffeebuttonprints,seeReplacingelectroniccontrolboardwithbuttonprintsonpage 116.
Assembleleftsidepanel(3)first.
Insertrightsidepanel(4)intohingesatthetopoftheleftsidepanel.Thenfolddownrightsidepanelandclicklatches.
Checkthatalllatchesareengaged.
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8.8.2 Replacingelectroniccontrolboardwithbuttonprints
Refertopage114forremovingcover(2).Thereplacementboard(42)isequippedwithprotec
tivehousingandcover.
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RemovefirstNTCconnectorfromelectroniccontrolboard,connectorcablefromflowmeter,electroniclid(43),fastonreceptaclesfromelectroniccontrolboard.
Inserttipofscrewdriverbetweenchassis(1)andprotectivecaseofelectroniccontrolboard(42)toreleaselatches.Thenpulloutassembly.
Assemblycheckpoints
Theleftandrightbuttonprints(42)aremarkedwith"L"or"R"foreasyidentification.
Afterassemblychecktheplugarrangementofthemainboard(seeWiringdiagramsonpage 118andfollowing).
Layconnectionwirestobuttonprintsinbracketsandcableguideslikeshown.
Forinstall ingandconnectinganewelectroniccontrol
board,theservicetechnicianmustbeearthedwithagroundingband.
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8.9 Wiringdiagrams
8.9.1 WiringdiagramsmodelCitiz
Wiringdiagram220V240VIECmodelCitiz,EF483/484
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Wiringdiagram120VUL(USA/Canada)modelCitiz,EF483/484
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Wiringdiagram120V127VIEC(Brazil)modelCitiz,EF483/484
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Wiringdiagram120V127VIEC(Mexico)modelCitiz,EF483/484
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Wiringdiagram110VIEC(Taiwan)modelCitiz,EF483/484
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Wiringdiagram100VIEC(Japan)modelCitiz,EF483/484
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R E P A I R S
8.9.2 WiringdiagramsmodelCitiz&milk,EF 485/486
Wiringdiagram220V240VIECmodelCitiz&milk,EF 485/486
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Wiringdiagram120VUL(USA/Canada)modelCitiz&milk,EF 485/486
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Wiringdiagram120V127VIEC(Brazil)modelCitiz&milk,EF 485/486
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Wiringdiagram120V127VIEC(Mexico)modelCitiz&milk,EF 485/486
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8.9.3 WiringdiagramsmodelCitiz&Co,EF487/488
Wiringdiagram220V240VIECcoreunit,modelCitiz&Co,EF487/488
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Wiringdiagram220V240VIECmodelCitiz&Co,EF487/488
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F U N C T I O N T E S T S
9 F UNC T I ON T E S T S
9.1 Safetyinstructions
Somefunctiontestsareperformedwithanenergized,partlyopenedcoffeemachine.
9.2 Requiredequipment
9.2.1 Overview
Tosimplifymatters,themodelCitizwithcoreunit"Crange"is
usedtoexemplifythroughoutthischapter.
Dangerofelectrocution!Mainsvoltageinsidethecoffeemachine.Donottouchanylivepartwhileperformingtests.
Dangerofburns!Hotpartsandwaterunderpressureinsidethecoffeemachine.Donottouchanyhotpartswhilecheckingforleakages!Alwayswearprotectivegoggles.
Symbolicillustrationoffunctiontestequipment.
1) Pressuregauge(EFRno.16195)
2) Citizpressuregaugeadapter3) Digitalmultimeter
(forNTCtemperaturesensortest)
4) Electronicthermometer(ordigitalmultimetersuitablefortemperaturemeasurement)
5) Timer6) Measuringbeaker7) Testequipmentforprotectiveearthcon
tinuitytestandprotectiveinsulationtest
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F U N C T I O N T E S T S
9.2.2 Citizpressuregaugeadapter
ThispressuregaugeadapterisdesignedfortheCitizcoffeemachines.
Thepressuregaugeadapterhas2parts: Aconnectingunit(3)withasealingconethatisinsertedinthecapsulecageofthe
brewingunit.
Ahandactuatedfixationunit(4)tolockandsealthecompletepressuregaugeadapterinthebrewingunit.
1) Quickactioncouplingforpressurehose
2) Operatinglever
3) Connectingunit4) Fixationunit
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F U N C T I O N T E S T S
9.3 Measureflowrate
Thepressureadaptermustsitfirmlyinthecapsulebay.
1) Fillandinsertwatertank.2) Openclosinghandle.
3) Insertconnectingunitofpressureadapterinto
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