DeLonghi NESCAFE Dolce Gusto EDG 305 User manual

Version 1.0 en
S E R V I C E MANUA L
BEVE R A G E C E N T E R
EDG
305

Servicemanual
2
C O N T E N T S
Maincomponents .................................................................................................. 5
Overviewofexternalparts............................................................................................ 5
Overviewofinternalparts............................................................................................. 6
Overviewofratingplates.............................................................................................. 7
DeLonghiratingplate .............................................................................................. 7
Krupsratingplate ..................................................................................................... 8
Watercircuit.................................................................................................................. 9
Technicaldata ............................................................................................................ 10
Operating ................................................................................................................ 12
Machinestatus ........................................................................................................... 12
Preparation,firstuse .................................................................................................. 13
Preparingabeverage................................................................................................. 15
Economymode(autoshutofffunction) ..................................................................... 16
Emptyfluidsystemforshipping.................................................................................. 17
Troubleshooting................................................................................................... 18
Checklist..................................................................................................................... 18
Repair ....................................................................................................................... 22
General....................................................................................................................... 22
Safetyinformation ...................................................................................................... 22
Toolsandrepairaccessories...................................................................................... 23
Repairworkwithoutdisassemblingthemachine ....................................................... 23
Removing/replacingneedleplate,deblockingofneedle...................................... 23
Generaldisassembly.................................................................................................. 26
Replacingwatertankconnector ................................................................................. 28
Assemblytip........................................................................................................... 28
Replacingflowmeter................................................................................................... 29
Replacingpump ......................................................................................................... 30
Assemblytips ......................................................................................................... 32
ReplacingNTCtemperaturesensor........................................................................... 34
Replacingpowercordwiththermofuses ................................................................... 35
Assemblytips ......................................................................................................... 37
Replacingthermoblock............................................................................................... 38
Assemblytips ......................................................................................................... 40
Replacingelectronicmainboard ................................................................................. 42
Assemblytips ......................................................................................................... 42
Replacingextractionhead.......................................................................................... 43
Assemblytips ......................................................................................................... 44
Replacinglockinghandle ........................................................................................... 45
Assemblytips ......................................................................................................... 46
Replacingmagnet ...................................................................................................... 47
Assemblytips ......................................................................................................... 47
Wiringdiagram ..................................................................................................... 48

Service manual 3
Final testing............................................................................................................49
Test equipment............................................................................................................ 49
Heating up time ........................................................................................................... 50
Flow rate (at 8 bar) / water temperature...................................................................... 50
Maximal pressure / leakage check.............................................................................. 52
Final inspections ..................................................................................................53
General ....................................................................................................................... 53
Safety instructions....................................................................................................... 54
Protective earthing (PE) resistance test...................................................................... 54
Insulation resistance test............................................................................................. 55
Earth leakage current test........................................................................................... 56
Leakage current test ................................................................................................... 57
Maintenance...........................................................................................................58
Descaling .................................................................................................................... 58
Daily care and final cleaning ....................................................................................... 62

Servicemanual
4
P R E F A C E
ThepurposeofthisServiceManualistoprovidetheservicepersonnelwithallneces
saryinformationwithregardstocorrecthandling,maintenanceandrepairoftheMiniMe
beveragecenter.
ThisServiceManualshouldbeusedbythetechniciansasavaluableaidtoguarantee
thepermanentreadinessforuseofthemachine.Inordertotakefulladvantageofallthe
functions,itisabsolutelynecessarytofollowtheinstructionsinthismanual.
Foraquickinformationaccess,thisservicemanualisalsoavailableintheinternetasa
PDForHTMLfile.
TherequiredutilitysoftwaretoreadPDFfiles(AdobeReader®)forPCsandMAC
computerscanbedownloaded(underhttp://www.adobe.com)forfreepleaseclickthe
logo:
Please keep this
manual together
with the corresponding
service documentation.
This way you are assured
to have the necessary
information.
If you display the
service manual on a
computer you can click
on the contents or on
page references to jump
to the required informa-
tion immediately.

Servicemanual5
M A I N  C O M P O N E N T S
M A I N  C O M P O N E N T S
Overviewofexternalparts
This is the Krups
machine version.
The Krups machine
version is also shown in
the repair chapter.
1. Watertank
2. Selectionlever
3. Cold
4. Stop
5. Hot
6. Volumeselector
7. Lockinghandle
8. Capsuleholder
9. Powerbutton
10. Dripgrid
11. Driptray
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Servicemanual
6
M A I N  C O M P O N E N T S
Overviewofinternalparts
1. Powerbutton
2. Lockinglever
3. Needleplate
4. Hotcoldselectionlever
5. Watertankconnector
6. Flowmeter
7. Waterpump
8. Thermoblock
9. NTCtemperaturesensor
10. Thermofuses(2x)
11. Electronicmainboard
12. Hotwaterpressurehose
13. Coldwaterpressurehose
14. Reedsensor
15. Valvemicroswitch
16. Axle
17. Mainhousing
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Servicemanual7
M A I N  C O M P O N E N T S
Overviewofratingplates
DeLonghiratingplate
Theratingplate
• canbefoundontheundersideofthemachine,
• carriesthefollowinginformation:
The rating plate is
laser-engraved.
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Servicemanual9
M A I N  C O M P O N E N T S
Watercircuit
1. Watertankwithvalve
2. Filterandconnector
3. Flowmeter
4. Pump
5. Thermoblock
6. Selectionlever
7. Fconnector
8. Capsuleholder
9. Needleplate
10. Needle
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Servicemanual
10
M A I N  C O M P O N E N T S
Technicaldata
Mainsvoltage
Europe(UK,CH,DE,AT,FR,ES,PT,IT,NL,LU,BE,NO,SE,FI,DK,
GR,CZ,SK,PL,HU,RU,UA,LT,LV,EE,BG,RO,SI,BiH,SRB,HR) ...230V/50Hz
USA/Canada ...........................................................................................120V/60Hz
HongKong ...................................................................................... 220240V/50Hz
Mexico ..................................................................................................127V/50/60Hz
Chile ..........................................................................................................220V/50Hz
Japan.....................................................................................................100V/50/60Hz
Approvals ......................................................................................... CE,UL,CUL,JET
Powerconsumption ............................................................................... max.1’500W
Ratings(approx.)
Preheating ........................................................................................................10.0Wh
1smallcup(40ml,Espresso) ............................................................................4.6Wh
1largecup(110ml,Lungo)...............................................................................12.0Wh
1travelmug(350ml,Powder) .......................................................................... 30.0Wh
Economymode .....................................................................................................0.1W
Energyconsumption(CECED/FEA2009method)
Energyefficiencyclasslevel ........................................................................................A
Dailyenergyconsumption....................................................................................93Wh
Annualenergyconsumption............................................................................... 34kWh
Flowrates(±50ml/min)
R&G/Espresso................................................................210ml/minatapprox.8.0bar
R&G/Lungo.....................................................................230ml/minatapprox.7.5bar
R&G/Cappuccino............................................................210ml/minatapprox.8.5bar
R&G/LatteMacchiato .....................................................210ml/minatapprox.7.5bar
Powder/Milk....................................................................320ml/minatapprox.3.5bar
Capacities
Watertank ................................................................................................................0,8l
Driptray...................................................................................................approx.140ml
Temperatures
Safetytemperature(thermalcutoff) ..................................................... 133°C(271°F)
Hotbeverageoutlettemperature......................................85°C±5°C(185°F±41°F)
Permissibleambienttemperature...................................... 5°C45°C(41°F113°F)

Servicemanual11
M A I N  C O M P O N E N T S
Variousdata
Preheatingtime..................................................................................... approx.40sec.
Pumppressuremax. ................................................................................ 13.5±1.5bar
Noise........................................................................................................max.65dB(A)
Dimensions[mm]
Powercordlength .........................................................................................approx.1m
Weightofmachine(withoutwater).........................................................................2.5kg
Distancefromdripgridtocoffeeoutlet[mm]
Espresso ...............................................................................................................80mm
Mug .....................................................................................................................125mm
Tallglass .............................................................................................................155mm
Highercup...........................................................................................................180mm
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Servicemanual
12
O P E R A T I N G
O P E R A T I N G
Machinestatus
Afterswitchingon,anautomaticselftestisperformedtocheckifthe
 NTCisconnected,
 NTCisnotshortcircuited,
 thethermoblockreachestheworkingtemperatureinabout40seconds,
 theselectionleverisinmiddleposition.
OperatingmodesanddetectedfailuresareindicatedbyLEDsignalsofthepowerbutton
aslistedinthefollowingtable:
Operatingmodes Powerbutton LEDsignals
Economymode/Off —
Heatingup/selftest red,blinking,approx.40sec.
Ready green,steady
Afterbeveragepreparation
(cooldowntime) red,blinking,approx.10sec.
Descalingreadyandduring
descalingcycle green,slowblinking
Errormode red,rapidblinking

Servicemanual13
O P E R A T I N G
Preparation,firstuse
Thenewmachinehastoberinsedproperlybeforefirstuseaccordingtothefollowing
sequence:
The machine will
not work without a
capsule holder inserted.
Do not insert a
capsule yet.
The pre-heating
time is approx.
40 sec. The power
button lights in steady
green when the machine
is ready.
1. Rinsewatertankatfirst.Thenfill
watertankuptomax.levelwithfresh
drinkingwater.
2. Insertwatertankintomachine.
3. Openlockinghandleandinsert
emptycapsuleholder.Closelocking
handle.
4. Placeemptyjugunderoutlet.
5. Makesurethattheselectionleveris
in"STOP"position.
6. Connectpowerplugtomainspower
socket.
7. Switchmachineon.Whilemachineis
heatingup,powerbuttonstarts
blinkingred.
8. Afterapprox.40seconds,power
buttonlightssteadygreenand
machineisready.
9. Setthevolumeselectortomaximum
level.
10. Moveselectionlevertothelefttostart
rinsingthemachine.
11. Waituntilthelevercomesbacktothe
middleandrinsingstops.
12. Powerbuttonblinksredforabout10
secondsattheendofrinsing.

Servicemanual
14
O P E R A T I N G
If no water comes
out and machine
switches to error mode:
• Switch machine off
and on again.
• Check if water tank is
full and inserted
correctly.
• Move selectionlever
again to the left to fill
the empty fluid
system.
13. Movelevertotherighttostart
rinsing.
14. Waituntilthelevercomesbacktothe
middleandextractionstops.Empty
andcleanthejug.
15. Emptyandcleanthewatertankwith
cleancleaningtools.
16. Filltankwithfreshdrinkingwaterup
tomaximumlevel.
17. Insertwatertankintomachine.
18. Placedripgridondriptrayandinsert
atthedesiredposition.

Servicemanual15
O P E R A T I N G
Preparingabeverage
The drip tray is
height-adjustable to
3 levels.
Choose an
appropriate cup
size for beverage.
Users allergic to
dairy products:
clean capsule holder
under running water
before use.
For capsule product
range see user man-
ual or:
www.dolce-gusto.com
For filling quantities
see bargraph symbol
- on capsule,
- or on product package,
- or in product overview
in user manual.
The flow speed
resp. preparation
time depends on the
used capsule.
1. Switchmachineon.
2. Whilemachineisheatingup,power
buttonstartsblinkingred.
3. Afterapprox.40seconds,power
buttonlightssteadygreenand
machineisready.
4. Adjustdriptraypositionaccordingto
thechosenbeverage.
5. Placecupondriptray.
6. Openlockinghandleandpullout
capsuleholder.
7. Insertcapsuleincapsuleholderand
putitbackintothemachine.
8. Closelockinghandle.
9. Setthebeveragevolumewiththe
volumeselector.Followtherecom
mendationonthecapsuleorset
volumetoyourowntaste.
10. Movelevertotherightforhotbever
ages,totheleftforcoldbeverages.
11. Beveragepreparationstarts.
12. Waituntillevercomesbacktothe
middleandextractionstops.
13. Extractioncanalsobestopped
manuallybymovingtheleverback.
14. Whenpreparationisfinished,power
buttonblinksredforabout10s.
15. Duringthattimedonotopenthe
lockinghandle!
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Servicemanual
16
O P E R A T I N G
Economymode(autoshutofffunction)
After5minuteswithoutoperation,themachineswitchesitselfOFFautomatically.
Thisfeaturehelpstosaveelectricitybyreducingtheamountofpowerthemachine
drawswhileitisnotinuseandhelpstoprotectthelifeofthemachine.
Toresumeoperationsimplypresspowerbutton.
Danger of damage
and hot water /
product splashes.
Do not open locking
handle prematurely.
Risk of burning
from hot capsule.
Do not touch capsule
immediately after use. 16. Takecupfromdriptray.
17. Openthelockinghandle.
18. Pulloutcapsuleholderandremove
usedcapsule.
19. Putusedcapsuleincapsulebin.
20. Rinsebothsidesofthecapsule
holderwithwaterfrombothsides
anddry.
21. Insertcapsuleholderintomachine.
Enjoyyourbeverage!
For longer periods
of standstill (e.g.
vacation etc.):
• Plug out power cord.
• Empty water tank.

Servicemanual17
O P E R A T I N G
Emptyfluidsystemforshipping
For shipping a
machine, it is
important to empty the
fluid system.
The machine will
not work without
inserted capsule holder.
Prolonged dry-
running can dam-
age the pump.
Never use a wet
sponge to clean the
head of the machine!
Send machine back
with capsule holder
and all provided accesso-
ries. For packing see
page 64.
1. Emptywatertankanddriptray. 2. Checkthatcapsuleholderisempty.
3. Reinstallcapsuleholder.
4. Placeajugunderoutlet.
5. Setvolumeselectortominimum
level.
6. Pushselectorlevertotheleft.
7. Afterdetectingnomorewaterflow,
themachineswitchestoerrormode.
8. Switchoffmachine.
9. Switchonmachineandpush
selectorlevertotheright.
10. Afterdetectingnomorewaterflow,
themachineswitchestoerrormode.
11. Switchoffmachine.
12. Removeandemptyjug.
13. Cleanmachineandallaccessories
withasoftdampcloth.Useonly
cleancleaningtools.

Servicemanual
18
T R O U B L E S H O O T I N G
TR O U B L E S H O O T I N G
Checklist
Thechecklistenablesyoutorapidlylocatefaultsonthemachineandtoinitiateappropriaterepairaction.
Followthecheckprocedure.Repairanyfaultsfoundandcheckifthemachineisoperatingperfectly.
Check
procedure Symptoms Action/repairwork Furtheraction/ repairwork
1Checkgeneral
conditionofmachine
with accessoriesand
lookforvisible
damage
1.1Partsofhousingare
brokenordamaged(e.g.snap
connectionsorlatches)
YESReplacepartsifnecessary
NOGotopoint1.2 seepage26andfollowing
1.2Accessoriesarebrokenor
damaged
YESReplaceallbrokenor
damagedaccessories
NOGotopoint1.3
—
1.4Powercordisdamaged YESReplacepowercord
NOGotopoint2 seepage35
2Checkmechanical
elements
2.1Capsuleholderinserts
correctlyintotheextraction
head?
YESGotopoint2.2
NOReplacecapsuleholder NOCheckneedleplate
(seepage23)
2.2Capsuleholdermagnetic
atrightcorneronbackside?
YESGotopoint2.3
NOReplacecapsuleholder. —
2.3Magnetonbacksideof
capsuleholder:Epoxyresin
covercrackedorbrittle?
YESReplacecapsuleholder
NOGotopoint2.4 —
2.4Driptrayinsertscorrectly
inall3levels?
YESGotopoint2.5
NOCheckifdriptrayisdeformed
ordamaged,replaceifnecessary.
—
2.5Damagedorbroken
lockinghandle?
YESreplaceextractionheadif
necessary
NOGotopoint2.6
seepage48
2.6Lockinghandlecanbe
pulledupwhilemakinga
beverage?
YESReplacetheextractionhead
NOGotopoint3
seepage48
3Fillwatertank
3.1Watertankisleakingon
transport
YESReplacewatertank
NOGotopoint3.2 —
3.2Watertankisleakingwhen
itisinsertedinthemachine
YESTrynewwatertankand
checkifitisstillleaking
NOGotopoint4
YESReplacewatertank
connector(seepage28)
NOReplaceoldwatertank

Servicemanual19
T R O U B L E S H O O T I N G
4Plugintomains
andswitchON
machine
4.1Machine(withcapsule
holderinserted)isnot
working nofunction
YESa)Checkifpowercordis
functional
YESGotopointb)
NOReplaceit(seepage35)
YESb)Checkifallelectrical
connectorsareconnected
YESGotopointc)
NOConnectthem(seepage
48)
YESc)Checkifthermoblock’s
thermalcutofffuses(133°C)are
defective
YESReplacepowercordand
electronicmainboard.Ifneces
saryreplacealsothether
moblock(seepage58).
NOGotopointd)
YESd)Checkif powerbuttonand
itsindicator(LED)isfunctional
YESGotopointe)
NOReplaceelectronicmain
board(seepage58)
YESe)Checkifreedcontactis
functional
YESGotopointf)
NOReplaceextractionhead
(seepage48)
YESf)Checkifselectionlever
movesfreely
YESGotopointg)
NOReplacelockinghandle
(seepage45)
YESg)Checkifpumpstartsto
workifbargraphdisplaylightsup
andselectionleverismovedtothe
left(coldwater)
YESGotopointh)
NOReplacepump(seepage
30)
YESh)Checkifpumpstartsto
workifbargraphdisplaylightsup
andselectionleverismovedtothe
right(hotwater)
YESGotopoint4.3
NOReplacetheextractionhead
(valveswitchmightbebroken),
seepage48.Ifstillnotworking,
replacealsoelectronicmain
board,seepage58.
YESi)Checkifpump'sthermal
cutofffuse(98°C)isdefective
YESReplacepump(seepage
30)
NOReplacepump(seepage
30)orelectronicmainboard(see
page58)orextractionhead(see
page48)
4.2Indicator(LED)flashesred
3 timesasecond(errormode)
YESa)CheckifNTCtemperature
sensorisfunctional
NOReplaceNTCtemperature
sensor(seepage34)
YESGotopointb)
YESb)Checkifelectricalwires
arefunctional
NOGotopoint4.3
YESReplaceelectronicmain
board(seepage58)
NOReplacedefectivewire(s),
seepage48
4.3Machineisworking
withoutcapsuleholder
YESReplacetheextractionhead
NOGotopoint4.4
seepage48
4.4Machineishissingafter
heatingup.
YESReplacetheextractionhead
NOGotopoint5
seepage48
Check
procedure Symptoms Action/repairwork Furtheraction/ repairwork

Servicemanual
20
T R O U B L E S H O O T I N G
5Checkswhile
preparingabeverage
(seepage15)
5.1Noextractionpossible(no
wateratcoffeeoutlet)
YESa)Watertankisempty? YESFillwatertank
NOGotopointb)
YESb)Watertankiscorrectly
inserted?
YESGotopointc)
NOInsertwatertankcorrectly
YESc)Filterinwatertank
connectorisblockedornotinright
position?
YESCleanfilterorreplace
watertankconnectorifneces
sary(seepage28)
NOGotopointd)
YESd)Fluidsystemisempty?
YESPrimefluidsystemwithout
acapsule:Moveselectionlever
totheleftandrightinmanual
modesuccessively.
NOGotopointe)
YESe)Fluidsystemisblockedby
scale?
YESDescalethefluidsystem
(seepage58)
NOGotopointf)
YESf)Needleisstillcloggedafter
descaling?
YESDeblockneedlewith
cleaningneedle(seepage23)
NOReplaceneedleplate(see
page48)
5.2Hotwatertemperatureis
toolow(lessthan70°C/
158°F)
YESa)CheckifNTCtemperature
sensorisfunctional
NOChangeNTCtemperature
sensor(seepage34)
YESGotopointb)
YESb)Fluidsystemisscaled?
YESDescalefluidsystem(see
page58)andgottopointc)
NOReplaceelectronicmain
board(seepage58)
YESc)Valvemalfunction?
YESReplaceextractionhead
(seepage48)
NOGotopointd)
YESd)Flowrateofpumpoutof
range?
YESReplacepump(seepage
30)
NOGotopoint5.3
5.3Hotwatertemperatureis
toohigh(morethan95°C/
203°F)
YESa)CheckifNTCtemperature
sensorisfunctional
NOChangeNTCtemperature
sensor(seepage34)
YESGotopointb)
YESb)Fluidsystemisscaled?
YESDescalefluidsystem(see
page58)
NOGotopoint5.5
YESd)Flowrateofpumpisoutof
range?
YESReplacepump(seepage
30)
NOGotopoint5.4
5.4Coldwatertemperature
toohigh(5°C/41°Fmore
thanwatertanktemperature)
YESValvemalfunction?
NOGotopoint5.5
YESReplaceextractionhead
(seepage48)
NOGotopoint5.5
5.5Thecapsuledoesnotfall
outofthecapsuleholder
YESCheckcapsuleandcapsule
holderfordeformations
NOGotopoint6
YESReplacecapsuleholderif
necessary
Check
procedure Symptoms Action/repairwork Furtheraction/ repairwork

Servicemanual21
T R O U B L E S H O O T I N G
6Checkforleaks
and/orflowrate
whilepreparinga
beverage(seepage
15)
6.1Leakageatextraction
head
YESa)Capsulehasmultiple
perforations?
NOGotopoint6.2
YESPerforatecapsuleonly
once,seeusermanual
NOReplaceextractionhead
(seepage48)
6.2Waterunderneaththe
machine
YESDefectivepressurehoses?
NOGotopoint6.3
YESReplacedefectivepres
surehoseswithclips
NOGotopoint6.4
6.3Flowrateoutofrange
YESa)Fluidsystemisscaled?
YESDescalethefluidsystem
(seepage58)
NOGotopointb)
YESb)Needleplateisblocked?
YESDeblockneedlewith
cleaningneedle(seepage23)
anddescaleagain(seepage58).
Replaceneedleplateifsealing
ringisdefective.
NOGotopointc)
YESc)Filterofwatertank
connectorisblocked?
YESReplacefilter
NOReplacepump(seepage
30)
7Checkforloud
noisesorvibrations
7.1Checkvibrationswhile
puttingaplasticbeakeronthe
dripgrid
YESCoffeemachineorplastic
beakerismovingaround
YESa)Checkifdriptrayand
dripgridareinsertedcorrectly,
setitrightifnecessary
NOGotopointb)
YESb)Checkifrubberfeetare
missing,replaceifnecessary
NOGotopointc)
YESd)Pumpisnotfirminits
support,replaceit(seepage30)
NOGotopoint8)
7.2Checkvibrationsonthe
watertank(wateriswaving)
YESWatertankisvibratingonthe
machine?
YESPumpisnotfirminits
support,replaceit(seepage30)
NOGotopoint8
8Performfinaltests
(seepage49)
9Performfinal
cleaning(seepage
62)
Notroublefoundduringthecheckprocedure?
AskSEB/Krupsaftersalesserviceforfurtherdetails
inordertomakeadecision.
SEB/Krupsaftersalesservicecontact:
Mr.FrançoisdeSevindeBandeville
Phone: +33(0)243083828
EMail:[e-mail]
Endofcheckprocedure.
Check
procedure Symptoms Action/repairwork Furtheraction/ repairwork