ServiceManualEF472
2
C O N T E N T S
1 Preface ..................................................................................................................3
2 Structure...............................................................................................................4
2.1 Overviewoftheratingplates.............................................................................. 4
2.2 Overview ............................................................................................................ 6
2.3 Watercircuit ....................................................................................................... 7
2.4 Technicaldata.................................................................................................... 8
3 Operations...........................................................................................................9
3.1 Fillingthewatersystem...................................................................................... 9
3.2 Makingacupofcoffee ..................................................................................... 10
3.3 Programmingthefilllevel................................................................................. 11
3.4 Resettingthefillleveltothefactorydefault...................................................... 11
3.5 Emptyingthewatersystem .............................................................................. 12
3.6 Lightsignals ..................................................................................................... 13
4 Troubleshooting ...............................................................................................14
4.1 Checklist.......................................................................................................... 14
5 Repairs................................................................................................................16
5.1 Toolsandaccessories ..................................................................................... 16
5.2 Generaldisassembly........................................................................................ 16
5.3 Replacingthecompactbrewingunit ................................................................ 22
5.4 Replacingthethermoblock,NTCtemperaturesensorandfinewirefuse(s) ... 23
5.5 Replacingthepumpwiththefinewirefuse...................................................... 24
5.6 Replacingtheflowmeter.................................................................................. 26
5.7 Replacingthemainboardwiththebuttonprints ............................................... 27
5.8 Replacingtheon/offswitchand/orthemainscable......................................... 28
5.9 Wiringdiagrams ............................................................................................... 29
6 Functiontests ...................................................................................................32
6.1 Measureflowrate............................................................................................. 32
6.2 Pressureandleakagechecks .......................................................................... 33
6.3 Measuringthecoffeetemperature ................................................................... 36
7 Maintenance ......................................................................................................37
7.1 Descaling ......................................................................................................... 37
7.2 Dailymaintenance,cleaning ............................................................................ 39
8 Spareparts.........................................................................................................40
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