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Service Manual EF 472

S P A R E P A R T S

15821

Hose FEP,

4/2,5x90 mm, pump / ther

moblock

42572

Hose connection, Vshaped 55°

37384

Holder clip,

5 mm

43304

Angled those, silicone, flow meter / pump

24971

Hose cover, silicone,

8x1.75x125 mm,

thermoblock / compact brewing unit

29994

House PFA,

4/2.5x170 mm,

Thermoblock / compact brewing unit

16052

Raised head screw, KST/PT 3x12,
Torx10

43257

Closing handle, highgloss chrome plated

43253

Upper cover

47185

Compact brewing unit without closing han
dle (CBU, Birdy)

43288

Drip tray

45538

Heat sink disk

45686

Raised head screw KST/PT 2.2x 5,
Torx6, including spring ring

43771

On/Off switch, 16A, 125250V AC

900

1228

Siliconewire

900

44714

Siliconewire

900

43188

Siliconewire

900

43187

Siliconewire

982

44081

Styropore EF 472

Pos.

EFR

no.

Designation

Summary of Contents for EF 472

Page 1: ...S E R V I C E M A N U A L C O F F E E M A C H I N E Le Cube EF 472 Version 1 0 en...

Page 2: ...14 5 Repairs 16 5 1 Tools and accessories 16 5 2 General disassembly 16 5 3 Replacing the compact brewing unit 22 5 4 Replacing the thermoblock NTC temperature sensor and fine wire fuse s 23 5 5 Repla...

Page 3: ...readiness of the machine and in order to upkeep the full advantages of all the func tions it is absolutely necessary to follow the instructions in this service manual The required utility software to...

Page 4: ...Service Manual EF 472 4 S T R U C T U R E 2 S T R U C T U R E 2 1 Overview of the rating plates This overview shows examples of various brands and is not complete...

Page 5: ...Brand name 2 Voltage and power rating 3 Place of manufacture 4 Conform with RoHS guidelines lead free solder etc 5 Barcode 6 Serial number 7 Machine type 8 Special disposal icon do not dispose with or...

Page 6: ...p button back lighted 8 Large cup button back lighted 9 Coffee outlet 10 Capsule container 11 Light guide to the capsule container 12 Cup tray foldable 13 Drip tray 14 Thermoblock TB 2003 15 Mainboard...

Page 7: ...Service Manual EF 472 7 S T R U C T U R E 2 3 Water circuit 1 Water tank 2 Water tank valve and connector 3 Flow meter 4 Pump 5 Thermoblock 6 Compact Brewing Unit CBU 7 Coffee outlet...

Page 8: ...cup warmer approx 13 Wh with cup warmer approx 20 Wh Default settings version dependent machine function Pump Pump pressure Max permissible 17 5 bar 1 5 bar During coffee preparation depending on the...

Page 9: ...hine is switched on and has heated up 1 Press the Large cup button The pump starts to work 2 Open the closing handle push it back wards to the stop and hold it in this position for approximately 3 sec...

Page 10: ...se the handle and press it down all the way 4 Place a cup under the coffee outlet 5 Press the Small cup or Large cup button Coffee preparation starts and stops automatically Should the cup start to ov...

Page 11: ...10ml 1 Prepare coffee as usual see Making a cup of coffee on page 10 but keep the coffee button pressed for at least three seconds in order to start programming mode 2 Only release the button when the...

Page 12: ...the coffee machine 2 Pull out or remove the water tank 3 Place a beaker under the coffee out let 4 Press and hold the Small cup button 5 Switch the coffee machine on again 6 Release the Small cup butt...

Page 13: ...bols for On Off switch Small cup button Large cup button Illumination off Illumination on Normal blinking Fast blinking Irregular blinking Status Error On Off switch Small cup button Large cup button...

Page 14: ...impossible to close the handle and to press it all the way down YES replace the compact brewing unit 2 3 The capsule is ejected correctly YES continue with point2 4 NO replace compact brewing unit 2 4...

Page 15: ...chine see Descaling on page 37 NO continue with point 5 2 5 2 Temperature is too low below 83 C YES Descale coffee machine see Descaling on page 37 NO continue with point 5 3 5 3 Temperature too high...

Page 16: ...described can be made 5 2 General disassembly General disassembly gives access to the important machine components is required for the following repair instructions Depending on the repair done the m...

Page 17: ...e outlet Should any problems occur then the coffee outlet can be disassembled as follows see previous illustration Press the coffee outlet downwards until on the left side of the gap in the front pane...

Page 18: ...4 on the rear panel Press the locking latch d down ward with the tip of the screwdriver and remove the rear panel 6 Remove both cup covers 17 7 Remove the left 20 and right covers 36 Carefully press t...

Page 19: ...manually 12 Remove the cup tray or heating plate 42 depends on machine type If removing heating plate loosen the screw 3 of the grounding connection first Push the tray or heating plate backwards unti...

Page 20: ...e compact brewing unit has been removed see Replacing the compact brewing unit on page 22 Replacing the flow meter on page 26 For all other repair works the support 13 of the compact brewing unit must...

Page 21: ...heating plate depends on machine type Check if the two heat conductor disks 60 adhere to the heating plate 42 on the correct positions When assembling make sure that the heating plate 42 with the hea...

Page 22: ...replace the coffee tap 24 the O ring 46 on the thermoblock hose connection The spare compact brewing unit 58 is used in the EF 470 and EF 471 coffee machines has therefore a longer axes protruding fr...

Page 23: ...g from the main board Tighten the new NTC temperature sensor 6 and spring ring 7 with a torque wrench 90 110 Ncm Repair tips for the fine wire fuse s When mounting the safety clips 4 make sure that th...

Page 24: ...support Remove the fluid systems support 11 from the floor 32 insert the tip of the screwdriver into the slits in the housing base and press and locking latches to one side Simultaneously lift the sup...

Page 25: ...ew pump the angled hose connection 44 may have to be realigned the white plastic Iid on the pump is rotatable and has two flat surfaces onto which the flat wrench can be placed Mounting tip for the th...

Page 26: ...Service Manual EF 472 26 R E P A I R S 5 6 Replacing the flow meter Repair tip for flow meters Pull the flow meter 41 firmly upwards to remove it...

Page 27: ...sition of the spring 14 A label on the housing of the mainboard 35 contains specifications on the hard ware and software version After assembly check the plug arrangement of the mainboard see Wiring d...

Page 28: ...ce screwdriver tip from below into the switch housing and force the switch out 62 The on off switch 62 has no markings for the connections Check its switch func tions and wiring with a digital multime...

Page 29: ...diagrams Diagrams for 230 V EU first series Diagrams for 230 V EU valid as of 01 01 2007 1 Print for button On off 2 On Off switch 3 Heating plate 4 Thermoblock 230 V 5 Pump 230 V 6 Flow meter 7 Mainb...

Page 30: ...nual EF 472 30 R E P A I R S Diagram for 120 V UL 1 Print for button On off 2 On Off switch 3 Heating plate 4 Thermoblock 120 V 5 Pump 120 V 6 Flow meter 7 Mainboard 120 V 8 Print for buttons Coffee s...

Page 31: ...gram for 100 V Japan first series Wiring diagram for 100 V Japan valid as of 01 01 2007 1 Print for button On off 2 On Off switch 3 Heating plate 4 Thermoblock 100 V 5 Pump 100 V 6 Flow meter 7 Mainbo...

Page 32: ...7 After heating up press the Small cup button 8 Open the valve until water begins to flow 9 Close the valve until the pressure gauge indicates 12 bar Constantly monitor the pressure gauge and if requi...

Page 33: ...hot parts under pressure inside the coffee machine Do not touch any parts under voltage and or hot while checking for leak ages Always wear protective goggles 1 Remove rear and side panels the pump b...

Page 34: ...ne 9 After heating up press the Small cup button 10 Open the valve and let the water flow for approximately 10 sec out of the drain hose 11 Close the valve completely The pres sure stabilizes after in...

Page 35: ...T E S T S 12 Check all connections under pressure for audible and visible leaks Do not run the pump for more than 50 sec with the valve closed 13 Switch off the coffee machine 14 Open the valve and l...

Page 36: ...he heating up period press the Small cup button and preheat the coffee outlet for approximately 10 sec with hot water 4 Insert capsule Cosi is best suited 5 Press the Small cup button 6 Wait until the...

Page 37: ...nd capsule container and empty them 4 Reinsert the drip tray and place a beaker on the cup support Observe the safety instructions on the package of the decalcifier 5 Fill the watert tank with 0 1 l d...

Page 38: ...n through the system again 12 Empty the beaker 13 Remove the filter from the capsule bay 14 Thoroughly rinse the water tank and fill it with fresh water 15 Place the beaker on the cup support 16 Press...

Page 39: ...Empty the capsule container 3 Empty the water tank and the drip tray 4 Clean the water tank and the drip tray 5 Fill the tank with fresh water 6 Reassemble the coffee machine 7 Press the On Off butto...

Page 40: ...Service Manual EF 472 40 S P A R E P A R T S 8 S P A R E P A R T S...

Page 41: ...ver 472 rot print Nespresso 46866 Front cover 472 alu titan print Nespresso 46865 Front cover 472 white print Krups 30 46845 Front cover 472 alu titan print Krups 46849 Front cover 472 weiss print Tur...

Page 42: ...Thermoblock compact brewing unit 55 16052 Raised head screw KST PT 3x12 Torx 10 56 43257 Closing handle high gloss chrome plated 57 43253 Upper cover 58 47185 Compact brewing unit without closing han...

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Krups EF 472, Service Manual

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