Nespresso EF 281 User manual

SERVICE MANUAL

PIXIE COFFEE MACHINES

PIXIE C EF 280

PIXIE D EF 281

Version 1.2 en

Pixie service manual

2

CONTENTS

1 General Safety Notes ........................................................................................5

2 Main Components..............................................................................................6

2.1 Overview............................................................................................................ 6

2.2 Interior view........................................................................................................ 7

2.3 Fluid System ...................................................................................................... 8

2.3.1 Water circuit diagram................................................................................8

2.3.2 Water circuit..............................................................................................9

3 Technical Data ..................................................................................................10

3.1 Rating plates.................................................................................................... 10

3.1.1 Examples of brand specific rating plates ................................................10

3.1.2 Rating plate details (example) ................................................................11

3.2 Technical specifications................................................................................... 12

3.2.1 Dimensions and weight...........................................................................14

4 Operation............................................................................................................15

4.1 General information.......................................................................................... 15

4.2 Status indication............................................................................................... 15

4.3 Machine modes................................................................................................ 16

4.4 Program/reset fill up level................................................................................. 18

4.4.1 Programming the fill up level...................................................................18

4.4.2 Resetting the fill up level and auto shut off.............................................19

4.5 Empty water system......................................................................................... 19

4.6 Program auto shut off time............................................................................... 20

5 Maintenance ......................................................................................................21

5.1 Descaling ......................................................................................................... 21

5.1.1 Descaling procedure...............................................................................21

5.2 Cleaning procedure.......................................................................................... 25

6 Troubleshooting...............................................................................................26

6.1 Check list.......................................................................................................... 26

7 Repairs................................................................................................................28

7.1 Safety instructions............................................................................................ 28

7.2 Repair and mounting tips................................................................................. 28

7.3 Tools and accessories ..................................................................................... 30

7.4 General disassembly........................................................................................ 31

7.4.1 Prepare coffee machine for disassembly................................................31

7.4.2 Remove side panels ...............................................................................32

7.4.3 Remove power cord................................................................................33

7.4.4 Remove water guiding............................................................................35

7.4.5 Remove damper springs.........................................................................36

7.4.6 Remove closing handle...........................................................................37

7.4.7 Remove cable cover...............................................................................37

7.4.8 Remove right light guide.........................................................................38

7.4.9 Remove blind..........................................................................................39

Pixie service manual

3

7.4.10Remove housing right.............................................................................39

7.4.11Remove main assembly .........................................................................44

7.4.12Remove front ring...................................................................................46

7.4.13Remove key caps of push buttons..........................................................47

7.5 Replacing pump............................................................................................... 48

7.6 Replacing functional block............................................................................... 50

7.7 Replacing brewing unit..................................................................................... 52

7.8 Replacing flow meter ....................................................................................... 57

7.9 Wiring diagrams............................................................................................... 59

7.9.1 Wiring diagram 220 V - 240 V IEC..........................................................59

7.9.2 Wiring diagram 120 V UL (USA / Canada).............................................60

7.9.3 Wiring diagram 127 V IEC (Brazil)..........................................................61

7.9.4 Wiring diagram 127 V IEC (Mexico) .......................................................62

7.9.5 Wiring diagram 100 V IEC (Japan).........................................................63

7.9.6 Wiring diagram 110 V IEC (Taiwan).......................................................64

8 Function tests...................................................................................................65

8.1 Safety instructions............................................................................................ 65

8.2 Required equipment......................................................................................... 65

8.2.1 Overview.................................................................................................65

8.2.2 Pressure gauge adapter.........................................................................66

8.2.3 Mounting pressure gauge adapter..........................................................67

8.3 Measure flow rate ............................................................................................ 68

8.4 Pressure and leakage checks.......................................................................... 69

8.4.1 Preparations ...........................................................................................70

8.4.2 Test run...................................................................................................71

8.5 Measure coffee temperature............................................................................ 72

8.6 Protective earth (PE) continuity test................................................................. 74

8.6.1 What is the protective earth continuity test about?.................................74

8.6.2 General...................................................................................................74

8.6.3 Test sequence........................................................................................75

8.6.4 What to do if the protective earth continuity test fails .............................76

8.7 Protective insulation test.................................................................................. 76

8.7.1 What is the protective insulation test about?..........................................76

8.7.2 General...................................................................................................76

8.7.3 Test sequence........................................................................................77

8.7.4 What to do if the insulation test fails.......................................................78

9 Explosion Drawings........................................................................................79

9.1 EF 280 Explosion drawing............................................................................... 79

9.2 EF 281 Explosion drawing............................................................................... 80

10 Parts List............................................................................................................81

10.1 Nespresso EF 280 / C60 and EF 281 / D60 .................................................... 81

10.2 208 Turmix TX160 CH..................................................................................... 83

10.3 281 DeLonghi EN125 EU................................................................................. 84

10.4 280 Krups XN300510 EU................................................................................. 85

10.5 281 Magimix M110 EU/GB .............................................................................. 86

10.6 281 Koenig D60 CH......................................................................................... 87

11 Notes...................................................................................................................88

Pixie service manual

4

PREFACE

The purpose of this service manual is to provide the service personnel with all necessary

information with regards to correct handling, maintenance and repair of the Pixie coffee

machines EF 280 and EF 281.

This manual should be used by the technicians as a valuable aid to guarantee the

permanent readiness for use of the machines. In order to take full advantage of all the

functions, it is absolutely necessary to follow the instructions in this manual.

Visit the Nespresso technical website periodically to check for upgrades, technical

modifications, counter measures etc. for these coffee machines:

https://business.nespresso.com

CONTENT UPDATES

Version 1.2

• Improved general disassembly procedures for cable cover and front ring.

Version 1.1

• Function test corrections in connection with translations of this service manual.

Version 1.0

• First released service manual version, in English only.

Please keep this

manual together with

the corresponding

service documentation.

This way you are assured

to have the necessary

information.

Access is restricted

and can be obtained

by asking your

Nespresso technical

contact person..

The version number

of this service manual

is printed on the lower

right corner of the front

page.

Pixie service manual

5

GENERAL SAFETY NOTES

1 GENERAL SAFETY NOTES

As an additional safety measure, the use of a residual current device (RCD), also called

a ground fault circuit interrupter (GFCI), in the repair centre is highly recommended.

Risk of fatal electrical shock and fire!

Mains voltage inside the coffee machine.

• Unplug appliance before cleaning.

• Never clean wet or immerse plug, cord or appliance in any fluid.

• Disconnect the mains plug before disassembly - the appliance must

be free of voltage.

This device does

not protect against

electrical shock due to

contact with both circuit

conductors.

Example illustrations

of typical devices.

Use a GFCI with a trip

level of 4 - 6 mA (USA)

resp. a RCD with a trip

level of 15 - 30 mA (Europe).

A trip level above 30 mA

provides only very limited

protection against harm

from an electric shock.

1) RCD protected socket-outlet

2) Plug-in RCD unit

3) GFCI socket

4) Plug-in GFCI

Danger of burns!

Hot parts and water under pressure inside the coffee machine

(particularly in the thermoblock).

• Let coffee machine cool down before cleaning or disassembly.

1

2

RESET

TEST

RESET

TEST

3

4

Pixie service manual

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MAIN COMPONENTS

2 MAIN COMPONENTS

2.1 Overview

1) Drip grid

2) Capsule container for used capsules

(backlighted)

3) Feed opening for capsule

4) Closing handle

5) Coffee button "small cup" / "Espresso"

(backlighted)

6) Coffee button "large cup" / "Lungo"

(backlighted)

7) On/Off switch

8) Housing right

9) Water level detection

10) Water tank lid

11) Water tank

12) Power cord

13) Water tank connector

14) Side panel left/right

15) Housing left

16) Coffee outlet

17) Waste water container

18) Folding cup support

19) Maintenance unit

15

1

2

17

4

3

16

5

7

10

11

12

6

18

14

13

8

9

19

Pixie service manual

7

MAIN COMPONENTS

2.2 Interior view

This interior view

shows the wired cof-

fee machine model

Pixie C.

1) Steam cover

2) Pyramid plate

3) Brewing device

4) Thermoblock

5) Sound damper

6) Electronic control board

7) Water tank valve

8) Flow meter

9) Light guide (for capsule container)

10) Opening in the housing to store excess

lenght of power cord

11) Pump

12) Thermal cut off fuse

13) Magnetic mounting

2

3

4

7

8

9

11

12

6

10

13

1

5

Pixie service manual

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MAIN COMPONENTS

2.3 Fluid System

2.3.1 Water circuit diagram

Legend:

1) Water tank

2) Flow meter

3) Pump

4) Sound damper

5) Thermoblock

6) Check valve

7) Brewing unit

8) Capsule container

9) Waste water container

10) Drip grid

Fresh cold water

Fresh hot water

Coffee

Waste/drip water

BU

TB

1

3

2

5

7

8

9

10

4

6

Pixie service manual

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MAIN COMPONENTS

2.3.2 Water circuit

1) Pump

2) Coffee outlet

3) Brewing unit

4) Check valve

5) Thermoblock

6) Water tank

7) Sound damper

8) Flow meter

9) Water tank connector

3

5

4

2

1

6

7

8

9

Pixie service manual

10

TECHNICAL DATA

3 TECHNICAL DATA

3.1 Rating plates

3.1.1 Examples of brand specific rating plates

The rating plate can

be found at the bot-

tom of the coffee

machine.

This overview shows

examples of various

brands and is subject

to alterations.

Pixie service manual

11

TECHNICAL DATA

3.1.2 Rating plate details (example)

Decoding the alphanumeric serial number

Example:

1) Brand name

2) Voltage and power rating

3) Place of manufacture

4) National approval sign of Russia

(GOST R)

5) National approval sign of Germany

(VDE)

6) Barcode

7) Serial number

8) Machine type

9) Special disposal icon

(do not dispose with ordinary waste)

10) Sign of conformity (CE)

11) Conformity with RoHS guidelines (lead

free solder, etc.)

12) Article number of the rating plate

1

2

3

6

7

8

9

10

12

4

5

11

By decoding the date

of production and

machine type, the

coffee machine can be

identified exactly.

Checksum

Color version

Type of mains plug

Mains voltage

Distributing partner

Incremental number per production day

Manufacturing plant

Manufacturer designation of the machine type (EF 280)

10232 ... Date of production

(10 = year 2010, 232 = 232

nd

day of the year)

102 322 801 0001 782 1Cs

Pixie service manual

12

TECHNICAL DATA

3.2 Technical specifications

Mains voltage ranges

- Europe, RU, AU, CN, KR, SG, HK, ME, ZA, IL, BR, AR............ 220-240 V, 50/60 Hz

- USA, Canada..................................................................................... 120 V, 50/60 Hz

- BR, MX............................................................................................... 127 V, 50/60 Hz

- Japan ................................................................................................ 100 V, 50/60 Hz

- Taiwan.................................................................................................... 110 V, 60 Hz

Power consumption

220-240 V mains voltage......................................................................approx. 1’260 W

100/110/120/127 V mains voltage.........................................................1’160 - 1’370 W

Power consumption of coffee machine main components

(for all voltages and frequencies)

Thermoblock......................................................................................................1’200 W

Pump......................................................................................................................60 W

Energy consumption (CECED / FEA 2009 method)

Energy efficiency class level ............................................................................. A - 40%

Daily energy consumption....................................................................................72 Wh

Annual energy consumption..........................................................................26.28 kWh

Pump

Pump pressure

- Max. permissible....................................................................................20 bar ± 3 bar

- During coffee preparation (depending on the type of coffee)........................9 - 16 bar

Capacities

Water tank.................................................................................................. approx. 0.7 l

Waste water container......................................................................................... 190 ml

Capsule container ..........................................................................approx. 10 capsules

EuP ... Energy using

Products

See commission regula-

tion no. 1275/2008 of the

European Union.

Approvals CE, UL "for USA and Canada", PSE, Gost R, Ctick,

CCC, KTL, SPRING, SASO, SABS, ISI, IRAM, NOM

EuP standard The coffee machine is EuP 2013 compliant

Advised water tank

capacity to avoid

spilling.

Pixie service manual

13

TECHNICAL DATA

Volume of prepared coffee

- factory settings

Small cup "Espresso"..................................................................................40 ml (±7%)

Large cup "Lungo"..................................................................................... 110 ml (±7%)

- customer settings

Programmable setting range.........................................................................20 - 200 ml

Environmental conditions

Operating temperature............................ + 5 °C up to + 45 °C (+ 41 °F up to + 113 °F)

Storage temperature.................................. - 25 °C up to + 65 °C (- 13 °F up to 149 °F)

Altitude............................................................................up to 2’500 m above sea level

Humidity................................................................................................... no restrictions

Various data

Preheating time.......................................................................................approx. 25 sec

Automatic shut off time.................................................................after 9 min of non-use

Safety temperature (electronically controlled)....................................... 120 °C (248 °F)

Safety temperature (thermal cut-off)..................................................... 167 °C (333 °F)

Coffee temperature at outlet ...........................................86 °C ± 3 °C (187 °F ± 5,4 °F)

Pixie service manual

14

TECHNICAL DATA

3.2.1 Dimensions and weight

Dimensions ( length x width x height)............................................ 326 x 111 x 235 mm

Power cable length...............................min. 0.8 m (depending on national regulations)

Cup support, folded down ....................... 90 mm, for espresso and lungo cups/glasses

Cup support, tilted up....................................................146 mm, for macchiato glasses

Weight (without water)............................................................................. approx. 2.8 kg

Dimensions in [mm].

235

326

111

90

146

Pixie service manual

15

OPERATION

4 OPERATION

4.1 General information

For an overview of operational controls see “Main Components” on page 6.

For basic operation of the machine such as preparing a coffee and other related infor-

mation, refer to the user manual.

4.2 Status indication

According to the following table the status of the coffee machine is shown by

- the two coffee buttons with white backlight

- the capsule container with white or red backlight.

Machine

status etc.

"Small cup"

button

"Large cup"

button

Capsule container

backlight

Water tank level

high / low / missing

LED signal

Off All LED‘s off

Error

Blinking fast (2 Hz,

0.25 s on/0.25 s off)

3 times every 2 sec-

onds, alternating

Heat up

Blinking 1 Hz,

0.5 s on, 0.5 s off

Preselect

small cup

Blinking 1 Hz,

0.5 s on, 0.5 s off

Preselect big

cup

Blinking 1 Hz,

0.5 s on, 0.5 s off

Ready LED‘s on

Brewing small

cup

Blinking 1 Hz,

0.5 s on, 0.5 s off

Brewing big

cup

Blinking 1 Hz,

0.5 s on, 0.5 s off

Rinse small

cup

Blinking 1 Hz,

0.5 s on, 0.5 s off

(same as brewing

small cup)

Pixie service manual

16

OPERATION

4.3 Machine modes

This table helps to understand the operating modes of the Pixie coffee machines:

Rinse big cup

Blinking 1 Hz,

0.5 s on, 0.5 s off

(same as brewing big

cup)

Volume brew-

ing small cup

Blinking 1 Hz,

0.5 s on, 0.5 s off

(same as brewing

small cup)

Volume brew-

ing big cup

Blinking 1 Hz,

0.5 s on, 0.5 s off

(same as brewing big

cup)

Descaling

ready

Blinking 2 Hz,

0.25 s on, 0.25 s off

Descaling

process -

pump on

Blinking 2 Hz,

0.25 s on, 0.25 s off

(same as descaling

ready mode)

Descaling

process -

pump off

Blinking 2 Hz,

0.25 s on, 0.25 s off

(same as descaling

ready mode)

Emptying /

evaporating

Blinking 2 Hz,

0.25 s on, 0.25 s off

Resetting

Blinking 1 Hz,

0.5 s on, 0.5 s off

(same as heat up)

Overheat

Blinking 1 Hz,

0.5 s on, 0.5 s off

(same as heat up)

Machine mode Enter mode Actions Exit mode

1 Heat up mode

Every time after switch-

ing on machine

Heats up thermoblock

to ready temperature

90 °C within 30 sec

without overshooting

target temperature

e.g. switching off

machine

2 Self test mode

Every time after switch-

ing on machine

Tests:

• NTC short circuit

• NTC connected

• Checks if thermo-

block reaches ready

temperature within

2 min after switch on

e.g. switching off

machine

Machine

status etc.

"Small cup"

button

"Large cup"

button

Capsule container

backlight

Water tank level

high / low / missing

LED signal

Pixie service manual

17

OPERATION

3 Ready mode

• After heat up and self

test mode was ok

• After brewing or

volume brewing

coffee

• After reset mode

• After leaving

descaling mode

Keeps thermoblock

temperature at 90 °C

e.g. switching off

machine

4a Brewing mode

4b Volume brewing

mode (program-

ming cup size)

• Press and release

coffee button "large

cup" or "small cup"

(brewing mode)

• Press and hold

coffee button "large

cup" or "small cup"

for more than 3 s

(programming mode)

• Press and release

coffee button "large

cup" or "small cup"

when machine was

in brewing mode or

automatic exit given

by the flow meter

• Release coffee

button "large cup" or

"small cup" when

machine is in

programming mode

• Switch off machine

5 Descaling mode

• Switch on machine,

wait until ready

• Press and hold both

coffee buttons for at

least 3 sec

• Regulates tempera-

ture to 55 °C (after

pump was started)

• Stops and starts

pump with any coffee

button, no volume

brewing in descaling

mode

• Press and hold both

coffee buttons for

1 sec

Note: When machine is

switched off during any

descaling mode, then it

goes to descaling

mode ready state after

next switch on.

6 Emptying mode

(evaporing)

1) Switch off machine

2) Press and hold

coffee button

"small cup"

3) Switch on machine

1) Starts pump

2) Stops pump after

10 sec

3) Heats up thermo-

block to 105 °C

(100% power)

4) Switches off ther-

moblock

5) Switches off

machine

6) Blocks machine for

10 min

Switch off machine

7 Resetting mode

1) Switch off machine

2) Press and hold

coffee button

"large cup"

3) Switch on machine

• Resets programmed

large and small

coffee volumes to

factory setting

• Indicates the reset-

ting mode for 3 sec

Proceeds with self test

mode automatically

8 Auto switch off mode

(factory setting of 9 min

can be changed to

30 min - see page 20)

Automatically after a

certain period of non-

use

• Switch off machine

after 9 min resp.

30 min if no coffee is

brewed or 9 min

resp. 30 min after

last brewed coffee

9 Failure mode

Automatically by fol-

lowing failures:

a) NTC short circuit

b) NTC not connected

c) Heat up too slow

Machine indicates fail-

ure with blinking coffee

buttons as long as the

failure is present

When failure is fixed

Machine mode Enter mode Actions Exit mode

Pixie service manual

18

OPERATION

4.4 Program/reset fill up level

Each coffee button can be programmed with a coffee volume for an individual cup size.

The procedure for programming/resetting is the same for both coffee buttons.

4.4.1 Programming the fill up level

Programmable volume range........................................................................20 - 200 ml

Each new program-

ming cycle starts with

the min. volume

(20 ml after 3 sec), regard-

less of a preprogrammed

coffee volume.

1) Prepare coffee as usual (see user

manual), but keep the coffee button

pressed for at least 3 seconds in

order to start programming mode.

2) Only release the button when the

desired fill level is reached.

min

3 sec

max 200 ml

20 ml

200 ml

max 200 ml

min

3 sec

Pixie service manual

19

OPERATION

4.4.2 Resetting the fill up level and auto shut off

With the following procedure all programmed fill up levels will be set back to this factory

settings:

Coffee button "small cup" / "Espresso".................................................................. 40 ml

Coffee button "large cup" / "Lungo"...................................................................... 110 ml

Additionally the auto shut off time will be set back to 9 min (factory setting).

4.5 Empty water system

After every operation, some water (max. 25 ml) remains in the coffee machine. There-

fore the water system must be emptied

- if the coffee machine will not be used for a long time

- as antifreeze measure

- for repairs and shipment.

1) Switch off the coffee machine. 2) Press and hold the button "large cup".

3) Switch on the coffee machine.

4) Release button "large cup".

1

OFF

2

3

4

ON

After this procedure,

the coffee machine

will not be ready for

approx. 10 min (until the

thermoblock cools to below

100 °C ).

1) Switch off coffee machine. 2) Remove water tank.

3) Place a receptacle under the coffee

outlet.

1

OFF

2

3

Pixie service manual

20

OPERATION

4.6 Program auto shut off time

The auto shut off time of 9 min can be changed to 30 min with the following procedure:

To set the auto shut off time back to the factory default of 9 min, see page 19.

4) Press and hold button "small cup".

5) Switch coffee machine on again.

6) Release button "small cup".

- The coffee buttons blink fast simulta-

neously.

- The pump starts to drain the water

system and stops automatically.

- After heating up the therrmoblock, the

machine switches itself off automati-

cally and blocks the On/Off switch for

approx. 10 min.

1) Switch off coffee machine. 2) Press and hold both coffee buttons.

3) Switch coffee machine on again.

4) Release both coffee buttons.

4

5

6

ON

Automatic

switch off

1

OFF

2

3

4

ON

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