Nespresso C50 Service Manual
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Nespresso C50 Service Manual

U-coffee machine u(c and d)
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S E R V I C E M A N U A L
U - C O F F E E M A C H I N E S
U (C and D)
C50 / D50
Version 1.2 en

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Summary of Contents for Nespresso C50

  • Page 1 S E R V I C E M A N U A L U - C O F F E E M A C H I N E S U (C and D) C50 / D50 Version 1.2 en...

  • Page 2: Table Of Contents

    C O N T E N T S 1 General safety notes ..................5 2 Main components ....................6 Overview ......................6 Interior view......................7 Fluid system ....................... 8 3 Technical data .....................9 Rating plates ...................... 9 3.1.1 Examples of brand specific rating plates ..........9 3.1.2 Rating plate details (example) ..............10 Technical specifications..................
  • Page 3 8.6.4 What to do if the insulation test fails ............54 9 Explosion drawings ..................55 C50 Explosion drawing ..................55 D50 Explosion drawing ..................56 10 Parts list ......................57 10.1 Nespresso C50 and D50 ................. 57 Version 1.2 en U service manual...
  • Page 4 Spare parts lists and exploded drawings are subject to change. To optain the last version, please contact your official spare parts supplier. Access is restricted Visit the Nespresso technical website periodically to check for upgrades, technical and can be obtained modifications, counter measures etc. for these coffee machines: by asking your https://business.nespresso.com...

  • Page 5: General Safety Notes

    G E N E R A L S A F E T Y N O T E S The repair of these machines can only be performed by Nespresso approved after-sales centers and technicians, using suitagble tools and original spare parts and taking into account the national safety regulations.

  • Page 6: Main Components

    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 1 (Lungo, 110 ml) 1 (Espresso, 40 ml) 1 (Ristretto, 25 ml) 1) Capacitive touch area 5) Coffee outlet 2) Slider for capsule insertion slot...

  • Page 7: Interior View

    M A I N C O M P O N E N T S Interior view 1) Low pressure connector for water tank 6) BU housing 2) Flowmeter 7) High pressure connector 3) Steam cover 8) Motor 4) Drop stop 9) Pump 5) Thermoblock Version 1.2 en...

  • Page 8: Fluid System

    M A I N C O M P O N E N T S Fluid system 1) Water tank 7) Coffee outlet 2) Flowmeter 8) Drop stop 3) Pump 9) Capsule container 4) High pressure connector 10) Drip tray 5) Thermoblock 11) Cup support 6) Capsule cage U service manual...

  • Page 9: Technical Data

    T E C H N I C A L D A T A T E C H N I C A L D A T A Rating plates The rating plate can 3.1.1 Examples of brand specific rating plates be found at the bot- tom of the coffee machine.

  • Page 10: Rating Plate Details (Example)

    T E C H N I C A L D A T A 3.1.2 Rating plate details (example) 12115 C50 j 0440 782 07 X 1) Brand name 7) Serial number 2) Voltage and power rating 8) Machine type 3) Place of manufacture...

  • Page 11: Technical Specifications

    T E C H N I C A L D A T A 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 ....................
  • Page 12 T E C H N I C A L D A T A Volume of prepared coffee - factory settings Small cup "Ristretto ..................25 ml (±7%) Small cup "Espresso" .................. 40 ml (±7%) Large cup "Lungo"..................110 ml (±7%) - customer settings Programmable setting range ................

  • Page 13: Dimensions And Weight & Size

    T E C H N I C A L D A T A 3.2.1 Dimensions and weight & size Dimensions in [mm]. Dimensions (length x width x height) ..........366 x 115 x 251 mm Distance drip grid - coffee outlet: ..........88 mm (Espresso mode) Distance bottom coffee outlet: ..........

  • Page 14: Operation

    O P E R A T I O N O P E R A T I O N 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.
  • Page 15 O P E R A T I O N Machine State events LED’s Lungo Espresso Ristretto status Brew Steady on Espresso Steady Espresso Brew Steady on Lungo Steady Lungo 4 sec. Steady on cup size that Steady or off Steady or off Steady or off after brew has been brewed Rinse...
  • Page 16 O P E R A T I O N Machine State events LED’s Lungo Espresso Ristretto status Program- Ristretto & Espresso On ming On 0.5sec On 0.5sec 0.5sec (confirmation) Lungo Program- Ristretto & Lungo On ming On 0.5sec On 0.5sec 0.5sec (confirmation) Espresso Program-...

  • Page 17: Machine Modes

    O P E R A T I O N Machine modes This table helps to understand the operating modes of the U coffee machines: Machine mode Enter mode Actions Exit mode Heats up thermoblock to ready temperature Every time after switch- e.g.
  • Page 18 O P E R A T I O N Machine mode Enter mode Actions Exit mode 1) Switch on machine 1) Starts pump 2) Remove the water 2) Stops pump after tank 10 sec 3) Open the slider 3) Heats up thermo- 4) Press and hold the block to 105 °C Ristretto and...

  • Page 19: Empty Water System

    O P E R A T I O N Empty water system After this procedure, After every operation, some water (max. 25 ml) remains in the coffee machine. There- the coffee machine fore the water system must be emptied will not be ready for if the coffee machine will not be used for a long time approx.

  • Page 20: Maintenance

    M A I N T E N A N C E M A I N T E N A N C E Descaling Only use Nespresso descaler (5034) or Nespresso descaling kit – (3035/CBU-2) never use vinegar! Descaler can damage casing and surfaces.
  • Page 21 M A I N T E N A N C E 8) If slider is closed, push any control to 9) Refill the water tank with the used des- start descaling. If slider is open, close caling solution collected in the con- it to start descaling.

  • Page 22: Cleaning Procedure

    M A I N T E N A N C E 5.2 Cleaning procedure Risk of fatal electrical shock and fire! Never clean wet or immerse plug, cord or appliance in any fluid. Unplug appliance and let it cool down to avoid burns. Never use brushes and/or cleaning agents that contain...

  • Page 23: Troubleshooting

    T R O U B L E S H O O T I N G T R O U B L E S H O O T I N G Check list After an initial inspec- Measure / Further measures / Check Error symptoms tion in accordance...
  • Page 24 NO - continue descaling product only. No errors found according to YES - for more information 10 Final cleaning check list? please contact Nespresso (see page 22) Service Division End of check list U service manual Version 1.2 en...

  • Page 25: Repairs

    R E P A I R S These repair instructions are based on exploded drawings with position numbers combined with repair and mounting tips, presuppose basic knowledge in repairing Nespresso coffee machines. Safety instructions Risk of fatal electrical shock! Mains voltage inside the coffee machine.

  • Page 26: Tools And Accessories

    R E P A I R S Wiring arrangement Random changes in the wiring arrangement of the wired model version during a repair can cause electromagnetic interferences, squeezed wires, insulation defects due to contact with hot parts, insulation problems if low and high voltage wires are not separated, damage to the functional block.

  • Page 27: General Disassembly

    R E P A I R S General disassembly This subchapter shows how to replace the power cord, all necessary disassembly steps to gain access to the main assembly (brewing unit, thermoblock, hydraulic unit and functional block. 7.4.1 Prepare coffee machine for disassembly •...

  • Page 28: Remove Cover

    R E P A I R S 7.4.2 Remove cover Use a wrap foil to pro- tect the cover during service. • Loosen 2 screws on the machine floor (1). Take care not to • Remove the cover by hand. scratch the surface and keep the cover at a safe place.

  • Page 29: Remove Front Cover And Drop Stop

    R E P A I R S 7.4.3 Remove front cover and drop stop • Dismantle the front cover clips by hand (1). • Remove front cover (2). To dismantle the drop • Dismantle the drop stop clips by hand. stop, the brewing unit •...

  • Page 30: Remove Slider Chassis And Slider Unit

    R E P A I R S 7.4.4 Remove slider chassis and slider unit • Plug out the touch pad cable (1) • Dismantle the slider-chassis clips with a screwdriver (2). • Remove the slider chassis • Pull down the blind (slider) during the dismantling of the clips. U service manual Version 1.2 en...
  • Page 31 R E P A I R S • Remove slider unit (1): press forward and upward. • Remove touch pad cable (2). • Remove touch pad (2). • Dismantle slider for removing spring packet (3). • Remove the rachets (4). Assembly checkpoint Position the slider and spring packet bevor assembly slider-unit.

  • Page 32: Remove Pivot Bottom, Cable Bracket, Power Cable

    R E P A I R S 7.4.5 Remove pivot bottom, cable bracket, power cable • Dismantle the clips with a screwdriver (1) • Remove the pivot buttom and low pressure connector WT (2). The strain cable bracket is under ten- sion.

  • Page 33: Remove Electronic Device

    R E P A I R S 7.4.6 Remove electronic device • Dismantle the electronic device clip with a screwdriver. • Unplug cables and remove electronic device. • Remove pump isolation. • Plug out low pressure connector pump, pump cables, Motor cables, NTC / Triac signal cables - XHP 3 connector, triac power cable and STB cable.

  • Page 34: Remove Flowmeter (Fm) Pcb

    R E P A I R S 7.4.7 Remove flowmeter (FM) PCB • Dismantle the electronic device clips with a screwdriver. • Dismantle the flowmeter clips by hand and remove flowmeter Latch will break if not handled carefully! Assembly checkpoint Never re-use a dismantled flowmeter.

  • Page 35: Remove High Pressure Connector

    R E P A I R S 7.4.8 Remove high pressure connector • Remove the high pressure connector by cutting the connector clips. 7.4.9 Remove pump • Remove pump support • Remove pump. Version 1.2 en U service manual...

  • Page 36: 10Remove Brewing Unit Device And Steam Cover

    R E P A I R S 7.4.10 Remove brewing unit device and steam cover • Dismantle the brewing unit device clips with a screwdriver. Push the ther- moblock to the back- side and upward at the same time. • Remove brewing unit.

  • Page 37: Remove Bu Housing And Gear Wheels

    R E P A I R S 7.4.11 Remove BU housing and gear wheels Use e.g. a cordless • Turn worm gear till the stop limit. drill driver. • Lift up the cover once the guides are at the rear, vertically positioned. Version 1.2 en U service manual...
  • Page 38 R E P A I R S • Remove BU housing, bush bearing, gear lever right, gear lever left. Assembly checkpoint Right side left side not ok left side ok left side not ok • Note the correct mounting position for gear lever left (41) and gear lever right (47). U service manual Version 1.2 en...

  • Page 39: 12Remove Thermoblock And Capsule Cage

    R E P A I R S 7.4.12 Remove thermoblock and capsule cage • Loosen 2 screws to remove thermoblock and capsule cage. • Remove TB sleeve and o-ring seal tb tube. Version 1.2 en U service manual...

  • Page 40: Wiring Diagrams

    R E P A I R S Wiring diagrams Depending on 7.5.1 Wiring diagram 220 V - 240 V IEC national regulations, one or two fine wire fuses are mounted on the thermoblock. U service manual Version 1.2 en...

  • Page 41: Wiring Diagram 120 V Ul (Usa / Canada)

    R E P A I R S 7.5.2 Wiring diagram 120 V UL (USA / Canada) Version 1.2 en U service manual...

  • Page 42: Wiring Diagram 127 V Iec (Brazil)

    R E P A I R S 7.5.3 Wiring diagram 127 V IEC (Brazil) U service manual Version 1.2 en...

  • Page 43: Wiring Diagram 127 V Iec (Mexico)

    R E P A I R S 7.5.4 Wiring diagram 127 V IEC (Mexico) Version 1.2 en U service manual...

  • Page 44: Wiring Diagram 100 V Iec (Japan)

    R E P A I R S 7.5.5 Wiring diagram 100 V IEC (Japan) U service manual Version 1.2 en...

  • Page 45: Wiring Diagram 110 V Iec (Taiwan)

    R E P A I R S 7.5.6 Wiring diagram 110 V IEC (Taiwan) Version 1.2 en U service manual...

  • Page 46: Function Tests

    F U N C T I O N T E S T S F U N C T I O N T E S T S Safety instructions Some function tests are performed with an energized, partly opened coffee machine. Danger of electrocution! Mains voltage inside the coffee machine.

  • Page 47: Measure Coffee Temperature

    F U N C T I O N T E S T S Measure coffee temperature 10 sec 1) Start coffee machine. 3) Preheat coffee outlet with hot water: 2) Place a measuring cup on cup sup- 1. Press Lungo button or close the port.

  • Page 48: Tightness And Leakage Checks

    F U N C T I O N T E S T S 8.4 Tightness and leakage checks This test must be performed: - each time a part of the water circuit has been removed or replaced - to confirm the tightness of the water circuit under pressure. Dangerous mains voltage inside the coffee machine! Do not touch any parts under voltage while checking for leakages! Dangerous hot parts under pressure inside the coffee machine!

  • Page 49: Test Run

    F U N C T I O N T E S T S 8.4.2 Test run Do not run the 30 sec. max pump for more than 30 sec. If machine stops dur- ing test, simply touch Lungo button again. 6) Touch the Lungo button.

  • Page 50: Protective Earth (Pe) Continuity Test

    0.3 Ohms (with a test current of 200 mA DC). Test equipment Ask Nespresso for Special test equipment is needed that complies with the regulations to perform protec- recommendations tive earth continuity measurements. Detailed requirements and tolerances must be veri- about test equipment.

  • Page 51: Test Sequence

    F U N C T I O N T E S T S 8.5.3 Test sequence This test sequence is Danger of electrocution! only an example and Do not plug in the coffee machine during the protective earth continuity has to be adabted to test.

  • Page 52: What To Do If The Protective Earth Continuity Test Fails

    For the insulation test, phase and neutral wire are shunted at the power plug. Then a test voltage is applied between phase/neutral and selected parts of the coffee machine. Test equipment Ask Nespresso for Special test equipment is needed that complies with the regulations to perform insulation recommendations and withstanding voltage tests.

  • Page 53: Test Sequence

    F U N C T I O N T E S T S date of repair/test(s) performed test(s)/measuring value(s), test points used test equipment signature 8.6.3 Test sequence Danger of electrical shock/short circuit! Do not plug in the coffee machine during insulation test. Danger of electrical shock! Do not touch tip of test probes.

  • Page 54: What To Do If The Insulation Test Fails

    F U N C T I O N T E S T S 7) Touch slider with red test probe. 8) Press "measure" button. 9) Read off displayed insulation resist- ance or test result. 10) Insert tip of red test probe up into cap- By looking into the sule ejection slot and touch thermo- capsule ejection slot...

  • Page 55: Explosion Drawings

    E X P L O S I O N D R A W I N G S E X P L O S I O N D R A W I N G S C50 Explosion drawing Version 1.2 en...

  • Page 56: D50 Explosion Drawing

    E X P L O S I O N D R A W I N G S D50 Explosion drawing U service manual Version 1.2 en...

  • Page 57: Parts List

    P A R T S L I S T 1 0 P A R T S L I S T 10.1 Nespresso C50 and D50 Explo. Pos. Drawning, Part Type Component 29127-1 Cover black 29127-2 Cover cream 29127-3 Cover taupe...
  • Page 58 P A R T S L I S T Explo. Pos. Drawning, Part Type Component 29118 Electronic device 93252 Water tank 93253 Water tank lid 29911 Connector clip 18147 High pressure connector 29907 O-Ring 3.4 x 1.9 29241 Pump isolation 18287-1 Pump EN4 220-240V 18287-2...
  • Page 59 P A R T S L I S T Explo. Pos. Drawning, Part Type Component 29513 Connection Cable JP compl. ass. 29512-1 Connection Cable BR w label 127V 29512-2 Connection Cable BR w label 220V 29511 Connection Cable TW compl. Ass 29402 Pump support 29521...
  • Page 60 P A R T S L I S T U service manual Version 1.2 en...

This manual is also suitable for:

D50

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