U_service manual_en.fm
Contents
1. AG 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 REPAIRS e Remove slider unit 1 press forward and upward Remove touch pad cable 2 Remove touch pad 2 e Dismantle slider for removing spring packet 3 e Remove the rachets 4 Assembly checkpoint Position the slider and spring packet bevor assembly slider unit Position the ratchets and touch pad cable befor assembly slider chassis Version 1 2 en U service manual 31 The strain cable x bracket is under ten sion Therefore hold down the strain relief clamp with your finger when unlatching it 32 REPAIRS 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 Remove the cable bracket 1 with a screwdriver and the connection cable 2 Assembly checkpoint Never re use damaged cables U service manual Version 1 2 en El 33 REPAIRS 7 4 6 Remove electronic device HK S fa CDSS AS NN FIND A 3 JAN N INNE BARES S II NU N N FR IN IION zz FN Ni Mi a V ZN UMI NO2. 40 7 5 2 Wiring diagram 120 V UL USA Canada 41 7 5 3 Wiring diagram 127 V IEC Brazil 42 7 5 4 Wiring diagram 127 V IEC Mexico 43 7 5 5 Wiring diagram 100 V IEC Japan 44 7 5 6 Wiring diagram 110 V IEC Taiwan 45 8 Function tesis 46 St NNN ee 46 9 2 hedguired EQUIPMENT zi uuu sius undi y aua ua iu DK oke d ap e dU ka Ca A EY RC cu D KS RCM qasa 46 EO EE EE EE 46 8 3 Measure coffee temperature sssscesessccssesscesnssssnnascnenastns 47 8 4 Tightness and leakage checkS eaaa eaaa a nana anana nana eaaa anana aee 46 8 4 1 Preparations a ara rrrsssssasssa 46 94 22 ENG 49 8 5 Protective earth PE continuity test 50 8 5 1 What is the protective earth continuity test abOUt 50 52 NECI EEE EE 50 95 3 Nene 51 8 5 4 What to do if the protective earth continuity test fails 52 8 6 Protective insulation test a 52 8 6 1 What is the protective insulation test about
3. min 0 8 m depending on national regulations Weight without water sssscsssssscsssssesssssessssssssnssses approx 3 kg Version 1 2 en U service manual 13 14 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 3 capacitive sensors on MMI PCB OCIO State events LED s Lungo status All 3 LED s blink together blinking 2Hz blinking 2Hz blinking 2Hz Error 2Hz 3 times every 2 sec 3 times every 3 times every 3 times every electronic All 3 LED s blink on 0 5 sec off 0 5 sec Stuck alternating in direction 1 sec on 0 5 sec capsule front 1st Lungo 0 5 sec off 0 5 sec 2nd Espresso 0 5 sec 3rd Ristretto 0 5 sec All 3 LED s blink NAN off 1 sec alternating in direction on 0 5 sec No water back 1st Ristretto 0 5 sec 2nd Espresso 0 5 sec 3rd Lungo 0 5 sec Blinking 1Hz on most frequently used cup size of the last 10 coffees minking 1Hz Blinking 1Hz Blinking 1Hz Heat up Espresso when machine is new Change to user selection when other capactitive area is touched Steady light on most frequently used cup size
4. dund L AOLL 00L oo qouuau bz e O OG AZLAN WOLL obun WGZ ONDJISIN WOP ossaJds43 UOIJEJOSI joe1d 5 J FI 7 5 5 Wiring diagram 100 V IEC Japan Version 1 2 en U service manual 44 Z Z 9 A f ii c lt G a E gt D N D di c a SI god 3811 uonoejoud gt av loyo 2 x h b A a T NL LLI AOLL 00L YN3 AN NOLL OOL duing o0 qouueu T T U x Cn R G A b D O e e m L x OOO goguen 5 AG AZL JOON IWOLL Bun ILUGZ OJJANSIH JuQp ossaJds3 Y O S LO UOIJEJOSI apid aav EN 7 n 2 46 Symbolic illustration of function test equip ment FUNCTION TESTS 8 FUNCTION TESTS 8 1 Safety instructions Some function tests are performed with an energized partly opened coffee machine Danger of electrocution A Mains voltage inside the coffee machine Do not touch any live part while performing tests A Danger of burns Hot parts and water under pressure inside the coffee machine Do not touch any hot parts while checking for leakages Always wear protective goggles 8 2 Required equipment 8 2 1 Overview 1 Electronic thermometer Test equipment for protective earth con 2 Timer tinuity test and protective insulation test 3 Measuring cup 5 Flashlight U service manual Version 1 2 en FUNCTION TESTS 8 3 Measure co
5. 52 Joa ENN 52 90 3 SSIS egiu6ncCou c 53 8 6 4 What to do if the insulation test fails 54 9 Explosion drawingds anana nan aaa anae done 55 9 1 C50 Explosion drawing 55 92 D50 Explosion drawing rikana c sre 92 cera ki ka Erika ina us dae 56 10 DATIS ISU suma as e an 57 10 1 Nespresso C50 and D50 e 5 Version 1 2 en U service manual 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 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 U coffee machines C50 and D50 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 Only use original spare parts from your official supplier for maintenance and repair work Spare parts lists and exploded drawings are subject to change To optain the last version plea
6. Mu Dismantle the electronic device clip with a screwdriver Unplug cables and remove electronic device K e KN MF o EL ez U J Po Plug out low pressure connector pump pump cables Motor cables NTC Triac signal cables XHP 3 connector triac power cable and STB cable Remove pump isolation Assembly checkpoint Never re use damaged cables U service manual Version 1 2 en REPAIRS 7 4 7 Remove flowmeter FM PCB e Dismantle the electronic device clips with a screwdriver lt Latch will break if not e Dismantle the flowmeter clips by hand and remove flowmeter handled carefully Assembly checkpoint Never re use a dismantled flowmeter Assemble a new flowmeter 34 U service manual Version 1 2 en El 35 REPAIRS 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 U service manual Version 1 2 en e Push the ther moblock to the back side and upward at the same time 36 REPAIRS E Tan gi A i il Remove brewing unit U service manual 2 Tini l ALI IE A LAN NI A TET 4 e f Ga SS AG
7. M IG me p p 1 i W LI JO fi y Jr TLU NI MIN VU n Nie i De x r a un l rr l N TA lt SS 2 x i ge C y LAL K ye NG LI Dismantle the brewing unit device clips with a screwdriver 7 4 10 Remove brewing unit device and steam cover Dismantle the steam cover clips with a screwdriver and remove steam cover Version 1 2 en REPAIRS 7 4 11 Remove BU housing and gear wheels Use e g a cordless drill driver Lift up the cover once the guides are at the rear vertically positioned Version 1 2 en U service manual 3 7 38 REPAIRS Remove BU housing bush bearing gear lever right gear lever left Assembly checkpoint in left side ok l 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 REPAIRS 7 4 12 Remove thermoblock and capsule cage Loosen 2 screws to remove thermoblock and capsule cage Hemove TB sleeve and o ring seal tb tube Version 1 2 en U service manual 39 Depending on national regulations one or two fine wire fuses are mounted on the thermoblock 40 REPAIRS 7 5 Wiring diagrams 7 5 1 Wiring diagram 220 V 240 V IEC c o amp o LD o o G Q eb o o ec Espresso 40ml Ristretto 25ml
8. U service manual Overheat protection EN4 220 240V Motor 12V DC Pump MMI PCB 12V DC Triac PCB Lungo 110ml Thermobloc jejjnoN eur Main PCB Version 1 2 en H 41 REPAIRS 7 5 2 Wiring diagram 120 V UL USA Canada god SENI uonoojoJd Je9uJ9AQ IN NMZ LOC L VNA JOJQOWJSU dund e 5 OQ ACL JOIN luo L oBun LUGZ ONAUSIY uuggp oss ids3 UOneJosi e oede2oe E U service manual Version 1 2 en REPAIRS 4 god SELL uonoojoJud J E9UJSAO m F E Was Pa K m lac gov AP gt A EU Tp ME Lee 931 AZZL 0ZL PNI DIN ZCV AOCL dung JOJQOWJSU L lt o o a O 1 OG ACL 10 0IN WOLL OBUNI UGZ ones Uoy ossaJds3 UOIJEJOSI 9 9e 1d999N CCR god UIEN 7 5 3 Wiring diagram 127 V IEC Brazil Version 1 2 en U service manual 42 H 43 REPAIRS god SELL UO1J99 01dA E9UJSAO 241 NMC LOC L VNA OIN ALCV AOCL dung 20 qOUWJ U L b 5 G O dod UIEJN OG AZL OON luo OBUNI usoj ugg ossaJds43 UOIJEJOSI 9 oe1dooo E 7 5 4 Wiring diagram 127 V IEC Mexico U service manual Version 1 2 en REPAIRS god uL Nog a T 4 v S e ko a N gt 4 de T uonoojoJud JESUJSAO
9. 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 Protective measures e Do not change the thermoblock wiring thermo fuses and NTC sensor e Refer to wiring diagram when reconnecting cables and wires Residual water e If itis necessary to pull off hoses hold ready a small receptacle and a towel to collect and wipe away leaking water A special procedure is necessary to empty the fluid system of the coffee machine for repair or shipment refer to Empty water system on page 19 7 3 Tools and accessories With the following assortment of tools all repairs described can be made Abit holder with f appropriate bits can also be used MAR TX10 2mm 3 5 mm 8 mm 1 Torx screwdriver TX10 70 3 Pointed pliers 2 Flat blade screwdrivers 4 Side cutting pliers size blade width 5 Receptacle and towel to catch and 00 2 mm wipe away leaking water 01 3 5 mm 05 8 mm 26 U service manual Version 1 2 en REPAIRS 7 4 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 e 1 Check and remove any capsule from the brewing unit Close the slider e 2
10. Espresso when machine is new or on user Ready selection when a Steady or off Steady or off Steady or off capacitive area has been touched Switch to most frequently used cup size after each coffee Brew U service manual Version 1 2 en agas State events LED s Lungo status Brew Steady on Espresso Steady Steady on Lungo Steady Off Brew Lungo 4 sec Steady on cup size that after brew has been brewed Steady or off Steady or off Steady or off Rinse Steady Steady Steady All LED s steady on Descal All LED s blinking ing ready together 2Hz Blinking 2Hz Blinking 2Hz Blinking 2Hz Descal ing pump on All LED s blinking together 2Hz Blinking 2Hz Blinking 2Hz Blinking 2Hz Descal ing pump off All LED s blinking together 2Hz Blinking 2Hz Blinking 2Hz Blinking 2Hz Emptying Espresso On 0 5sec after amp T 6 sec of pressing touch off On 0 5sec off gt 115 C confirmation Einptymg oam S Tolo SINK Blinking 1Hz Off Blinking 1Hz ing together 1Hz Overheat All blinking together 1Hz Blinking 1Hz Blinking 1Hz Blinking 1Hz Switch Auto 2d Espresso On 0 5sec Off On 0 5sec Off time after 30min Switch On 0 5sec Off 0 5sec Auto off imas Espresso On 3 x 0 5sec Off m ipn Off 9 min 5sec On 0 5sec Factory setting Ristretto On 0 5sec Off Off On 0 5sec Switch to Ristretto E
11. P Circlip D 7 e 1810 29125 Gear lever right 29509 1 Connection Cable EU compl ass 29509 2 Connection Cable CH compl ass 29509 3 Connection Cable UK compl ass 29509 4 Connection Cable AU compl ass 29509 5 Connection Cable IL compl ass 00 A U service manual Version 1 2 en PARTS LIST Explo Pos Drawning Part Component 29513 Connection Cable JP compl ass 29512 1 Connection Cable BR w label 127V 29512 2 Connection Cable BR w label 220V 49 2040 P Pumpsuppon OO Version 1 2 en U service manual 59 60 PARTS LIST U service manual Version 1 2 en
12. off displayed insulation resist ance or test result 10 Insert tip of red test probe up into cap sule ejection slot and touch thermo block 11 Press measure button 12 Read off displayed insulation resist ance or test result 13 Touch ground pin of power plug with red test probe 14 Press measure button 15 Read off displayed insulation resist ance or test result c The insulation resistance must be always higher than 300 kOhm 300 000 Ohm 16 Switch off test equipment 17 Short red with black test probe to make sure that test voltage is dis charged 18 Fill in results in a test report 8 6 4 What to do if the insulation test fails Risk of damage A sparkover can damage the electronic control board etc Assume that the coffee machine is defect after a failed insulation test e Check thermoblock especially connections Check temperature sensor NTC e Check wiring and locate fault After fault clearance proceed with troubleshooting check list see page 23 U service manual Version 1 2 en EXPLOSION DRAWINGS 9 EXPLOSION DRAWINGS 9 1 C50 Explosion drawing gt 25 Design feature Design feature Front Cover C Capsule Container U Design feature Drip Grid C Version 1 2 en U service manual 55 EXPLOSION DRAWINGS 9 2 D50 Explosion drawing ON Design feature Design feature Front Cove
13. 1 RCD protected socket outlet 3 GFCI socket 2 Plug in RCD unit 4 Plug in GFCI Danger of burns Hot parts and water under pressure inside the coffee machine particularly in the thermoblock e Let coffee machine cool down before cleaning or disassembly Version 1 2 en U service manual 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 MAIN COMPONENTS 2 MAIN COMPONENTS 2 1 Overview longo 11 HA spresso 40 m 8 c 1 Ristretto 25 ml 2 Capacitive touch area 5 Coffee outlet Slider for capsule insertion slot 6 Swivel water tank arm 7 8 Water tank 1 2 3 Used capsule container and drip tray 4 Water tank lid Removable cup support and drip grid U service manual Version 1 2 en MAIN COMPONENTS 2 2 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 U service manual 7 MAIN COMPONENTS 2 3 Fluid system ASAN mi NR Water tank Flowmeter Pump High pressure connector Thermob
14. 1 1 Housing parts bro necessary ken or damaged 1 Check the coffee NO continue machine for visi YES replace power cord ble damage 1 2 Power cord dam NO connect power cord of aged machine to the mains and con tinue 2 1 Cup support with YES check if waste water NO replace waste water con capsule and waste container has its metallic plate tainer water container for magnetic mounting does not remain in NO continue fitting position 2 Check mechani YES Empty the capsule con cal components YES slider does not close or tainer 2 2 Slider malfunction close properly YES Check that no capsule is YES replace brewing unit NO continue blocked inside the machine NO replace slider unit 2 3 Capsule is not ejected correctly NO continue 3 Fill water tank 3 1 Water tank leaks PES Ep c NATA NO continue a YES power cord is okay YES continue connection NO replace power cord b YES On Off switch has typ YES continue A switching noise NO replace functional block f T c YES pump works press a YES continue with point e Gonee ES coffee button NO continue with point d not working does not function d YES both coffee buttons YES replace pump a working NO replace functional block e YES fine wire fuses or triac YES replace thermoblock on thermoblock defective NO continue f YES wiring is okay YES replace functional block NO continue with poin
15. 2013 compliant Power consumption 220 240 V mains voltage approx 1260 W 100 110 120 127 V mains voltage 1160 1370 W Power consumption of coffee machine main components for all voltages and frequencies Thermoblock G 1200W Energy consumption CECED FEA 2009 method Energy efficiency class level ssssscssesscssesscesesssssunssennns A 4096 Daily energy consumption a a aee 76 Wh Annual energy consumption i 28 kWh Pump Pump pressure Max DEFMISSIDIE ii 20 bar 3 bar During coffee preparation depending on the type of coffee 9 16 bar Capacities pick ch S E approx 0 8 Tray water capacity eee e eee min 100 ml Capsule container r approx 10 capsules Version 1 2 en U service manual EuP Energy using Products oee commission regula tion no 1275 2008 of the European Union Advised water tank capacity to avoid spilling 11 12 TECHNICAL DATA Volume of prepared coffee factory settings TANTEN 25 ml 4790 Small cup Espresso nennen enne nnn nennen nnn nnn nnn 40 ml 47 Ega CUP LUNGO EL EO a an ajan A 110 ml 7 customer settings Programmable sett
16. C Heat up too slow Starts pump Stops pump after 10 sec Heats up thermo block to 105 9C 10096 power Sweetie Switch off machine moblock Switches off machine Blocks machine for 10 min Resets programmed volumes to factory settings Ristretto 25ml Espresso 40ml Lungo 110ml Proceeds with self test Reset also the auto mode automatically matic off mode to 9 min the most frequently used cup size to espresso Switch off machine after 9 min resp 30 min if no coffee is brewed or 9 min resp 30 min after last brewed coffee Machine indicates fail ure with blinking coffee buttons as long as the failure is present When failure is fixed Version 1 2 en 4 4 Empty water system OPERATION 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 Remove the water tank Place a container under the coffee outlet 4 Machines turns to Off mode automati cally when empty Version 1 2 en Open slider Press and hold the Ristretto amp Lungo controls together for at least 6 sec The other control flash for confirma tion Then close the slider to start pro cedure U service manual After this procedure the coffee machine will not be ready for approx 10 min until the thermoblock cools t
17. Empty water system if hoses have to be detached for repair see Empty water system on page 19 e 3 Disconnect power plug and let coffee machine cool down e 4 Remove all detachable parts from coffee machine Cup support drip grid capsule container drip tray water tank with lid Version 1 2 en U service manual 27 REPAIRS 7 4 2 Remove cover e Use a wrap foil to pro tect the cover during service e Loosen 2 screws on the machine floor 1 e Take care not to e Remove the cover by hand 1 scratch the surface and keep the cover at a safe place 28 U service manual Version 1 2 en 7 4 3 Remove front cover and drop stop Dismantle the front cover clips by hand 1 Remove front cover 2 Z IQ SG QNA SVEN LI So e Dismantle the drop stop clips by hand Remove the drop stop Version 1 2 en REPAIRS U service manual e Todismantle the drop stop the brewing unit must be closed Use a a cordless drill driver connected to the motor to close the unit or before dismantling the machine start a coffee without a capsule and remove the power plug dur ing extraction 29 30 REPAIRS 7 4 4 Remove slider chassis and slider unit L GA A e N DS
18. SERVICE MANUAL U COFFEE MACHINES U C and D C50 D50 Version 1 2 en CONTENTS 1 General safety notes ii 5 2 Main components REORUM 6 ENN 6 22 O NDI i Ss SN EE EN 29 vies SIE T 8 3 Technical datla aaa rr nnn nsns nn 9 31 Rand Polesine 9 3 1 1 Examples of brand specific rating plates aana n anae 9 3 1 2 Rating plate details example 10 3 2 Technical SOC CIC allo Sarai 11 3 2 1 Dimensions and weight amp size 13 4 Obperation ii 14 4 1 Generalinformation i 14 4 2 Status indication ananananannanaanananannananannannunanannunanannunanannnnanannananannannanananaa 14 4 3 Machine modes 17 4 4 Empty water System e 19 5 Maintenance sasae aee eea eea aee a aaa aaa NK aaa Na N eaaa aaa anaa 20 Sil DE ANTI a aaa aaa aaa aa a ana ra E 20 5 1 1 Descaling procedure s sscssesscessssscssssssssunsssquntcensusss 20 52 Cleaning procedure ss esssscssssscssssssssusscsssssessuntenunssennattesnassens 22 6 Troubleshooting see e 23 MEE a y e MIS akkaniti tilka ttie i
19. ains plug before disassembly the coffee machine must be free of voltage Danger of burns Hot parts and water under pressure inside the coffee machine ther moblock in particular Let coffee machine cool down before disassembly Only use original spare parts from your official supplier for maintenance and repair work 7T 2 Repair and mounting tips These general advices are completed with specific repair tips in this chapter Additional information For components not mentioned in this repair chapter refer to the chapters Explosion drawings on page 55 and Parts list on page 57 Snap connections Parts of the case and components of the coffee machine are connected screwless with latches amp gt When loosening these latches proceed with care and patience to avoid causing any damage Designation of spare parts Position numbers are subject to change The components in the following illustrations are indexed with position numbers without notice For oee separate spare parts list for corresponding spare part numbers spare part orders please check current spare part drawings in EF webshop Electrostatic discharge ESD protection The service technician must must observe basic ESD protection measures when installing a new electronic component Version 1 2 en U service manual 25 REPAIRS Wiring arrangement Random changes in the wiring arrangement of the wired model version during a repair can cause
20. b Volume brewing mode program ming cup size 5 Descaling mode Version 1 2 en Programming mode Open the slider Press and hold any coffee button for more than 3 sec e Switch on machine wait until ready Press and hold the 3 coffee buttons for at least 3 sec Helease corre sponding coffee button when machine is in programming mode Switch off machine Press and hold the 3 coffee buttons for at least 3 sec Note When machine is switched off during any descaling mode then it goes to descaling mode ready state after next switch on Regulates tempera ture to 55 C after pump was started Stops and starts pump with any coffee button no volume brewing in descaling mode U service manual 1 18 OPERATION 6 Emptying mode evaporing 7 Resetting mode 8 Auto switch off mode factory setting of 9 min can be changed to 30 min 9 Failure mode U service manual Switch on machine 1 Remove the water 2 tank Open the slider Press and hold the Ristretto and Lungo controls together for at least 6 sec The other control flashes for confir mation Close the slider to start the procedure Switch on machine Press and hold the Espresso and Lungo controls together for at least 4 sec The other control flashes for confirmation Automatically after a certain period of non use Automatically by fol lowing failures a NTC short circuit b NTC not connected
21. block casing This test assures that the ground earth connection does not have an interruption between the power plug and the thermoblock the permissible ground resistance is less than 0 3 Ohms with a test current of 200 mA DC Test equipment Special test equipment is needed that complies with the regulations to perform protec tive earth continuity measurements Detailed requirements and tolerances must be veri fied by your local authorities or measurement supplier in any case Test report For legal reasons a repair or test report should be prepared and filed with following infor mation customer name address type and serial number of coffee machine date of repair test s performed test s measuring value s used test equipment signature U service manual Version 1 2 en 8 5 3 Test sequence Danger of electrocution Do not plug in the coffee machine during the protective earth continuity test FUNCTION TESTS Read and observe safety instructions in user manual of test equipment 1 Connect black measuring cable to ground pin of power plug with an alli gator clip example shown Swiss power plug IN N SENIN Q o SES SSSSSESS SSS KON lt GA Q SS N S Zx TARON e MOH lt BSS Q ROO MIN HAN NUN WOOO WOO AU SU 3 Remove water tank 4 Remove maintenance unit 5 Open slider Version 1 2 en 2 Switch on
22. d le net ha aa a 23 7 MODA CTT 25 7 1 Safety instructions iii 25 Te Repar and MOUNUNG NPS riali 25 73 Tools and accessories ananannnnnnnnanannnananannunnnnnnananananunannnnnnananananannnnnnnn 26 7 4 General disassembly sssseesssssscessssssessssssssessunssseqnnsssennnnssttts 27 7 4 1 Prepare coffee machine for disassembly 27 AD Remove COVE P RRRRRRMIEEA 28 7 4 3 Remove front cover and drop stop 29 7 4 4 Remove slider chassis and slider unit 30 7 4 5 Remove pivot bottom cable bracket power cable 32 7 4 6 Remove electronic device 33 7 4 7 Remove flowmeter FM PCB a eaaa eaaa eaaa anna anna aee nean 34 7 4 8 Remove high pressure connector 35 FAD REMOVE s e rica ridere idi kaka ei aka 35 7 4 10Remove brewing unit device and steam cover 36 7 4 11 Remove BU housing and gear wheelSs n anane n enere n ene enen 37 7 4 12Remove thermoblock and capsule cage 39 U service manual Version 1 2 en 1 5 NMIOAGCaQ AMS MNT 40 7 5 1 Wiring diagram 220 V 240 V TEC
23. ence Danger of electrical shock short circuit A Do not plug in the coffee machine during insulation test A Danger of electrical shock Do not touch tip of test probes Do not touch metallic parts of coffee machine during test Read and observe safety instructions in user manual of test equipment e This test sequence is only an example and has to be adapted to applicable national stand ards and regulations 1 Connect the phase and neutral pin of the power plug together with a test adapter procured by the repair centre 2 Connectthe black measuring cable to the test adapter see image e Use a short circuit plug or special alliga tor clips etc as sub stitute for this test adapter 3 Switch on test equipment and select an insulation test voltage of 500 V DC e Symbolic illustration of test equipment e Some test equipment displays test passed or failed instead of the insulation resistance 4 Touch magnet 5 with red test probe Press measure button Read off displayed insulation resist ance or test result oL The insulation resistance must always be higher than 300 kOhm 300 000 Ohm Version 1 2 en U service manual 53 e By looking into the capsule ejection slot form below metallic parts of the thermoblock are visible on both sides of the capsule cage 54 FUNCTION TESTS 7 Touch slider with red test probe 8 Press measure button 9 Read
24. essurized parts while checking for leakages Always wear protective goggles Preparations 2 Remove top cover according to General disassembly on page 27 F Z KY BRS lt Z XS S N CERES XL gt 5 Turn machine ON by either pushing the slider or touching the controls The machine heats up Version 1 2 en 8 4 2 Test run 6 Touch the Lungo button 7 Completely open the slider and insert the prepared capsule 9 Checktightness of extraction chamber drops or leakage Version 1 2 en FUNCTION TESTS FA FEES m QE CUP QUE K ww 8 Close the slider The pump starts to build up a pressure of approx 20 bar 10 Check connections under pressure for audible and visible leaks Pay special attention to the high pres sure connector 11 Insert capsule container with drip tray and attach cup support 12 Touch Lungo button to stop pump and eject capsule 13 Proceed with repair if needed or reas semble top cover U service manual Do not run the N pump for more than 30 sec e f machine stops dur ing test simply touch Lungo button a
25. ffee temperature 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 slider 2 Wait 10 sec 3 Press button again to stop or pull the sticker 4 Empty measuring cup and place it back on cup support 5 Insert capsule Cosi is best suited 7 Wait until the measuring cup contains 6 Press the Lungo button again 20 ml of coffee 8 Then measure the coffee temperature approx 5 10 mm under the coffee out let cx The coffee temperature should be 86 C 13 C 187 F 5 4 F Version 1 2 en U service manual 47 e The prepared capsule Z will not be perforated by the blades and blocks the water flow through the capsule cage 48 8 4 1 3 Prepare a capsule for the tightness and leakage checks squash capsule by pressing the top with the thumb Fill water tank and place it on its arm 4 Connect machine to mains U service manual FUNCTION TESTS 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 Do not touch any hot pr
26. gain Always wear pro N tective goggles during the test e Note on point 9 A few drops of leakage can also appear if the cap sule is not tight In this case redo test with another cap sule Let machine cool down if capsule is blocked in the capsule compartment Then open slider and remove blocked capsule 49 Ask Nespresso for recommendations about test equipment 50 FUNCTION TESTS 8 5 Protective earth PE continuity test 8 5 1 What is the protective earth continuity test about This test is only necessary for class 1 equipment three wire power cord with protective earth after a repair whenever a general disassembly was performed Therefore all U models have to be tested after general disassembly except country specific models USA Canada Japan without a protective earth connection refer to Wiring diagrams on page 40 and following 8 5 2 General Legal regulation In case of a repair modification of the coffee machine the repair centre is bound by law to protect the user consumer by restoring the regular condition of the appliance and performing the mandatory tests according to applicable national regulations e g DIN VDE 0701 or international regulations e g EN IEC 60335 1 Safety of house hold and similar electrical appliances Description Protective earth continuity measurements are made between the protective earth terminal of the power plug and the thermo
27. ing range 20 200 ml Environmental conditions Operating temperature 5 Cup to 45 C 41 F up to 113 F Storage temperature 25 C up to 65 C 13 F up to 149 F mier m up to 2500 m above sea level LU l A no restrictions Various data PCM AUG vene 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 9C 333 F Coffee temperature at outlet 86 C 13 C 187 F 15 4 F DESCAI I temperature EE EE Kek setting 70 C 158 F U service manual Version 1 2 en TECHNICAL DATA 3 2 1 Dimensions and weight amp size Dimensions in mm 202 l 366 115 251 88 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 138 mm Macchiato mode Power cable length
28. l regulations e g DIN VDE 0701 or international regulations e g EN IEC 60335 1 Safety of house hold and similar electrical appliances Description The insulation test assures that wiring and insulation of the coffee machine fullfill the normative require ments after a repair rates the insulation capability of the coffee machine iS avery dangerous test because of a high test voltage 500 V DC 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 Special test equipment is needed that complies with the regulations to perform insulation and withstanding voltage tests Detailed requirements and tolerances must be verified with your local authorities or measurement supplier in any case Ideally the test equipment has a national power socket for testing so that the coffee machine can plugged in directly Otherwise a special shunt is necessary to connect the phase and neutral pin of the coffee machine s power plug Test report For legal reasons a repair or test report should be prepared and filed with following infor mation customer name address type and serial number of coffee machine U service manual Version 1 2 en FUNCTION TESTS date of repair test s performed test s measuring value s test points used test equipment signature 8 6 3 Test sequ
29. lock Capsule cage RSL AS Par A Sass U service manual 10 7 Coffee outlet 8 Drop stop 9 Capsule container 10 Drip tray 11 Cup support Version 1 2 en TECHNICAL DATA 3 TECHNICAL DATA 3 1 Rating plates 3 1 1 Examples of brand specific rating plates ied rero MA oi of the coffee NESPRESSO U C50 NESPRESSO U D50 e This overview shows 220 240V 50 60Hz 1260W 220 240V 50 60Hz 1260W examples of various i l lt brands and is subject MADE IN HUNGARY MADE IN HUNGARY to alterations RoHS T RoHS TT COMPLIANT COMPLIANT 2002 95 C wm 2002 95 C wm 060234721000178207 060234721000178207 KRUPS U XN250A10 DeLonghi U EN110 B www krups com 220 240V 50 60Hz 1260W REF XN250A10 FBO WWYY R MADE IN HUNGARY 220 240V 50 60Hz 1260W x MADE IN HUNGARY xx C PE 06023472 1000178207 00017 INN MAX TX 180 U Pure Grey MAQIMIX M 130 U noir black DKB Household Switzerland AG Eggbuhlstrasse 28 Postfach 220 240V 50 60Hz 1260W CH 8052 Ziirich Switzerland Art Nr A12187 MADE IN HUNGARY 220 240V 50 60Hz 1260W RS pa x MADE IN HUNGARY CE p TT Il 06023472 1000178207 0001782 KOENIG U Pure Black DKB Household Switzerland AG Eggb hlstrasse 28 Postfach CH 8052 Z rich Switzerland Art Nr B03130 220 240V 50 60Hz 1260W CES Rot MADE IN HUNGARY CEA 0001782 Version 1 2 en U service manual 9 By decoding the date of production and machine t
30. o below 100 C 19 Duration approxi mately 15 minutes Observe the safety A instructions on the descaler package e Usea container with a capacity of min 1 I 20 MAINTENANCE 5 MAINTENANCE 5 1 Descaling Only use Nespresso descaler 5034 or Nespresso descaling kit A 3035 CBU 2 never use vinegar Descaler can damage casing and surfaces Immediately clean drops of descaling solution 5 1 1 Descaling procedure Need to descale depending on water hardness soft 0 17fH 0 9dH descale after 4 000 cups medium 18 35fH 10 19 dH descale 2 000 cups hard over 36fH over 20dH descale after 1 000 cups 051 lA 1 Empty the drip tray and the used 2 Fill the water tank with 1 unit of Nes capsule container presso descaling liquid and add 0 5 L 17 oz of water 3 Place a container minimum volume 4 Activate the machine by either pushing 0 6 L 20 oz under the coffee outlet the slider or one of the cup selection touches 5 Blinking light heating up 7 To enter the descaling mode push all 6 Steady light ready the 3 controls simultaneously for at least 3sec A short beep will confirm this The control area will start blinking U service manual Version 1 2 en MAINTENANCE 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 Machine stops tainer and touch any control to re
31. oblock 47 high over 89 C NO continue YES replace high pressure connector NO continue 7 Check for leakage 7 2 Brewing unit leaks YES replace brewing unit and sufficient flow NO continue rate 7 3 Rate of flow not YES coffee machine is calci YES descale coffee machine within standard fied see page 20 7 1 Hose connections leak range 60 120ml in NO continue with point 9 NO replace pump 30 sec 8 Descale coffee YES descale coffee machine mane 8 1 Coffee machine is see page 20 calcified pag if necessary NO continue with point 9 YES descale and rinse coffee YES inform customer to des machine again to clean water cale coffee machine periodi circuit see page 20 cally and to use the specified NO continue descaling product only No errors found according to YES for more information check list please contact Nespresso Service Division 9 Check water tank 9 1 Particles of calcium contents after des and rust visible in caling and rinising water 10 Final cleaning see page 22 End of check list U service manual Version 1 2 en REPAIRS 7 REPAIRS 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 7 1 Safety instructions Risk of fatal electrical shock Mains voltage inside the coffee machine Disconnect the m
32. peat when water tank is empty the procedure 8 If slider is closed push any control to 10 Empty and rinse the water tank cap 11 When reagy touch any control to rinse sule container drip tray and cup sup the machine Machine will stop when port thoroughly Fill water tank with done potable water LO 12 To exit the descaling mode push all the 3 controls simultaneously for at least 3sec A short beep will confirm this The machine is now ready for use Version 1 2 en U service manual 21 e Never use brushes and or cleaning agents that contain aggressive or chemical components resp solvents Do not put any part in a dishwasher Use only a damp cloth or sponge and a mild cleaning agent if necessary e Do not use a brush the water tank can be scratched 22 MAINTENANCE 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 T A 1 Do not use any strong or abrasive 2 Never immerse the appliance or part cleaning agent or solvent cleaner Do of it in water not put in a dishwasher 3 Cleanthe coffee outlet regularly with a damp cloth U service manual Version 1 2 en TROUBLESHOOTING 6 TROUBLESHOOTING 6 1 Check list Measure Further measures Check Error symptoms I repair work repair work YES replace housing parts if
33. r D Capsule Container D Design feature Drip Grid D 56 U service manual Version 1 2 en PARTS LIST 10 PARTS LIST 10 1 Nespresso C50 and D50 3 MES enak 3 922 Raen gt 3 estera Gowertaupe O O Cover orange 20204 P Blind 29808 A Touchpad PeBe woe P Baie 40 A Chassis 7 m P Dosp O O 89200 P EN P NEA l A I i eer e mowo eee P Dipowo 39 m P Maegudng 4 26005 P T 8 2908 P RES aaa 46 2008 P Ruberto i8 2904 P Cabebaks i9 m P Papan 68 9 mee P Papan is i9 26280 P Pivtbotom UL 20 29400 P Low pressure connector WT m mu e N Version 1 2 en U service manual 57 58 PARTS LIST Explo Pos Drawning Part Component 35 wee P Waern 36 men P Comar ar tr P Mihpresswecomedo m mey P ORWS4xiS 2 2 P Pumpieoaton 30 iwi P PumpENAZ22AN 30 tere P PumpENa20427V UL 30 ters P PumpeNato0 ti0v 30 teea P PumpEN4120 27V IEC 3 2988 P Pumpsupportspring 32 29401 P Low pressure connector pump e este IP Gig seal ib IP Raas an 2908 P Buehbeaing Ce P Do 43 90106 10
34. se contact your official spare parts supplier 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 0 First released service manual version in English only Version 1 1 e Updated version including several corrections in English only e Change machine name from Pulse to U Update of several drawings e Modified operating procedures for the following machine modes Brewing mode programming mode Descaling mode Emptying mode Resetting mode Version 1 2 Function test added Tightness and leakage checks U service manual Version 1 2 en GENERAL SAFETY NOTES 1 GENERAL SAFETY NOTES 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 Risk of fatal electrical shock and fire Mains voltage inside the coffee machine e Unplug appliance before cleaning e Never clean wet or immerse plug cord or appliance in any fluid e Disconnect the mains plug before disassembly the appliance must be free of voltage 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
35. spresso and e Ono Bese taso power off Lungo together On 0 5sec i i Version 1 2 en U service manual 15 16 OPERATION Mac De State events LED s Lungo status Program ming Lungo Histretto amp Espresso On 0 5sec confirmation S Ristretto amp Lungo On S TNNT E 0 5sec confirmation spresso v Espresso amp Lungo On Gat 0 5sec confirmation Ristretto OG U service manual On 0 5sec On 0 5sec Version 1 2 en OPERATION 4 3 Machine modes This table helps to understand the operating modes of the U coffee machines Heats up thermoblock to ready temperature ui Every time after switch 90 C within 30 sec e g switching off N ON MACNINS without overshooting Macaig target temperature Tests e NTC short circuit e NTC connected e Checks if thermo block reaches ready temperature within 2 min after switch on 1 Heat up mode Every time after switch ing on machine e g switching off 2 Self test mode machine After heat up and self test mode was ok After brewing or volume brewing Keeps thermoblock e g switching off coffee temperature at 90 C machine After reset mode After leaving descaling mode 3 Ready mode Press and release any coffee button when machine is in brewing mode or automatic exit given by the flowmeter 4a Brewing mode Brewing mode Press and release any coffee button 4
36. t 4 2 NO replace defective cables YES thermoblock is hot YES switch off on coffee 4 2 Both coffee buttons NO self test ok continue machine and check again are blinking 3x fast 4 Move Machine to power on to per form automatic self test NO replace thermoblock or functional block YES a water system is empty YES fill the water system NO continue YES b coffee machine is cal YES descale coffee machine cified see page 20 NO continue 5 Rinse coffee 5 1 No water at coffee YES c pyramide plate YES replace brewing unit machine outlet blocked NO continue YES d flowmeter blocked YES clean or replace flowme ter NO continue YES e pump cannot produce YES replace pump sufficient water pressure NO continue Version 1 2 en U service manual After an initial inspec tion in accordance with this check list errors are quickly found and corrected with the appropri ate measure Therefore adhere to the sequence of the check list Repair every occurring error and work the check list through until it is completed 23 24 TROUBLESHOOTING Measure Further measures Check Error symptoms I repair work repair work 6 Measure coffee 6 1 Temperature is too YES descale coffee machine temperature dur low below 83 C see page 20 ing coffee prepa NO continue ration see page 6 2 Temperature too YES replace therm
37. test equipment and select 7 protective earth continuity test Insert tip of red test probe up into cap sule ejection slot and touch thermo block Press measure button and read off displayed resistance cg The resistance must be lower than 8 0 3 Ohm Fill in measured value in a test report U service manual e This test sequence is only an example and has to be adabted to applicable national stand ards and regulations e Symbolic illustration of test equipment 51 Perform the protec tive earth PE conti nuity test at first if itis mandatory Ask Nespresso for recommendations about test equipment 52 FUNCTION TESTS 8 5 4 What to do if the protective earth continuity test fails Check measure ground wire connection of power cord replace if necessary Check measure ground connection terminal on thermoblock Retighten terminal screw if necessary 8 6 Protective insulation test 8 6 1 What is the protective insulation test about This test is necessary for class 1 and 2 equipment with without protective earth after a repair whenever a general disassembly was performed 8 6 2 General Legal regulation In case of a repair modification of the coffee machine the repair centre is bound by law to protect the user consumer by restoring the regular condition of the appliance and performing the mandatory tests according to applicable nationa
38. ype the coffee machine can be identified exactly 10 TECHNICAL DATA 3 1 2 Rating plate details example U C50 NESPRESSO 220 240V 50 60Hz 1260W MADE IN HUNGARY Pe NAA 12115 C50 j 0440 782 07 X Art Nr B03130 ZA COMPLIANT 5 EC Serial number Machine type Article number of the rating plate 0 Special disposal icon do not dispose with ordinary waste 11 Sign of conformity CE 1 Brand name 7 2 Voltage and power rating 8 3 Place of manufacture 9 4 National approval sign of Russia 1 GOST HR 5 Conformity with RoHS guidelines lead free solder etc 6 Barcode Decoding the alphanumeric serial number Example 12115 C50 j 0440 782 07 X TE T__ Checksum ___Color version Type of mains plug Mains voltage 777 Distributing partner U service manual Incremental number per production dav Manufacturing plant Manufacturer designation of the machine tvpe C50 12115 Date of production 12 year 2012 115 115th day of the year Version 1 2 en 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 Word 120 V 50 60 Hz drm i 127 V 50 60 Hz og F P 100 V 50 60 Hz EE WT u umu na uum NA ASAT aZ sl 110 V 60 Hz 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
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