Overview model Citiz .................. 13 3.4 Overview model Citiz & milk ................ 14 3.4.1 Overview milk frother AERO3 ............... 15 3.5 Overview model Citiz & Co ................ 16 3.6 Fluid System .................... 17 3.6.1 Water circuit diagram of core unit (all Citiz versions) ......17 3.6.2 Water circuit of models Citiz / Citiz & milk..........18 3.6.3 Water circuit of model Citiz & Co ............19 4 Technical Data ....................20 4.1 Rating Plates.................... 20 4.1.1 Examples of brand specific rating plates ..........20 ...
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8.7.5 Replacing automatic priming device (APD) .......... 102 8.7.6 Replacing thermoblock with NTC sensor and fine wire fuse(s) .... 104 8.7.7 Replacing electronic control board with button prints ......107 8.8 Disassembly of core unit, D range............... 109 8.8.1 General disassembly ................109 8.8.2 Replacing electronic control board with button prints ......116 8.9 Wiring diagrams ..................... 118 8.9.1 Wiring diagrams model Citiz............... 118 8.9.2 Wiring diagrams model Citiz & milk, EF 485 / 486 ......124 8.9.3 Wiring diagrams model Citiz & Co, EF 487 / 488 ....... 128 3 Citiz service manual ...
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9.9.1 What coffee machines have to be tested and when? ......144 9.9.2 General ....................144 9.9.3 Test sequence ..................145 9.9.4 What to do if the insulation test fails ............. 147 10 Explosion Drawings ..................148 10.1 Model Citiz, core unit D range (EF 483)............ 148 10.2 Model Citiz, core unit C range (EF 484)............ 149 10.3 Model Citiz & milk, core unit D range (EF 485).......... 150 10.4 Model Citiz & milk, core unit C range (EF 486).......... 151 10.5 Model Citiz & Co, core unit D range (EF 487).......... 152 10.6 Model Citiz & Co, core unit C range (EF 488).......... 153 11 Parts List ......................
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P R E F A C E Please keep this The purpose of this service manual is to provide the service personnel with all necessary manual together with information with regards to correct handling, maintenance and repair of the Citiz coffee the corresponding machine types EF 483/484, EF 485/486 and EF 487/488. service documentation. This way you are assured to have the necessary This manual should be used by the technicians as a valuable aid to guarantee the information. 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. 2 PDF versions of this For fast access to information directly from the PC or MAC monitor, this service manual service manual can Nespresso is available as PDF file and can be downloaded from the technical website be selected: under https://business.nespresso.com. • A highly compressed version with low picture ® resolution and small file The required utility software to read PDF files (Adobe Reader ) for PCs and MAC size. computers can be downloaded (under http://www.adobe.com) for free please click the • A version in print quality ...
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. As an additional safety measure, the use of a residual current device (RCD), also called the ground fault circuit interrupter (GFCI), in the repair centre is highly recommended. This device does not protect against electrical shock due to contact with both cir cuit 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 socketoutlet 3) GFCI socket 2) Plugin RCD unit 4) Plugin 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. 6 Citiz service manual ...
M O D E L O V E R V I E W 2 M O D E L O V E R V I E W 2.1 Model range With core unit Drange: With core unit Crange: 1) Citiz 3) Citiz & Co 2) Citiz & milk A core unit is the Each model ...
M O D E L O V E R V I E W 2.2 Core unit versions This comparison Drange Crange helps to identify the core unit version. 1) Coffee outlet 3) Coffee buttons 2) Closing handle 4) Cup holder There are additional Different components Drange Crange differences between the 2 versions (cov Coffee outlet (1) contured coffee outlet "flat" coffee outlet ers, wiring etc.) not men tioned in the table. Closing handle (2) chromiumplated closing handle black closing handle arranged on both sides of the arranged behind the closing Coffee buttons (3) closing handle handle Cup holder (4) cup holder with slotted recesses cup holder with circular recesses 8 Citiz service manual ...
M A I N C O M P O N E N T S 3.1 Overview core unit, Drange For platform compo nents refer to model overview. 1) Cup support 7) Button "small cup" (Espresso) 2) Waste water container 8) Button "large cup" (Lungo) 3) Capsule container (used capsules) 9) Side panels left/right 4) Coffee nozzle 10) Rear cover 5) Steam cover 6) Closing handle 9 Citiz service manual ...
M A I N C O M P O N E N T S 3.1.1 Interior view core unit, Drange 1) Button prints 6) Electronic control board 2) Capsule bay (with protective covers) 3) Brewing unit (TMBU, Tolkien Mini 7) Self priming device (APD) Brewing Unit) 8) NTC temperature sensor 4) Pump (Invensys CP4/SP) 9) Thermoblock (EF 2003) 5) Flowmeter (FHKSC12) 10 Citiz service manual ...
M A I N C O M P O N E N T S 3.2 Overview core unit, Crange 1) Cup support 7) Steam cover 2) Waste water container 8) Closing handle 3) Capsule container (used capsules) 9) Button "small cup" (Espresso) 4) Side panel, left 10) Button "large cup" (Lungo) 5) Side panel, right 11) Top cover 6) Coffee nozzle 12) Rear cover 11 Citiz service manual ...
M A I N C O M P O N E N T S 3.2.1 Interior view core unit, Crange 1) Capsule bay 6) Electronic control board 2) Brewing unit (TMBU, Tolkien Mini (with protective covers) Brewing Unit) 7) Self priming device (APD) 3) Button prints (under top cover) 8) NTC temperature sensor 4) Pump (Invensys CP4/SP) 9) Thermoblock (EF 2003) 5) Flowmeter (FHKSC12) 12 Citiz service manual ...
M A I N C O M P O N E N T S 3.3 Overview model Citiz This model is pictured with a Crange core unit. 1) Drip grid 6) Water tank connector 2) Drip tray 7) Power cord 3) Core unit (e.g. Crange) 8) ON/OFF switch (mains switch) 4) Water tank cover 9) Platform 5) Water tank The core units of This is the basic model with the smallest platform (9). ...
M A I N C O M P O N E N T S 3.4 Overview model Citiz & milk This model is pictured with a Crange core unit. 1) Drip grid 9) Lid 2) Drip tray 10) Milk frother start button 3) Platform 11) Water tank connector 4) Storage places for whisks 12) Power cord 5) Core unit (e.g. Crange) 13) Milk frother connector ...
M A I N C O M P O N E N T S 3.4.1 Overview milk frother AERO3 The milk frother AERO3 is part of the standard equipment of the model Citiz & milk. 1) Lid 6) Indication of 2 max. milk levels 2) Seal (120 ml/240 ml) 3) Jug 7) Mixer for hot milk 4) Power plug 8) Spring whisk for milk foam 5) Start button (red/blue backlighted) The inside of the jug (3) ...
M A I N C O M P O N E N T S 3.5 Overview model Citiz & Co This model is pictured with a Crange core unit. 1) Drip tray 5) Core units (e.g. 2 x Crange) 2) Drip grid 6) Water tank 3) ON/OFF switch (mains switch) 7) Water tank cover 4) Power cord 8) Platform The drip grid (1) exists in 2 versions, ...
M A I N C O M P O N E N T S 3.6 Fluid System 3.6.1 Water circuit diagram of core unit (all Citiz versions) 1) Water tank 6) Mini brewing unit (MBU) 2) Flow meter 7) Capsule container 3) Pump 8) Waste water container 4) Self priming device 9) Drip tray 5) Thermoblock Legend: Fresh cold water Fresh hot water ...
M A I N C O M P O N E N T S 3.6.2 Water circuit of models Citiz/Citiz & milk 1) Water tank 5) Flow meter 2) Water tank connector 6) Coffee outlet 3) Self priming device 7) Brewing unit 4) Thermoblock 8) Pump 18 Citiz service manual ...
M A I N C O M P O N E N T S 3.6.3 Water circuit of model Citiz & Co 1) Water tank 5) Flow meter 2) Pump 6) Thermoblock 3) Brewing unit 7) Water tank connector 4) Coffee outlet 8) Self priming device 19 Citiz service manual ...
T E C H N I C A L D A T A 4 T E C H N I C A L D A T A 4.1 Rating plates The type plate can be 4.1.1 Examples of brand specific rating plates found at the bottom of the coffee machine’s Nespresso, EUversion platform. This overview shows examples of various brands and is subject to alterations. EF484 Citiz C110 red EF483 Citiz D110 black EF486 Citiz & milk C120 red EF485 Citiz & milk D120 black EF488 Citiz & Co C130 red EF487 Citiz & Co D130 black 20 Citiz service manual ...
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T E C H N I C A L D A T A DeLonghi, EUversion EF483 Citiz D110 Limousine black/DeLonghi EN165.B EF483 Citiz D110 60's White/DeLonghi EN165.CW EF485 Citiz & milk D120 Limousine black/DeLonghi EF487 Citiz & Co. D130 Limousine black/DeLonghi EN265.BAE EN325.B Koenig, CHversion EF483 Citiz D110 Limousine black/Koenig Citiz EF483 Citiz D110 60's White/Koenig Citiz EF485 Citiz & milk D120 Limousine black/Koenig Citiz & milk EF487 Citiz & Co. D130 Limousine black/Koenig Citiz & Co. 21 Citiz service manual ...
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T E C H N I C A L D A T A Krups, EUversion EF484 CitiZ XN700510 grey EF484 CitiZ XN700610 red EF486 CitiZ & milk XN710610 red EF488 CitiZ & Co XN750510 grey Magimix, EUversion EF483 Citiz M190 Ref 11290 black EF483 Citiz M190 Ref 11291 cream EF485 Citiz M190 Milk Ref 11300 black EF487 Citiz M190 Duo Ref 11305 black 22 Citiz service manual ...
T E C H N I C A L D A T A Turmix, ATversion EF484 Citiz C110 fire engine red/ Turmix TX 170 Citiz EF484 Citiz C110 steel grey/Turmix TX 170 Citiz EF486 Citiz & milk C120 fire engine red/ EF488 Citiz & Co. C130 steel grey/ Turmix TX 270 Citiz & milk Turmix TX 370 Citiz & Co. 4.1.2 Rating plate details 1) Brand name 7) Serial number 2) Voltage and power rating 8) Machine type 3) Place of manufacture 9) Special disposal icon 4) National approval sign of Russia (do not dispose with ordinary waste) (GOST R) 10) Sign of conformity (CE) ...
T E C H N I C A L D A T A Decoding the alphanumeric serial number By decoding the date Example: of production and machine type, the coffee machine can be Checksum (if available) identified exactly. Color version Type of mains plug Mains voltage Distributing partner Incremental number per production day Manufacturing plant Manufacturer designation of the machine type (EF 484) 08312 ... Date of production (08 = year 2008, 312 = 312 day of the year) 4.1.3 Rating plate of milk frother (model Citiz & milk) Note he mains volt age ranges of the dif ferent models. 24 Citiz service manual ...
Mains voltage for Citiz els unless explicitly stated otherwise. Europe, RU, AU, CN, KR, SG, HK, ME, ZA, IL, BR, AR... 220240 V / 5060 Hz USA, Canada, BR, MX .............. 120127 V / 5060 Hz Japan .................... 100 V / 5060 Hz* Mains voltage for Citiz & milk Europe, RU, AU, CN, KR, SG, HK, ME, ZA, IL, BR, AR... 220240 V / 5060 Hz USA, Canada, BR, MX .............. 120127 V / 5060 Hz Mains voltage for Citiz & Co Europe, RU, AU, ME, IL............ 220240 V / 5060 Hz Approvals Approvals for Citiz ...... CE, UL "for USA and Canada", PSE, Gost R, Ctick, CCC, KTL, SPRING, SASO, SABS, ISI, IRAM, NOM Approvals for Citiz & milk .... CE, UL "for USA and Canada", Gost R, Ctick, CCC, KTL, SPRING, SASO, SABS, ISI, IRAM, NOM Approvals for Citiz & Co .......... CE, Gost R, Ctick, SASO, ISI Power ratings of coffee machine main components (for all voltages and frequencies) Thermoblock .....................1200 W* *model Citiz & Co, Australia: 1080 W Pump......................... 55/60 W Performance data of core unit Heating up Citiz ...................... approx. 7.6 Wh ...
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T E C H N I C A L D A T A 1 large cup (110 ml*) Citiz ...................... approx. 8.7 Wh Citiz & milk ................... approx. 8.7 Wh Citiz & Co (both heads) ..............approx. 14.8 Wh * Default setting Standby operation (in 1 hour) Citiz ...................... approx. 0.7 Wh Citiz & milk ................... approx. 0.7 Wh Citiz & Co ..................... approx. 2.2 Wh Pump Pump pressure Max. permissible ................17.5 bar ± 1.5 bar ...
T E C H N I C A L D A T A 4.2.2 Technical data of milk frother (model Citiz & milk) Mains voltage Europe .................. 220240 V / 5060 Hz USA/Canada ................ 120127 V / 5060 Hz If replacing a defect The milk frother milk frother, check is available in 2 different models, depending on above mains voltage ranges, mains voltage range. has to match the mains voltage range of the associated coffee machine. Power rating (depending on mains voltage) 220240 V, 5060 Hz ..................410490 W 110127 V, 5060 Hz ..................380505 W Standby operation .................... < 1 W Power consumption ...
T E C H N I C A L D A T A Performance data Whisk speed..................2’0002’700 rpm Preparation times (with full, semiskimmed or skimmed milk at 8 °10 °C fridge temperature) Hot milk froth (120 ml) ..................5080 sec Cold milk froth (120 ml) ...................6080 sec Hot milk (240 ml) ..................120180 sec Temperature Hot milk ..................... + 60 °C to + 70 °C Foam milk..................+ 60 °C to + 70 °C Various data Noise emission ..................max. 55 dB(A) 4.2.3 Dimensions and weight model Citiz The overall dimen sions are the same for both core unit ver sions (C and Drange). Dimensions in mm Dimensions (width x height x length).......... 130 x 277 x 372 mm Cup support down ......8590 mm, for espresso and lungo cups/glasses Cup support up ............150155 mm, for macchiato glasses Weight (without water)................approx. 3.4 kg 28 Citiz service manual ...
T E C H N I C A L D A T A 4.2.4 Dimensions and weight model Citiz & milk The overall dimen sions are the same for both core unit ver sions (C and Drange). Dimensions in mm Dimensions (width x height x length) .......... 237 x 277 x 372 mm Weight (without water, milk frother included) ...........approx. 4.6 kg 4.2.5 Dimensions and weight milk frother Dimensions of jug cpl. (diameter x height) .......... 91 x 170 mm Whisk for foam (diameter x height) ..............33 x 32 mm Mixer for hot milk.................. 15 x 34 x 32 mm Weight (with whisk and mixer) ................0.7 kg 29 Citiz service manual ...
T E C H N I C A L D A T A 4.2.6 Dimensions and weight model Citiz & Co The overall dimen sions are the same for both core unit ver sions (C and Drange). Dimensions in mm. Dimensions (width x height x length).......... 326 x 281 x 286 mm Weight (without water).................approx. 7 kg 30 Citiz service manual ...
O P E R A T I O N 5 O P E R A T I O N 5.1 General information For an overview of operational controls see “Main Components” on page 9. For basic operation of the machine such as preparing a coffee and other related infor mation, refer to the user manual. To simplify matters, the model Citiz with core unit Crange is used to exemplify throughout this chapter. 5.2 Status indication 5.2.1 Status indication of coffee machine The two coffee buttons with green LED backlight show the status of the coffee machine according to the following table: " Small cup" " Large cup" Machine status etc. ...
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(same as brewing big cup) Blinking 2 Hz, Descaling ready 0.25 s on, 0.25 s off Blinking 2 Hz, 0.25 s on, 0.25 s off Descaling pump on (descal) (same as descaling ready mode) Blinking 2 Hz, 0.25 s on, 0.25 s off Descaling pump off (descal) (same as descaling ready mode) Blinking 2 Hz, Emptying / Evaporating 0.25 s on, 0.25 s off Blinking 0.5 Hz, Standby 1 s on, 1 s off alternately Blinking 2 Hz, Resetting 0.25 s on, 0.25 s off indication for 3 s Blinking 0.2 Hz, Power save 2.5 s on, 2.5 s off alternately Blinking 1 Hz, Overheat 0.5 s on, 0.5 s off (same as heat up) Blinking 0.5 Hz, Power save activation 1 s on, 1 s off alternately 5 times 32 Citiz service manual ...
O P E R A T I O N " Small cup" " Large cup" Machine status etc. LED signal button button Blinking 0.5 Hz, Power save deactivation 1 s on, 1 s off (only for model Citiz & Co) alternately 3 times 5.2.2 Status indication of milk frother AERO3 The operating button with red/blue backlight shows the status of the milk frother according to the following table: Machine status etc. Operating button Light signal Off Backlight off On hot milk preparation Red backlight on On cold milk froth prepara Blue backlight on tion To reset a red blink Failure/malfunction ...
O P E R A T I O N 5.3 Machine modes 5.3.1 Machine modes of Citiz coffee machines This table helps to understand the operating modes of a Citiz coffee machine: Machine mode Enter mode Actions Exit mode Heats up thermoblock to ready temperature Every time after switch e.g. switching off 1 Heat up mode 90 °C within 60 s with ing on machine machine out overshooting target temperature Tests: • NTC short circuit • NTC connected Every time after switch • Thermoblock heating e.g. switching off 2 Self test mode ing on machine machine ...
The procedure for programming/resetting is the same for both coffee buttons. 5.4.1 Programming the fill up level Programmable volume range ................10750 ml Each new program ming cycle starts with the min. volume (10 ml after 3 sec), regard less of a preprogrammed coffee volume. 1) Prepare coffee as usual (see user 2) Only release the button when the manual), but keep the coffee button desired fill level is reached. pressed for at least 3 seconds in order to start programming mode. 5.4.2 Resetting the fill up level With the following procedure all programmed fill up levels will be set back to this factory settings: Coffee button "small cup" ..................40 ml Coffee button "large cup" ..................110 ml 1) Switch off the coffee machine. 2) Press and hold the "large cup" button. 3) Switch on the coffee machine. 4) Release "large cup" button. 36 Citiz service manual ...
O P E R A T I O N 5.5 Empty water system After every operation, some water remains in the coffee machine. Therefore 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 coffee machine. 2) Remove water tank. 3) Place a beaker under the coffee out let. Model Citiz & Co: Only one core unit should be emptied at the same time (danger of mains supply overload). After this procedure, the coffee machine will not be ready for approx. 10 min (until the thermoblock cools to below 100 °C ). 4) Press and hold button "small cup". The pump starts to drain the water ...
6 M A I N T E N A N C E 6.1 Daily maintenance and cleaning 6.1.1 Before first coffee or at the start of day The Citiz model is shown as example. Maintain and clean other models accordingly . 1) Fill water tank with fresh potable 4) Switch machine on. water. 2) Insert water tank. 3) For model Citiz & milk: Attach whisk to milk frother. Place milk frother on base plate connector. After a longer period of non use: 6) Rinse coffee machine by pressing but ton "large cup" about 6 times. 5) Place a container under coffee outlet. 38 Citiz service manual ...
6.1.2 After last coffee or at the end of day 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. Platform and drip tray surfaces are not abrasionproof. Never use brushes and/or cleaning agents that con tain aggressive or chemical components resp. sol vents. Do not put any part in a dishwasher. Use only a damp cloth or sponge and a mild cleaning agent if necessary 1) Switch machine off. 3) Empty and clean 2) Check if capsule is ejected. capsule container (a) waste water container with cup support (b) drip tray with drip grid (c). Do not use a brush the water tank can be scratched. 4) Empty, rinse and clean water tank. 5) Reassemble coffee machine. 6) Clean coffee machine with a damp cloth if necessary. 39 Citiz service manual ...
M A I N T E N A N C E 6.1.3 Milk frother of model Citiz & milk Risk of damage! The inside of the jug is coated for easy cleaning. Never use brushes and/or cleaning agents that contain abrasive or aggressive, chemical components resp. solvents. Do not put any part in a dishwasher. Use only a damp cloth and a mild cleaning agent if necessary. 1) Remove milk frother from platform. 2) Remove lid and dismantle whisk. Keep connectors dry (on platform and at underside of milk frother). 3) Remove seal from lid. 5) Clean outside of milk frother with a 4) Rinse and clean milk frother together damp cloth if necessary. with whisk or mixer, lid and seal. 6) Reassemble milk frother. 40 Citiz service manual ...
M A I N T E N A N C E 6.2 Descaling Nespresso Only use descaler or descaling kit never use vinegar! Descaler can damage casing and contact surfaces. Immediately clean drops of descaling solution. The descaling chart is based on a cup size of 40 ml. fH ... French grade dH ... German grade CaCO ... Calcium carbonate 3 Use this chart to inform a customer when to descale the coffee machine depending on local water hardness and average coffee consumption. Double the estimated time interval for model Citiz & Co. 6.2.1 Descaling procedure for models Citiz and Citiz & milk The Citiz model is shown as example. 1) Eject capsule or check if capsule is 2) Remove and empty capsule/waste removed. water container, drip tray and water tank. 41 Citiz service manual ...
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M A I N T E N A N C E Observe the safety instructions on the descaler package. 3) Reassemble coffee machine without 5) Fill the water tank with 0.1 l decalcifier Use a container with a capacity of 1 l min. water tank. (1 bag) and 0.5 l water. 4) Place a container on the cup support. 6) Insert water tank into the coffee machine. 7) Press both coffee buttons simulta 8) The machine is in descaling mode now neously for at least 3 sec. (both buttons blinking fast). 42 Citiz service manual ...
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M A I N T E N A N C E Danger! Hot splashes of descaling solution. Do not open handle dur ing descaling process. 9) Press any button to start pump. 10) After water tank is empty, pour descal Let the entire solution in the tank run ing solution back into water tank. through the system. 11) Place empty container back on cup 12) Descale again: press any button and support. wait until water tank is empty. 43 Citiz service manual ...
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M A I N T E N A N C E Danger of injury! Residual descaler may be harmful. Rinse thoroughly to remove any residue. 13) Empty container and put it back on 15) Rinse coffee machine by pressing any cup support. button and wait until water tank is 14) Rinse and clean water tank thoroughly empty. and fill it with fresh potable water. 16) Press both coffee buttons simultane 18) Switch off coffee machine. ously for at least 3 sec to end descal 19) Empty and clean capsule/waste water ing mode. container and drip tray. 17) Remove and empty container. 20) Clean coffee machine with a damp cloth if necessary. 44 Citiz service manual ...
M A I N T E N A N C E 6.2.2 Descaling procedure for model Citiz & Co 1) Eject capsules or check if capsules 2) Remove and empty capsule/waste are removed. water containers, drip tray and water tank. Observe the safety instructions on the descaler package. 3) Reassemble coffee machine without 5) Fill the water tank with 0.2 l decalcifier Use containers with a capacity of 1 l min. water tank. (2 bags) and 1.0 l water. 4) Place a container under each coffee 6) Insert water tank into the coffee outlet. machine.
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M A I N T E N A N C E 7) Press both coffee buttons simulta 9) The machine is in descaling mode now neously for at least 3 sec. on first core (both coffee buttons blinking fast on unit. core units). 8) Repeat procedure with second core unit. Danger of injury! Hot splashes of descaling solution. Do not open handles dur ing descaling process. 10) Press any button on a core unit to start 11) After water tank is empty, pour descal ing solution from both containers back pumps. Let the entire solution in the tank run into water tank. through the system. 46 Citiz service manual ...
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M A I N T E N A N C E 12) Place empty containers back on cup 13) Descale again: press any button on a supports. core unit and wait until water tank is empty. 14) Empty containers and put them back 16) Rinse coffee machine by pressing any on cup supports. button on first core unit. 15) Rinse and clean water tank thoroughly 17) Repeat procedure on second core and fill it with fresh potable water. unit and wait until water tank is empty. 47 Citiz service manual ...
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M A I N T E N A N C E 18) Press both coffee buttons simultane 21) Switch off coffee machine. ously for at least 3 sec to end descal 22) Empty and clean capsule/waste water ing mode. containers and drip tray. 19) Repeat procedure on second core unit 23) Clean coffee machine with a damp to end descaling mode. cloth if necessary. 20) Remove and empty containers. 48 Citiz service manual ...
YES continue with point f) coffee button) NO continue with point d) d) YES both coffee buttons YES continue are working NO replace electronic control 4.1 Coffee machine is board not working 4 Activate On/Off e) YES thermostat on pump is YES replace thermostat (does not function) switch to perform defective NO replace pump automatic self test f) YES fine wire fuse(s) YES replace electronic con (167 °C) on thermoblock defec trol board, if necessary replace tive thermoblock NO continue g) YES wiring is okay YES replace electronic con NO continue with point 4.3 trol board NO replace defective cables YES thermoblock is hot YES replace NTC tempera 4.2 Both coffee buttons NO self test ok continue ture sensor are blinking 3x fast NO replace thermoblock 49 Citiz service manual ...
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(see page 41) the standard range NO continue with point 9 NO replace pump 7 Descale coffee YES descale coffee machine 7.1 Coffee machine is machine (see page 41) calcified (if necessary) NO continue with point 9 YES descale and rinse coffee YES inform customer to des 8 Check water tank 8.1 Particles of calcium machine again to clean water cale coffee machine periodi contents after des and rust visible in circuit (see page 41) cally and to use specified des caling and rinising water NO continue caling product only. No errors found according to YES for more information 9 Final cleaning check list? please contact Nespresso (see page 38) Service Division End of check list 50 Citiz service manual ...
T R O U B L E S H O O T I N G 7.2 Check list for milk frother The milk frother is part Measure / Further measures / repair Check Error symptoms of the Citiz & milk repair work work model. 1.1 Lid/seal broken or YES replace lid/seal damaged NO continue 1 Check milk frother YES replace milk frother in 1.2 Inside coating of YES inform customer how to and accessory for agreement with customer jug badly scratched clean milk frother visible damage NO continue ...
R E P A I R S These repair instructions are based on exploded drawings with position numbers combined with repair and mounting tips, Nespresso presuppose basic knowledge in repairing coffee machines. As a rule, identical components (e.g. pumps, thermoblocks etc.) are presented in detail only once. 8.1 Safety instructions Risk of fatal electrical shock! Mains voltage inside the coffee machine. Disconnect the mains 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. 8.2 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 148 and "Parts List" on page 154. Snap connections Parts of the case and components of the coffee machine are connected screwless with latches. When loosening these latches, proceed with care and patience to avoid causing any damage. The side panels of the core unit have delicate snap connections that can brake easily. When removing these side panels, use the special disassembly tool and procceed according to the disassembly instructions. Screw connections Do not overtighten screws. Plastic threads and inserts are delicate. Observe max. torque for the screw connections according to the following table. 52 Citiz service manual ...
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R E P A I R S Screw / screw connection Torque Position 50 (+30/0) Ncm Screw with oval shaped head Bottom of platform 0.5 (+0.3/0) Nm TX 10 screw (4 x) / 50 (+30/0) Ncm brewing unit (TMBU) 0.5 (+0.3/0) Nm TX 10 screw / 150 (+30/0) Ncm thermoblock support (central) 1.5 (+0.3/0) Nm 80100 Ncm NTC fixation on thermoblock 0.81.0 Nm TX 20 screw (2 x) / 150 (+30/0) Ncm thermo fuse fixations on ther 1.5 (+0.3/0) Nm moblock 53 Citiz service manual ...
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Screw / screw connection Torque Position TX 20 screw / 150 (+30/0) Ncm ground connection (PE) on ther 1.5 (+0.3/0) Nm moblock Designation of spare parts The components in the following illustrations are indexed with position numbers. See separate spare parts list for corresponding spare part numbers. Distinguish between spare parts of the different models and core unit versions. Electrostatic discharge protection When installing a new electronic control board, the service technician must be earthed with a grounding band. Wiring arrangement Random changes in the wiring arrangement 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. Protective measures: • Do not change the course of internal wiring during repair. • Make sure that wires are distant from hot parts use existing cable ducts and clips. Residual water • If it is necessary to pull off hoses from components, hold ready a small beaker 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 37). 54 Citiz service manual ...
A dynamometric 1) Special screwdriver with short oval bit 6) TORX screwdriver (TX10, TX15) screwdriver with suit (EFR no. 0004872) 7) Screwdriver with approx. 4 mm tool tip able bits is recom 2) Short oval bit only 8) Hexagonal wrench SW 4 mended. (EFR no. 0004878) 9) Flat wrench SW 14, 10 mm AF 3) Disassembly tool (for side panels etc.) 10) Torque wrench (EFR no. 0060611) 11) Longnosed pliers 4) Repairing/service holder device for 12) Flat pliers models Citiz and Citiz & milk (availa 13) Beaker and towel to catch and wipe ble from Nespresso ) away leaking water 5) Repairing/service holder device for Nes model Citiz & Co (available from presso ) 55 Citiz service manual ...
R E P A I R S 8.4 Platform disassembly model Citiz 8.4.1 General disassembly This general disassembly is necessary before the removal/disassembly of a core unit is possible, gives access to the components and wiring of the platform. • Take away all removable parts from platform and core unit cup support (8) with waste water container (6) capsule container (7) drip tray (46) with drip grid (49) water tank (44) with cover (45). 56 Citiz service manual ...
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R E P A I R S • Loosen 2 screws (41, oval shaped head) at the bottom side of platform. • Use screwdriver to release latches. Start by inserting the srewdriver in the opening for the power cord. The bottom cover (51) is inserted into the platform with both edges of its small end. Only remove bottom cover by swinging up the round end. • Remove bottom cover (51) by swinging it up like shown. 57 Citiz service manual ...
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R E P A I R S Assembly checkpoints • Check if 2 rubber stoppers are mounted on waste water container (6). Take care not to jam any wires at the screw connections. • Insert bottom cover (51) with small end into platform at first. Then fold it down and close latches. 58 Citiz service manual ...
R E P A I R S 8.4.2 Replacing water tank connector The water tank con nector (53) is replaced together with gasket, clamping ring and metal sieve. • Pull off both hoses from water tank connector (53). • Release the 3 latches around the water tank connector one after the other by pressing the top of their hooks outwards with a screwdriver (see detail) and lifting the water tank connector at the same time. • Remove gasket (a) from water tank connector (53). • With the help of a pair of tweezers, remove clamping ring (b) and metal sieve (c). • Clean or replace parts. 59 Citiz service manual ...
R E P A I R S Assembly checkpoints • Check that gasket is inserted in water tank connector (53) correctly. • During assembly of the water tank connector on the platform, each of its 3 latches has to engage with an audible click. • Mind the different diameters of hoses for the water tank connector. 8.4.3 Replacing mains switch The hoses can • Remove water tank connector from platform first (see page 59). remain on the water tank connector. Use a pair of flat pli • Remove both insulated faston receptacles from mains switch (54). ers to pull off insulat ing sleeve with recep tacle. • Press blade of screwdriver between holder of mains switch and platform carefully. Lift holder with screwdriver slightly. Then press holder with mains switch (54) inwards until it can be removed. 60 Citiz service manual ...
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R E P A I R S Assembly checkpoints • Use marked cable guide to lay wires. • The mains switch holder (54) has a notch: correct fitting position is with mains switch connections next to the platform (see detail). • During assembly of the water tank connector (53) on the platform, each of its 3 latches has to engage with an audible click. 61 Citiz service manual ...
R E P A I R S 8.4.4 Replacing power cord The hoses can • Remove water tank connector from platform first (see page 59). remain on the water tank connector. Use a pair of flat pli • Remove insulated faston receptacle of phase wire from mains switch (54). ers to pull off insulat • Disconnect adapter plug of neutral wire (15). ing sleeve with recep tacle. The flat receptacle on • If present, disconnect ground wire (15, see detail). the ground wire has a special connector latching (see detail). Press down lever at first, then pull off receptacle. The cable bracket is • Unlatch cable bracket (56) with screwdriver. under tension. There fore, hold the cable bracket with your finger when unlatching it. 62 Citiz service manual ...
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R E P A I R S Assembly checkpoints Wiring with threecore power cord: Wiring with twocore power cord: • Use marked cable guides to lay wires. • Check wiring (see "Wiring diagrams model Citiz" on page 118 and following). • During assembly of the water tank connector (53) on the platform, each of its 3 latches has to engage with an audible click. 63 Citiz service manual ...
R E P A I R S 8.4.5 Removing core unit Pay attention to the following safety advice before removing the core unit. Danger of insulation damages (cuts) on wires between core unit and platform (phase and neutral wire, ground wire if existing). The sharp casing edges of the platform (marked red in above illustra tion) can damage the insulation of wires. Do not stretch and reciprocate wires over sharp edges while removing the core unit. 64 Citiz service manual ...
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R E P A I R S After this repair step • Loosen 4 screws (41, oval shaped head) at the bottom side of platform. the core unit can be pulled out of the plat form slightly (with still con nected hoses and wires). Now the covers of the core unit can be removed. For complete removal of the core unit proceed as follows: The hoses can • Remove water tank connector (53) from platform (see page 59). remain on the water tank connector. Use a pair of flat pliers • Remove insulated faston receptacle of phase wire (15) from mains switch (54). to pull off insulating • Disconnect adapter plug (15) of neutral wire. sleeve with recepta cle. The flat receptacle on • If present, disconnect ground wire (15, part of thermoblock assembly). the ground wire has a special connector latching (see detail). Press down lever at first, then pull off receptacle. 65 Citiz service manual ...
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R E P A I R S Assembly checkpoints • All covers are assembled on the core unit. • Check that wiring between core unit and platform is led through cable fixation (71). • Use marked cable guides to lay wires in platform (refer to "Replacing power cord" on page 62 and following). • Check wiring (see "Wiring diagrams model Citiz" on page 118 and following). • During assembly of the water tank connector (53) on the platform, each of its 3 latches has to engage with an audible click. 66 Citiz service manual ...
R E P A I R S 8.5 Platform disassembly model Citiz & milk 8.5.1 General disassembly This general disassembly is necessary before the removal/disassembly of a core unit is possible, gives access to the components and wiring of the platform. • Take away all removable parts from platform and core unit cup support (8) with waste water container (6) capsule container (7) drip tray (48) with drip grid (49) water tank (44) with cover (45) milk frother (59) with lid and seal (62) cup storage (58) whisk for hot milk (60) spring whisk for milk foam (61). 67 Citiz service manual ...
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R E P A I R S • At the bottom side of platform loosen 4 screws (41, oval shaped head). 68 Citiz service manual ...
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R E P A I R S Latches on the bot tom cover (51) are red circled for easy identification. • Insert screwdriver into recesses and swivel screwdriver to remove bottom cover (51). 69 Citiz service manual ...
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R E P A I R S Assembly checkpoints • Check if 2 rubber stoppers are mounted on waste water container (6). Risk of damage! While assembling the protective cover at the platform, take care not to jam any wires at the screw connections. 70 Citiz service manual ...
R E P A I R S 8.5.2 Replacing water tank connector The water tank con nector (53) is replaced together with gasket, clamping ring and metal sieve. • Pull off both hoses from water tank connector (53). • Release the 3 latches around the water tank connector one after the other by pressing the top of their hooks outwards with a screwdriver (see detail) and lifting the water tank connector at the same time. 71 Citiz service manual ...
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R E P A I R S 1. Remove gasket (a) from water tank connector (53). 2. With the help of a pair of tweezers, remove clamping ring (b) and metal sieve (c). 3. Clean or replace parts. Assembly checkpoints • Check that gasket is inserted in water tank connector (53) correctly. • During assembly of the water tank connector on the platform, each of its 3 latches has to engage with an audible click. • Mind the different diameters of hoses for the water tank connector. 72 Citiz service manual ...
R E P A I R S 8.5.3 Replacing milk frother connector • Remove 3 small faston receptacles from milk frother connector (57). • Remove milk frother connector (57) by releasing 2 latches and swivel connector out from under the hook. Assembly checkpoints • Use marked cable guides to lay wires. • Check wiring of milk frother connector (57), see detail. 73 Citiz service manual ...
R E P A I R S 8.5.4 Replacing mains switch Use a pair of flat pli • Remove 4 insulated faston receptacles from mains switch (54). ers to pull off insulat • Press blade of screwdriver between holder of mains switch and platform carefully. ing sleeves with Lift holder with screwdriver slightly. Then press holder with mains switch (54) receptacles. inwards till it can be removed. Assembly checkpoints • The mains switch holder (54) has a notch (see detail) to ensure a correct fitting posi tion. • Use marked cable guides to lay wires. • Check wiring of mains switch (see "Wiring diagrams model Citiz & milk, EF 485/ 486" on page 124 and following). 74 Citiz service manual ...
R E P A I R S 8.5.5 Replacing power cord Use a pair of flat pli • Remove 2 insulated faston receptacles (55) from mains switch (54). ers to pull off insulat ing sleeve with recep tacle. The counterpart, a • If present, disconnect ground wire (15, part of thermoblock assembly). flat receptacle, has a special connector latching (see detail). Press down lever at first, then pull off receptacle. The cable bracket is • Unlatch cable bracket (56) with screwdriver. under tension. There fore, hold the cable bracket with your finger when unlatching it. 75 Citiz service manual ...
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R E P A I R S Assembly checkpoints • Use marked cable guides to lay wires. • Check wiring of power cord (see "Wiring diagrams model Citiz & milk, EF 485/486" on page 124 and following). 76 Citiz service manual ...
R E P A I R S 8.5.6 Removing core unit Pay attention to the following safety advice before removing the core unit. Danger of insulation damages (cuts) on wires between core unit and platform (phase and neutral wire, ground wire if existing). The sharp casing edges of the platform (marked red in above illustra tion) can damage the insulation of wires. Do not stretch and reciprocate wires over sharp edges while removing the core unit. 77 Citiz service manual ...
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R E P A I R S After this repair step • Loosen 4 screws (41, oval shaped head) at the bottom side of platform. the core unit can be pulled out of the plat form slightly (with still con nected hoses and wires). Now the covers of the core unit can be removed. For complete removal of the core unit proceed as follows: • Remove bottom cover (refer to page 56). Use a pair of flat pli • Remove both insulated faston receptacles (15, part of thermoblock assembly) from ers to pull off insulat mains switch (54). ing sleeve with recep tacle. 78 Citiz service manual ...
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R E P A I R S The flat receptacle on • If present, disconnect ground wire (15, part of thermoblock assembly). the ground wire has a • If the thermoblock or core unit has to be replaced, disconnect milk frother connector special connector (57). Otherwise the core unit can be removed together with this connector (see page latching (see detail). Press 73). down lever at first, then pull off receptacle. • Remove water tank connector (53, see page 71). Assembly checkpoints • All covers are assembled on the core unit. • Check that wiring between core unit and platform is led through cable fixation (71). • Use marked cable guides to lay wires. • Check wiring of milk frother connector (57), see detail. • Check wiring of mains switch (54), see "Wiring diagrams model Citiz & milk, EF 485/486" on page 124 and following. • During assembly of the water tank connector (53) on the platform, each of its 3 latches has to engage with an audible click. 79 Citiz service manual ...
R E P A I R S 8.6 Platform disassembly model Citiz & Co 8.6.1 General disassembly This general disassembly is necessary before the removal/disassembly of one or both core units is possible, gives access to the components and wiring of the platform. • Take away all removable parts from platform and core units cup supports (8) with waste water containers (6) capsule containers (7) drip tray (48) with drip grid (49) water tank (44) with cover (45). 80 Citiz service manual ...
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R E P A I R S The core units are • At the bottom side of platform loosen 9 screws (41, oval shaped head). fastened with some of these screws as well. Support both core units so that their remaining screw connection to the platform cannot be damaged. 81 Citiz service manual ...
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R E P A I R S • If necessary use a screwdriver to remove protective cover (51). 82 Citiz service manual ...
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R E P A I R S Assembly checkpoints • Check if 2 rubber stoppers are mounted on each waste water container (6). Risk of damage! While assembling the protective cover at the platform, take care not to jam any wires at the screw connections. 83 Citiz service manual ...
R E P A I R S 8.6.2 Replacing water tank connector The water tank con nector (53) is replaced together with gasket, clamping ring and metal sieve. • Pull off both hoses (63, 64) from water tank connector (53). • Release the 3 latches one after the other by pressing the top of their hooks outwards with a screwdriver (see detail) and lifting the water tank connector at the same time. • Remove gasket (a) from water tank connector (53). • With the help of a pair of tweezers, remove clamping ring (b) and metal sieve (c). • Clean or replace parts. 84 Citiz service manual ...
R E P A I R S Assembly checkpoints • During assembly of the water tank connector (53) on the platform, each of its 3 latches has to engage with an audible click. • Insert gasket correctly (see detail). 8.6.3 Replacing mains switch Use a pair of flat pli • Remove 2 insulated faston receptacles from mains switch (54). ers to pull off insulat • Press blade of screwdriver between holder of mains switch and platform carefully. ing sleeves with Lift holder with screwdriver slightly. Then press holder with mains switch (54) receptacles. inwards till it can be removed. 85 Citiz service manual ...
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R E P A I R S Assembly checkpoints • Use marked cable guides to lay wires. • The mains switch holder (54) has a notch: correct fitting position is with mains switch connections next to the platform (see detail). 86 Citiz service manual ...
R E P A I R S 8.6.4 Replacing power cord Use a pair of flat pli • Remove insulated faston receptacle of phase wire (55) from mains switch (54). ers to pull off insulat • Disconnect both insulated adapter plugs of neutral wire (55). ing sleeve with recep tacle. The flat receptacles • If a ground wire is present, disconnect both flat receptacles (15). of the ground wire connections (15) have a special connector latching (see detail). Press down lever at first, then pull off receptacle. The cable bracket is • Unlatch cable bracket (56) with screwdriver. under tension. There fore, hold the cable bracket with your finger when unlatching it. 87 Citiz service manual ...
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R E P A I R S Assembly checkpoints • Use marked cable guides to lay wires. • Check wiring of power cord (see "Wiring diagrams model Citiz & Co, EF 487/488" on page 128 and following). 88 Citiz service manual ...
R E P A I R S 8.6.5 Removing core units Both core units can be removed the same way. After the first repair step the core unit can be pulled out of the platform slightly (with still connected hoses and wires). Now the covers of • For each core unit loosen 1 remaining screw (41, oval shaped head) at the bottom the core unit can be removed. side of platform. For complete removal of a core unit proceed as follows: 4. Disconnect 2 insulated adapter plugs (15, phase and neutral wire). The flat receptacle on 5. If a ground wire (15, part of thermoblock) is present, disconnect flat receptacle. the ground wire has a 6. Open protective case (69) with screwdriver and disconnect connection cable (b). special connector 7. Pull out core unit from platform slightly to disconnect synchronization cable plug (a) latching (see detail). Press from electronic control board. down lever at first, then pull 8. Pull off both hoses from angled Hconnector (65). off receptacle. 9. Lift core unit out of platform. 89 Citiz service manual ...
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R E P A I R S Assembly checkpoints • All covers are assembled on the core unit. • Use marked cable guides to lay wires. • Check wiring (see "Wiring diagrams model Citiz & Co, EF 487/488" on page 128 and following). • Make sure to reconnect synchronization cable plugs (a) on electronic control boards. • Mind the hose positions on angled Hconnector (65). • Check that wiring between core units and platform is led through cable fixations (71). 90 Citiz service manual ...
R E P A I R S 8.7 Disassembly of core unit, Crange 8.7.1 General disassembly After general disas The core unit has to be removed from the platform at first (see according chapter "plat sembly of the core form disassembly"). It is possible to perform a general disassembly of the core unit with unit a repairing / intact hose and wire connections to the platform (e.g. for repair, leakage check). service holder device is helpful for further repair work. Remove left side panel 1. Insert disassembly tool between bottom of left side panel (3) and chassis (1). 2. Swivel disassembly tool till latch opens at the bottom. 3. Insert disassembly tool into lower gap at the front. 4. Carefully turn disassembly tool slightly to the right to open the latch. 91 Citiz service manual ...
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R E P A I R S 5. Insert disassembly tool laterally into the gap above. 6. Carefully turn disassembly tool slightly forward to open the next latch. 7. Move disassembly tool upwards and open remaining latch the same way. Insert disassembly 8. At the back insert disassembly tool into shadow gap of left side panel. tool at right angles 9. Swivel disassembly tool carefully to open first latch. only. Otherwise the 10. Move disassembly tool upwards and open the other two latches the same way. shadow gap can be dam aged. 92 Citiz service manual ...
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R E P A I R S 11. Swing up and remove left side panel. Remove right side panel Remove the right side panel (4) in the same sequence as for the left side panel (3). Remove blind 1. Open 2 latches on each side of blind (9) with screwdriver. 2. Remove blind together with coffee buttons and wiring. 93 Citiz service manual ...
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R E P A I R S Remove cover 1. Use a screwdriver to release 2 latches on each side. 2. Lift and remove cover (2). Remove front cover with outlet 1. Release 3 latches on front cover by hand and press out outlet (5, see detail). 94 Citiz service manual ...
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R E P A I R S Assembly checkpoints • For easy identification, the side panels are marked with "RIGHT" or "LEFT" on the inside. • Check if damper (10) for closing handle is installed on cover (2). • Check that all connection wires to the platform are led through cable fixation (71). 95 Citiz service manual ...
R E P A I R S 8.7.2 Replacing compact brewing unit Open closing handle • Use a pair of pointed pliers to remove connector clip (34) and hose (29) with Oring to get access to hose (36). connection. • Use Torx screwdriver TX10 to loosen 4 screws (40). • After removal of compact brewing unit (14), release 2 latches with screwdriver and remove steam cover (13). 96 Citiz service manual ...
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R E P A I R S Assembly checkpoints • At first assemble steam cover (13) on new compact brewing unit (14) as shown. • Replace Oring (36) of hose connection on compact brewing unit. 97 Citiz service manual ...
R E P A I R S 8.7.3 Replacing pump General The pump (18) can only be replaced as assembly consisting of pump, prewired with thermostat (19, see below) or thermal cut off fuse (a) 2 pump supports (21, 22) pump cover (25). The pump is equipped either with a thermal cut off fuse or a thermostat depending on the voltage range or manufacturer. a) Thermal cut off fuse 19) Thermostat with retaining clip A blown thermal cut off fuse (a) has to be replaced together with the pump assembly. A tripped thermostat (19) resets after about 30 min automatically. 98 Citiz service manual ...
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R E P A I R S Replacing pump assembly • Remove both hoses (28, 32) from pump. Use a pair of pointed pliers to remove connector clip (35) with Oring (36). • Remove cover (43) from electronic control board and disconnect 2 faston recepta cles of pump wires. • Pull out supports (21, 22) together with complete pump assembly. 99 Citiz service manual ...
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R E P A I R S Assembly checkpoints The white plastic Iid • Adjust position of pump connector (23) towards hose (28) if necessary. on the pump is rotata • Check condition of supports (21, 22). Replace brittle supports. ble and has a square seat for the fork wrench. • Pass hose (28) from pump to self priming device through lug on pump cover (25). • Use a cable clamp (a) to fix pump wires (different location depending on thermo fuse/thermostat). 100 Citiz service manual ...
R E P A I R S 8.7.4 Replacing flow meter Assembly checkpoint • Lay connection cable to flow meter (27) in bracket. • Mind the hose positions on the flow meter. 101 Citiz service manual ...
R E P A I R S 8.7.5 Replacing automatic priming device (APD) • Use a pair of pointed pliers to remove connector clips (34, 35) from automatic priming device (26). 102 Citiz service manual ...
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R E P A I R S Assembly checkpoints • Replace both Orings (36) together with automatic priming device (26). • Insert hose (28) in tube guiding (30). 103 Citiz service manual ...
R E P A I R S 8.7.6 Replacing thermoblock with NTC sensor and fine wire fuse(s) Depending on A defect thermoblock can only be replaced with an assembly consisting of national regulations, thermoblock, prewired with NTC temperature sensor, fine wire fuse(s) and ground one or two fine wire wire (only if required), fuses are mounted on the thermoblock (see “Wiring thermoblock support. diagrams” on page 118 and following). • Use Torx screwdriver TX10 to loosen screw (40). Do not stress NTC • Release 3 latches and pull out support with thermoblock assembly (15). cable when remov ing support. 104 Citiz service manual ...
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R E P A I R S Replacing NTC temperature sensor • Unplug NTC sensor cable from electric control board (42) first. • Test NTC temperature sensor (39), see “NTC temperature sensor functionality” on page 139. Assembly checkpoint NTC temperature sensor • Tighten the new NTC temperature sensor (39) and spring ring with a torque wrench (80 100 Ncm). Replacing fine wire fuse(s) 105 Citiz service manual ...
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R E P A I R S Assembly checkpoints fine wire fuse(s) • When mounting a safety clip (a) on the thermoblock (15), make sure that the housing of the fine wire fuse (b) is positioned exactly below the safety clip. • Tighten fastening screw and spring ring with a torque wrench (150 (+30/0) Ncm). Assembly checkpoints thermoblock • All wires from thermoblock to platform must be led through the bracket (a) at the bottom of the support. • The black grommets (b) on the electrical thermoblock connections are slitted at the end. If an angled Faston receptacle (c) is used, make sure that its wire runs through this slit. • Tighten central fastening screw (d) with a torque wrench (150 (+30/0) Ncm). 106 Citiz service manual ...
R E P A I R S 8.7.7 Replacing electronic control board with button prints The replacement board is equipped with protective hous ing and cover. • Remove at first NTC connector from electronic control board, connector cable from flow meter, electronic lid (43), faston receptacles from electronic control board. • Insert tip of screwdriver between chassis (1) and protective case of electronic control board (42) to release latches. Then pull out assembly. 107 Citiz service manual ...
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R E P A I R S Replacing button prints / coffee buttons Assembly checkpoints For installing and • After assembly check the plug arrangement of the electronic control board (see connecting a new “Wiring diagrams” on page 118 and following. electronic control • Lay connection wires to button prints in brackets and cable guide like shown. board, the service techni cian must be earthed with a grounding band. 108 Citiz service manual ...
R E P A I R S 8.8 Disassembly of core unit, Drange 8.8.1 General disassembly After general disas The core unit has to be removed from the platform at first (see according chapter "plat sembly of the core form disassembly"). It is possible to perform a general disassembly of the core unit with unit a repairing/serv intact hose and wire connections to the platform (for repair, leakage check etc.). ice holder device is helpful for further repair work. Remove outlet The disassembly tool 1. Open closing handle. is necessary for 2. Press outlet (5) sidewards by hand carefully. removing outlet and 3. Insert disassembly tool into gap between outlet and right side panel (4). side panels undamaged. 109 Citiz service manual ...
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R E P A I R S 4. Hold and pull outlet. 5. At the same time move disassembly tool upwards. 6. Carefully turn disassembly tool slightly backward to open the latch. 7. Insert disassembly tool into gap on the other side of the outlet. 8. Move disassembly tool upwards and carefully turn it slightly backward to open the latch. 9. Remove outlet. Remove right side panel 10. Insert disassembly tool between bottom of right side panel (4) and chassis. 11. Swivel disassembly tool till snap connection at the front opens. 12. Relocate disassembly tool and repeat procedure to open latch at the bottom of the side panel. 110 Citiz service manual ...
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R E P A I R S 13. Insert disassembly tool laterally into gap at the front. 14. Carefully turn disassembly tool slightly forward to open the first latch. 15. Move disassembly tool upwards and open the other two latches the same way. Insert disassembly 16. At the back insert disassembly tool into shadow gap of right side panel. tool at right angles 17. Swivel disassembly tool carefully to open first latch. only. Otherwise the 18. Move disassembly tool upwards and repeat procedure for the other 2 latches. shadow gap can be dam aged. 111 Citiz service manual ...
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R E P A I R S Closing handle must 19. Swing up and remove right side panel. be opened. Remove left side panel 20. Insert disassembly tool between bottom of left side panel (3) and chassis. 21. Swivel disassembly tool till latch at the front opens. 22. Relocate disassembly tool and repeat procedure to open latch at the bottom of the side panel. 112 Citiz service manual ...
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R E P A I R S 23. Insert disassembly tool laterally into gap at the front. 24. Carefully turn disassembly tool slightly forward to open the first latch. 25. Move disassembly tool upwards and open the other two latches the same way. Insert disassembly 26. At the back insert disassembly tool into shadow gap of left side panel. tool at right angles 27. Swivel disassembly tool carefully to open first latch. only. Otherwise the 28. Move disassembly tool upwards and repeat procedure for the other 2 latches. shadow gap can be dam aged. 113 Citiz service manual ...
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R E P A I R S Closing handle 29. Swing up and remove left side panel. should be opened. Remove cover (2) 1. Remove both coffee buttons (11, 12) and prints (42) out of holder. 2. Remove wiring of coffee button prints from cable guides. 114 Citiz service manual ...
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R E P A I R S 3. Use a screwdriver to release 4 latches. 4. Open closing handle. 5. Lift and remove cover (2). Assembly checkpoints • Check if damper (10) for closing handle is installed on cover (2). • For correct layout of the wires to the coffee button prints, see “Replacing electronic control board with button prints” on page 116. • Assemble left side panel (3) first. • Insert right side panel (4) into hinges at the top of the left side panel. Then fold down right side panel and click latches. • Check that all latches are engaged. 115 Citiz service manual ...
R E P A I R S 8.8.2 Replacing electronic control board with button prints • Refer to page 114 for removing cover (2). The replacement board (42) is equipped with protec tive housing and cover. 116 Citiz service manual ...
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R E P A I R S • Remove first NTC connector from electronic control board, connector cable from flow meter, electronic lid (43), faston receptacles from electronic control board. • Insert tip of screwdriver between chassis (1) and protective case of electronic control board (42) to release latches. Then pull out assembly. Assembly checkpoints For installing and • The left and right button prints (42) are marked with "L" or "R" for easy identification. connecting a new • After assembly check the plug arrangement of the mainboard (see “Wiring electronic control diagrams” on page 118 and following). board, the service techni cian must be earthed with • Lay connection wires to button prints in brackets and cable guides like shown. a grounding band. 117 Citiz service manual ...
R E P A I R S 8.9 Wiring diagrams 8.9.1 Wiring diagrams model Citiz Wiring diagram 220 V 240 V IEC model Citiz, EF 483/484 118 Citiz service manual ...
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R E P A I R S Wiring diagram 120 V UL (USA/Canada) model Citiz, EF 483/484 119 Citiz service manual ...
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R E P A I R S Wiring diagram 120 V 127 V IEC (Brazil) model Citiz, EF 483/484 120 Citiz service manual ...
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R E P A I R S Wiring diagram 120 V 127 V IEC (Mexico) model Citiz, EF 483/484 121 Citiz service manual ...
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R E P A I R S Wiring diagram 110 V IEC (Taiwan) model Citiz, EF 483/484 122 Citiz service manual ...
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R E P A I R S Wiring diagram 100 V IEC (Japan) model Citiz, EF 483/484 123 Citiz service manual ...
R E P A I R S 8.9.2 Wiring diagrams model Citiz & milk, EF 485/486 Wiring diagram 220 V 240 V IEC model Citiz & milk, EF 485/486 124 Citiz service manual ...
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R E P A I R S Wiring diagram 120 V UL (USA/Canada) model Citiz & milk, EF 485/ 125 Citiz service manual ...
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R E P A I R S Wiring diagram 120 V 127 V IEC (Brazil) model Citiz & milk, EF 485/ 126 Citiz service manual ...
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R E P A I R S Wiring diagram 120 V 127 V IEC (Mexico) model Citiz & milk, EF 485/486 127 Citiz service manual ...
R E P A I R S 8.9.3 Wiring diagrams model Citiz & Co, EF 487/488 Wiring diagram 220 V 240 V IEC core unit, model Citiz & Co, EF 487/488 128 Citiz service manual ...
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R E P A I R S Wiring diagram 220 V 240 V IEC model Citiz & Co, EF 487/488 129 Citiz service manual ...
Some function tests are performed with an energized, partly opened coffee machine. out this chapter. Danger of electrocution! Mains voltage inside the coffee machine. Do not touch any live part while performing tests. 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. 9.2 Required equipment 9.2.1 Overview Symbolic illustration of function test equip ment. 1) Pressure gauge 4) Electronic thermometer (EFR no. 16195) (or digital multimeter suitable for temper 2) Citiz pressure gauge adapter ature measurement) 3) Digital multimeter 5) Timer (for NTC temperature sensor test) 6) Measuring beaker 7) Test equipment for protective earth con tinuity test and protective insulation test 130 Citiz service manual ...
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F U N C T I O N T E S T S 9.2.2 Citiz pressure gauge adapter 1) Quick action coupling for pressure 3) Connecting unit hose 4) Fixation unit 2) Operating lever This pressure gauge adapter is designed for the Citiz coffee machines. The pressure gauge adapter has 2 parts: • A connecting unit (3) with a sealing cone that is inserted in the capsule cage of the brewing unit. • A hand actuated fixation unit (4) to lock and seal the complete pressure gauge adapter in the brewing unit. 131 Citiz service manual ...
F U N C T I O N T E S T S 9.3 Measure flow rate 1) Fill and insert water tank. 2) Open closing handle. The pressure adapter must sit firmly in the capsule bay. 3) Insert connecting unit of pressure adapter into capsule bay. Push back sealing cone into capsule cage. 4) Insert fixation unit of pressure adapter into capsule bay. 5) Press down operating lever. 6) Connect pressure hose to pressure tester. 7) Place a measuring cup under the drain hose of the pressure tester. 132 Citiz service manual ...
12) Carry out measurement for approx. 30 sec. 13) Control measuring cup: at least 60 120 ml of water must be in the measur ing cup. 14) Open the valve and let water flow out of the pressure tester. Notices: • Should < 60 ml leak out, then the pump • Large deviations in indicated pressure is defective or there is a leak in the while measuring (± 4 bar) means that water system. the pump is defective. 9.4 Pressure and leakage checks Check the following parts of the coffee machine for leakages: • Compact brewing unit • Hose connections • Thermoblock • Pump • Self priming device 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/pressurized parts while checking for leakages! Always wear protective goggles. 133 Citiz service manual ...
F U N C T I O N T E S T S 9.4.1 Preparations Depending on core unit range, refer to "Disassembly of core unit, Crange" on page 91 or "Disassembly of core unit, Drange" on page 109. 1) Remove left side panel of core unit. 2) Insert core unit back into platform. 3) Fill and insert water tank. The pressure adapter must sit firmly in the capsule bay. 4) Insert connecting unit of pressure adapter into capsule bay. Push back sealing cone into capsule cage. 5) Insert fixation unit of pressure adapter into capsule bay. 6) Press down operating lever. 7) Connect pressure hose to pressure tester. 8) Place a measuring cup under the drain hose of the pressure tester. 134 Citiz service manual ...
F U N C T I O N T E S T S 9) Connect mains cable. 10) Switch on coffee machine. 9.4.2 Test run 11) After heating up, press the "small cup" button. 12) Open the valve and let the water flow for approximately 10 sec out of the drain hose. 13) Close the valve completely. The pres sure stabilizes after increasing briefly between 1619 bar (pressure check). The pressure increases slowly with increasing temperature. Should the pressure exceed 23 bar, switch off the coffee machine and release the pressure by opening the valve. For better visibility use a flashlight. 14) Check all connections under pressure for audible and visible leaks. Do not run the pump for more than 50 sec with the valve closed. 135 Citiz service manual ...
F U N C T I O N T E S T S 15) Switch off the coffee machine. 16) Open the valve and let water flow out of the pressure tester. 9.5 Measure coffee temperature 1) Switch on coffee machine. 2) Place a measuring cup on cup sup port. 136 Citiz service manual ...
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F U N C T I O N T E S T S 3) After heating up, press the "small cup" button for approximately 10 sec to pre heat the coffee outlet with hot water. 4) Empty measuring cup and place it back on cup support. 5) Insert capsule (Cosi is best suited). 6) Press the "small cup" button again. 7) Wait until the measuring cup contains 20 ml of coffee. 8) Then measure the coffee temperature approx. 510 mm under the coffee out let. The coffee temperature should be 86 °C ± 3 °C (187 °F ± 5.4 °F). 137 Citiz service manual ...
+ 10 °C) for the following tests only. affect the measuring results. 9.6.1 Measure hot milk temperature Spattered milk may cause burns. Only use milk frother with lid. • Prepare 240 ml hot milk in milk frother (use mixer without spring). • Measure temperature immediately after preparation in jug. The milk temperature should be between + 60 °C and + 70 °C (140 °F till 158 °F). 9.6.2 Measure milk froth ratio • Prepare cold milk froth out of 120 ml milk in milk frother (use whisk with spring). • Empty content of milk frother into measuring beaker. • Determine the ratio x [%] of milk froth to liquid milk with following formula: H x ´ 1 Approximate values: direct after preparation ..................x = 250 60 sec after preparation ..................x = 190 138 Citiz service manual ...
F U N C T I O N T E S T S 9.7 NTC temperature sensor functionality The resistance of the NTC temperature sensor must be within a defined range, other wise the temperature regulation will not work properly and the coffee machine will stay/ go into failure mode. An easy way to check the functionality of the NTC temperature sensor is to measure the ohmic resistance at ambient temperature. With this measurement, most defect NTC temperature sensors can be detected. Avoid contamination of sensor contact sur face during handling. 1) Unplug NTC temperature sensor from electronic control board. 2) Remove NTC temperature sensor from thermoblock (refer to page 104 and following). 3) Measure temperature of sensor body (do not touch either temperature or NTC sensor by hand). 4) Measure resistance of NTC tempera ture sensor by connecting a multime ter at the plug. 5) Compare measuring values with fol lowing diagram or table. 139 Citiz service manual ...
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F U N C T I O N T E S T S NTC Diagram NTC temperature sensor, R/T characteristics Graph 1 ..................max. resistance value Graph 2 ..................min. resistance value Measurement table NTC temperature NTC temperature NTC min. resistance NTC max. resistance [°C] [°F] [kOhm] [kOhm] 15 59 155.63 168.48 20 68 122.41 131.23 25 77 97.00 103.00 30 86 76.63 82.12 35 95 60.90 65.86 140 Citiz service manual ...
F U N C T I O N T E S T S 9.8 Protective earth (PE) continuity test 9.8.1 What coffee machine has to be tested and when? This test is only necessary for class 1 equipment (threewire power cord with protective earth) for models Citiz & milk, EF 485/486 after a repair whenever a general disassembly of the platform and/or core unit was performed. 9.8.2 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 respective tests according to EN/IEC 603351 “Safety of household and similar electrical appliances” and national regulations (e.g. DIN VDE 0701). Description Protective earth continuity measurements are made between the protective earth terminal and conductive, touchable parts of the coffee machine where dangerous voltage could occur if the basic insulation was to fail. ...
9.8.3 Test sequence This test sequence is Danger of electrocution! not applicable for cof Do not plug in the coffee machine during the protective earth continuity fee machines with test. twowire power cords (with Read and observe safety instructions in user manual of test equipment. out ground pin). 1) Connect black measuring cable to ground pin of power plug with an alli gator clip (example shown: Swiss power plug). Symbolic illustration of test equipment. 2) Switch on test equipment and select protective earth continuity test. The coffee machine Citiz & Co has 2 test holes to check both thermoblocks. Test holes on bottom of Citiz / Citiz & milk / Citiz & Co platforms 3) Insert tip of red test probe in test hole and touch thermoblock. 4) Press "measure" button and read off displayed resistance. The resistance must be lower than 0.3 Ohm. 5) Fill in measured value(s) in a test report. 142 Citiz service manual ...
F U N C T I O N T E S T S Do not damage inside coating of milk frother jug with the probe tip. Additional test for coffee machine Citiz & milk: 1) Touch upper metallic part of milk frother with red test probe. 2) Press "measure" button and read off displayed resistance. 3) Repeat measurement on another metallic spot of milk frother for verifica tion. The resistance must be lower than 0.3 Ohm. 4) Fill in measured value(s) in a test report. 9.8.4 What to do if the protective earth continuity test fails • Check/measure ground connection in platform (refer to page 75). ...
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 a very 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 Nespresso for Special test equipment is needed that complies with the regulations to perform insula recommendations tion and withstanding voltage tests. Detailed requirements and tolerances must be veri about test equipment. fied 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 date of repair/test(s) performed test(s)/measuring value(s), test points used test equipment signature 144 Citiz service manual ...
1) Connect the phase and neutral pin of shown here as an the power plug together with a test example. adapter (procured by the repair centre). Use a short circuit plug or special alliga 2) Connect the black measuring cable to tor clips etc. as sub the test adapter (see image). stitute for this test adapter. 3) Turn the ONOFF machine's main switch on position I (ON). Symbolic illustration of test equipment. 4) Switch on test equipment and select an insulation test voltage of 500 V DC. Some test equipment displays test passed or failed instead of the insulation resistance. 5) Touch closing handle with red test probe. 6) Press "measure" button. 7) Read off displayed insulation resist ance or test result. The insulation resistance must be higher than 300 kOhm (300,000 Ohm). 145 Citiz service manual ...
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F U N C T I O N T E S T S The coffee machine Citiz & Co has 2 test holes to check both thermoblocks. Test holes on bottom of Citiz / Citiz & milk / Citiz & Co platforms 8) Insert tip of red test probe in test hole and touch thermoblock. 9) Press "measure" button. 10) Read off displayed insulation resist ance or test result. The insulation resistance must be higher than 300 kOhm (300’000 Ohm). 11) Switch off test equipment. 12) Short red with black test probe to make sure that test voltage is dis charged. 13) Fill in results in a test report. ...
F U N C T I O N T E S T S 4) Remove milk frother from platform. 5) Insert red test probe in central opening of milk frother connector (ground con nection). 6) Press "measure" button. 7) Read off displayed insulation resist ance or test result. 8) Switch off test equipment. 9) Short red with black test probe to make sure that test voltage is dis charged. 10) Fill in result in test report. 9.9.4 What to do if the insulation test fails Risk of damage! A sparkover can damage the electronic control board and sensors etc. • Assume that the coffee machine is defect after a failed insulation test. • Check wiring and locate fault. After fault clearance proceed with troubleshooting check list (see page 49). • In case of doubt an insultation test on the milk frother alone can be carried out on the coffee machine Citiz & milk: touch phase and neutral contacts at the bottom with one test probe successively and the metallic upper part with the other test probe. If insulation test fails, replace milk frother. 147 Citiz service manual ...
TMBU Handle B Complete assembly incl. support, complete wiring 15 Thermobloc 230 V (safety), with NTC Complete assembly incl. support, complete wiring 15 Thermobloc 120 V (USA) (safety), with NTC Complete assembly incl. support, complete wiring 15 Thermobloc 120 V (Brasilien/Taiwan) (safety), with NTC Complete assembly incl. support, complete wiring 15 Thermobloc 120 V (Mexico) (safety), with NTC Complete assembly incl. support, complete wiring 15 Thermobloc 230 V (safety), with NTC Complete assembly incl. support, complete wiring 15 Thermobloc 120 V (USA) (safety), with NTC Complete assembly incl. support, complete wiring 15 Thermobloc 120 V (Brasilien/Mexico) (safety), with NTC Complete assembly incl. support, complete wiring 15 Thermobloc 100 V (safety), with NTC Complete assembly incl. support, complete wiring 15 Thermobloc 230 V (safety), with NTC 154 Citiz service manual ...
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Incl. housing 42 Electronic Control Board M4 220240 V 50/60 Hz Incl. housing 43 Electronic lid 44 Water tank 1 44 Water tank 4 45 Water tank 1 cover 45 Water tank 4 cover 46 Drip tray 1 Nespresso (inc.rubber feet) 46 Drip tray 1 Krups (incl. rubber feet) 46 Drip tray 1 Turmix (incl. rubber feet) 46 Drip tray 1 DeLonghi (incl. rubber feet) 46 Drip tray 1 Magimix (incl. rubber feet) 46 Drip tray 1 Koenig (incl. rubber feet) 47 Rubber feet (Drip tray 1) 48 Drip tray 3 48 Drip tray 4 155 Citiz service manual ...
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Connection cable 230 V country spec. M3 (AU) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M3 (SEV) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M3 (CN) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M3 (Cebec) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M3 (IL) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M3 (KR) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M3 (SG) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M4 (SEV) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M4 (Cebec) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M4 (UK) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M4 (AU) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M4 (IL) Incl. receptacle and isolation 55 Connection cable 230 V country spec. M4 (AR) Incl. receptacle and isolation 156 Citiz service manual ...
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Connection cable 230 V country spec. M4 (CN) Incl. receptacle and isolation 56 Cable bracket UL 2pol 56 Cable bracket UL 3pol 56 Cable bracket IEC 3pol 57 Otter connector CS7 58 Cup storage 59 Aeroccino 3 220240 V 50/60 Hz 59 Aeroccino 3 120127 V 50/60 Hz 60 Mixer (hot milk) 61 Whisk (foam) 62 Aeroccino Lid incl. seal 63 Angle hose water 4 64 Angle hose venting 4 65 Angle hard double M4 66 Tank snap hook 69 Connection isolation 70 Double Tab 4.8Sn 71 Cable fixation TB 72 Cover stopper 157 Citiz service manual ...
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