Essenza C91 (WIK) Essenza D91 (WIK)
Contents
1. Clean machine Service Manual C91 D91 Version 1 0 en Maintenance Daily care and final cleaning Risk of fatal electrical shock and fire Never clean wet or immerse plug cord or appliance in any fluid Unplug appliance and let it cool down to avoid burns Never use hard cleaning brushes and or cleaning agents that contain aggressive or chemical components resp solvents Do not put any part in a dishwasher Preferably use only a damp cloth or sponge and a mild cleaning agent if necessary Do not use a brush to clean the water tank it could be scratched Procedure 1 Eject capsule 2 Empty capsule container 3 Empty water tank and drip tray 4 Clean water tank and drip tray Service Manual C91 D91 Version 1 0 en Maintenance Procedure continued 5 Filltank with fresh water 6 Reassemble coffe machine 7 Press On Off button Wait till coffee button stops blinking 8 Press coffee button and rinse coffe outlet for 10 sec 9 Clean coffee machine Service Manual C91 D91 Version 1 0 en Spare Parts Repair accessories Pos EFRNo Componen Repairing service holder device for C910r D91 2 4223 Manometer 3 60460 Pressure adapter G4 p 64373 Spare part seal G4 i F a Repair accessories only available at Nespresso Please ask your Nespresso technical contact person Manometer and pressure adapter are avail able at Eugster2. 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 appli ance and performing the respective tests according to EN IEC 60335 1 Safety of household and similar electrical appliances and national regulations e g DIN VDE 0701 Description The insulation test assures that wiring and insulation of the coffee machine fullfill the normative Service Manual C91 D91 requirements after a repair rates the insulation capability of the coffee machine is avery dangerous test because ofa 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 insu lation 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 Ask Nespresso for recommenda tions about test equipment 30 Test report For legal reasons a repair
3. Open closing handle and hold it in opened position After coffee button stops blinking press down closing handle completely Empty drip tray After this procedure the machine is blocked for approx 10 minutes till thermoblock temperature lt 100 C Service Manual C91 D91 Version 1 0 en Operation Coffee machine status After pressing the On Off button an automatic self test is performed to check if the NTC is connected the NTC is short circuited the thermoblock reaches the standby temperature within 2 minutes in brewing mode A detected failure is indicated by the back lighted coffee button as well as the operating modes listed in the following table Service Manual C91 D91 Operating mode Coffee button LED signal m m 1 I E i i a a 13 CE Version 1 0 en Troubleshooting Checking the machine on receipt The receipt check enables you to rapidly appropriate repair action Repair any faults found and check if the locate faults on the machine and to initiate Follow the check procedure machine is operating perfectly Check procedure Symptoms Action repair work Further action repair work i _ 1 1 Parts of housing broken or damaged 1T S REpiace paris Ii necessary 1 Check appliance for visible NO Go to point 1 2 damage i gt nere ee danacea YES Replace mains cable l g NO Plug machine to the mains and go to point 2 1 YES Screw on closin
4. 208 to one rubber strap with corner connector 209 first 9 Plug in electrical connections on pump Check for correct wiring of pump 10 Attach pump to second rubber strap 11 Insert new O ring 226 mount hose 205 and clamp 227 12 Mount angled hose 204 Service Manual C91 D91 19 Version 1 0 en Repair Replacing electronic control board with button prints Tools Torx screwdriver Pin TX10 The service engineer must be earthed using an earthing strap Only touch button prints with dedi Cated gloves to avoid oxydation Procedure nem 1 Follow general disassembly see page 17 2 Detach prints of On Off button 13 and coffee button 14 from upper chassis 3 3 Remove 2 screws 19 and lift cover 7 at the front side to thread out cables with button prints 4 Remove housing 301 from electronic control board 300 5 Unplug NTC connector and all wires from electronic control board 300 6 Remove 2 screws 20 and replace defect electronic control board with button prints 7 Assemble in reverse sequence or Lo a Le in ral ane I a I il E tf I dil aod I il i tit Hi l ii Eh il al i 1 gt Check for correct wiring of electronic control board see page 23 Service Manual C91 D91 20 Version 1 0 en Repair Replacing compact brewing unit Tools Torx screwdriver Pin TX10 Blade screwdriver n
5. D91 7 Version 1 0 en Main Components Technical data Service Manual C91 D91 Mains EUR 230V 50 Hz Approvals CE conform Cable length approx 1 1 m Pump data Pump pressure max permissible 19 bar 2 bar during coffee preparation 9 13 bar depending on brand of coffee Flow performance 120 240 ml min at 12 bar Capacities Water tank 0 9 Drip tray approx 100 ml Capsule container 10 14 pcs Power consumption at all voltages and frequencies Total power consumption 1260 W Thermoblock 1200 W Pump old new version 48 65 W 8 Energy consumption CECED FEA 2009 method Energy efficiency class level A Daily energy consumption 129 Wh Annual energy consumption 47 09 kWh Various data Pre heating time approx 50 sec Safety temperature thermal cut off 167 C Coffee temperature at outlet 86 C 3 C Weight of machine approx 3 kg without water Version 1 0 en Operation Preparation 1 Filltank with water 2 Insert water tank in coffee machine 3 Switch on machine by pressing the On Off button 4 Position receptacle with a capacity of min 100 ml under coffee outlet Do not insert a capsule yet 5 Wait until machine is ready coffee button stops blinking Press coffee button to rinse coffee outlet 7 Press coffee button again to stop rinsing when receptacle is filled Service Manual C91 D91 9 Version 1 0 en Operation Fi
6. see page 19 automatic self test continued intervals YES Fill water system see page 10 YES a Water system is empty NO Go to point b i YES Replace TCBU see page 22 5 1 No coffee at outlet YES b Pyramid plate is clogged NO Go to point c 5 Check coffee temperature while YES c Machine is blocked by scale YES Descale machine see page 36 preparing a coffee see page 29 NO Go to point 5 2 2 YES Descale the machine see page 36 5 2 Temperature is too low less than 83 C NO Go to point 5 3 f 2 YES Change NTC see page 18 5 3 Temperature is too high more than 89 C NO Go to point 6 i YES Replace TCBU see page 22 6 1 Leakage at extraction system NO Go to point 6 2 6 2 Leakage at tubes connection YES Replace defective tube and seal 6 Check for leaks and check flow NO Go to point 6 3 YES Machine is scaled YES Descale machine see page 36 NO Replace pump 6 3 Flow rate out of range Contact Nespresso Technical Correspondant for NO No trouble found during the check procedure ftirtn r d tails irord r to take decision YES Descale machine see page 36 7 Descaling process if needed 7 1 Machine scaled NO Go to point 8 rate see pages 25 and following End of check procedure Service Manual C91 D91 1 5 Version 1 0 en Repair Safety instructions Risk of fatal electrical shock Mains voltage inside the coffee machine Disconnect the mains plug b
7. Replacing thermoblock Tools Torx screwdrivers Pin TX10 TX20 Open ended spanner 9 mm AF Torque wrench Procedure 1 Follow general disassembly see page 17 2 Remove 3 screws 19 and separate ther moblock assembly from upper chassis 3 3 Remove screw 222 and separate ther moblock from its support 216 217 4 Remove 2 screws 224 and separate thermal fuses parts of cord set 304 from thermoblock 5 Remove PCB housing 301 6 Unplug NTC connector from electronic control board 300 7 Remove NTC temperature sensor 219 from thermoblock 8 Remove clips 228 and 2 hose connec tors 211 212 from thermoblock 9 Remove ground wire and electrical connections from thermoblock 10 Replace thermoblock 215 11 Assemble in reverse sequence Use a torque wrench 140 160 Nem to tighten NTC temperature sensor 219 with spring lock washer 220 Service Manual C91 D91 18 Version 1 0 en Repair Replacing pump Tools Torx screwdriver Pin TX10 Long nose pliers Blade screwdriver no 7 Procedure 1 Follow general disassembly see page 17 2 Remove clip 227 hose 205 and O ring 206 3 Remove angled hose 204 4 Release pump 208 first from rubber strap 213 at the side of the angled hose 5 Remove electrical connections from pump 6 Release pump from second rubber strap 213 7 Replace defective pump 208 8 Attach new pump
8. This device does not protect against electrical shock due to contact with both circuit conductors 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 Danger of burns Hot parts and water under pressure 1 RCD protected socket outlet inside the coffee machine particu 2 Plug in RCD unit larly in the thermoblock 3 GFCI socket e Let coffee machine cool down before 4 Plua in GFCI cleaning or disassembly KEIN Service Manual C91 D91 4 Version 1 0 en Main Components Overview 1 Closing handle 2 Cover 3 Compact brewing unit TCBU 4 Capsule inlet 5 Side panel 6 On Off button 7 Coffee outlet 8 Coffee button back lighted 9 Container for used capsules 10 Drip grid 11 Drip tray 12 Lower chassis 13 Thermoblock WIK 14 Electronic control board 15 Pump 16 Water tank connector 17 Upper chassis 18 Water tank Service Manual C91 D91 Version 1 0 en Main Components Overview of rating plates The rating plate can be found atthe underside ofthe coffee machine It is of varying design depending on the brand and carries the following information e Machine type e Voltage and power rating e Manufacturing country e Conformity with RoHS guidelines e Special disposal icon e Sign of conformity CE e Barcode e Serial number This overvi
9. and performing the respective tests according to EN IEC 60335 1 Safety of household and similar electrical appliances and national regulations e g DIN VDE 0701 Service Manual C91 D91 Description Protective earth continuity measurements are made between the protective earth terminal of the power plug and the thermoblock all conductive touchable parts of the coffee machine where dangerous voltage could occur if the basic insulation was to fail 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 protective earth continuity measurements Detailed requirements and tolerances must be verified by your local authorities or measure ment supplier in any case Ask Nespresso for recommenda tions about test equipment 28 Test report For legal reasons a repair or test report should be prepared and filed with following informa tion 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 Test sequence Danger of electrocution Do not plug in the coffee machine during the protective earth conti nuity test Read a
10. insulation test 3 Test sequence continued gt The insulation resistance must be higher than 300 kOhm 300 000 Ohm Some test equipment displays test passed or failed instead of the insu lation resistance 6 Fill in measured value in a test report 7 Touch closing handle screw with red test probe Do not scratch surface of closing handle with probe tip 8 Press measure button 9 Read off displayed insulation resistance or test result The insulation resistance must be 10 Fill in measured value in a test report 11 Switch off test equipment 12 Short red with black test probe to make sure that test voltage is discharged Service Manual C91 D91 higher than 300 kOhm 300 000 Ohm What to do if the insulation test fails Risk of damage A sparkover can damage the elec tronic control board and sensors etc Assume thatthe coffee machine is defect after a failed insulation test Check wiring and locate fault After fault clearance proceed with trouble shooting check list see page 14 32 Version 1 0 en Maintenance Descaling 1 Only use Nespresso decalcifier never vinegar Decalcifier is aggressive to surfaces Immediately clean drops of descaling solution Preparation 4 5 6 T Switch off machine Check that there is no capsule in inlet and close handle Remove drip grid Empty drip tray and capsule container Re insert dri
11. or test report should be prepared and filed with following informa tion 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 Test sequence Danger of electrical shock short circuit e Do not plug in the coffee machine during insulation test Danger of electrical shock e Do not touch tip of test probes e Do not touch metallic parts of coffee machine during test e Read and observe safety instructions in user manual of test equipment Continued on next page Version 1 0 en Function Tests Protective insulation test 2 Test sequence continued 1 Connect the phase and neutral pin of the power plug together with a test adapter procured by the repair centre A Swiss power plug is shown here as an example 2 Connect the black measuring cable to the test adapter see image Use a short circuit plug or special alligator clips etc as substitute for this test adapter 3 Switch on test equipment and select an insulation test voltage of 500 V DC Symbolic illustration of test equip ment 4 Touch thermoblock through one of the marked holes with tip of red test probe 5 Press measure button and read off displayed insulation resistance or test result Continued on next page Service Manual C91 D91 31 Version 1 0 en Function Tests Protective
12. than 50 sec without water flow 12 Switch off machine 13 Open valve to empty pressure gauge Service Manual C91 D91 Version 1 0 en Function Tests Measuring coffee temperature Procedure 1 Press On Off button to switch on machine 2 Position measuring beaker underneath coffee outlet 3 After warming up press coffee button 4 Preheat coffee outlet for 10 sec with hot water 5 Empty measuring beaker 6 Insert a capsule Cosi is the most suit able 7 Press coffee button Wait until 20 ml coffee has flown in the measuring beaker Measure the coffee temperature approx 5 10 mm below the outlet opening Coffee temperature should be approx 86 C 3 C 187 F 5 4 F Service Manual C91 D91 Version 1 0 en Function Tests Protective earth continuity test 1 What coffee machine model has to be test ed and when This test is necessary for class 1 equipment three wire power cord with protective earth after a repair whenever the housing was opened and for example a general disas sembly was performed Therefore all coffee machine models have to be tested after opening the housing except country specific models without a protective earth connection 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 appli ance
13. Frismag AG Service Manual C91 D91 37 Version 1 0 en Spare Parts Spare parts C91 Service Manual C91 D91 38 Version 1 0 en Spare Parts WIK P N Pos 15 16 17 18 C91 Water tank A 097 Water tark B C91 Capsule Container A D91 Capsule Container B 9310154900 C91 Drip Grid A 9310155000 D91 Drip Grid B C91 Drip Tray A Nespresso printed D91 Drip Tray B Nespresso printed D91 Drip Tray B DeLonghi printed D91 Drip Tray B Magimix printed D91 Drip Tray B Koenig printed C91 Drip Tray A Turmix printed C91 Drip Tray A Krups printed C91 D91 Closing handle C91 D91 Torx head screw ST3 9x17 1o 9310132100 caret TCBU assembly a 9310133600 C81 Upper chassis A 39310135000 9310131800 cat side panda OOOO O O C a 9810135100 DOT Side panels OOOO 226 5040037700 CoD O ring 352 206 9310132400 _ C91 D91 Hose assembly 225mm TB TCBU C91 D91 Hose assembly 120mm Pump TB 207 228 C91 D91 Connector clip 5mm Part Description Service Manual C91 D91 wo 9 Part Description Pos wiken 242 9310133800 C91 D91 Hose connector 55 gt 13 5040023600 C91 On Off button silicon 13 5040044000 D91 On Off button silicon gt 14 5040023300 C91 Coffee button silicon 14 5040044100 D91 Coffee button silicon 300 1350009200 C91 D91 PCB assembly 230V 301 9310133900 C91 D91 PCB housing a02 9310134000 C91 D91 PCB base gt 225 5040038600 C91 D91 Isolation spout a
14. Service Manual Coffee Machine Essenza C91 WIK Essenza D91 WIK Contents Preface General Nespresso technical website Content updates General Safety Notes Main Components Overview Overview of rating plates Water circuit Technical data Operation Preparation Fill water system Making coffee Empty water system Coffee machine status Troubleshooting Checking the machine on receipt Repair Safety instructions General disassembly Replacing NTC Replacing thermoblock Replacing pump Replacing electronic control board with button prints Service Manual C91 D91 gt WO WOW W O dono a 9 9 10 11 12 13 14 14 16 16 16 17 18 19 20 Replacing compact brewing unit Wiring diagram Europe 230V 50 Hz Function Tests Measuring flow rate 1 Measuring flow rate 2 Checking for leaks and pump pressure 1 Checking for leaks and pump pressure 2 Measuring coffee temperature Protective earth continuity test 1 Protective earth continuity test 2 Protective insulation test 1 Protective insulation test 2 Protective insulation test 3 Maintenance Descaling 1 Descaling 2 Daily care and final cleaning Spare Parts Repair accessories Spare parts C91 Notes Version 1 0 en Preface General Nespresso technical website Content updates The purpose of this service manual is to Visit the Nespresso technical website periodi The version number of this service provide t
15. efore 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 General disassembly Tool Torx screwdriver for security screws Pin TX 10 Illustration of a Pin TX screw head Empty water system if necessary see page 12 Service Manual C91 D91 Procedure 1 Remove water tank 15 and drip tray 5 together with drip grid 4 and capsule container 6 2 Remove 2 screws 20 on the front side of the machine 16 o1 Place machine on the repairing service holder device see page 42 Remove 6 screws 20 on the bottom of the machine Swing out and remove both side panels 1 Remove lower chassis 2 Version 1 0 en Repair Replacing NTC Tools Torx screwdriver Pin TX10 Open ended spanner 9 mm AF Torque wrench Procedure 1 Follow general disassembly see page 17 Remove PCB housing 301 Unplug NTC connector from electronic control board 300 4 Remove defective NTC temperature sensor 219 from thermoblock 215 and replace it with a new one 5 Assemble in reverse sequence WN Re use spring lock washer 220 and tighten new NTC temperature sensor 219 with torque wrench 140 160 Ncm a tits oF a Service Manual C91 D91 1 7 Version 1 0 en Repair
16. en Function Tests Measuring flow rate 1 Procedure 1 2 3 Fill and insert water tank Open closing handle Insert connecting unit of pressure adapter into capsule bay Push back sealing cone into capsule cage Insert fixation unit of pressure adapter into capsule bay Press down operating lever Continued on next page Service Manual C91 D91 a ae p k p m Je s T oe an 7 Mn L Im En z van denn aise ae ae rd Version 1 0 en Function Tests Measuring flow rate 2 Procedure continued 7 Connect pressure hose to pressure tester 8 Position measuring beaker underneath exit tube of pressure tester 9 Switch on machine 10 Press coffee button after heating up 11 Open valve fully till water begins to flow 12 Close valve slowly until 12 bar are indi cated The manometer must be observed continuously and the pressure regu lated using the valve if necessary With increasing temperature the pressure also increases if neces sary readjust the pressure to 12 bar 13 Perform measurement for approx 30 sec 14 There must be at least 60 120 ml water in the measuring beaker Notice With a flow of lt 60 ml the pump is defective or there is a leak in the system Large fluctuations in the pressure gauge readings 4 bar during measurement are indicative of a defective pump Service Manual C91 D91 24 Version 1 0 en Function Tests C
17. ew shows examples of various brands and is subject to alterations Serial number codification Example 10190C91x0002782090 10190 production date 190 day of year 2010 C91 machine type X production site 0002 incremental number per production day 7 machine partner codification 8 voltage 2 mains plug version 09 colour version 0 checksum number Service Manual C91 D91 NESPRESSO essenza c91 EUR 220 240V 1260W 50Hz MADE IN CHINA IN ARM O I N 10190C91x0002782090 magimix Ref 11 310 M 100 220 240V 1260W 50Hz Made in PRC wg D91x00016820LA KOENIG DKB Household Switzerland AG Eggb hlstrasse 28 Postfach CH 8052 Z rich Switzerland Model Capri Art Nr B03198 220 240V 50Hz 1260W D91x000248A KRUPS www krups com 220 240V 50Hz 1260W GE MADE IN CHINA Si REF XN200340 7Z0 2710 R NINE 10190091 x0005584093 TYPE XN2003 CH 8052 Z rich Switzerland ROH 220 240V 50Hz 1260W m A C WIR AIX TE INTL DKB Household Switzerland AG Eggb hlstrasse 28 Postfach Art Nr A12158 C91x000288 gt TYPE EN 90 GY DeLonghi PLVDE www delonghi com 220 240V 50Hz 1260W P 1 9MPa 19 bar MADE IN CHINA C 3 fe eal SKU 5513214571 027 1 8 S900202 INN 0 00 Version 1 0 en Main Components Water circuit 1 Water tank 2 Water tank valve and connector 3 Pump 4 Thermoblock 5 Compact brewing unit TCBU 6 Coffee outlet Service Manual C91
18. g handle screws at defined NO It is hard or impossible to close the closing handle torque or replace CBU see page 22 NO Replace the CBU YES Go to point 3 7 YES Replace water tank YES a Check if mains cable is functional eo ee O POMES NO Replace it YES b Check if On Off button is functional YT 3 G0 pond NO Replace it 2 1 Closing handle works correctly 2 Check mechanical elements YES c Check if pump is working press coffee YES Go to point f button NO Go to point d YES d Check if coffee button is functional aoe ee pointe NO Replace it 4 1 Machine is not working no function YES e Check if pump s thermal fuse 128 C is YES Replace pump see page 20 defective NO Go to point f YES f Check if thermoblock s thermal fuse 167 C YES Replace thermal fuse and if necessary is defective thermoblock too see page 19 NO Go to point g 4 Press On Off button to perform automatic self test YES Replace electronic mainboard see page 21 NO Replace defective s wire s YES g Check if electrical wires are functional Service Manual C91 D91 1 4 Version 1 0 en Troubleshooting Check procedure Symptoms Action repair work Further action repair work YES Check if thermoblock heating element is func YES Replace NTC see page 18 4 Press On Off button to perform 4 2 Backlighted coffee button blinks at irregular gona NO Replace thermoblock
19. he service personnel with all neces cally to check for upgrades technical modifi manual is printed on the lower right sary information with regards to correct cations counter measures etc for this coffee corner of the page handling maintenance and repair of the coffee machine https business nespresso com machines C91 and D91 Access is restricted and can be Version 1 0 obtained by asking your Nespresso First released service manual version technical contact person This manual should be used by the techni cians as a valuable aid to guarantee the permanent readiness for use of the machine In order to take full advantage of all the func tions it is absolutely necessary to follow the Please keep this manual together with the instructions in this manual corresponding service documentation This way you are assured to have the necessary information Service Manual C91 D91 3 Version 1 0 en General Safety Notes Risk of fatal electrical shock and fire Example illustrations of typical devices 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
20. hecking for leaks and pump pressure 1 The following components are checked for leaks Compact brewing unit TCBU Hose connections Thermoblock Pump Preparation unplug machine from mains 1 Remove right side panel 2 Open closing handle 3 Insert connecting and fixation unit of pres sure adapter into capsule bay refer to page 25 Press down operating lever 5 Position pot underneath exit tube of pres sure plug Fill and insert water tank 7 Connect mains cable gt Dangerous voltage inside coffee machine Do not touch any live part while performing checks Hot pressurized parts inside coffee machine Do not touch any hot part while performing checks Wear safety glasses during inspection Continued on next page Service Manual C91 D91 Version 1 0 en Function Tests Checking for leaks and pump pressure 2 Procedure continued 8 Switch on machine Press coffee button after heating up 9 Open valve and leave water to run out for approx 10 sec 10 Fully close valve The pressure will rise rapidly initially and stabilise between 16 19 bar check of pump pressure The pressure will rise slowly due to the temperature increase If the pressure exceeds 23 bar the machine has to be switched off and pressure released through the pres sure valve 11 Perform visual and acoustic checks on all pressurized connections The pump must not be in operation for longer
21. ll water system If the coffee machine cannot pump water although there is water in the tank the water circuit may be empty Procedure to fill water system 1 Perform steps 1 to 5 for preparation see page 9 Open closing handle in vertical position Press coffee button 4 Press and hold closing handle to rear end position 5 Observe capsule inlet for appearing water 6 Press down closing handle immediately when first droplets are visible 7 Press coffee button again to stop water flow Oo N Service Manual C91 D91 Version 1 0 en Operation Making coffee Open closing handle Insert capsule Press down closing handle completely Position cup under coffee outlet Press coffee button Press button again to stop coffee flow when cup is full Briefly open closing handle after coffee preparation and eject capsule into capsule container aS E N Service Manual C91 D91 Version 1 0 en Operation Empty water system After operation residual water remains in the water circuit This residual water can be removed before a longer period of non use for frost protection before repair and following shipping zu Empty water tank The machine is switched off Press and hold On Off button Simultaneously press coffee button three times Release both buttons The coffee button starts blinking fast and the thermoblock heats up evaporating the residual water
22. nd observe safety instruc tions in user manual of test equip ment This test sequence is not applicable for coffee machines with two wire power cords without ground pin Continued on next page Version 1 0 en Function Tests Protective earth continuity test 2 Test sequence continued 1 Connect black measuring cable to ground pin of power plug with an alligator clip example shown Swiss power plug 2 Switch on test equipment and select protective earth continuity test E Symbolic illustration of test equip ment 3 Touch thermoblock through one of the marked holes with tip of red test probe 4 Press measure button and read off displayed resistance u The resistance must be lower than 0 3 Ohm 5 Fillin measured value in a test report Proceed with protective insulation test before reassembling the housing of the coffee machine What to do if the protective earth continuity test fails Check ground wire connection on thermoblock refer to wiring diagrams on page 23 Service Manual C91 D91 Version 1 0 en Function Tests Protective insulation test 1 Perform the protective earth conti nuity test at first if it is mandatory 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 the housing was opened and for example a general disas sembly was performed General
23. ngular 9310134100 C91 D91 Thermoblock assembly 230V 1190000700 C91 D91 NTC 215 216 217 218 221 222 2x 223 224 2x wire fuse 20 5010026500 C91 D91 Spring lock washer for NTC 304 2010069000 C91 D91 Cordset VDE plug 200 201 202 203 204 9310132200 C91 D91 Water tank connector assembly OO 2 9310134200 C91 D91 Pump fixation 208 209 210 213 Fuse 128 C 9310133100 C91 D91 Pump 230V assembly fuse128 C connec 9310134300 C91 D91 Hose connector 90 TB pump OoOO M FF 8020182200 C91 Color box C91 Nespresso 8020182600 D91 Color box D91 Nespresso PF 8100117801 C91 Instruction for user C91 Nespresso PF 8100118201 D91 Instruction for user D91 Nespresso 8050004300 C91 Polyfoam tray left 8050004400 C91 Polyfoam tray right EEE EEE 8050004300 D91 Polyfoam tray left 8050004400 D91 Polyfoam tray right Version 1 0 en Notes Service Manual C91 D91 40 Version 1 0 en
24. o 4 Long nose pliers Torque wrench Procedure 1 Remove water tank 15 and drip tray 5 together with drip grid 4 and capsule container 6 2 Place machine on the repairing service holder device see page 42 3 Remove 4 screws 20 on the bottom of the machine 4 Swing out and remove both side panels 1 5 Remove 2 screws 21 and pull off closing handle 8 6 Remove 2 screws 19 at the front and 1 screw 19 at the back to detach cover 7 F E 3 ver 7 Fi C91 machine All screws have the same lenght D91 machine The screw at the back is longer than those at the front 9 Remove clip 227 and hose 206 with O gt Tighten new closing handle screws ring 226 from compact brewing unit 21 with a torque of 200 Ncm f 10 Assemble new compact brewing unit brewing unit 100 with a blade screwdriver together with new coffee outlet 9 in 8 Remove 4 screws 19 and detach reverse sequence compact brewing unit 100 Replace O ring 226 7 Unlatch coffee outlet 9 from compact Service Manual C91 D91 21 Version 1 0 en Repair Wiring diagram Europe 230V 50 Hz 1 Heat sink 2 Print for On Off button 3 Print for coffee button with LED 4 NTC temperature sensor 5 Thermal fuses on thermoblock 6 Thermal fuse on pump Print ON OFF Print Coffee Button at 2 5 O 2 T Ser Mains Plug L NPE Service Manual C91 D91 22 Version 1 0
25. p tray and place a pot on it Carefully read safety instructions on decalcifier package Fill measuring jug with 0 5 fresh potable water and pour 0 1 descaling fluid in it Fill descaling solution in water tank Re insert water tank Press On Off button and coffee button simultaneously for at least 3 seconds to switch on machine and start descaling mode fast blinking coffee button Descaling 8 9 Press coffee button to start pump Let entire descaling solution pass through coffee outlet Service Manual C91 D91 nn Ei ale i a nn piece J ae n a arinin ums m En m q n m a iadan fu IA ee ae En z a i nie u n m nsu a x u Pee m a a a 5 aai i i ct a a Hl x a meian nF k nn m jn maoa mn aent oe ana ce ae un en m i ur J f bs m ula n 5 a Gia a D f nun nu a In i Version 1 0 en Maintenance Descaling 2 10 11 Fill water tank again with descaling solu tion from pot Repeat descaling procedure one more time Press coffee button and let entire descaling solution run through Rinsing 12 13 14 15 16 17 18 Empty pot Rinse water tank thoroughly and fill it with fresh water Place pot on drip tray Press coffee button to start pump Let complete content of water tank run through coffee outlet Switch off machine Descaling is completed Remove and empty pot
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