Nespresso Essenza C91 Service Manual Download

Page: 37 / 40

3 7

Service Manual C91 / D91

Version 1.0

Spare Parts

Repair accessories

* Repair accessories only available at

Nespresso. Please ask your Nespresso
technical contact person.

Manometer and pressure adapter are avail
able at Eugster Frismag AG

Pos. EFR No.

Component

Repairing/service holder device
(for C91or D91)

42213

Manometer

60460

Pressure adapter G4

64373

Spare part seal G4

Summary of Contents for Essenza C91

Page 1: ...en Service Manual Coffee Machine Essenza C91 WIK Essenza D91 WIK...

Page 2: ...NTC ______________________________________ 17 Replacing thermoblock ________________________________ 18 Replacing pump _____________________________________ 19 Replacing electronic control board with...

Page 3: ...ly necessary to follow the instructions in this manual Nespresso technical website Visit the Nespresso technical website periodi cally to check for upgrades technical modifi cations counter measures e...

Page 4: ...rrupter GFCI in the repair centre is highly recommended 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 res...

Page 5: ...pact 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...

Page 6: ...Manufacturing country Conformity with RoHS guidelines Special disposal icon Sign of conformity CE Bar code Serial number This overview shows examples of various brands and is subject to alterations Se...

Page 7: ...7 Main Components Service Manual C91 D91 en Version 1 0 Water circuit 1 Water tank 2 Water tank valve and connector 3 Pump 4 Thermoblock 5 Compact brewing unit TCBU 6 Coffee outlet...

Page 8: ...r tank 0 9 l Drip tray approx 100 ml Capsule container 10 14 pcs Power consumption at all voltages and frequencies Total power consumption 1 260 W Thermoblock 1 200 W Pump old new version 48 65 W Ener...

Page 9: ...itchonmachine bypressingthe On Off button 4 Position receptacle witha capacity ofmin 100 ml under coffee outlet Do not insert a capsule yet 5 Wait until machine is ready coffee button stops blinking 6...

Page 10: ...Procedure to fill water system 1 Perform steps 1 to 5 for preparation see page 9 2 Open closing handle in vertical position 3 Press coffee button 4 Press and hold closing handle to rear end position...

Page 11: ...le 2 Insert capsule 3 Press down closing handle completely 4 Position cup under coffee outlet 5 Press coffee button 6 Press button again to stop coffee flow when cup is full 7 Briefly open closing han...

Page 12: ...he machine is switched off Press and hold On Off button 3 Simultaneously press coffee button three times 4 Release both buttons The coffee button starts blinking fast and the thermoblockheatsup evapor...

Page 13: ...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 1 H z Operating mode Coffee button LED signal Off off Hea...

Page 14: ...replace CBU see page 22 NO Replace the CBU 2 2 Is the capsule correctly ejected YES Go to point 3 NO Replace TCBU 3 Fill water tank 3 1 Water tank is leaking YES Replace water tank NO Go to point 4 4...

Page 15: ...erature is too low less than 83 C YES Descale the machine see page 36 NO Go to point 5 3 5 3 Temperature is too high more than 89 C YES Change NTC see page 18 NO Go to point 6 6 Check for leaks and ch...

Page 16: ...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 Pro...

Page 17: ...low general disassembly see page 17 2 Remove PCB housing 301 3 Unplug NTC connector from electronic control board 300 4 Remove defective NTC temperature sensor 219 from thermoblock 215 and replace it...

Page 18: ...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...

Page 19: ...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...

Page 20: ...mbly 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...

Page 21: ...5 Remove 2 screws 21 andpull offclosing handle 8 6 Remove 2 screws 19 at the front and 1 screw 19 at the back to detach cover 7 C91 machine All screws have the same lenght D91 machine The screw at the...

Page 22: ...al C91 D91 en Version 1 0 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 fu...

Page 23: ...rocedure 1 Fill and insert water tank 2 Open closing handle 3 Insertconnecting unit ofpressure adapter into capsule bay 4 Push back sealing cone into capsule cage 5 Insertfixationunitofpressure adapte...

Page 24: ...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 readju...

Page 25: ...3 Insert connecting and fixation unit of pres sure adapter into capsule bay refer to page 25 4 Press down operating lever 5 Position pot underneath exit tube of pres sure plug 6 Fill and insert water...

Page 26: ...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...

Page 27: ...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 8 Wait until 20 ml...

Page 28: ...hable partsofthe 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 pow...

Page 29: ...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 The resistance must be...

Page 30: ...hunted 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 regulation...

Page 31: ...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 in...

Page 32: ...tip 8 Press measure button 9 Read off displayed insulation resistance or test result The insulation resistance must be higher than 300 kOhm 300 000 Ohm 10 Fill in measured value in a test report 11 Sw...

Page 33: ...ntainer 4 Re insert drip tray and place a pot on it Carefully read safety instructions on decalcifier package 5 Fill measuring jug with 0 5 l fresh potable water and pour 0 1 l descaling fluid in it 6...

Page 34: ...ffee button and let entire descaling solution run through Rinsing 12 Empty pot 13 Rinse water tank thoroughly and fill it with fresh water 14 Place pot on drip tray 15 Press coffee button to start pum...

Page 35: ...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 spong...

Page 36: ...n Version 1 0 Procedure continued 5 Fill tank 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...

Page 37: ...nly available at Nespresso Please ask your Nespresso technical contact person Manometer and pressure adapter are avail able at Eugster Frismag AG 1 2 3 Pos EFR No Component 1 Repairing service holder...

Page 38: ...38 Spare Parts Service Manual C91 D91 en Version 1 0 Spare parts C91...

Page 39: ...TCBU 205 9310132300 C91 D91 Hose assembly 120mm Pump TB 207 5040021800 C91 D91 Cover Hose TB TCBU 227 4010006300 C91 D91 Connector clip 4mm 228 4010006200 C91 D91 Connector clip 5mm 212 9310133800 C91...

Page 40: ...40 Service Manual C91 D91 en Version 1 0 Notes...

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