Nespresso Momento 120 User manual

SERVICE MANUAL
COFFEE/MILK MACHINE
MOMENTO 120
Version 1.4 EN
last modied - 15.06.2023

2Momento 120 Service Manual Version 1.4 EN
CONTENTS
1 Content Updates....................................................................... 8
2 General Safety Notes .............................................................. 10
3 Main Components .................................................................. 11
3.1 Momento 120 Chassis ......................................................................................................... 11
3.2 Coee Module ..................................................................................................................... 12
3.3 Milk Module ........................................................................................................................ 14
3.4 Overview – Chassis Rear Side .............................................................................................. 16
3.5 Removable Parts ................................................................................................................. 17
3.6 Rang Plate ......................................................................................................................... 18
3.6.1 Posion ...................................................................................................................... 18
3.6.2 Example ..................................................................................................................... 18
3.7 Technical Data ..................................................................................................................... 19
 ............................................................................. 20
4.1 Assemble Power Cord ......................................................................................................... 20
4.2 Direct Water Connecon (DWC) ......................................................................................... 21
4.2.1 DWC Installaon – Machine Side .............................................................................. 22
4.3 Assembling Coee and Milk Module .................................................................................. 23
4.3.1 Placing the Machine .................................................................................................. 23
4.3.2 Mount the Cup Holder Support................................................................................. 23
4.3.3 Install the Coee Module .......................................................................................... 24
4.3.4 Install the Milk Module ............................................................................................. 25
4.4 Inial Boot and Sengs ...................................................................................................... 26
4.4.1 Modem Connecvity Check ...................................................................................... 26
4.4.2 DWC Set Up (if installed) ........................................................................................... 26
4.4.3 Set Agent Code .......................................................................................................... 26
4.5 Milk Foam Adjustment ........................................................................................................ 27
4.5.1 MMI Menu for Foam Sengs .................................................................................... 27
4.5.2 Hot Foam Adjustment Procedure and Reference Scale ............................................ 28
4.5.3 Cold Foam Adjustment Procedure and Reference Scale ........................................... 29
4.5.4 Foam Quality Troubleshoong Tips ........................................................................... 30
 ............................................................................... 31
5.1 Switching the Coee Machine ON/OFF ............................................................................... 31
5.2 Preparing a Beverage .......................................................................................................... 31
5.2.1 Coee Preparaon .................................................................................................... 31
6 MMI Menus............................................................................ 32
6.1 Sengs ................................................................................................................................ 32
6.2 Maintenance Menu ............................................................................................................. 33
6.2.1 Emptying the Machine .............................................................................................. 33
6.3 Setup Menu ......................................................................................................................... 34
6.3.1 Change Language ....................................................................................................... 34
6.3.2 Energy Saving ............................................................................................................ 34
6.3.3 Set Temperature ........................................................................................................ 35

3Version 1.4 EN Momento 120 Service Manual
6.3.4 Set Cup Size ............................................................................................................... 35
6.3.5 Set Recipe .................................................................................................................. 36
6.3.6 Set Access Code ......................................................................................................... 36
6.3.7 Set Water Hardness ................................................................................................... 37
6.3.8 Reset to Factory Sengs ........................................................................................... 37
6.4 Technician Menu ................................................................................................................. 38
6.4.1 Set Agent Code .......................................................................................................... 38
6.4.2 Milk Module Diagnoscs ........................................................................................... 38
6.4.3 Milk Pump Calibraon ............................................................................................... 40
6.4.4 Upgrade Machine Soware....................................................................................... 41
6.4.5 Component Maintenance Status ............................................................................... 42
7 Maintenance .......................................................................... 43
7.1 Clean the Milk Machine (daily) ............................................................................................ 43
7.1.1 Reinforced Cleaning in Case of Misuse ...................................................................... 47
7.2 Change Internal Filter .......................................................................................................... 48
7.3 Descaling ............................................................................................................................. 49
7.3.1 Descaling Frequency .................................................................................................. 49
7.3.2 Descaling Logic – Machine Blockage ......................................................................... 50
7.3.3 Coee module ........................................................................................................... 50
7.3.4 Milk Module ............................................................................................................... 50
...................................................................... 51
8.1 Prevenve Maintenance Plan Coee Module ..................................................................... 51
8.1.1 Components to be replaced periodically .................................................................. 51
8.2 Prevenve Maintenance Milk Module ................................................................................ 51
8.2.1 Components to be replaced ...................................................................................... 51
8.2.2 Cleaning of FEP Tubes and T-Connector .................................................................... 52
8.2.3 Cleaning the DWC Out Tube ...................................................................................... 53
8.2.4 Procedure aer Prevenve Maintenance ................................................................. 53
8.3 General Milk Module Errors ................................................................................................ 54
8.3.1 Safety Stop Mode ...................................................................................................... 55
8.4 In Cup Quality ...................................................................................................................... 56
8.5 Cleaning Process ................................................................................................................. 57
8.6 Steam Boiler ........................................................................................................................ 57
.......................................... 58
9.1 Boiler Filling and Emptying .................................................................................................. 58
9.2 Steam Supply ....................................................................................................................... 59
9.3 Milk Products ...................................................................................................................... 60
9.4 Rinsing Aer Product Preparaon ...................................................................................... 61
9.5 Drain Into Drip Tray ............................................................................................................. 62
9.6 Pressure Control, Overpressure and An-Vacuum Valve .................................................... 63

4Momento 120 Service Manual Version 1.4 EN
........................................... 64
10.1 Refrigerator and its Controllers......................................................................................... 64
10.1.1 Overview .................................................................................................................. 64
10.1.2 Milk Level Sensor ..................................................................................................... 65
10.1.3 Milk NTC .................................................................................................................. 66
10.2 Steam Boiler ...................................................................................................................... 67
10.2.1 Level Probe .............................................................................................................. 67
10.2.2 Steam Boiler NTC ..................................................................................................... 68
10.3 Fluid Line NTC .................................................................................................................... 69
11 Repair ................................................................................... 70
11.1 General .............................................................................................................................. 70
11.2 Basic Repair Instrucons ................................................................................................... 70
11.3 Safety Informaon ............................................................................................................ 70
11.4 Screw Connecons – Chassis ............................................................................................ 72
11.5 Screw Connecons – Coee Module ................................................................................ 75
11.6 Screw Connecons – Milk Module .................................................................................... 77
11.6.1 Metal Component Support ..................................................................................... 78
11.6.2 Plasc Component Support ..................................................................................... 79
11.7 Tools and Accessories ........................................................................................................ 80
11.8 Simple Repair Work ........................................................................................................... 80
11.9 General Disassembly ......................................................................................................... 81
11.9.1 Removable Parts ...................................................................................................... 81
11.9.2 Remove Front Doors ................................................................................................ 83
11.9.3 Remove Panel Rear .................................................................................................. 84
11.9.4 Remove Side Panel(s) ............................................................................................... 86
11.9.5 Remove Coee Module ........................................................................................... 88
11.9.6 Remove Milk Module............................................................................................... 89
11.10 Chassis Repairs ................................................................................................................ 91
11.10.1 Replace Milk/Coee Module Coupling .................................................................. 91
11.10.2 Replace Main Fuse ................................................................................................. 92
11.10.3 Remove Water Tank Slot........................................................................................ 94
11.10.4 Replace ON/OFF Switch ......................................................................................... 98
11.10.5 Replace Power Supply ......................................................................................... 100
11.10.6 Remove Drip Tray Contacts for Cleaning ............................................................. 102
11.10.7 Replace Smart PCB ............................................................................................... 103
11.10.8 Replace Extension PCB ........................................................................................ 106
11.11 Coee Module Repairs .................................................................................................. 108
11.11.1 Remove Main PCB Cover ..................................................................................... 108
11.11.2 Remove Head Base Plate ..................................................................................... 110
11.11.3 Replace Outlet LED .............................................................................................. 113
11.11.4 Replace Capsule Recognion ............................................................................... 115
11.11.5 Replace MMI Assembly (Screen) ......................................................................... 117
11.11.6 Replace Valve(s) ................................................................................................... 121
11.11.7 Replace Thermoblock .......................................................................................... 123
11.11.8 Replace Flowmeter .............................................................................................. 126
11.11.9 Replace Pump ...................................................................................................... 127

5Version 1.4 EN Momento 120 Service Manual
11.11.10 Replace Main PCB .............................................................................................. 129
11.11.11 Replace Power Supply ........................................................................................ 130
11.11.12 Replace Brewing Unit (Maint. Kit) ...................................................................... 131
11.11.13 Replace Brewing Unit (MHBU) ........................................................................... 136
11.12 Milk Module Repairs (General) ..................................................................................... 139
11.12.1 Removing FEP Tubes ............................................................................................ 141
11.12.2 Replacing Valve Membranes (PM) ....................................................................... 142
11.12.3 Replace Outlet Valve ........................................................................................... 143
11.12.4 Replace Fridge Fan ............................................................................................... 145
11.12.5 Replace Control Board ......................................................................................... 147
11.12.6 Replace Micro Switches / Water Protecon Clamp............................................. 149
11.12.7 Replace Chassis / Inlet Geometry Handle ............................................................ 150
11.12.8 Replace Steam Valve Plunger and Gasket (PM) ................................................... 152
11.12.9 Replace Water Coupling ...................................................................................... 154
11.12.10 Replace Water Coupling Check Valve (PM) ........................................................ 155
11.13 Milk Module Repairs (Plasc Component Support) ...................................................... 156
11.13.1 Replace RF-Box .................................................................................................... 156
11.13.2 Detach Hydraulic Unit and PCB Assembly ........................................................... 159
11.13.3 Replace Pressure Sensor...................................................................................... 163
11.13.4 Replace Air Valve ................................................................................................. 164
11.13.5 Replace Steam Pressure Regulator ...................................................................... 165
11.13.6 Replace Emptying Valve....................................................................................... 166
11.13.7 Replace NTC Fluid line ......................................................................................... 167
11.13.8 Replace Water Pump ........................................................................................... 168
11.13.9 Replace Steam Heang Chamber ........................................................................ 169
11.13.10 Replace Steam Valve .......................................................................................... 170
11.13.11 Remove Hydraulic Components Support .......................................................... 171
11.13.12 Replace Boiler .................................................................................................... 174
11.13.13 Replace Milk Pump ............................................................................................ 176
11.14 Milk Module Repairs (Metal Component Support) ....................................................... 178
11.14.1 Replace RF-Box .................................................................................................... 178
11.14.2 Detach Hydraulic Unit and PCB Assembly ........................................................... 181
11.14.3 Replace Pressure Sensor ...................................................................................... 185
11.14.4 Replace Air Valve ................................................................................................. 186
11.14.5 Replace Steam Pressure Regulator ...................................................................... 187
11.14.6 Replace Emptying Valve ....................................................................................... 188
11.14.7 Replace NTC Fluid line .......................................................................................... 189
11.14.8 Replace Water Pump ........................................................................................... 190
11.14.9 Replace Boiler ...................................................................................................... 192
11.14.10 Replace Steam Valve .......................................................................................... 194
11.14.11 Replace Steam Heang Chamber ...................................................................... 195
11.14.12 Replace Milk Pump ............................................................................................ 196

6Momento 120 Service Manual Version 1.4 EN
 ................................................................. 199
12.1 Momento 120/200 Chassis ............................................................................................. 199
12.2 Coee Module ................................................................................................................. 200
12.3 Milk Module .................................................................................................................... 201
12.4 PE Distribuon ................................................................................................................. 202
13 Final tests ........................................................................... 203
13.1 Protecve Earth (PE) Connuity Test .............................................................................. 204
13.2 Protecve Insulaon Test ................................................................................................ 206
13.3 Funconal Test of the Milk Module ................................................................................ 208
....................................... 209
14.1 Milk Module .................................................................................................................... 209
14.2 Hydraulic Module ............................................................................................................ 210
14.3 RF-Box ............................................................................................................................. 211
14.4 PCB and Water Protecon............................................................................................... 212

7Version 1.4 EN Momento 120 Service Manual
PREFACE
The purpose of this service manual is to provide the service personnel with all neces-
sary informaon with regards to correct handling, maintenance and repair of the
Momento 120 coee machine.
This manual should be used by the technicians as a valuable aid to guarantee the per-
manent readiness for use of the machines. In order to take full advantage of all the
funcons, it is absolutely necessary to follow the instrucons in this manual.
Only use original spare parts from your ocial supplier for maintenance and repair
work. Spare parts lists and exploded drawings are subject to change. To obtain the
last version, please contact your ocial spare parts supplier.
Visit the Nespresso technical website periodically to check for upgrades, technical
modicaons, counter measures etc. for these coee machines:
hps://business.nespresso.com
Please keep this
manual together
with the corresponding
service documentaon.
This way you are
assured to have the
necessary informaon.
Access is restricted
and is obtained by
asking your Nespresso
technical contact
person.

8Momento 120 Service Manual Version 1.4 EN
Content Updates
1 
Version 0.1
• Removal of spare parts list/drawings.
• Preliminary service manual version.
Version 0.2
• Dra of all repair procedures added/nalised.
Version 0.3
• Removed the troubleshoong info of the Momento 100/200 service manual and
the Momento 120 user manual.
• Included informaon from Thermoplan technical manual.
Version 0.4
• Interim version, reordering of installaon chapter subsecons.
• Implementaon of new feedback as far as informaon is available.
Version 0.5
• Prevenve maintenance and soware diagnosc menu.
• Added chapter/sub-chapter numbering.
Version 1.0
• Minor adjustments, spelling check, nal version for SOP.
Version 1.1
• Milk Pump Calibraon procedure.
Version 1.2
• Restructuring for inclusion of plasc component carrier.
• Inclusion of plasc component carrier.
• Several updates and amendments.
• New and more specic change log from this version onward:
  Requested by
Removed error list from Appendix secon -Nespresso
Corrected wrong Hz for South Korea p. 19 Nespresso
Power rang of complete milk module added to technical data p. 19 Nespresso
Added info about necessity for machine to be upright 24h before machine is
switched on aer milk module installaon p. 25 THP
New secon "Reinforced Cleaning in Case of Misuse" p. 48 Nespresso
Added info about machine blockage if no descaling is performed p. 51 Nespresso
Adjusted page references for PM on both component support versions p. 52 -
Added "Cleaning of FEP Tubes and T-Connector" to PM p. 53 THP
Reworded “valve motor” to “magnec coil” for consistency p. 153 THP
Change procedure to remove the water coupling (hose ng stays in tube) p. 155 THP
New procedure to replace the air valve (pcs) p. 165 THP

9Version 1.4 EN Momento 120 Service Manual
Content Updates
  Requested by
New procedure to replace the air valve (mcs) p. 187 THP
Updated milk module wiring diagram p. 202 THP

General procedures for both component support versions p. 140 Exisng Content
Procedures for the plasc component support (new content) p. 157 THP
Procedures for the metal component support (exisng content) p. 179 Exisng Content
Version 1.3
  Requested by
Reworded “Flow Control Valve” to “Air Valve” for consistency -Nespresso, THP
Added more details about the descaling logic (machine blockage) p. 51 Nespresso
New procedure for PM to clean DWO tube if machine is used with DWC p. 54 Nespresso
Added “Safety Stop Mode” informaon to the troubleshoong secon p. 56 Nespresso
Added a new secon with funconal details for the milk module p. 65 Nespresso
Added amperage remark of 10 A to main fuse replacement p. 93 Nespresso
Version 1.4
  Requested by
Updated hot foam adjustment procedure and reference scale  Nespresso, THP
Added cold foam adjustment secon and reference scale  Nespresso, THP
Added foam quality troubleshoong ps  Nespresso, THP
Removed foam secon from MMI menu chapter  Consistency

10 Momento 120 Service Manual Version 1.4 EN
General Safety Notes
2 GENERAL SAFETY NOTES


• 
• 
• 



thermoblock and boiler).
• 
• 


• 
people around you.
• 
• 
-


• 

• 
As an addional 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.
RESET
TEST
RESET
TEST
31 2 4
Fig. 1
1) RCD protected socket-outlet
2) Plug-in RCD unit
3) GFCI socket
4) Plug-in GFCI
A class 1/I laser
product is safe
under reasonable
foreseeable condions
of operaon and is
not harmful to the
eyes provided that the
product is used and
maintained correctly.
Example
illustraons of
typical devices.

11Version 1.4 EN Momento 120 Service Manual
Main Components > Momento 120 Chassis
3 MAIN COMPONENTS
3.1 Momento 120 Chassis
1
2
3
4
5
6
7
8
9
(14)13121110
Fig. 2
1) Top plate with milk coupling
2) Access point PCB
3) Smart PCB
4) Coupling chassis / coee module
5) Structure blind 120
6) Water tank slot 120
7) Water tank
8) Water tank door
9) Power connecon
10) Waste water outlet
11) Extension PCB
12) Coupling chassis / milk module
13) EMC PCB and Power supply
14) ON/OFF switch (underneath)
Fluid System
C
M
2
3
4
5
6
1
Fig. 3
1) Water tank with oponal lter
2) Coupling water tank
3) Coupling chassis / coee module
4) Coupling chassis / milk module
5) Coee module  p. 12
6) Milk module  p. 14

12 Momento 120 Service Manual Version 1.4 EN
Main Components > Coee Module
3.2 
1
2
3
4
5
8
17
18
67
15 16
9
10
11
12
13
14
Fig. 4
1) Capsule recognion
2) Module handle / cross beam
3) Thermoblock
4) Main PCB
5) Smart / extension PCB connector
6) Flow meter
7) Pump
8) 2/2-way valves
9) Head base plate
10) Capsule guide with lid
11) MMI screen
12) Outlet
13) Blind cup holder
14) Cup holder support
15) Motorised brewing unit
16) Coupling chassis / coee module
17) Power supply
18) Coupling milk module

13Version 1.4 EN Momento 120 Service Manual
Main Components > Coee Module
Fluid System
1
2
3
5
7
4
9
68
10 12
13
1411
Fig. 5
1) Coupling chassis / coee module
2) Flowmeter
3) Pump
4) T-Connector
5) 2/2-way valve DEV 122
6) Drain
7) Brewing unit – Fluidic compensaon
chamber
8) Thermoblock
9) T-Connector
10) 2/2-way valve DEV 122
11) Hot water outlet
12) 2/2-way valve DEV 122 inversed
13) Brewing unit – Capsule
14) Coee outlet

14 Momento 120 Service Manual Version 1.4 EN
Main Components > Milk Module
3.3 Milk Module
1
3
4
5
6
7
8
9
10
2
11
Fig. 6
1) Hydraulic unit
2) Waste water outlet
3) Outlet valve
4) Heat exchanger
5) Compressor
6) Control board
7) Coupling chassis / milk module
8) RF-Box
9) Milk module door
10) Milk tank
11) Fridge

15Version 1.4 EN Momento 120 Service Manual
Main Components > Milk Module
Fluid System
17
2
14
12
°C
°C
C
13
5
9
11
6
7
4
16
15
10
8
18
21
22
19 20
13
22
23
Fig. 7
1) Coupling chassis / milk module
2) Fridge
3) Milk or cleaning tank
4) Cleaning tablet
5) Source valve 3/2
6) Self priming water pump
7) Self priming connecon
8) Emptying valve 2/2
9) Sucon nozzle valve 2/2
10) Steam boiler
11) Air valve 2/2
12) Pump-heang unit
13) Milk pump
14) Heang chamber
15) Pressure reducer
16) Steam valve 2/2
17) Combinaon valve
18) Outlet valve 3/2
19) Coupling milk / coee module
20) Coee module
21) Cleaning valve 3/2
22) Outlet to drip tray
23) Drip tray
Components
and pipes under
pressure are marked

or box.

on those components
or pipes, perform


If the module is


at least 1h before



hot and can cause
burns.

16 Momento 120 Service Manual Version 1.4 EN
Main Components > Overview – Chassis Rear Side
3.4 
2
1
3 4 5 6 7
Fig. 8
1) Cable strain relief
2) Power cord
3) Power socket
4) DWC-Kit installaon area
5) Venng channel
6) Access point area
7) Telemetry installaon area
The Access point area (6) and Telemetry installaon area (7) have numbered plugs for
connecon as follows:
1) Tower link plug
2) Cabinet plug
3) Direct water connecon plug
4) Wired access point (Helbling debugging)
5) Telemetry modem plug

17Version 1.4 EN Momento 120 Service Manual
Main Components > Removable Parts
3.5 Removable Parts
4
3
6
7
5
2
1
Fig. 9
1) Internal water lter
2) Milk tank
3) Milk module cleaning tank
4) Water tank 120
5) Capsule container
6) Cup holder
7) Drip tray 120/200

18 Momento 120 Service Manual Version 1.4 EN
Main Components > Rang Plate
3.6 
3.6.1 
Fig. 10
The rang plate is located on the inside of the water tank door.
3.6.2 Example
Fig. 11

19Version 1.4 EN Momento 120 Service Manual
Main Components > Technical Data
3.7 

Europe (LT, EE, LV, RU, NO, SE, FI, DK, ES, IT, CH, UK, DE, AUS, ZA) ...............230 V, 50 Hz
US / CA .........................................................................................................120 V, 60 Hz
Mexico .................................................................................................. 127 V, 50 / 60 Hz
Brazil .............................................................................................................127 V, 60 Hz
Chile ..............................................................................................................220 V, 50 Hz
Argenna ......................................................................................................220 V, 50 Hz
Costa Rica, Guatemala, El Salvador, Ecuador, Nicaragua ..............................120 V, 60 Hz
Colombia ......................................................................................................110 V, 60 Hz
Israel .............................................................................................................230 V, 50 Hz
Australia / New Zealand ................................................................. 220–240 V, 50/60 Hz
China.....................................................................................................220–240 V, 50 Hz
Hong Kong ............................................................................................220–240 V, 50 Hz
Taiwan ..........................................................................................................110 V, 60 Hz
South Korea ..................................................................................................220 V, 60 Hz
Japan ...................................................................................................... 100 V, 50/60 Hz
Singapore, Malaysia......................................................................................230 V, 50 Hz

Thermoblock (coee module) ............................................................... nominal 1100 W
Pump (coee module) ................................................................................. 55 W – 70 W
Milk module (complete) ...................................................................................... 2100 W
Fridge compressor (milk module) ............................................................................ 50 W

Operang temperature range ........................................ +5 °C – +32 °C (+41 °F – +90 °F)
Storage temperature range .........................................−25 °C – +60 °C (−13 °F – +140 °F)
Operang humidity range ...........................................................no condensaon, 90 %
Operang altude .................................................................. approx. 2500 m (735 hPa)

Water tank 120 .............................................................................................................5 l
Milk tank .......................................................................................................................3 l
Drip tray 120 ....................................................................................................... 1600 ml
Capsule container ......................................................................................... 40 pcs. min.

Momento 120 .......................................................................................................35.4 kg

Double coee/milk chassis ..............................................................560 × 500 × 420 mm
Power cord length .................................................................................................. 1.8 m

20 Momento 120 Service Manual Version 1.4 EN
Installaon
4 INSTALLATION
This chapter will guide you through the steps for installing a Momento 120 coee
machine on the customer’s side.
• Assemble the power cord  p. 20.
• Install the direct water connecon kit  p. 21 ().
• Assembling coee and milk module  p. 23
• Insulaon resistance test  p. 207.
• Inial boot and sengs  p. 26.
• Check and adjust the milk foam quality  p. 28.
4.1 
Fig. 12
Prerequisites
• Panel rear is removed  p. 85.
• Right side panel is removed  p. 87.
Procedure
1. Loosen 2 screws (TX10) and open the cable strain relief (see detail).
2. Connect the power cord to the machine.
3. Install the power cord like shown and fasten it with the cable strain relief.
4. Re-assemble the rear panel and the right side panel.
