Nespresso Momento 120 Service Manual
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Nespresso Momento 120 Service Manual

Coffee/milk machine
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SERVICE MANUAL
COFFEE/MILK MACHINE
MoMento
120
Version 1.4 EN
last modified - 15.06.2023

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Mike
March 26, 2025

What does error code 109 mean

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olivee
January 26, 2025

The machine moments 120. If I turn it off and on again, it just goes back to the failure code.

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Summary of Contents for Nespresso Momento 120

  • Page 1 SERVICE MANUAL COFFEE/MILK MACHINE MoMento Version 1.4 EN last modified - 15.06.2023...

  • Page 2: Table Of Contents

    1 Content Updates ............... 8 2 General Safety notes .............. 10 3 Main Components ..............11 3.1 Momento 120 Chassis ......................11 3.2 Coffee Module ........................12 3.3 Milk Module ........................14 3.4 Overview – Chassis Rear Side ....................16 3.5 Removable Parts .........................
  • Page 3 9.1 Boiler Filling and Emptying ....................58 9.2 Steam Supply ........................59 9.3 Milk Products ........................60 9.4 Rinsing After Product Preparation ..................61 9.5 Drain Into Drip Tray ......................62 9.6 Pressure Control, Overpressure and Anti-Vacuum Valve ............ 63 Version 1.4 EN Momento 120 Service Manual...
  • Page 4 11.11.3 Replace Outlet LED ....................113 11.11.4 Replace Capsule Recognition ................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 Momento 120 Service Manual Version 1.4 EN...
  • Page 5 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 Heating Chamber ..............195 11.14.12 Replace Milk Pump .................... 196 Version 1.4 EN Momento 120 Service Manual...
  • Page 6 12 Wiring Diagrams ..............199 12.1 Momento 120/200 Chassis ..................... 199 12.2 Coffee Module ......................... 200 12.3 Milk Module ........................201 12.4 PE Distribution ......................... 202 13 Final tests ................203 13.1 Protective Earth (PE) Continuity Test ................204 13.2 Protective Insulation Test ....................206 13.3 Functional Test of the Milk Module ................
  • Page 7 Spare parts lists and exploded drawings are subject to change. To obtain the last version, please contact your official spare parts supplier. Visit the Nespresso technical website periodically to check for upgrades, technical Access is restricted and is obtained by modifications, counter measures etc.
  • Page 8 • Draft of all repair procedures added/finalised. Version 0.3 • Removed the troubleshooting info of the Momento 100/200 service manual and the Momento 120 user manual. • Included information from Thermoplan technical manual. Version 0.4 • Interim version, reordering of installation chapter subsections.

  • Page 9: Content Updates

    → p. 29 Nespresso, THP Added cold foam adjustment section and reference scale → p. 30 Nespresso, THP Added foam quality troubleshooting tips → p. 30 Nespresso, THP Removed foam section from MMI menu chapter → p. 33ff Consistency Version 1.4 EN Momento 120 Service Manual...

  • Page 10: General Safety Notes

    (GFCI), in the repair centre is highly recommended. Example illustrations of typical devices. R E S E T RE SE T TE S T TE ST Fig. 1  1) RCD protected socket-outlet 3) GFCI socket 2) Plug-in RCD unit 4) Plug-in GFCI Momento 120 Service Manual Version 1.4 EN...

  • Page 11: Momento 120 Chassis

    Main Components > Momento 120 Chassis 3 M A I n C o M P o n e n t S 3.1 Momento 120 Chassis (14) Fig. 2  1) Top plate with milk coupling 8) Water tank door 2) Access point PCB...

  • Page 12: Main Components

    5) Smart / extension PCB connector 14) Cup holder support 6) Flow meter 15) Motorised brewing unit 7) Pump 16) Coupling chassis / coffee module 8) 2/2-way valves 17) Power supply 9) Head base plate 18) Coupling milk module Momento 120 Service Manual Version 1.4 EN...

  • Page 13: Coffee Module

    10) 2/2-way valve DEV 122 4) T-Connector 11) Hot water outlet 5) 2/2-way valve DEV 122 12) 2/2-way valve DEV 122 inversed 6) Drain 13) Brewing unit – Capsule 7) Brewing unit – Fluidic compensation 14) Coffee outlet chamber Version 1.4 EN Momento 120 Service Manual...
  • Page 14 Fig. 6  1) Hydraulic unit 7) Coupling chassis / milk module 2) Waste water outlet 8) RF-Box 3) Outlet valve 9) Milk module door 4) Heat exchanger 10) Milk tank 5) Compressor 11) Fridge 6) Control board Momento 120 Service Manual Version 1.4 EN...

  • Page 15: Milk Module

    19) Coupling milk / coffee module 8) Emptying valve 2/2 20) Coffee module 9) Suction nozzle valve 2/2 21) Cleaning valve 3/2 10) Steam boiler 22) Outlet to drip tray 11) Air valve 2/2 23) Drip tray 12) Pump-heating unit Version 1.4 EN Momento 120 Service Manual...

  • Page 16: Overview - Chassis Rear Side

    The Access point area (6) and Telemetry installation area (7) have numbered plugs for connection as follows: 1) Tower link plug 2) Cabinet plug 3) Direct water connection plug 4) Wired access point (Helbling debugging) 5) Telemetry modem plug Momento 120 Service Manual Version 1.4 EN...

  • Page 17: Removable Parts

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

  • Page 18: Rating Plate

    Main Components > Rating Plate 3.6 Rating Plate 3.6.1 Position Fig. 10  The rating plate is located on the inside of the water tank door. 3.6.2 example Fig. 11  Momento 120 Service Manual Version 1.4 EN...

  • Page 19: Technical Data

    Milk tank ........................3 l Drip tray 120 ....................... 1600 ml Capsule container ..................40 pcs. min. Weight Momento 120 .......................35.4 kg Dimensions (width × depth × height) Double coffee/milk chassis ..............560 × 500 × 420 mm Power cord length ....................1.8 m Version 1.4 EN...

  • Page 20: Assemble Power Cord

    Installation 4 I n S tA L L At I o n This chapter will guide you through the steps for installing a Momento 120 coffee machine on the customer’s side. • Assemble the power cord → p. 20. • Install the direct water connection kit → p. 21 (optional).

  • Page 21: Installation

    Fitting material : Brass, nickel plated Sieve : Mesh Ø 0.5 mm maximum on installation side (mandatory) DWC Kit Momento 100/120 The SKU of the DWC Kit are different for the Momento 100 and 120. Fig. 13  Version 1.4 EN Momento 120 Service Manual...

  • Page 22: Direct Water Connection (Dwc)

    1. Mount the DWC Kit using the screw 2. Connect the hose from the water provided. tank. 3. Connect the plug from the DWC Kit 4. Continue with the client side to the connector number 3 (labelled installation. on the chassis rear side). Momento 120 Service Manual Version 1.4 EN...

  • Page 23: Dwc Installation - Machine Side

    1. Insert the cup holder support (2) on the right side of the coffee module. 2. Slide the cup holder support upwards and screw it on (TX20). 3. Attach the blind cup holder (1) in the same way on the left side of the coffee module. Version 1.4 EN Momento 120 Service Manual...

  • Page 24: Assembling Coffee And Milk Module

    4. To ensure correct positioning, push the coffee module into the main housing and pull it down at the capsule ejection opening. Fig. 17  5. Fasten the Tri-Wing screw to secure the coffee module. 6. Mount the cup holder. Momento 120 Service Manual Version 1.4 EN...

  • Page 25: Install The Coffee Module

    6. Put the screw cover back and close both doors. Perform an insulation resistance test to finish the modules installation. → p. 207 Milk foam quality must be checked and adjusted after every installation → p. 28 Version 1.4 EN Momento 120 Service Manual...

  • Page 26: Initial Boot And Settings

    The Agent code setting is not part of the setup wizard and must be done manually allow the correct after assembling and installing the modules → p. 39. transmission of telemetry data! Momento 120 Service Manual Version 1.4 EN...
  • Page 27 finish preparation with ice set cold recipes guidance start preparation with ice no ice guidance 2. Press the “next” symbol to scroll 4. Select “start preparation with ice”. through the settings. 3. Select “set cold recipes guidance”. Version 1.4 EN Momento 120 Service Manual...

  • Page 28: Milk Foam Adjustment

    Air flow increases → foam becomes more solid. If the air limit is exceeded → blow out, many big bubbles! Air flow decreases → foam becomes more liquid. Refer to the next 2 pages for optimal adjustment of both hot and cold foam. Momento 120 Service Manual Version 1.4 EN...

  • Page 29: Hot Foam Adjustment Procedure And Reference Scale

    Restart from step 1 and increase the air valve value by 2%. (c) If the milk foam surface has too many bubbles and/or no consistent ring then the amount of air needs to be decreased. Restart from step 1 and decrease the air valve value by 2%. Version 1.4 EN Momento 120 Service Manual...

  • Page 30: Cold Foam Adjustment Procedure And Reference Scale

    5. Dispense milk foam at the centre of the cup until reaching the top of the cup (place the cup such that the milk outlet will be centred above the cup). 6. Continue on the next page → Momento 120 Service Manual Version 1.4 EN...

  • Page 31: Foam Quality Troubleshooting Tips

    Restart from step 1 and increase the air valve value by 2%. (c) If the milk foam surface has too many bubbles and/or no consistent ring then the amount of air needs to be decreased. Restart from step 1 and decrease the air valve value by 2%. Version 1.4 EN Momento 120 Service Manual...

  • Page 32: Operation

    Move the cup support to the side if a large cup is used. espresso lungo select recipe ristre o americano la e cappuccino macchiato 3. Select the recipe. Recommended recipes for the inserted capsule are highlighted. Momento 120 Service Manual Version 1.4 EN...

  • Page 33: Mmi Menus

    A Maintenance menu → p. 34 default code for the maintenance B Setup menu → p. 35 menu and the setup menu is 8888. The default code for the technician C Technician menu → p. 39 menu is 8520. Version 1.4 EN Momento 120 Service Manual...

  • Page 34: Maintenance Menu

    - Milk module: → p. 51 5) Reset the cabinet capsule container counter: Set counter back to 0. Available only on machines equipped with the Nespresso base cabinet (optional). 6) Display the connectivity status: Network data are displayed. Available only on machines equipped with telemetry (optional).

  • Page 35: Setup Menu

    In machine enters sleep mode. In this this mode, the machine automat- mode, a control panel has to be ically turns on again if a user gets touched to turn the machine on near it. again. Version 1.4 EN Momento 120 Service Manual...

  • Page 36: Set Temperature

    3 di erent cup sizes Lorem ipsum do you intend to use nespresso branded cups? 1. Select “yes” if you use Nespresso 2. Have your standard small, medium branded cups. If not, select “no”. The and large cups available. Tap on machine will help you to define the the “next”...

  • Page 37: Set Recipe

    3. The new selected recipe is displayed. 4. Set the recipe length for all available recipes with +/–. Nespresso recom- mends recipe lengths for each recipe as displayed. 6.3.6 Set Access Code enter your new confirm your new...

  • Page 38: Set Water Hardness

    1. Select “yes” to reset the machine to its factory settings. To cancel, select “no” or tap on the “cancel” symbol. Momento 120 Service Manual Version 1.4 EN...

  • Page 39: Technician Menu

    15) Set cold recipes menu item → p. 27 6.4.1 Set Agent Code The agent code list is updated and available for download on the “INFOTECH“ section of the Nestlé Nespresso business extranet https://business.nespresso.com. please enter confirm your agent code your agent code 1.
  • Page 40 Activate 80% PMW/deactivate pump running Sound of pump motor, changing fluid line tem- perature, water is dispensed in the drain Activate/deactivate fan running Sound of fan Heater in steam boiler Activate/deactivate heating Increasing steam pressure and boiler temperature Compressor Activate/deactivate compressor running Sound of compressor Momento 120 Service Manual Version 1.4 EN...

  • Page 41: Milk Pump Calibration

    Please note that the dispensed volume is not adjusted during the pro- cedure. The calibration is done by calculating the average of the three entered shot volumes. To ensure that the calibration was successful, dispense a test product. Version 1.4 EN Momento 120 Service Manual...

  • Page 42: Upgrade Machine Software

    MMI Progress: 2% Explanation of abbreviations: • FOC: Coffee main • IMM: MMI (interface) • AHC: Chassis • DIV: Video drivers • CER: Capsule recognition • KLM: Milk Remember to remove the SD card after the update. Momento 120 Service Manual Version 1.4 EN...

  • Page 43: Component Maintenance Status

    1. Press the “next” symbol to scroll 2. On the last page, press the “next” through the components. symbol once more. adjust maintenance threshold pump 25’000 brewing unit 48’000 3. Adjust the threshold or press the “next” symbol for more components Version 1.4 EN Momento 120 Service Manual...

  • Page 44: Maintenance

    6. Remove the drip tray with the drip machine. grid from the machine. Empty the drip tray. Wash with soapy water, rinse and dry both elements. Insert the drip tray with drip grid back to the machine. Momento 120 Service Manual Version 1.4 EN...
  • Page 45 Handle the cleaning tank with care is not clogged. If it is, remove the as the cleaning solution is warm and pipe and clean it with fresh drinking composed of cleaning agent. water. Version 1.4 EN Momento 120 Service Manual...
  • Page 46 Be careful, it might be warm. 21. Swing the cup support to the side 22. Empty the capsule container, wash and remove the capsule container. with soapy water and dry it. Momento 120 Service Manual Version 1.4 EN...
  • Page 47 25. Rinse the outlets cover with fresh 26. Clean the coffee and the milk outlets drinking water and dry it. with a disposable tissue or a paper towel. 27. Insert the outlets cover back into the machine. Version 1.4 EN Momento 120 Service Manual...

  • Page 48: Reinforced Cleaning In Case Of Misuse

    If the user did complete one cleaning cycle, only a normal cleaning is required: cleaning cycle 1/2 completed – start the cycle 2/2 insert capsule clean hot foam hot water hot milk empty and clean milk tank Momento 120 Service Manual Version 1.4 EN...

  • Page 49: Change Internal Filter

    (For first use, ing water and attach the lid again. simply insert the new water filter.) Tilt the water tank back and forth to remove air bubbles from the filter. Insert the water tank back to the machine. Version 1.4 EN Momento 120 Service Manual...

  • Page 50: Descaling

    ~8 months ~4 months ~4 months ~3 months ~2 months ~3 months ~10 months ~8 months ~5 months ~6 months ~3 months ~5 months ~16 months ~13 months ~8 months ~10 months ~5 months ~8 months Momento 120 Service Manual Version 1.4 EN...

  • Page 51: Descaling Logic - Machine Blockage

    2 bags of Nespresso liquid descaler 1. When the “descale” symbol appears 1 l of water in red, the machine should be des- caled. Tap on the red descaling sym- The procedure will last about 20 bol.

  • Page 52: Troubleshooting

    - Source valve 3/2 inside the RF-Box → p. 157 no. (4) - Suction nozzle valve above the pressure sensor → p. 164 no. (4) - Cleaning valve 3/2 behind the steam heating chamber → p. 170 no. (3) Momento 120 Service Manual Version 1.4 EN...

  • Page 53: Cleaning Of Fep Tubes And T-Connector

    • Hydraulic unit and PCB assembly are detached → p. 182. Procedure 1. Remove the FEP tube (1), (2), (3) and the T-Connector (A). 2. Flush the FEP tube (1), (2), (3) and the T-Connector carefully with water. Version 1.4 EN Momento 120 Service Manual...

  • Page 54: Cleaning The Dwc Out Tube

    8.2.4 Procedure after Preventive Maintenance • Carry out the final tests: - Protective earth (PE) continuity test → p. 205 - Protective insulation test → p. 207 - Functional test of the milk module → p. 209 Momento 120 Service Manual Version 1.4 EN...

  • Page 55: General Milk Module Errors

    Troubleshooting 8.3 General Milk Module errors Please refer to the specific error list on the Nespresso extranet for a complete listing of specific error numbers and their meaning. Always check for an available firmware update first. Product Icons Greyed out •...

  • Page 56: Safety Stop Mode

    (a) Error 40052 is always set in case of a (b) This error flag indicates the source safety stop that triggered the safety stop Please refer to the specific error list on the Nespresso extranet for a complete listing of specific error numbers and their meaning. Momento 120 Service Manual Version 1.4 EN...

  • Page 57: In Cup Quality

    • Check the function of the milk pump in the diagnostic tool V2 (not yet available). • Check the performance of the milk pump in the diagnostic tool V2 (not yet available). • Check the air valve setting for froth and reduce it if needed. Version 1.4 EN Momento 120 Service Manual...

  • Page 58: Cleaning Process

    • Check the connectors of the control board. Boiler Refilling Fails • Check the connector of the water level probe of the boiler. • Check the ground connector of the milk module. • Check the connectors of the control board. Momento 120 Service Manual Version 1.4 EN...

  • Page 59: Milk Module - Hydraulic Functions

    RF box into the cleaning container using the internal boiler pres- sure. To reduce the water temperature, cold water is added via the milk pump (this path is not shown in the figure below). RF-Box (cleaning tank) Chassis (water tank) Drip tray Fig. 23  Version 1.4 EN Momento 120 Service Manual...

  • Page 60: Steam Supply

    (yellow path) boosted by the milk pump. The milk product heated in this way is conveyed via the outlet valve (which is placed on the fridge) to the milk outlet of the machine. outlet valve Fig. 24  Momento 120 Service Manual Version 1.4 EN...

  • Page 61: Milk Products

    The nozzle valve closes, throttling the flow of milk from the RF box and increasing the vacuum on the suction side of the pump. The air valve opens and air (blue path) is sucked in. RF-Box (milk tank) outlet valve Machine interior Fig. 25  Version 1.4 EN Momento 120 Service Manual...

  • Page 62: Rinsing After Product Preparation

    The source valve placed in the RF-box switches at the end of the product, whereby cold water is drawn in from the machine’s water tank (green path) instead of milk from the milk tank (yellow path). Milk tank Source valve Chassis (water tank) Fig. 26  Momento 120 Service Manual Version 1.4 EN...

  • Page 63: Drain Into Drip Tray

    (red path). In normal operation, the fluid is then led through the cleaning valve into the drip tray (drain) (further path). Milk outlet RF-Box nozzle (cleaning tank) Drip tray Fig. 27  Version 1.4 EN Momento 120 Service Manual...

  • Page 64: Pressure Control, Overpressure And Anti-Vacuum Valve

    (orange path). The The pressure sensor is connected to the pressure line via a branch sensor is pressurized so that it does not overheat when the pressure relief valve is opened. Machine interior Drip tray Fig. 28  Momento 120 Service Manual Version 1.4 EN...

  • Page 65: Milk Module - Functional Details

    • The fan is equipped with a data signal to watch its state. • If the refrigerator has been stored in a not upright position, it needs to be settled down in upright position for 12 hours. Version 1.4 EN Momento 120 Service Manual...

  • Page 66: Milk Level Sensor

    • Detects the milk tank, or rather if it is empty or full. • Detects the milk empty level. • The cleaning tank is not getting detected. • This is a capacitive sensor located inside the inner refrigerator body. • This sensor is not replaceable. Momento 120 Service Manual Version 1.4 EN...

  • Page 67: Milk Ntc

    To avoid freezing of the refrigerator wall, the cooling performance is reduced and the temperature target is set higher when the milk tank is empty or MIN level is detected. In order to speed up refrigerator cooling, always place a full tank of refrigerated milk. Version 1.4 EN Momento 120 Service Manual...

  • Page 68: Steam Boiler

    • This is a probe and not a sensor. • The sensory parts are located on the PCB. • The probe is acting as a conductor. • The water is acting as a conductor when the probe is covered. Momento 120 Service Manual Version 1.4 EN...

  • Page 69: Steam Boiler Ntc

    • Usually, the regulator is controlling the boiler by its steam pressure. • In addition, the NTC is also watching the temperature of the water and will have redundant safety thresholds. • Used during descaling to control the temperature of the descaling solution. Version 1.4 EN Momento 120 Service Manual...

  • Page 70: Fluid Line Ntc

    47 kΩ @ 25° C Fig. 34  • Is measuring the fluid temperature to achieve the target temperature. • The NTC will give the temperature information to the controller which is con- trolling the temperature by adjusting the milk pump speed. Momento 120 Service Manual Version 1.4 EN...

  • Page 71: Repair

    Protective measures: • Refer to special wiring instructions in assembly tips. • Refer to the wiring diagrams when reconnecting wires (→ p. 200). • Make sure that wires do not touch hot parts – use existing cable clips. Version 1.4 EN Momento 120 Service Manual...
  • Page 72 Danger of flooding in regard to the direct water connection! • During repair of the coffee machine on-site, turn off and lock stop valve of the direct water connection. • Attach a danger sign to prevent unauthorised operation. Momento 120 Service Manual Version 1.4 EN...

  • Page 73: Screw Connections - Chassis

    Crosshead screw M4 × 12 Coffee module fixing screw (1×) A Tri-Wing screw 15.3 ± 0.5 kgf cm head looks like this: 150.0 ± 4.9 Ncm Tri-Wing security screw 13.3 ± 0.4 lbf-in diam. 4 × 30 Version 1.4 EN Momento 120 Service Manual...
  • Page 74 4 × 30 Water tank slot fixing screw (1×) Crosshead screw PT 40 × 12 ON/OFF switch support fixing screws (2×) TX 20 K40 × 12 ON/OFF switch fixing screws (2×) TX 20 PT 40 × 10 Momento 120 Service Manual Version 1.4 EN...
  • Page 75 TX 20 PT 40 × 10 Milk/Coffee module coupling (2×) Hexagon socket M4 × 12 Power supply support fixing screw (1×) TX 20 PT 40 × 10 Power supply fixing screw (2×) TX 10 M3 × 8 Version 1.4 EN Momento 120 Service Manual...

  • Page 76: Screw Connections - Coffee Module

    K40 × 12 Cross beam to chassis BU fixing screws (2×) TX20 M4 × 30 Head base plate fixing screws (2×) TX20 M4 × 20 Cross beam to head base plate fixing screws (2×) TX20 K40 × 12 Momento 120 Service Manual Version 1.4 EN...
  • Page 77 Position Front cover fixing screws (4×) TX20 M4 × 12 MMI assembly fixing screws (4×) TX20 M4 × 12 Pump fixing screw (1×) Crosshead screw M4 × 20 Power supply fixing screws (2×) TX10 K30 × 12 Version 1.4 EN Momento 120 Service Manual...

  • Page 78: Screw Connections - Milk Module

    K40 × 12 11.6 Screw Connections – Milk Module Screw connection / type torque Position Outlet valve fixing screws (2×) Crosshead screw Fan cover fixing screws (2×) Crosshead screw PCB assembly fixing screw (1×) Crosshead screw K35 × 10 Momento 120 Service Manual Version 1.4 EN...

  • Page 79: Metal Component Support

    Screw connection / type torque Position Hydraulic unit fixing screws (2×) Crosshead screw Boiler fixing screw (1×) Crosshead screw Steam valve fixing screws (2×) Crosshead screw K35 × 6 Steam heating chamber fixing screws (2×) Crosshead screw M4 × 6 Version 1.4 EN Momento 120 Service Manual...

  • Page 80: Plastic Component Support

    Repair > Screw Connections – Milk Module 11.6.2 Plastic Component Support Screw connection / type torque Position Hydraulic unit fixing screws (2×) Crosshead screw Hydraulic components support fixing screw (1×) Crosshead screw Momento 120 Service Manual Version 1.4 EN...

  • Page 81: Tools And Accessories

    The following machine parts can be removed and replaced without prior disassembly of the machine: • Drip tray • Drip grid • Cup holder • Capsule container • Water tank • Internal water filter • Milk tank • Cleaning tank • Coffee Module • Milk module Version 1.4 EN Momento 120 Service Manual...

  • Page 82: General Disassembly

    – appliance must be isolated! Fig. 35  1. Switch off the machine and unplug the power cord. 2. Remove the drip tray (2) and the capsule container (1) from the coffee module. Momento 120 Service Manual Version 1.4 EN...
  • Page 83 3. Open the water tank door (5) with its key and remove the water tank (4). 4. Open the milk module door (3) with its key and remove the milk tank (2). 5. Remove the cup holder (1 – see detail) by first moving it up and then swing it out. Version 1.4 EN Momento 120 Service Manual...

  • Page 84: Remove Front Doors

    2. Remove the hinge covers (1) with the help of a small flathead screwdriver. 3. Loosen 2 screws (crosshead) per door on the hinges. 4. Remove the water tank door / milk module door. Assembly tip • Do not forget to put back the hinge covers (1). Momento 120 Service Manual Version 1.4 EN...

  • Page 85: Remove Panel Rear

    Repair > General Disassembly 11.9.3 Remove Panel Rear Fig. 38  1. Loosen 3 screws (crosshead) on the panel rear (1). Version 1.4 EN Momento 120 Service Manual...
  • Page 86 • First, slide in the guides on top of the panel rear (1). • Slide the panel slightly down again until all hooks fall into place. • Slide the panel up again to snap it in and fix it with the screws. Momento 120 Service Manual Version 1.4 EN...

  • Page 87: Remove Side Panel(S)

    Repair > General Disassembly 11.9.4 Remove Side Panel(s) Fig. 40  Prerequisites • Panel rear is removed → p. 85. Procedure 1. Loosen 2 screws (crosshead) from the side panel (right:1/left:2) that you wish to remove. Version 1.4 EN Momento 120 Service Manual...
  • Page 88 Repair > General Disassembly Fig. 41  2. Pull the side panel (right:1/left:2) back and away from the machine at the same time, to release its hooks. 3. Remove the side panel (right:1/left:2). Momento 120 Service Manual Version 1.4 EN...

  • Page 89: Remove Coffee Module

    Fig. 42  Prerequisites • Removable parts are removed → p. 82. Procedure 1. Loosen the Tri-Wing security screw (see detail) on the coffee module. 2. Lift the coffee module upward while pulling on it to remove it. Version 1.4 EN Momento 120 Service Manual...

  • Page 90: Remove Milk Module

    1. Open the milk module door (2) 2. Remove the screw cover (1) and loosen the Tri-Wing screw on the top part of the milk module (see detail). 3. Put the screw cover (1) back and close the milk module door (2). Momento 120 Service Manual Version 1.4 EN...
  • Page 91 Fig. 44  4. Loosen the Tri-Wing security screw (see detail) on the bottom of the milk module. 5. Open the water tank door (1). 6. Lift the milk module slightly upward while pulling on it to remove it. Version 1.4 EN Momento 120 Service Manual...

  • Page 92: Chassis Repairs

    Fig. 45  Prerequisites • Coffee module is removed → p. 89. • Milk module is removed → p. 90. Procedure 1. Loosen 2 screws (hexagon socket) from the top plate (1). 2. Remove the milk/coffee module coupling (2). Momento 120 Service Manual Version 1.4 EN...

  • Page 93: Replace Main Fuse

    Procedure 1. Press in the latch fixating the EMC PCB lid (1, see detail). 2. Push the EMC PCB lid (1) back until you hear it click. 3. Lift up and remove the EMC PCB lid (1). Version 1.4 EN Momento 120 Service Manual...
  • Page 94 Assembly tip Fig. 48  • Make sure that the “FRONT” label points to the front of the machine when put- ting back the EMC PCB lid. The lid will not snap in if placed the wrong way. Momento 120 Service Manual Version 1.4 EN...

  • Page 95: Remove Water Tank Slot

    • Water tank door is removed → p. 84. • Right side panel is removed → p. 87 • Milk module is removed → p. 90. Procedure 1. Pull off the hose from the DWC-Kit in the back if a DWC-Kit is installed. Version 1.4 EN Momento 120 Service Manual...
  • Page 96 Repair > Chassis Repairs Fig. 50  2. Remove the screw cover (1) with the help of a small flathead screwdriver. 3. Loosen the screw (crosshead) at the top of the water tank slot (2). Momento 120 Service Manual Version 1.4 EN...
  • Page 97 (1) as soon as you are able to reach it. 6. Pull off the hose from the from the back of the water tank slot (1). 7. Completely remove the water tank slot (1). Version 1.4 EN Momento 120 Service Manual...
  • Page 98 (1) before mounting/fixing the water tank slot (2). Fig. 52  • Pull the hose from the top of the water tank slot (2) through the respective hole in the chassis (circled in red) before mounting. • Reconnect the hose to the DWC-Kit, if present. Momento 120 Service Manual Version 1.4 EN...

  • Page 99: Replace On/Off Switch

    2. Unplug the receptacles on the EMC PCB (1) coming from the ON/OFF switch. Fig. 54  3. Loosen 2 screws (TX20) from the switch support (1). 4. Lift the support (1) and wires out of the chassis. Version 1.4 EN Momento 120 Service Manual...
  • Page 100 6. Remove the ON/OFF switch (2) from the switch support (1). Fig. 56  7. Remove the ON/OFF actuator (1) from the ON/OFF switch (2) with the help of a small flathead screwdriver. 8. Unplug the wires and replace the ON/OFF switch (2). Momento 120 Service Manual Version 1.4 EN...

  • Page 101: Replace Power Supply

    2. Loosen 1 screw (TX20, see detail) on the power supply support (2). 3. Tilt the power supply support (2) upwards on the front and push it back a bit to release the two support extensions from the chassis (circled in red, see detail view from the back). Version 1.4 EN Momento 120 Service Manual...
  • Page 102 • Slide in the support extensions into the guiding (circled in red) in the back of the chassis first, then pull the power supply support forward and tilt it down in its place before fastening the screw. Momento 120 Service Manual Version 1.4 EN...

  • Page 103: Remove Drip Tray Contacts For Cleaning

    1. Loosen 1 screw (TX20) on drip tray contact plate (3). 2. Turn the drip tray contact plate (3) around and clean the contacts (see detail, yellow surfaces). 3. Also clean the contacts (1) on the drip tray (2) itself (see detail, yellow surfaces). Version 1.4 EN Momento 120 Service Manual...

  • Page 104: Replace Smart Pcb

    Repair > Chassis Repairs 11.10.7 Replace Smart PCB Fig. 61  Prerequisites • Coffee module is removed → p. 89. Procedure 1. Unplug all receptacles from the front of the smart PCB (1). Momento 120 Service Manual Version 1.4 EN...
  • Page 105 Repair > Chassis Repairs Fig. 62  2. Release the latch (circled in red) on the bottom of the smart PCB (1) with the help of a screwdriver and slide the smart PCB (1) upwards, out of its guides. Version 1.4 EN Momento 120 Service Manual...
  • Page 106 Slot (e) is used as interface to program or update the smart PCB. 5. Replace the smart PCB (2). Assembly tip • Make sure that the connector latch of the grounding wire is locked by slightly pulling it down. Momento 120 Service Manual Version 1.4 EN...

  • Page 107: Replace Extension Pcb

    1. Unplug all receptacles from the front of the extension PCB (1). Fig. 65  2. Release the latch (circled in red) on the bottom of the extension PCB (1) with the help of a screwdriver and slide the extension PCB (1) upwards, out of its guides. Version 1.4 EN Momento 120 Service Manual...
  • Page 108 (a) Smart PCB connector (b) Water level detection connector for 2nd tank 5. Replace the extension PCB (2). Assembly tip • Make sure that the connector latch of the grounding wire is locked by slightly pulling it down. Momento 120 Service Manual Version 1.4 EN...

  • Page 109: Coffee Module Repairs

    1. Loosen the screw (TX20) on main PCB cover (1). 2. Release the latch (see detail) on main PCB cover (1) with a long enough flathead screwdriver. 3. Slide the main PCB cover (1) downwards and remove it. Version 1.4 EN Momento 120 Service Manual...
  • Page 110 Repair > Coffee Module Repairs Assembly tip Fig. 68  • Ensure that the 2 hooks at the bottom of the main PCB cover (1) are inserted from below into main PCB housing (2) before snapping the cover back in place. Momento 120 Service Manual Version 1.4 EN...

  • Page 111: Remove Head Base Plate

    1. Pull out the connector clip (2) from the hose adapter (3) with pointed pliers. 2. Pull off the hose (4) with hose adapter (3) from the valve (1). 3. Replace the O-ring (5) seated between valve (1) and hose adapter (3). Version 1.4 EN Momento 120 Service Manual...
  • Page 112 4. Unplug the MMI connectors (see detail) from the main PCB (3): (a) MMI connector (b) MMI power connector 5. Pull the MMI wires out of the wire saddles (2) up till but not including the cross beam (1). Momento 120 Service Manual Version 1.4 EN...
  • Page 113 8. Remove the head base plate (3) including the cross beams (1) by pulling it away on the coffee module handle (2). Assembly tips • Make sure that the cross beam (1) screws are countered with a square nut. • Always replace the O-ring seated between the valve and hose adapters. Version 1.4 EN Momento 120 Service Manual...

  • Page 114: Replace Outlet Led

    • Head base plate is removed → p. 111. Procedure 1. Open and remove the MMI cables sealing (1) by hand or a suitable tool. The sealing (1) is held by two latches and needs some force to remove it Momento 120 Service Manual Version 1.4 EN...
  • Page 115 Repair > Coffee Module Repairs Fig. 73  2. Unplug the outlet LED connector (a) from the MMI PCB (2). 3. Simply pull out and replace the outlet LED (1). Version 1.4 EN Momento 120 Service Manual...

  • Page 116: Replace Capsule Recognition

    • Head base plate is removed → p. 111. Procedure 1. Loosen 2 screws (TX20) on cross beams (3). 2. Detach the cross beams (3) and coffee module handle (2) together from the head base plate (1). Momento 120 Service Manual Version 1.4 EN...
  • Page 117 3. Unplug the capsule recognition wire (2) from the capsule recognition (1). 4. Release the latches on the side of the capsule recognition housing (1) with the help of a small flathead screwdriver (see detail). 5. Remove the capsule recognition (1) Version 1.4 EN Momento 120 Service Manual...

  • Page 118: Replace Mmi Assembly (Screen)

    • Head base plate is removed → p. 111. • Capsule recognition is removed → p. 116. Procedure 1. Loosen 4 screws (TX20) on head base plate (2). 2. Remove the front cover (1) from the head base plate (2). Momento 120 Service Manual Version 1.4 EN...
  • Page 119 Repair > Coffee Module Repairs Fig. 77  3. Loosen 4 screws (TX20) on the front cover (3) from the MMI housing (4). 4. Pull off the outlet (2) from the front cover (3). 5. Pull out the outlet LED (1). Version 1.4 EN Momento 120 Service Manual...
  • Page 120 Repair > Coffee Module Repairs Fig. 78  6. Release 2 latches (circled in red) from the outlet support (1). 7. Pull out the outlet support (1). Momento 120 Service Manual Version 1.4 EN...
  • Page 121 Repair > Coffee Module Repairs Fig. 79  8. Remove the MMI housing (2) from the front cover (1). Version 1.4 EN Momento 120 Service Manual...

  • Page 122: Replace Valve(S)

    5. Release the latch from the valve support (1) with a small flathead screwdriver or another suitable tool. 6. Remove the valve (2) by tilting it downwards. Assembly tip • Always replace the O-ring seated between a valve and a hose adapter. Momento 120 Service Manual Version 1.4 EN...
  • Page 123 Repair > Coffee Module Repairs Fig. 82  • Pay attention to the orientation when replacing a valve – use the flat terminals and this illustration as a guide. Version 1.4 EN Momento 120 Service Manual...

  • Page 124: Replace Thermoblock

    3. Pull off and discard the O-rings (2) between thermoblock (5) and hose adapters interchange them with (3). other clips from the 4. Release the valve (7) from thermoblock cover (6) with the help of a small flathead valves! screwdriver (see detail or refer to → p. 122). Momento 120 Service Manual Version 1.4 EN...
  • Page 125 7. Release the flat receptacle of the ground wire at the thermoblock (1, location circled in red). This kind of flat receptacle has a special connector latching. Press down the lever with flat nose pliers while pulling on it. Version 1.4 EN Momento 120 Service Manual...
  • Page 126 • Make sure that the cross beam screws are countered with a square nut. • Only use the black coloured connector clips for the hose adapters which connect directly to the thermoblock (2). • Always replace the O-ring seated between the thermoblock (2) and hose adapters. Momento 120 Service Manual Version 1.4 EN...

  • Page 127: Replace Flowmeter

    3. Insert the blade of a small flathead screwdriver below the flowmeter (2) and release its locking pin. Assembly tips • Be cautious to not interchange the pressure hoses (3,4) – risk of malfunction. • Make sure the connector (1) is plugged correctly on all 3 pins. Version 1.4 EN Momento 120 Service Manual...

  • Page 128: Replace Pump

    • Main PCB cover is removed → p. 109. Procedure 1. Loosen 1 screw (TX20) on chassis BU (1). 2. Unplug the 3 wires of the pump from the main PCB (2): (a) Capsule container detection connector (b) Pump control receptacle (c) Pump line receptacle Momento 120 Service Manual Version 1.4 EN...
  • Page 129 Assembly tips • Always replace the O-ring seated between pump connector and pressure hose. • Do not twist or fold the pressure hose to the flow meter – water must be able to flow free of resistance. Version 1.4 EN Momento 120 Service Manual...

  • Page 130: Replace Main Pcb

    1. Unplug all connectors and receptacles from the main PCB (2). 2. Pull on the main PCB housing (1) until you hear it click. 3. Lift the main PCB (2) and housing (1) out of its slots (circled in red). Momento 120 Service Manual Version 1.4 EN...

  • Page 131: Replace Power Supply

    Repair > Coffee Module Repairs 11.11.11 Replace Power Supply Fig. 90  1. Unscrew all flat receptacles on the power supply (2). 2. Loosen 2 screws (TX10) on chassis BU (1). 3. Remove the power supply (2). Version 1.4 EN Momento 120 Service Manual...

  • Page 132: Replace Brewing Unit (Maint. Kit)

    1. Release the latch of the worm gear support (1) and remove the support (1). Fig. 92  2. Slightly pull out the worm gear (3) to be able to freely move the brewing units’ (2) front assembly (1). Momento 120 Service Manual Version 1.4 EN...
  • Page 133 4. Re-insert the worm gear and worm gear support. Fig. 94  5. Unclip the steam hood (2) and remove it from the brewing unit (4). 6. Detach the C-clip (1) from the front axle (3) and remove the front axle (3). Version 1.4 EN Momento 120 Service Manual...
  • Page 134 7. With the help of a small screwdriver, release the latch and unplug the coil connec- tor (2, see detail). 8. Loosen 4 screws (crosshead) on the front assembly (1). These can be disposed of. Fig. 96  9. Remove and dispose of the front assembly (1). Momento 120 Service Manual Version 1.4 EN...
  • Page 135 14. Insert a new piston (2) after greasing all its seals (Molykote 111). Fig. 98  15. Insert a new front assembly (1) and tighten the 4 screws (crosshead). 16. Pull the coil connector (2) through the cable guide (red circle) and plug it in (see detail). Version 1.4 EN Momento 120 Service Manual...
  • Page 136 17. Insert the front axle (3) and attach the C-clip (1). 18. Insert the steam hood (2). Fig. 100  19. To finish the maintenance of the brewing unit (1), grease the worm gear (2) of the motor (see detail) with Elkalub GLS 993 H1. Momento 120 Service Manual Version 1.4 EN...

  • Page 137: Replace Brewing Unit (Mhbu)

    (a) Brewing unit (4) to thermoblock (1) (b) Brewing unit (4) to top valve (c) Brewing unit (4) to bottom valve (d) Bottom valve to pump (5) 3. Discard the O-rings (2) from the detached connectors. Version 1.4 EN Momento 120 Service Manual...
  • Page 138 Press down the lever with flat nose pliers while pulling on it. 5. Unplug 2 connectors (see detail) from the main PCB (2): (a) MHBU connector (b) MHBU power connector 6. Pull the wires out of guides and wire saddles. Momento 120 Service Manual Version 1.4 EN...
  • Page 139 • Always replace the O-ring seated between the thermoblock and hose adapter. • Always replace the O-rings seated between valves and hose adapters. • Always replace the O-ring seated between pump connector and pressure hose. Version 1.4 EN Momento 120 Service Manual...

  • Page 140: Milk Module Repairs (General)

    • Perform an emptying of the machine → p. 34. • If the module is blocked and this option is not available, wait at least 1h before opening the module. Caution: The components are still hot and can cause burns. Momento 120 Service Manual Version 1.4 EN...
  • Page 141 No repair work must be performed on the fridge! (expect the fan → p. 146) When doing repairs, take special care to not push or bend any of the copper pipes around the compressor of the fridge. Fig. 105  Version 1.4 EN Momento 120 Service Manual...

  • Page 142: Removing Fep Tubes

    2. Pull out or insert a tube with special tube pliers (2) or by hand. 3. Release the fastener’s head (1). When inserting a tube, two noticeable resistances must be overcome. Always ensure a firm connection! The tubes must never get kinked or clamped between housing parts. Momento 120 Service Manual Version 1.4 EN...

  • Page 143: Replacing Valve Membranes (Pm)

    1. Loosen 2 screws (4, hexagon M2.5) to release the valve body (1) from the mag- netic coil (3). 2. Remove the membrane (2) from the magnetic coil (3). 3. Clean stains and impurities in the valve body (1) and replace the membrane (2). Version 1.4 EN Momento 120 Service Manual...

  • Page 144: Replace Outlet Valve

    1. Loosen 2 screws (crosshead) to release the outlet valve (1). Fig. 109  2. Remove both tubes (A+B) from the outlet valve (1). 3. Unplug the 2 electrical connectors (2) from the RF-Box on the outlet valve (1). Momento 120 Service Manual Version 1.4 EN...
  • Page 145 Repair > Milk Module Repairs (General) Assembly tip Fig. 110  • Route the tubes and wires according to the image above. Version 1.4 EN Momento 120 Service Manual...

  • Page 146: Replace Fridge Fan

    2. Pull out one tube on the outlet valve (4) and one tube from the RF-Box (3), see details. 3. Pull the tubes out of their guides. 4. Loosen 2 screws (crosshead) on the fan cover (1). Momento 120 Service Manual Version 1.4 EN...
  • Page 147 6. Pull away the outer part of the fan cover (3). 7. Slide the fan (2) out of the remaining fan cover part (1) while pulling the fan wire through the hole in it (circled in red). Version 1.4 EN Momento 120 Service Manual...

  • Page 148: Replace Control Board

    (2) outwards while pulling on the control board (1). 4. Pull the wiring harness out of the guides on the water protection (2). 5. Pull the control board (1) and water protection clamp (3) out of the water protec- tion (2). Momento 120 Service Manual Version 1.4 EN...
  • Page 149 Fig. 114  6. Unplug all connectors on the control board (1) except the one for the micro switches (2, connector circled in red). Assembly tip • All connectors are keyed and cannot be inserted wrong: Fig. 115  Version 1.4 EN Momento 120 Service Manual...

  • Page 150: Replace Micro Switches / Water Protection Clamp

    2. Pull away the water protection clamp (1) with the micro switches (2) from the control board (3) by hand. 3. Lever the micro switches (2) out of the water protection clamp (1) by hand or with the help of a small flathead screwdriver (see detail). Momento 120 Service Manual Version 1.4 EN...

  • Page 151: Replace Chassis / Inlet Geometry Handle

    Procedure 1. Lay the fridge assembly (1) on its side as shown. 2. Pull the chassis (2) upwards and away from the fridge assembly (1) while releasing the latch (circled in red) to remove the chassis (2). Version 1.4 EN Momento 120 Service Manual...
  • Page 152 Fig. 118  3. Release the two latches from the inlet geometry handle (2, circled in red) by hand or with the help of a flathead screwdriver. 4. Remove the inlet geometry handle (2) from the chassis (1). Momento 120 Service Manual Version 1.4 EN...

  • Page 153: Replace Steam Valve Plunger And Gasket (Pm)

    1. Unplug the two electrical connectors from the magnetic coil (2). 2. Loosen the screw nut (3) with a fork wrench no. 11 on the magnetic coil (2). 3. Pull off the magnetic coil (2) from the steam valve (1). Version 1.4 EN Momento 120 Service Manual...
  • Page 154 • Avoid cutting a new thread with the screws when remounting the metal holding plate. • Alternate between the screws on the metal holding plate (4) when turning them in again to ensure that the holding plate is mounted flush on the valve (1). Momento 120 Service Manual Version 1.4 EN...

  • Page 155: Replace Water Coupling

    1. Remove the FEP tube (A) from the water coupling (1). 2. Remove the silicone tube (B) including the hose fitting from the water coupling (1). 3. Remove the water coupling (1) from the hydraulic unit. Fig. 123  Version 1.4 EN Momento 120 Service Manual...

  • Page 156: Replace Water Coupling Check Valve (Pm)

    1. Turn the water coupling check valve (2) by 90° with a fork wrench no. 13. 2. Pull the water coupling check valve out of the water coupling assembly (1) together with its O-ring (3). Always replace the O-ring together with the check valve Momento 120 Service Manual Version 1.4 EN...

  • Page 157: Milk Module Repairs (Plastic Component Support)

    → p. 142 Fig. 125  Prerequisites • Electrical connectors are removed from the outlet valve → p. 144. Procedure 1. Unplug all of the electrical connectors and tubes (see details) on the hydraulic unit (1) coming from the RF-Box. Version 1.4 EN Momento 120 Service Manual...
  • Page 158 2. Open the milk module door (3). 3. Release and push in the latch (see detail). 4. Pull the RF-Box (2) out of the module and lead the wires and tubes through the hole in the back of the fridge (1). Momento 120 Service Manual Version 1.4 EN...
  • Page 159 Repair > Milk Module Repairs (Plastic Component Support) Assembly tip Fig. 127  • Route the tubes and wires according to the images above. Version 1.4 EN Momento 120 Service Manual...

  • Page 160: Detach Hydraulic Unit And Pcb Assembly

    2. Pull out the tube from the Y-connector (1, see detail). 3. Pull out the tube from the outlet valve (4, see detail). 4. Pull out the drain outlet (2, see detail) by hand. 5. Loosen 2 screws (crosshead) from the hydraulic unit (3). Momento 120 Service Manual Version 1.4 EN...
  • Page 161 6. Slightly lift up the hydraulic unit (2) by hand until you can feel it is releasing. 7. Pull the hydraulic unit (2) away from the fridge assembly (1) while releasing stuck wires and tubes if necessary, until it is possible to lay it down besides the fridge assembly (1). Version 1.4 EN Momento 120 Service Manual...
  • Page 162 10. Slide out the PCB assembly (1). Fig. 131  11. Unplug the connectors to the compressor (2), reed sensor (3) and the ground wires (1). 12. The hydraulic unit and PCB assembly can now be separated from the fridge assembly. Momento 120 Service Manual Version 1.4 EN...
  • Page 163 • If you are having problems with the alignment of the holes for the two screws, try to screw in the bottom one first. take special care to not push or bend any of the copper pipes around the compressor of the fridge! Version 1.4 EN Momento 120 Service Manual...

  • Page 164: Replace Pressure Sensor

    2. Cut the cable tie (2) and unplug the connector of the pressure sensor (1). 3. Slide the pressure sensor (1) out of the holding plate (3). Assembly tip • Don’t forget to fix the pressure sensor’s connector with a cable tie. Momento 120 Service Manual Version 1.4 EN...

  • Page 165: Replace Air Valve

    1. Remove the FEP tube (A). 2. Unplug the air valve (1) electronics connector (2). 3. Turn the air valve (1) clockwise to loosen the fixation (C). 4. Slide the air valve (1) out of the holding plate (3). Version 1.4 EN Momento 120 Service Manual...

  • Page 166: Replace Steam Pressure Regulator

    It is possible to replace the steam Procedure pressure regulator without detaching the 1. Remove the FEP tubes (A and B) from the steam pressure regulator (1). hydraulic unit first. 2. Remove the steam pressure regulator (1) Momento 120 Service Manual Version 1.4 EN...

  • Page 167: Replace Emptying Valve

    2. Cut the cable tie (c) and remove the emptying valve (2) from the boiler (1) in the same way as FEP tubes. 3. Remove the FEP tube (A) from the emptying valve (2). 4. Remove the emptying valve (2). Version 1.4 EN Momento 120 Service Manual...

  • Page 168: Replace Ntc Fluid Line

    4. Pull out the tube (B) from the boiler (4) in the same way as FEP tubes. 5. Pull the NTC assembly (5) out far enough to be able to remove the FEP tube (C). 6. Remove the NTC assembly (5) together with its connector (a). Momento 120 Service Manual Version 1.4 EN...

  • Page 169: Replace Water Pump

    2. Remove the tube (A) of the water pump (2) from the boiler (1) in the same way as an FEP tube. 3. Remove the tube (B) 4. Remove tube (C) from the water coupling (3) in the same way as FEP tubes. 5. Pull the water pump (2) out of its support (4). Version 1.4 EN Momento 120 Service Manual...

  • Page 170: Replace Steam Heating Chamber

    3. Pull the steam heating chamber (2) out of its support. 4. Remove the FEP tube (C) from the steam valve (4, see photo). 5. Remove the steam heating chamber (2) together with the FEP tube (C). Momento 120 Service Manual Version 1.4 EN...

  • Page 171: Replace Steam Valve

    • Steam pressure regulator is removed → p. 166. Procedure 1. Unplug the two electrical connectors (a+b) from the steam valve (1). 2. Pull the steam valve (1) out of the two holding clamps. 3. Remove the FEP tube (A) from the steam valve (1). Version 1.4 EN Momento 120 Service Manual...

  • Page 172: Remove Hydraulic Components Support

    • Tube of the NTC fluid line is removed from the steam chamber → p. 168. Procedure 1. Push the tube (2) slightly to the side to get access to the screw. 2. Loosen the screw (crosshead) on the back of the hydraulic unit (1). Momento 120 Service Manual Version 1.4 EN...
  • Page 173 7. Unplug the connector (e) from the pressure sensor (1). 8. Unplug the air valve electronics connector (f). 9. Unplug the connectors (g+h) from the steam valve (3). 10. Unplug the connector (i) from the milk pump (4). Version 1.4 EN Momento 120 Service Manual...
  • Page 174 Repair > Milk Module Repairs (Plastic Component Support) Fig. 144  11. Loosen two latches by hand (circled in red). 12. Lift up and remove the hydraulic components support (1). Momento 120 Service Manual Version 1.4 EN...

  • Page 175: Replace Boiler

    1. Remove the following electrical connectors from the boiler (1): (a) Level detector (light grey) (b) Boiler heating (brown) (c) Boiler heating (blue) (d) 2 grounding wires (black (top), green-yellow (bottom)) 2. Remove the FEP tube (A) from the top of the boiler (1). Version 1.4 EN Momento 120 Service Manual...
  • Page 176 Repair > Milk Module Repairs (Plastic Component Support) Fig. 146  3. Remove the emptying valve (1) → p. 167. 4. Remove the tube (A) coming from the water pump. 5. Disconnect the boiler NTC connector (e). 6. Remove the boiler from the component support. Momento 120 Service Manual Version 1.4 EN...

  • Page 177: Replace Milk Pump

    2. Remove the FEP tube (B) of the steam heating chamber (2). 3. Remove the FEP tube (C) coming from the air valve (3). 4. Pull the milk pump (4) out of the hydraulic components support (5). Version 1.4 EN Momento 120 Service Manual...
  • Page 178 6. Remove the valve nozzle (2) from the valve (1) if needed. If the milk pump is replaced it needs to be calibrated. this can be done via the technician menu after reassembly of the machine → p. 41. Momento 120 Service Manual Version 1.4 EN...

  • Page 179: Milk Module Repairs (Metal Component Support)

    → p. 142 Fig. 149  Prerequisites • Electrical connectors are removed from the outlet valve → p. 144. Procedure 1. Unplug all of the electrical connectors and tubes (see details) on the hydraulic unit (1) coming from the RF-Box. Version 1.4 EN Momento 120 Service Manual...
  • Page 180 2. Open the milk module door (3). 3. Release and push in the latch (see detail). 4. Pull the RF-Box (2) out of the module and lead the wires and tubes through the hole in the back of the fridge (1). Momento 120 Service Manual Version 1.4 EN...
  • Page 181 Repair > Milk Module Repairs (Metal Component Support) Assembly tip Fig. 151  • Route the tubes and wires according to the images above. Version 1.4 EN Momento 120 Service Manual...

  • Page 182: Detach Hydraulic Unit And Pcb Assembly

    2. Pull out the tube from the Y-connector (1, see detail). 3. Pull out the tube from the outlet valve (4, see detail). 4. Pull out the drain outlet (2, see detail) by hand. 5. Loosen 2 screws (crosshead) from the hydraulic unit (3). Momento 120 Service Manual Version 1.4 EN...
  • Page 183 6. Slightly lift up the hydraulic unit (2) by hand until you can feel it is releasing. 7. Pull the hydraulic unit (2) away from the fridge assembly (1) while releasing stuck wires and tubes if necessary, until it is possible to lay it down besides the fridge assembly (1). Version 1.4 EN Momento 120 Service Manual...
  • Page 184 10. Slide out the PCB assembly (1). Fig. 155  11. Unplug the connectors to the compressor (2), reed sensor (3) and the ground wires (1). 12. The hydraulic unit and PCB assembly can now be separated from the fridge assembly. Momento 120 Service Manual Version 1.4 EN...
  • Page 185 • If you are having problems with the alignment of the holes for the two screws, try to screw in the bottom one first. take special care to not push or bend any of the copper pipes around the compressor of the fridge! Version 1.4 EN Momento 120 Service Manual...

  • Page 186: Replace Pressure Sensor

    3. Loosen the screw nut (5) of the pressure sensor (1) and slide the pressure sensor (1) out of the holding plate. 4. Cut the cable tie (2) and unplug the connector of the pressure sensor (1). Assembly tip • Don’t forget to fix the pressure sensor’s connector with a cable tie. Momento 120 Service Manual Version 1.4 EN...

  • Page 187: Replace Air Valve

    2. Unplug the air valve (1) electronics connector (2). 3. Remove the cable tie (3) 4. Turn the air valve (1) clockwise to loosen the fixation (C). 5. Slide the air valve (1) out of the holding plate (4). Version 1.4 EN Momento 120 Service Manual...

  • Page 188: Replace Steam Pressure Regulator

    It is possible to replace the steam Procedure pressure regulator without detaching the 1. Remove the FEP tubes (A and B) from the steam pressure regulator (1). hydraulic unit first. 2. Remove the steam pressure regulator (1) Momento 120 Service Manual Version 1.4 EN...

  • Page 189: Replace Emptying Valve

    1. Unplug the two electrical connectors (a+b) from the emptying valve (2). 2. Remove the emptying valve (2) from the boiler (1) in the same way as FEP tubes. 3. Remove the FEP tube (A) from the emptying valve (2). 4. Remove the emptying valve (2) Version 1.4 EN Momento 120 Service Manual...

  • Page 190: Replace Ntc Fluid Line

    1. Remove the FEP tube (A) from the steam heating chamber (2). 2. Unplug the connector (a, circled in red) of the NTC (1). Fig. 162  3. Pull the NTC assembly out far enough to be able to remove the FEP tube (B). Momento 120 Service Manual Version 1.4 EN...

  • Page 191: Replace Water Pump

    This component and connected pipes are partially under pressure (→ p. 15), follow the instructions on page 140 in advance! Prerequisites • Emptying valve is removed → p. 189. Procedure 1. Remove the 3 electrical connectors (a+b+c) from the water pump. Version 1.4 EN Momento 120 Service Manual...
  • Page 192 3. Loosen the 2 clamps holding the water pump (2) in place (see detail). 4. Remove the tube (B) from the water pump (2) and tube (C) from the water cou- pling in the same way as FEP tubes. Momento 120 Service Manual Version 1.4 EN...

  • Page 193: Replace Boiler

    1. Remove the following electrical connectors from the boiler (1): (a) Level detector (light grey) (b) Boiler heating (brown) (c) Boiler heating (blue) (d) 2 grounding wires (black (top), green-yellow (bottom)) 2. Remove the FEP tube (A) from the top of the boiler (1). Version 1.4 EN Momento 120 Service Manual...
  • Page 194 4. Remove the tube (3) coming from the water pump (5). 5. Remove the emptying valve (4) from the boiler (1) in the same way as FEP tubes. 6. Disconnect the boiler NTC connector (e). 7. Pull/push the boiler (1) out of the holding plate (2). Momento 120 Service Manual Version 1.4 EN...

  • Page 195: Replace Steam Valve

    • Boiler is removed → p. 193. Procedure 1. Loosen 2 screws (crosshead).from the steam valve (1). 2. Remove the FEP tube (A) from the steam valve (1). 3. Unplug the two electrical connectors (a+b) from the steam valve (1). Version 1.4 EN Momento 120 Service Manual...

  • Page 196: Replace Steam Heating Chamber

    1. Remove the FEP tubes (A+B) on both sides of the steam heating chamber (2). 2. Loosen 2 screws (crosshead, circled in red) from the steam heating chamber (2). 3. Pull the steam heating chamber (2) out of the holding plate (1) together with the FEP tube (C). Momento 120 Service Manual Version 1.4 EN...

  • Page 197: Replace Milk Pump

    3. Unplug the connector (circled in red, see detail) from the pump (4). 4. Loosen 2 screws (crosshead) on the holding plate (3) to release the milk pump (4). 5. Pull the milk pump (4) out of the holding plate (3). Version 1.4 EN Momento 120 Service Manual...
  • Page 198 7. Remove the valve nozzle (4) from the valve (3) if needed. 8. Unclip the pump holding plate (1). If the milk pump is replaced it needs to be calibrated. this can be done via the technician menu after reassembly of the machine → p. 41. Momento 120 Service Manual Version 1.4 EN...
  • Page 199 Repair > Milk Module Repairs (Metal Component Support) Assembly tip Fig. 171  • Route the tube coming from the NTC fluid line between the pump and the pump holding plate during insertion, to make fitting the pump easier. Version 1.4 EN Momento 120 Service Manual...

  • Page 200: Wiring Diagrams

    Wiring Diagrams > Momento 120/200 Chassis 12 W I R I N G D I A G R A M S 12.1 Momento 120/200 Chassis Momento 120 Service Manual Version 1.4 EN...

  • Page 201: Coffee Module

    Wiring Diagrams > Coffee Module 12.2 Coffee Module XH-1x3 VH-1x3 VH-1x2 PH-1x4 XH-1x2 PH-1x3 Version 1.4 EN Momento 120 Service Manual...

  • Page 202: Milk Module

    Wiring Diagrams > Milk Module 12.3 Milk Module Momento 120 Service Manual Version 1.4 EN...

  • Page 203: Pe Distribution

    Wiring Diagrams > PE Distribution 12.4 PE Distribution AWG16 AWG16 Version 1.4 EN Momento 120 Service Manual...

  • Page 204: Final Tests

    Final tests > PE Distribution 13 F I n A L t e S t S A Nespresso technician with special training and test equipment is required for test- ing the coffee machine after the initial installation at the customer’s side.

  • Page 205: Protective Earth (Pe) Continuity Test

    Fig. 172  1. Cup plate at the rear of the coffee machine: Touch the aluminium rib at the mid- dle of the plate’s underside with the test probe. 2. Touch the steam boiler through the testing hole. Version 1.4 EN Momento 120 Service Manual...
  • Page 206 • Remove the coffee and milk module. Check the ground wiring and ground termi- nals in the main housing and coffee module. • Perform further, detailed measurements with the electric safety tester. Localise and rectify any faults occurring. • Check/replace the power cord. Momento 120 Service Manual Version 1.4 EN...

  • Page 207: Protective Insulation Test

    • Switch on the electric safety tester and start the protective insulation test. • Touch the following test points with a test probe and a test voltage of 500 V DC and check if the measured insulation resistance is above 2 MΩ: Version 1.4 EN Momento 120 Service Manual...
  • Page 208 3. Touch the bottom plate with the test probe. Fig. 177  4. At the coffee module: Touch the front cover with the test probe 5. Insert the test probe into the test hole which is located in the capsule ejection opening. Momento 120 Service Manual Version 1.4 EN...

  • Page 209: Functional Test Of The Milk Module

    1. Carry out the calibration of the milk pump via the technician menu → p. 41. 2. Adjust the foam quality including the test products → p. 28. 3. Carry out a product quality check of hot milk and hot foam (temperature, volume, quality). 4. Perform a cleaning cycle → p. 44. Version 1.4 EN Momento 120 Service Manual...

  • Page 210: Milk Module Spare Part Drawings

    14 M I L K M O D U L E S PA R E PA R T D R A W I N G S 14.1 Milk Module 0128470 0128457 0128806 0128837 PCB and water protec�on 0128798 RF-Box Hydraulic module 0128841 0128867 Momento 120 Service Manual Version 1.4 EN...

  • Page 211: Hydraulic Module

    0128862 0128879 0128696 0128849 0128824 0128811 0128852 0128808 0128822 0128493 0128803 0128807 0128857 0128839 0128809 0128703 0128862 0128695 0128831 0128855 0128836 0128691 0128845 0128494 0071881 0128835 0128851 0128846 0128698 0128689 0128819 0128818 0128838 0128850 0128817 0128834 0128842 Version 1.4 EN Momento 120 Service Manual...

  • Page 212: Rf-Box

    Milk Module Spare Part Drawings > RF-Box 14.3 RF-Box 0128828 0128829 0128810 0128488 0128683 0128480 0128826 0128814 0128812 0128815 Momento 120 Service Manual Version 1.4 EN...

  • Page 213: Pcb And Water Protection

    Milk Module Spare Part Drawings > PCB and Water Protection 14.4 PCB and Water Protection 0128827 0128686 0128823 0128485 Version 1.4 EN Momento 120 Service Manual...
  • Page 214 S Momento 120 Service Manual Version 1.4 EN...

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