Nespresso Momento 120 Service Manual page 40

MMI Menus > Technician Menu
expected Sensor Values
If the sensor values indicated on the screen differ from what is shown in this table, a hardware issue of the sen-
sor might be the root cause.
Value
Steam pressure
Boiler temperature
NTC in fluid line
Fridge temperature
Milk temperature
Component Action and Feedback
Risk of damage!
Only activate components via the diagnostics if you really need to and are knowledgeable about the
risks!
• Falsely activated components can lead to milk in unwanted locations in the hydraulic unit or
have other unwanted effects.
• Activating a component for too long can damage a component.
Component
Source valve
Suction nozzle valve
Air valve
Steam valve
Outlet valve
Cleaning valve
Emptying valve
Water pump
Milk pump
Fan
Heater in steam boiler
Compressor
40 Momento 120 Service Manual
Min Max
0.0 bar 4.5 bar
0.0 °C 150.0 °C
0.0 °C 130.0 °C
2.0 °C 85.0 °C
0.4 °C 83.4 °C
Action by Button
Activate/deactivate valve switching
Activate/deactivate valve switching
Activate/deactivate valve switching
Activate/deactivate valve switching
Activate/deactivate valve switching
Activate/deactivate valve switching
Activate/deactivate valve switching
Activate/deactivate pump running
Activate 80% PMW/deactivate pump running Sound of pump motor, changing fluid line tem-
Activate/deactivate fan running
Activate/deactivate heating
Activate/deactivate compressor running
Comment
Operating pressure: 2.6 bar – 3.2 bar
Over pressure valve opening pressure: 3.5 bar
Min: Depends on the water temperature with which the boiler was
filled.
Max: Overpressure, exceeding 3.5 bar.
Min: Depends on the fluid which is currently pumped and if steam is
involved or not.
Max: If only steam is pushed without fluid.
Max: During cleaning procedure.
Normal operating temperature: 2.0 °C – 5.0 °C
Hint: If the sensor shows exactly -20 °C, this indicates an unplugged
sensor connector.
Milk temperature is calculated based on the measured fridge tem-
perature → Correcting value is -1.6 °C
Feedback to tech
Click sound
Click sound
No feedback to technician
Click sound, steam in drain (if steam boiler
ready)
Click sound
Click sound
Click sound, steam water in fridge (if steam
boiler ready)
Sound of pump motor, switching of level
sensor if water level was below threshold,
increase of pressure in boiler
perature, water is dispensed in the drain
Sound of fan
Increasing steam pressure and boiler
temperature
Sound of compressor
Version 1.4 EN