Pressure Control, Overpressure And Anti-Vacuum Valve - Nespresso Momento 120 Service Manual

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Milk Module - Hydraulic Functions
9.6 Pressure Control, Overpressure and Anti-Vacuum
Valve
Pressure sensor and safety combination valve communicate with the vapour phase of
the boiler.
If the appliance is switched off and the boiler cools down, the anti-vacuum valve
integrated in the combination valve prevents a vacuum by entering air into the boiler
(blue path).
In case of a malfunction of the heating control, the boiler may overheat, resulting
in an increase in pressure. In order to limit this pressure rise, the overpressure
valve, which is also integrated in the combination valve, opens. The escaping steam
(red path)
is led through the drain into the drip tray.
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.
Momento 120 Service Manual
Drip tray
(orange path). The
Machine
interior
Fig. 28
Version 1.4 EN