Philips Saeco Exprelia Series, Service Manual

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EXPRELIA 04 OPERATING LOGIC
Saeco International Group Rev. 00 / June 2010 Page / 11
4.3. Multi-way valve
W
ater entering
from the boiler
Drain to drip tray
Functions:
Safety valve : functions as a safety valve by opening towards the drain in the event that the pressure rises above
16-19 bar
Filling the circuit : the solenoid valve opens (drain position) and the pump is activated, automatically re fi lling the
circuit by expelling the air in the pipe
Unit discharge : before the unit descends it opens brie fl y, discharging the pressure created to prevent spraying and
making the pad drier
Coffee beverage : when a coffee beverage is selected, the pump is charged brie fl y during the grinding process and
the valve assumes the drain position in order to fi ll the pipes with hot water.
04
Needle
Drain