Philips Saeco Exprelia Series, Service Manual

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EXPRELIA 04 OPERATING LOGIC
Saeco International Group Rev. 00 / June 2010 Page / 11 03
STEAM
VENTURI
PIPE
CLEAN / RINSE
MILK IN
CARAFE
AIR
STEAM
VENTURI
PIPE
FROTHED HOT MILK
(CAPPUCCINO)
MILK FROM
CARAFE
STEAM
VENTURI
PIPE
HOT MILK
MILK FROM
CARAFE
AIR or STEAM
STEAM
HOT WATER - STEAM
to steam pipe
DC3
DC4
DC2
DC5
DC1
PRESSURE RELIEF VALVE
Clean
(steam)
Air
Milk-based
beverages
(steam)
hot water /
steam
CARAFE ATTACHMENT
DC1 = pressure relief valve assembly
DC2 = steam valve
DC3 = air valve
DC4 = clean valve (steam)
DC5 = hot water/steam valve
Functional method for the production of milk-based beverages and circuit cleaning
When the solenoid valves open and let air or hot water/steam through, the following situations
occur:
DC3+DC2 • STEAM + AIR = Frothing and heating of frothed milk
DC2 • STEAM FROM CENTRAL HOLE = Heating of non-frothed milk
DC4 • STEAM FROM LOWER HOLE = Cleaning of milk circuits