Sbs - Philips Saeco Exprelia Series Service Manual

EXPRELIA

4.10. SBS

Saeco International Group
SBS - Saeco Brewing System - Principle
Controlling the flow speed, which influences
the contact time between the coffee and
water, changes the extraction and therefore
the taste intensity and strength of the coffee.
• Slower flow: strong extraction
• Fast flow: lighter extraction
SBS / dispensing valve
Turning the SBS control knob leads to brewing
taking place inside the brewing unit, where
the flow speed is adjusted using a cream
valve.
Cream valve control
Fast flow (slight extraction)
If the SBS valve is open, the coffee flows
more easily because the pressure is lower
and the membrane, with the support of
the spring, remains almost in its original
position.
The control needle does not close off the
opening and the flow is not diminished.
Cream valve control
Slow flow (strong extraction)
The coffee can only be dispensed slowly with
a closed SBS valve – a pressure is created
which forces the membrane to the side,
pushing it against the spring force.
In the next stage, the valve needle closes off
the opening, thus reducing the flow.
Rev. 00 / June 2010
04 OPERATING LOGIC
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