Synesso Espresso Machine Technical Manual page 17

Major Components of the Water Inlet System
Cyncra prior to 2011
Brew gauge
Sight Glass
Hot water
valve
Drain tube
from brew
tanks
Drain box
Mix valve
adjuster
Water Inlet Components:
Brew Gauge:
The brew gauge reflects pressure in the brewing system. On a standard Synesso™, there is
one gauge for the entire brewing system; on a Hydra, each brew tank has its own brew gauge.
The gauge normally moves between 3-5 bar (resting pressure) to 9 bar (brewing pressure)
and up to 12 bar (expansion pressure) at which point the expansion valve opens and releases
the excess pressure.
Brew Tank Check Valve:
Check valves prevent water from going the wrong way in the hydraulic system. Water flow
should only go one direction and the check valve ensures that pressuized water from inside
the tanks cannot overwhelm the incoming water pressure and go backwards.
Coffee Inlet Fill Line:(Single inlet and Hydra machines would have this line only )
Supplies the brew tanks with water, passing first through the heat exchangers.
Technical Manual
Expansion
Cold water
valve
valve
Vacuum breaker
Brew Tanks
Check valve
Coffee
inlet hose
(Fill Line)
17
Pressure Relief
Valve (under hose)
Heat Exchanger
Tubes
Steam inlet
check valve
Steam tank
water inlet
valve
Steam
tank fill
hose
Drain hose