Synesso Espresso Machine Technical Manual page 16

Water to
steam tank
Water to
coffee
tanks
Water in
Pump configurations:
Until serial number 356, Synesso™s had
a single inlet configuration as the stan-
dard. After 356, the dual inlet configuration
is the standard. Hydras have a separate
pump and motor per group, therefore all
Hydras come equipped with single inlet
style pumps.
Technical Manual
Pump and Motor:
Synesso™ uses a Fluid-o-tec rotary
vane pump which boosts incoming water
pressure to 9 bar when the motor is acti-
vated. Pressure can be adjusted by loosen-
ing the nut on the right side fitting and then
turning the adjustment screw clockwise
(increasing pressure) or counter-clockwise
(decreasing pressure).
Water Inlet control valves:
Serial numbers 1-340 feature the Skinner-
style valves shown in the upper part of the
picture on the left. These were replaced on
serial number 341 onwards with the Parker
ZB09 for ease of repair or replacement.
Both valve styles feature electronic coils
which, when energized, move a piston
which allows water flow through the valve.
When deactivated, the piston's presence in
the valve stops the flow of water.
The picture on the next page shows the
steam tank autofill configuration. All 3 of the
water control valves are now Parker ZB09.
Upgrade kits are available through Synes-
16