Technical Manual 16
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 tting and then
turning the adjustment screw clockwise
(increasing pressure) or counter-clockwise
(decreasing pressure).
Water in
Water to
steam tank
Water to
coffee
tanks
Pump congurations:
Until serial number 356, Synesso™s had
a single inlet conguration as the stan-
dard. After 356, the dual inlet conguration
is the standard. Hydras have a separate
pump and motor per group, therefore all
Hydras come equipped with single inlet
style pumps.
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 ow through the valve.
When deactivated, the piston’s presence in
the valve stops the ow of water.
The picture on the next page shows the
steam tank autoll conguration. All 3 of the
water control valves are now Parker ZB09.
Upgrade kits are available through Synes-
HYDRAULIC SYSTEM
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