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Version 3.3 / November 2016
b. Boiler feed pump
1
2
Figure 52
The boiler heats the water to a certain temperature, which is set
in the configuration menu, for the preparation of hot drinks (see
figure 52).
The boiler is fitted with a feed pump, which maintains perma
-
nent pressure (see figure 52 position 2) and (see figure 53).
Figure 53
c. The boiler’s electromagnetic valves
During the preparation of drinks, hot water enters through one of the two electromagnetic valves, which
are located on top of the boiler (see figure 54), depending on the selection (either to espresso group or to
the selector and then to the relevant mixer.
d. Boiler
The boiler is used to heat the water to a certain tem-
perature as is set in the machine’s configurations.
In the ROSSO model the boiler is located under the
protective cover behind the espresso group (see figure
52 position 1 and figure 54).
To access the boiler, please remove the espresso
group (see section 3.4.15).
In ROSSO INSTANT model we only use one electro-
magnetic valve of the boiler (the other one is plugged).
The surface of the boiler can be very hot.
Before starting any routine service or cleaning, it is
necessary to cool down the boiler and to empty it (see
section 3.6.3).
The water from the float chamber enters the boiler with
the help of the boiler feed pump.
From the boiler the water either goes to the selector or
to the coffee group.
Figure 54
Electromagnetic
To coffee group
and selector
Pump swap
Boiler
ATTENTION: It is strictly prohibited to use water, which does not conform to the given stand-
ards of hardness and calcium content (see the vending machine’s technical features). This
can cause rapid deterioration and failure of the machine’s electromagnetic valves!
