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Version 3.3 / November 2016
3.4.14.2 Espresso group (for ROSSO)
The espresso group is used to make coffee using ground beans (see figure 58).
1. Hot water inlet from the boiler
2. Ground coffee feed into the coffee maker
3. Reducer-motor of espresso group
4. Path for discharging coffee waste
5. Output pipe for ready drink
6. Fixture for removal/installation of espresso group
Description of espresso group’s functioning:
1. Initially the espresso group is in open position
2. The ground coffee enters the inlet (2), after which the reducer-motor closes the espresso group, press-
ing the coffee powder.
3. Hot water, from the boiler, is passed through the pressed coffee
4. After passing the set amount of water, the reducer-motor opens up the espresso group, emptying the
coffee waste through the waste path (4) into the waste container.
5. The hot water, which passes through the pressed coffee, further goes through the dispensing nozzle
into the cup.
Figure 58
To service the boiler, which is located behind the espresso group, it is necessary to remove the whole
group. The group can be removed as shown in figures 59…62.
