User manual for NERO / NERO INSTANT
Page 21
Version 3.2 / December 2017
3.5.10 Espresso group (for NERO)
The espresso group is used to make coffee using ground beans (see figure 25).
The working mechanism of the espresso group:
1. Initially the espresso group is in open position
2. The ground coffee enters the inlet (2), after which the reducer-mo-
tor closes the espresso group, pressing 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 25 - Espresso group
Removing the espresso group:
1.
Disconnect the hot water supply pipe, unclamping the fixator (see figure 26a);
2. Disconnect the ready drink dispensing pipe together with the nozzle from the holder, lifting the spring
used to fix the pipe (see figure 26b);
3.
Turn the espresso group fixation screw counter clockwise (1) (see figure 26c);
4.
Lift the right lower end of the espresso group (2) then pull it out (3) (see figure 26c);
5.
Remove the espresso group (see figure 26d).
To install the espresso group carry-out the abovementioned actions in reverse sequence.
Figure 26 - Removing the espresso group
А
B
C
D
ATTENTION: The espresso group allows you to regulate the space in the chamber for intake
of ground coffee from the dosing mechanism. In case of setting the dosing mechanism into
positions 5 or 6 it is necessary to increase the capacity of the chamber by setting the stopper
ring in position B (see figure 27).
1
2
3
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