13
of
68
TECHNICIANS manual
ENGLISH
2.6.9 DISPENSING
group
In this system, the dispensing group (
1
) is heated
by a thermosiphonic circuit (
2
) connected to the heat
exchanger (
3
). The same water is used for the coffee
dispensing, thus ensuring the same temperature for all
coffee servings:
t
activation of the solenoid valve and of the pump
allow cold water to enter the exchanger (
3
) through
the injector (
4
);
t
from the exchanger (
3
) the boiler water is carried to
the group (
4
) for dispensing;
t
the pump allows the increase of the pressure of the
water flow up to 8-9 bar for dispensing.
The injector (
4
) and the flow reducer (
5
) are important
components for the operation of the dispensing group.
To increase the coffee extraction temperature, remove
the flow reducer (
5
) or replace it with one of a larger
diameter. To decrease the temperature, replace it with
one of a smaller diameter.
Water
inlet
Coffee
dispensing
DISPENSING IN PROGRESS
5
3
4
2
1
3
IDLE
Summary of Contents for 1GR Series
Page 67: ......
