Necta Koro Espresso, Installation, Use And Maintenance Manual

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© by N&W GLOBAL VENDING SpA 0512 264 - 00
WATER TEMPERATURE CONTROL
The boiler temperature is controlled by the software and can
be adjusted directly from the menu.
ADJUSTING THE GRADE OF GRINDING
When a variation in the grade of grinding is desired, turn the
relevant adjusting knob on the grinder (see Fig. 20) and
more specifically:
ADJUSTING THE COFFEE DOSE
The grinder is fitted with a sensor that can count the number
of rotations of the grinding wheels.
This allows the control software of the machine to deter-
mine the number of rotations, and therefore grams of
coffee, for each single selection.
With the dose programming procedures (after setting the
output of the grinder in gr/s) it will be possible to set the
grams (7.5 to 10.5 gr) of ground coffee for each selection.
To take the dose just remove the coffee unit and select the
special item from “Special functions” of the “Technician”
menu (see relevant section).
Important notice!!!
To refit the coffee unit, pay special attention to the
piston position. Reference notches on the handle and
on the unit case should match (see Fig. 24).
- turn the knob anticlockwise for coarser grinding;
- turn the knob clockwise for finer grinding.
For optimum results, it is advisable to vary the grade of
grinding with the coffee grinder motor running.
N.B.: After adjustment of the grade of grinding, at least
3 test selections must be performed in order to check
the new grade of grinding for ground coffee:
The finer the grade of grinding the longer the time necessary
for dispensing the coffee and vice versa.
After the adjustment it will be necessary to check also the
amount of ground coffee, which can have small variations.
Fig. 20
1 - Coffee grinder
2 - Grinding adjusting knob
3 - Coffee conduit
4 - Coffee funnel