NERO / NERO INSTANT
Page 17
Version 1.4 / January 2018
ТМ
4.3.1 Installation fineness of grinding
The coffee beans are crushed using the coffee grinder, which is located underneath the coffee bean
container. When you select a drink, which uses coffee beans, the beans fall into the coffee grinder, where
they are ground using the built-in choppers, going further into the dosing apparatus, which is located in
front of the coffee grinder. From here the coffee is fed into the espresso group.
The quality of grinding of coffee depends on the rotation of the screw, located on the coffee grinder (see
fig.4.5 and 4.6 position1).
Turn the screw clockwise grind more (smaller particles) or counter clock-
wise to grind less (larger particles) – (see fig.4.5).
Set up the grinding of the coffee grinder.
After setting the grinding quality, check the quality of coffee. If needed please set again to achieve the
required level of grinding.
Note: The smaller the particle size the longer will be the extract and the drink will be more satu-
rated.
Setting the grinding parameters for the first time:
Turn the regulatory screw clockwise and bring the blades as close as possible (turn all the way). Then
turning the screw counter clockwise loosen the upper disk by 540-630 degrees (one and a half turn or one
and a half + quarter turn).
For more detailed settings of coffee grinder you can carry out the following actions I the given sequence:
change the position of the regulatory screw (to change the position of the upper disk of the coffee grinder
to a certain angle) and then make a drink and taste it.
Fig.4.5
1
2
Fig.4.6
If the level of grinding will be too low (very small particles),
the coffee grinder will not be able to ground sufficient amount of
coffee, which would lead to “Grinder” error and will block the dis
-
pensing of coffee. In such case you should increase the level of
grinding. For the purpose you must loosen the upper disk by turn
-
ing it counter clockwise.
If the particle size is large the coffee will be less concentrat
-
ed (less saturated). The time of working of coffee grinder will be
around 3-4 seconds. The thickness of output jet will be 3-4mm.
in this case you can also cause the leaking of the coffee group,
because very large particles of coffee damage the gasket of the
piston. In such cases you should decrease the particle size – turn
the upper disk clockwise.
The optimum time of grinder functioning is: 5-6 seconds
if coffee dosage is set to position 3 and 6-7 seconds if the
coffee dosage is set to position 4 (see the next section).
