Victoria Arduino EAGLE ONE PRIMA

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7.6 FLOWMETER AND NOT
RETURN VALVE
To set the coffee dose, the machine has a
flowmeter, also called fan.
It is located on front-right side of the
machine.
The issues related to the flowmeter are
those that can be found when dosing cof-
fee, therefore only when using the pre-set
dosage buttons.
WHEN TO INTERVENE
The most common errors that you may
encounter are:
1
Wires disconnected accidentally or unin-
tentionally (i.e. after replacing a card).
2
There are impurities in the filter at the en-
trance of the fan.
3
The coil of the magnetic sensor has de-
teriorated and no longer reads the values
correctly.
4
The not return valve is blocked.
If one of these cases occurs, pressing one of
the settable buttons, the machine does not
make coffee and does not stop (obstruc-
tion to the limit), or it can happen that the
delivery does not stop as planned.
In these cases the key pressed with the
settable button could flash to highlight a
malfunction.
NOTE
For further information on the flowmeter
alarm, refer to Chapter 10.
Even if the programmed doses do not work,
the machine will always operate in semi-
automatic mode using only the start/stop
button until the arrival of the technician.
To verify that the fan is effectively locked
you can:
1
Check function by measuring the voltage
supplied to the control unit during a de-
livery.
2
Directly inspect the part.
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