6.3 FlOwMeTer
The issues related to flowmeter are those arising
when dosing coffee, therefore only when the pre-
set dosage buttons are used.
WHEN TO INTERVENE
The most common errors that you may encoun-
ter are:
1 Wires disconnected accidentally or uninten-
tionally (e.g. after replacing a card).
2 There are impurities in the filter at the
entrance of the fan.
3 The coil of the magnetic sensor has dete-
riorated and no longer reads the values cor-
rectly.
4 Dispensed coffee doses other than the set
ones.
If one of these cases occurs, pressing one of the
buttons with pre-set the machine does not make
coffee and never stops (obstruction to the limit),
or it can happen that the delivery does not stop
or will not start as planned.
Moreover, the key pressed with pre-set will
remain lit, while the continuous / stop key will
flash to highlight a malfunction.
Even if the pre-sets 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 flowmeter is effectively locked,
you can:
1 Check function by measuring the voltage
supplied to the control unit during a delivery.
2 Inspect the flowmeter directly.
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