2ª 10028 – E 03 - 2016
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3.2.5 Filling the hot water boiler
On connecting the machine, the hot water boiler fills automatically.
In the espresso coffee machines the following processes take place:
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The cold water fills the boiler if it is empty.
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It checks the water meter is working and it fills the boiler with the EV closed, it
detects it is full when the water meter stops spinning. Then it opens the EV for the
instant products and the boiler to let the air that is trapped inside go out.
If flow meter does not spin for 10 consecutive seconds during the automatic
filling of the boiler, the machine will go out of order because no water is
detected. To reset the error, just enter and exit the programming or switch
off and then switch on the machine.
3.2.6 Flow regulation of the electro-valves (instant machines)
If the flow out of the EV is low, it may provoke jams of product in the beaters because the
quantity of the water that reaches the beater is not enough to completely dissolve the instant
product.
On leaving the factory, the EV has the correct volume for the quantities of product that are
programmed. However, if the programming of the product is modified or the EV is changed,
the flow should be checked and regulated if needed. The flow is regulated with the screw on
the EV. Turning the screw left increases the flow and to the right reduces it.
Although the regulation of volumes is correct, this may reduce over time due
to the accumulation of scale in the EV and may need readjusting.
