When the machine stops brewing espresso, the 3-way
EV
is set to standby, so it closes the water outlet
from the boiler and the
group
is connected to the third way. Therefore, the water that could not flow
through the coffee during the brewing process and which is held inside the
group
, will be driven through
the third way to the waste container.
The water is pushed back from the brewing
group
to the third way of the
EV
, since it is at a high pressure,
which will have been previously increased by the pump during the brewing process.
I1. 3-way channel open
I2. Group connected at the ambient
pressure
I3. Water channel closed
Technical features:
The boiler water temperature is controlled with a PTC100. The table below shows the resistance values
of the PT100, according to the temperature to which it is exposed.
Heater resistor voltage
120/230 VAC
Heater resistor power
1,800 W
Programming the temperature
70 to 94ºC
Manual reset thermal protection
120ºC
Power supply of the EVs
24 VDC
Soluble and espresso EV power
10 W
Maximum pressure supported by each EV
15 kg/cm²
Operating temperature of the EVs
-10º C to 140º C
