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filling the boiler with water until it reaches the
pre-set level; the level of water in the boiler is
checked automatically and will be topped up
automatically to the required level.
• When filling the boiler for the first time, the filling
timeout may be triggered (flashing of the LEDs
on the keypads); this is normal because filling
an empty boiler takes longer than the set safety
timeout (120 s).
Switch the machine off and on again using the
main power switch. The machine will continue
to draw in water until it is full. N.B. This process
may be repeated two or three times.
Do not switch on the heater power switch
(2) until the boiler is filled to the correct
level.
• When the automatic water filling process has
finished, press the switch (2). This will switch on
the heating element to heat the water.
• Wait for the machine to reach the operating
pressure of 1.1 ÷ 1.3 bar, checking the pressure
of the boiler on the pressure gauge (11). If
the machine does not stabilise at the values
indicated, you should adjust the pressure switch
as indicated in paragraph 5.1.
• Check the pressure on the pump pressure gauge
(11) by operating a group head with the filter
holder inserted and full of properly ground,
dosed and pressed coffee, to obtain an effective
operating pressure of 8/9 bar. If you need to
adjust the pump pressure, follow the instructions
in paragraph 5.2.
If there is no water in the boiler when
the machine is in operation, the heating
element will fail. This must be replaced by
an authorised service centre.
During start-up:
when the boiler pressure gauge (11) indicates
approximately 0.5 bar, slowly open the steam
knob/lever (13) to discharge any air that may be
contained in the boiler. Wait until steam starts to
come out of the steam nozzle (12) before closing
it. Wait until the machine reaches the operating
pressure and the correct thermal balance, after
35-45 minutes.
Do not press the hot water dispensing
button or turn the tap before the correct
operating pressure of 1.1 bar has been
reached, indicated on the boiler pressure
gauge.
Wait for the machine to reach the operating
pressure of 1.1 ÷ 1.3 bar, checking the pressure
of the boiler on the pressure gauge (11). If the
machine does not stabilise at the values indicated,
you should adjust the pressure switch as indicated
in paragraph 5.1.
The machine is now ready for use.
5–1. PRESSURE SWITCH
The function of the pressure switch shown in Fig.
5 is to maintain a constant pressure in the boiler
by activating or deactivating the electric heating
element.
This pressure switch is set to a value of 1.1 -
1.3 bar during the final test of the machine.
However, if a specific application requires a
different working pressure, the working range
of the pressure switch can be modified using
the adjusting screw (U): reducing the pressure
reduces the temperature, increasing the pressure
increases the water temperature. The direction
of adjustment is indicated in the figure and on
the pressure switch. The pressure changes by
approximately 0.1 atm for each complete turn of
the screw.
Caution! Disconnect the power supply
before performing this operation.
5–2. CALIBRATING PUMP PRESSURE
• Insert the filter holder full of properly ground,
dosed and pressed coffee into the group head.
Turn on the switch or use the group head control
keypad (15) and read the pressure on the pump
pressure gauge (11).
• The correct pressure is 8/9 bar. If the reading on
the pressure gauge is incorrect, turn the pump
pressure adjustment screw Fig. 6 (Z) clockwise
to increase the pressure or anti-clockwise to
decrease the pressure. After regulating the
pressure, check the pump setting by delivering
one or more coffees.
6. PREPARING COFFEE
• To obtain a good cup of espresso coffee, it is
important that you use good quality, well roasted
and correctly ground coffee. Grinding is optimal
when it takes 15-18 seconds for one cup and 30-
35 seconds for two cups to be delivered.
• Coffee should be ground just before it is used.
Once ground, coffee loses its flavour very
quickly. If the coffee is too coarsely ground, the
coffee will be light coloured and weak without
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