9
EN
1) General Description
The models AV and EE are built in 1, 2, 3
and 4 group versions and are essentially
composed of the following parts:
1. Water boiler (produces steam and hot
water);
2. Coffee (“saturation”) boiler;
3. Brewing groups;
4. Exterior;
5. Water pump;
2) Description of the various parts
• Steam Boiler
The steam boiler consists of a cylindrical
tank, whose length varies according to
coffee group number, which is made of
stainless steel. Each unit is subjected to a
hydraulic test, at a pressure of 3 bar, and
has an operating pressure of 1.5 bar. You
will find below a list of effective volumes
and standard power ratings according to
the number of groups installed:
1 group
3.5 litres
1300 Watts
2 groups
7 litres
3000 Watts
3 groups
11 litres
4000 Watts
4 groups
15 litres
4350 Watts
Higher powered heating elements are
available for steam boilers in some
markets. Covers are installed at either end
of the cylindrical tank and on one of them
there is a housing for water heating and
vapourizing electrical elements, which
allow reaching operating pressure within
approximately 25’. Operating pressure
is maintained by a pressure switch. The
water boiler has various fittings used for
safety devices, for supplying hot water and
steam, and for power supply.
• Coffee Boiler
The coffee boiler is subjected to a
hydraulic test, at a pressure of 16 bar, and
has an operating pressure of 9 bar. You will
find below a list of effective volumes and
power ratings according to the number of
groups installed:
1 group 1.8 litres
1000 Watts
2 groups 3.4 litres
1400 Watts
3 groups 5.0 litres
1600 or 1900
Watts
4 groups 3.4 + 3.4 litres
1400 +1400 Watt (2 boilers installed)
It consists of a cylindrical tank, whose
length varies according to coffee group
number, which is made of stainless steel.
Covers are installed at either end of the
cylindrical tank and on one of them
there is a housing for water heating and
vapourizing electrical elements, regulated
by a precision PID Controller, with a
dT of ±0.5°C, which keeps the water
temperature constant. This temperature
can be adjusted to reach the optimal level
according to the type of coffee blend being
used. The groups are welded to the boiler.
• Brewing Groups
The brew groups are made of stainless
steel, where you are supposed to engage
the portafilter used to hold the ground
coffee; the espresso flows from the group,
through a spout, into the cup(s) after the
brewing button has been pressed.
• Exterior cover
The exterior cover consists of painted
and stainless sheet steel panels in order
to provide good aesthetics, optimize
ergonometrics for the operator and reduce
the chance of damage to a minimum.
• Water Pump
A rotary vane pump is installed on water
supply tubing and set up to operate
anytime the coffee groups are activated
and - through an autofill system - whenever
the water boiler needs to be replenished.
THE MOTOR PUMP MUST BE SITUATED
CLOSE TO THE MACHINE IN AN ACCESSIBLE
PLACE FOR MAINTENACE BUT NOT FOR
ACCIDENTAL INTERFERENCE AND WHERE
THERE IS AN OPTIMAL AIR CIRCULATION
