espresso coffee machine - technician instructions
12
- english
R
ATTENTION
The hydraulic connection must be made in compliance with local national standards.
On lever machines, the hydraulic connection should be made only to the water supply with a minimum pressure of 1.5 bar.
If an external tank is used, the connection pipe between the machine and the tank must not exceed 150 cm.
For the European Community: for both the hydraulic connection to the water mains as well as the connection to an external
tank, a non-return valve
(15)
must be placed up the line from the machine as set forth by standards EN 1717.
ATTENTION
During the installation of the appliance, only the components and materials supplied with the appliance are to be used.
Should the use of other components be necessary, the installer must verify their suitability to be used in contact with water used
for human consumption.
The installer must carry out the hydraulic connections in accordance with the hygiene norms and the hydraulic safety norms for
environmental protection in force in the place of installation.
FOR THE U.S.A.
The water connections and discharges must be made in accordance with the 2003 International Plumbing Code of the
International Code Council (ICC), or with the 2003 Uniformed Hydraulic Code of the IAPMO.
The machine must be installed together with an adequate non-return valve, as required by national regulations.
NOTE
In all machines equipped with automatic water
fi
lling, there is an automatic time control device which allows the boiler
to be
fi
lled with water within a maximum period of time. This function keeps water from
fl
owing out of the boiler's valve
(
fl
ooding) and keeps the motor pump from overheating.
If the maximum time is not enough for the boiler to
fi
ll up completely (machines installed with 3 or 4 groups), turn the ma-
chine off and then back on, and repeat the operations shown above.
When the machine is started for the
fi
rst time, it is advisable to
fi
ll the boiler manually using the knob
(7).
Warnings
1) The water supply must provide cold water for human consump-
tion (potable water) at a pressure between 1,5 and 5 bars If
the pressure is higher than 5 bar, connect a pressure reducer
before the pump.
2) insert a tap
(16)
on the water mains supply so that it will be
possible to cut off water flow to the machine;
3) in order to prevent it from being damaged, it is advisable to install
the softener where it will be protected from accidental blows;
4) to prevent the water from freezing, install the softener in rooms
with an ambient temperature of more than 5°C;
5) if there is no softener, connect the water mains
(16)
directly
to the inlet of the external motor pump
(12)
;
6) if there is an internal motor pump, connect the outlet of the
softener
(11)
(if there is one) or the water mains
(16)
directly to the machine inlet
(6)
;
7) when connecting the tub of the machine to the sewer drain,
avoid overly tight curves or kinks, and make sure that there
is sufficient inclination for water to flow out of the drain.
8) the drain must be connected to an inspectionable siphon that
can be periodically cleaned in order to avoid the backflow of
unpleasant odours;
9) to avoid oxidization and damage to the machine over time, do
not use iron connections for the hydraulic connections, even if
they are galvanized.
16
11
12
6
7
15
