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5.2
Machine tune-up
When installation is complete, the appliance has to be
started, brought to the nominal working condition and
left for 30 minutes in the "ready to operate" condition.
Afterwards, the appliance has to be turned off and
emptied of the first water introduced in the whole
hydraulic circuit, to eliminate possible initial impurities.
Then, the appliance must be once again loaded and
brought to the nominal working conditions.
After reaching the "ready to operate" condition, the
following has to be performed:
1.
for each coffee unit, carry out a continuous delivery,
in order to release the whole volume of water
contained in each associated coffee tank;
2.
release the entire volume of the hot water from the
boiler by continuous delivery through the specific
spout. In the case of several dispensing points,
divide the volume on the base of the number of
the dispensing points;
3.
continuously release steam for at least 1 minute for
each steam dispensing point.
5.3
Water replacement
If the machine remains inactive longer than 1 week, it
is necessary to perform the changing of the 100% of the
water contained in the hydraulic circuits of the machine,
by using the appropriate dispensing points, as described
in the chapter "Warnings for the installer".
• Before using the machine, run dry deliveries with
the filter holder attached for a few seconds to
release any air which may be in the circuit, so that
i
the delivery groups are completely heated;
• before using the machine, dispense a few servings
of coffee to test the grinding and to check the
operating pressure of the machine;
• during dispensing of coffee, do not remove the
filter holder from the brewing.
Technical manual
6
Preparing the components
6.1
Grinding and dosing
It is important to have a dosing-grinding device next
to the machine with which to grind the coffee to use
daily.
The grinding and the dosing of the coffee must be
done according to that indicated by the manufacturer
of the dosing-grinding device. The following points are
also to be kept in mind:
• to obtain a good espresso it is recommended not to
keep large stocks of coffee grains. Observe the expiry
date indicated by the producer;
• never grind large
volumes of coffee,
it is advisable would
be to have the quan-
tity contained in the
dosing device and
use it if possible by
the end of the day.
• never to buy (if pos-
sible) already ground
coffee, as it expires
quickly. If necessary,
buy it in small vacuum-sealed packages.
6.2
Preparing the filter holder
• Fill the filter with a dose of ground coffee
(circa 6-7 gr.) and press it with the press;
• hook the filter-holder to the unit without closing it too
tightly in order to avoid excessive wear of the gasket;
• for the same reason it is recommended to clean the
edge of the filter before attaching the filter holder to
the dispensing unit;
• follow the procedures specified by the manufacturer
of the grinder.
!
To prevent the seal from wearing too soon, clean
the edge of the filter before engaging the filter
holder on the dispensing unit. Do not excessively
tighten the filter holder to the dispensing group.
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