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64
10. MAINTENANCE
Maintenance operations have to be carried
out when the machine is off and cold and the
plug is disconnected. Some particular ope-
rations have to be effected when the machine
is operating.
Do not clean the machine by using metal or
abrasive devices, such as steel wool, metal
brushes, needles, etc. or general detergents
(alcohol, solvents, etc.)
When necessary, use special detergents for
coffee machines that can be bought in spe-
cialized service centres.
10.1. Daily (Fig.22)
Use a clean cloth or sponge that does not leave hairs
or fluff (preferably cotton or linen).
● Carefully clean the outside surface, following the
grain of the satin finish on the parts in stainless
steel.
● Clean the steam and hot water spouts and check
that the nozzles are not encrusted (if they become
encrusted, be careful not to deform or damage
them).
● Clean the spray units and the seals under the ca-
sing of the delivery units using the special brush
supplied.
● Remove the filter-holders and remove the filter and
the clamp which secures the filter, use a brush to
remove any coffee deposits and rinse with hot water
in order to dissolve any grease deposits.
10.2. Weekly
Operations to be carried out with the machine
operative and under pressure.
● Place the supplied blind filter in the filter-holder,
put in a spoonful of detergent in powder for coffee
machines and fit the filter-holder in the unit to be
cleaned.
● Press the coffee dispensing button and draw water
for approx. 30 seconds.
● Stop and start dispensing several times until clean
water comes out of the discharge unit tube.
● Remove the filter-holder, take out the blind filter
and insert a normal one.Replace the filter-holder
on the unit and rinse by drawing water several
times.
● Make a coffee to eliminate any unpleasant taste.
Cleaning the filters and delivery heads (Fig.23)
Operation to be carried out when the machine is off
and cold.
● Prepare a solution of 4 sachets of detergent
powder Code 69000124 dissolved in a litre of
boiling water in a stainless steel, plastic or glass
recipient (NOT ALUMINIUM OR IRON).
● Remove the filters and immerse them with the filter
holders in the prepared solution, leaving them for
at least 10/20 minutes (all night is better).
● Remove them from the container and rinse them
thoroughly in running water.
● Remove the cup rack 1 (Fig.23), slide out the drip
tray and clean them both.
● Check and clean the drainage sump 4 (Fig.23),
removing any sludge with the help of a spoon.
9.2.1 Tray case assembly (Fig.21)
The CLASSE 8 machine is provided with 2 side cases
to be applied to the tray group if the available space
does not allow, during installation, to install the ma-
chine in standard version.
To replace the cases installed on the machine, loo-
sen the 3 screws (Fig.21), take off and remove the
right case and replace with the one having smaller
dimensions.
9.3. List of failures
E00 CPU diagnosis
E01 Water lacking
E02 Pressure lacking
E03 Boiler temperature sensor in short circuit
E04 Boiler temperature sensor cut off
E05 Level board lacking
E06 IDS connection lacking