Maintenance; Daily; Weekly; Washing Of The Coffee Groups - Rancilio CLASSE 10 USB S Original Instructions Manual

11. MAINTENANCE

Maintenance operations have to be carried
out when the machine is off and cold and
the plug is disconnected. Some particular
operations 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
specialized service centres.
11.1. Daily (Fig.10)
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.

11.2. 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.11)
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).
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 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.12), slide out the drip
tray and clean them both.
 Check and clean the drainage sump 4 (Fig.14),
removing any sludge with the help of a spoon.

11.2.1 Washing of the coffee groups

At the fixed time, if the automatic washing (par.2.6)
mode is enabled, a message on the display requests
to wash the coffee groups.
Keep "ENTER" button pressed to start washing until
the display shows:
Coffee Cleaning Cycle
Start cleaning cycle
Group?
press <ENTER>
If you press "enter" within 10 seconds, the following
cycle starts (if you do not leave this menu automa-
tically):
- The display shows:
Coffee Cleaning Cycle
Insert the blind
filters then
press <ENTER>
- When you press "enter", the cleaning cycle starts
and the display shows:
Coffee Cleaning Cycle
CLEANING RUNNING
The machine carries out n. 10 cycles as follows:
- Starts dispensing from the groups for 10 sec.
- Pauses for 10 sec.
At the end of the 10 cycles, the display reads:
Coffee Cleaning Cycle
Remove the
filterholders
press <ENTER>
If you press "enter" the display shows:
RINSE RUNNING
The machine carries out n. 2 cycles as follows:
- Starts dispensing from the groups for 30 sec.
- Pauses for 30 sec.
Keeping ''esc'' pressed for 2 seconds, during the
cycle the current washing phase will stop and the
next phase will take place.
It is advisable to always complete the rinsing cycle
to remove any detergent residues.
N.B. In the washing and rinsing phases the groups
are operated alternatively.
In any case the washing of the coffee groups can
be enabled whenever necessary according to the
previously described procedure.