Rancilio S20 - Manual (Page 89)

89
Cleaning the filters and delivery heads
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
container (NOT ALUMINIUM OR IRON).
● Remove the filters and immerse them with the filter
holders in the prepared solution, leaving them for
at least 20/30 minutes (all night is better).
● Remove them from the container and rinse them
thoroughly in running water.
● Remove the cup rack 1 (Fig.13), slide out the drip
tray and clean them both.
Models SYSTEM CD -LE
Operation to be carried out while there is still
some pressure in the machine.
● Drain the water from the boiler (approx. four litres)
using the hot water tap 7;
● Wait for the machine to te-establish its correct
thermal balance before use.
Models S27 - MIDI DE - SYSETM DE
Operations to be carried out with the machine
operative and under pressure.
Prepare a container that can hold at least two litres
od water (four litres dor model System) and place it
unter the hot water spout.
● Hold down the delivery button 8 for at least four
second. When this button is released, the machine
will deliver water continuously
● After two litres have been drawn off (four litres for
the model System), press the delivery button again
to stop dispensing.
● Wait for the machine to re-establish its correct
thermal balance before use.
Fig. 13
Fig. 14
● Check and clean the drainage pump 1 (Fig.13),
removing any sludge with the help of a spoon.
10.3. Periodical maintenance
Models TECNA CD - TECNA DE
Have been fitted with economizers which do not draw
water from the boiler to make hot water, the water in
the boiler need only to be renewed from time to time.
10.3.1. Renewal of water in the boiler
Models MIDI - TECNA
To be carried out only by qualified personnel.
● Turn off the machine and wait for the pressure in
the boiler to diminish (gauge needl on “0”).
● Using a spanner firmly hold 1 the outlet pipe 2
Fig.14 situated about the drainage sump while
loosening the hexagonal sealing screw 3 by 3 turns
at the most.
● Drain off the water and tighten the screw 3.
● Refill the boiler (paragraph 7.3.).