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6
Operate the group lever and wait until liquid is released from the group. Thus, the heat exchanger is filled with
descaler liquid. Press the star key again.
7
Clamp the portafilter with the blind filter into the group and and operate the group lever. Dispense liquid for
approx. 20 seconds and operate the group lever again to stop dispensing. Thus, the expansion valve is descaled.
Repeat this process 3 times.
8
After this procedure let the descaler work for approx. ½ hour.
9
Have the descaling liquid circulate through the group by operating the group lever.
10 Switch the machine off and empty the boiler by dispensing hot water. Then close the hot water valve again.
It is recommended to unscrew and remove the nozzle of the hot water dispenser so that no dirt
can accumulate inside the nozzle.
11 Rinse the water tank and remove lime or descaler residues.
12 Fill fresh water into the water tank.
13 Switch the machine on. Thus, the boiler is automatically filled with fresh water.
14 Refill water into the water tank.
15 Start the cleaning mode with the blind filter to remove descaler residues from the expansion valve. Then remove
the blind filter from the portafilter.
16 Operate the group lever for approx. 60 seconds to rinse the heat exchanger.
17 Repeat point 9 to 11 five to seven times in order to rinse the boiler until clear, neutral smelling water comes out of
both the group head and the hot water release.
Important
These descaling instructions are only meant for prophylactic descaling. If you operate your machine
with direct water connection, contact your specialised dealer before undertaking this measure.
Please do not descale the machine if it is already calcified. While descaling the machine, the lime
residues can plug several components, such as valves, gauges etc., causing damage to your espresso
coffee machine. In this case, please contact your specialised dealer. It is probable that a professional
descaling has to be carried out which requires the disassembling of boiler and tubing.
Damage to persons or to the material, caused by calcification in and on your machine, is not subject to
the manufacturer's liability.
In this case, the warranty expires as well. Machines will only be accepted for repair after previous
technical advice and written acknowledgement has been given.
Please do not enclose loose parts e. g. portafilter or drip tray when sending in the machine for repairs
/ maintenance.
7.4 Maintenance
(If you have any questions, please contact your specialised dealer.)
Replacing the group gasket and the shower screen (Group gasket (item no. C449900229) and shower screen (item
no. C519900103) must be changed at the same time)
1
Switch off the machine (power switch in position"0") and disconnect the power cord.
2
Open the steam valve and release steam. Then close it again.
3
Let the machine cool down to room temperature.
Follow the steps as indicated below:
1
Brew group in the beginning.
Instruction manual MECHANIKA · TECHNIKA
2
Use a flat screwdriver to pry out the
shower screen and the group gasket.
29
3
The shower screen and the gasket
are now nearly removed.
ENGLISH
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