ENGLISH
User Manual MECHANIKA V SLIM
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7.3 Prophylactic descaling
To avoid damages due to lime residues, a prophylactic, regular descaling may be required
For descaling follow our descaling instructions. Doing so will protect your machine against expensive
repairs.
An already calcified machine may only be descaled by your specialised dealer because a partial
disassembling of the boiler and the tubing will be necessary in order to prevent the system from being
blocked by lime residues. A late descaling can cause substantial damage to the machine.
A regular descaling of the machine is recommended in order to avoid calcification and expensive repairs. While
descaling, always take into account the hardness degree of the water. It is very important to use a sparing descaler
which does not affect the metal. You can purchase a descaler in powder or tablet form perfectly suited for your
machine at your specialty dealer. Just fill the water tank with fresh water and dissolve one bag of the descaler in it.
Then proceed as follows:
1
Heat up the machine until the operating pressure has been reached (1.0-1.2 bar).
2
Switch the machine off.
3
Empty the boiler by operating the hot water dispenser. Then close the hot water dispenser again.
4
Mix the descaler with water according to the instructions and put it into the water tank.
5
Switch the machine on. Thus, the empty boiler is automatically filled with descaling liquid.
6
Operate the group lever and release 250 ml water from the brew group. Thus, the heat exchanger is filled with
descaler liquid.
7
Clamp the portafilter with the blind filter into the group 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
Remove the portafilter from the brew group.
10
Have the descaling liquid circulate through the group by operating the group lever.
11
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.
12
Rinse the water tank and remove lime or descaler residues.
13
Fill fresh water into the water tank.
14
Switch the machine on. Thus, the boiler is automatically filled with fresh water.
15
Refill water into the water tank.
16
Operate the group lever for approx. 60 seconds to rinse the heat exchanger.
17
Clamp the portafilter with the blind filter into the group and operate the group lever to remove descaler residues
from the expansion valve.
Operate the group lever again to stop dispension.
Then remove the blind filter from
the portafilter.
18
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
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 manuf
acturer’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.