ECM ELEKTRONIKA PROFI Instruction Manual - page 27
ENGLISH
Instruction manual ELEKTRONIKA PROFI
26
6
Remove the filter holder and rinse it. Then place it in to the housing of the group again.
7
Press the star key shortly to make sure that the degreasing residues in the group are removed completely.
Caution!
Beware of hot spillings while cleaning the group.
7.3 Prophilactic descaling (for water tank machines)
A regular descaling of the machine is recommended to avoid strong calcification and expensive repairing. 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. At your specialised dealer, you can purchase a descaler (in powder or tablet form)
which is perfectly suited for your machine. Just fill the water tank with fresh water and dissolve the descaler in it.
Then proceed as follows:
1
Heat up the machine until the operative pressure has been reached (1.0-1.2 bar).
2
Switch off the machine.
3
Empty the boiler, operating the hot water dispensing. 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 on the machine. Thus, the empty boiler is filled automatically with descaler liquid.
6
Press the star key 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 filter holder with the blind filter into the group and press the star key. Dispense liquid for approx. 20
seconds and press star key 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
Make the descaling liquid circulate through the group by pressing the star key.
10 Switch off the machine and empty the boiler by dispensing hot water. Then close hot water valve again.
It is recommended to unscrew and remove the nozzle of the hot water dispenser so that no dirt
can be accumulated inside the nozzle.
11 Rinse the water tank and remove lime or descaler residues.
12 Fill fresh water into the water tank.
13 Switch on the machine. 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
blind filter from the filter holder.
16 Press star key for approx. 60 seconds to rinse the heat exchanger.
17 Repeat point 9 to 11 three to five times to rinse the boiler.