Maintenance - ECM Technika IV Instruction Manual

6 Place the filter holder with the blind filter into the housing of the group and operate the group lever 3 times for
about 20 seconds each time. Move the lever into the lower position after every operation. This descales the
expansion valve.
7 After this process, let the descaler react for approx. ½ hour.
8 Release the remaining descaler solution by operating the group lever.
9 Switch off the machine and empty the boiler by operating the hot water dispenser. (It is recommended to
unscrew and remove the nozzle of the hot water dispenser so that no dirt can accumulate inside the nozzle.)
10 Pour fresh water into the water tank.
11 Switch on the machine. The boiler automatically refills with fresh water.
12 Refill the water tank with water.
13 Operate the group lever for 3 times. Move the lever into the lower position after every operation.This rinses the
expansion valve. Then remove the blind filter from the filter holder.
14 Operate the group lever for approx. 60 seconds in order to rinse the heat exchanger.
15 Repeat points 9 – 11 three to five times in order to rinse the boiler.
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. filter holder 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 the 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.
30
3
The shower screen and the gasket
are now nearly removed.
ENGLISH