Prophylactic Descaling; Maintenance - Profitec Pro 500 Instruction Manual

Caution!
Beware of hot sprayings while cleaning the brew group.

7.3 Prophylactic descaling

A regular descaling of the machine is recommended in order to avoid strong 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 specialised dealer. 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 operational pressure or the preset temperature on the PID has been
reached.
2 Switch off the machine.
3 Empty the boiler completely by operating the hot water dispenser. Discharge the heat exchanger by
operating the brew group lever. Then close the hot water dispenser and coffee dispenser.
4 Dissolve the descaler in water according to the instructions and pour the solution into the water tank.
5 Switch on the machine. This automatically fills the empty boiler. Afterwards, operate the brew group
lever and release about 250 ml water through the group. The heat exchanger will fill up with the descaler
solution.
6 Place the portafilter with the blind filter into the housing of the group and operate the brew 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 according to the manufacturer's instructions.
8 Release the remaining descaler solution by operating the brew 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 or lime can accumulate inside
the nozzle.)
10 Clean the water tank, then pour fresh water into it.
11 Switch on the machine. The boiler automatically refills with fresh water.
12 Refill the water tank with water.
13 Operate the brew group lever 3 times for approx.. 20 seconds. Move the lever into the lower position after
every operation. This rinses the expansion valve. Then remove the blind filter from the portafilter.
14 Operate the brew 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. Please do not descale
the machine if it is already calcified. While descaling the machine, the lime residues can plug
certain components, such as valves, gauges etc., causing damage to your espresso coffee
machine. In this case, please contact your specialised dealer. It is likely 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.

7.4 Maintenance

(If you have any questions, please contact your specialised dealer.)
Replacing the group gasket and the shower screen:
Switch off the machine (power switch in lower position) and disconnect the power cord.
Let the machine cool down to room temperature.
Bedienungsanleitung / Instruction manual Profitec Pro 500
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