58300000111195_ARA_en_f.doc – 02.06.09 Seite 17 von 102
3.6 Descaling
The lime content in drinking water causes calcification of the thermal
block, the hose system and the valves in the appliance. This affects
the flavour of the coffee and reduces the service life of the appliance.
To ensure optimum quality, descale the appliance regularly.
If the illuminated ring around the calc descaling button
lights up red when the appliance is switched on and
the request to descale the appliance is indicated on the
display, the appliance must be descaled immediately.
Descale the appliance according to the following instructions,
otherwise the appliance may be damaged.
WARNING
► Never descale the appliance with vinegar or
vinegar-based substances.
► Do not interrupt the descaling programme.
► Never drink the liquid.
3.6.1 Descaling alarm
The correct setting of the water hardness is important for the
descaling indicator.
Test strip for determining the water hardness, mat. no.: 05 6317
Hardness 1 220 litres
Hardness 2 100 litres
Hardness 3 70 litres
Hardness 4 40 litres
If water hardness 1 is set, the request to descale the appliance is
indicated after 220 l of water. (1° – 7° dH)
If water hardness 2 is set, the request to descale the appliance is
indicated after 100 l of water. (8° – 15° dH)
If water hardness 3 is set, the request to descale the appliance is
indicated after 70 l of water. (16° – 23° dH)
If water hardness 4 is set, the request to descale the appliance is
indicated after 40 l of water. (24° – 30° dH)
3.6.1.1 Degrees of water hardness
Setting German French
1 1–7 1–13
2 8–15 14–27
3 16–23 28–42
4 24–30 43–54
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