Miele CM 5310, Operating Instructions Manual

Page: 22 / 76

Water hardness
22
Water hardness is an indication of the
amount of minerals dissolved in water.
The more minerals in the water, the
higher the water hardness. The harder
the water is, the more frequently the
coffee machine needs to be descaled.
The coffee machine measures the
amount of water used and steam made.
Depending on the level of water
hardness set, more or fewer drinks can
be dispensed before the appliance
needs to be descaled.
Program the coffee machine to the
water hardness level of your area so
that it functions correctly and does not
get damaged. A prompt to descale the
machine will then appear in the display
at the correct time.
Your local water authority will be able to
tell you the hardness of the water in
your area.
The water hardness level is set to 3 at
the factory.
The appliance has 4 programmable
hardness levels:
°dH gr/gal ppm
(mg/l CaCO
3
)
Set-
ting*
0–8.4 0–8.7 0–150 Soft 1
8.4–14 8.7–14.6 150–250 Medium 2
14–21 14.6–21.9 250–375 Hard 3
> 21 > 21.9 > 375 Very hard
4
* The hardness levels shown in the display may
differ from the hardness level designations in your
area. You
must follow the values in the chart to
set the correct water hardness level for your area.
Setting water hardness

Tap the

sensor button.

Select Settings  | Water hardness and
confirm with OK .

Select the hardness level and confirm
with
OK .
The setting is now saved.