Water Hardness - Miele CM7500 Operating Instructions Manual

Water hardness

If the descaling method has been set
to
Manual descaling
will need to be set for the local water
hardness level. A prompt to run the
descaling programme will then appear
in the display at the right time.
The water hardness level indicates how
much calcium is dissolved in the water.
The higher the calcium content, the
harder the water, and the harder the
water, the more often the coffee
machine will need 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 machine
needs to be descaled.
The machine has four programmable
levels:
Water hardness
0 - 8.4 °dH
(0 -1.5 mmol/l)
8.4 - 14 °dH
(1.5 - 2.5 mmol/l)
14 - 21 °dH
(2.5 - 3.7 mmol/l)
> 21 °dH
(> 3.7 mmol/l)
The machine is programmed ex-works
to hardness level 3.
74
, the coffee machine
Local Setting
water (hardness
hardness level)
level
Soft Soft 1
Medium Medium 2
Hard Hard 3
Hard Very hard 4
Measuring the water hardness
level
You can determine the water hardness
yourself using the enclosed test strip.
Alternatively, your local water authority
will be able to tell you the hardness of
water in your area.
 Dip the test strip in your drinking
water for approximately one second,
then shake off any excess water. The
result will be evident after about
a minute.
Setting the water hardness
level
Start in the Drinks
 Touch .
 Select
Settings 
 Select
Water hardness
arrow sensor.
 Select the hardness level you want
and then touch
The setting is now saved.
menu.
.
with the 
OK .