Miele CVA 7845 Operating And Installation Instructions page 57

If you are using bottled drinking water,
e.g., mineral water, select settings
according to the calcium content. The
calcium content is given on the label of
the bottle in mg/l Ca
2+
Ca /l).
Do not use carbonated water.
The hardness level is set to 21°dH by
default.
Water hardness
°dH mmol/l
1 0.2
2 0.4
3 0.5
4 0.7
5 0.9
6 1.1
7 1.3
8 1.4
9 1.6
10 1.8
11 2.0
12 2.1
13 2.3
14 2.5
15 2.7
16 2.9
17 3.0
18 3.2
19 3.4
20 3.6
2+
or ppm (mg
Calcium Setting
content
2+
mg/l Ca or
2+
ppm (mg Ca /l)
7
14
21
29
36
43
50
57
64
71
79
86
93
100
107
114
121
129
136
143
Water hardness
°dH
21
22
23
24
25
26
27
28
29
1
30
2
31
3
32
4
33
5
34
6
35
7
36
8
37–45
9
46–60
10
61–70
11
12
Useful tip: If your water hardness is
> 21°dH (3.8 mmol/l), we recommend
13
using bottled drinking water instead
14
(< 150 mg/l Ca
15
coffee machine will need to be
16 descaled less often and there will be
less impact on the environment
17
because less descaling agent will be
18
used.
19
20
Calcium
content
mmol/l
2+
mg/l Ca
ppm (mg Ca
3.8 150
3.9 157
4.1 164
4.3 171
4.5 179
4.6 186
4.8 193
5.0 200
5.2 207
5.4 214
5.5 221
5.7 229
5.9 236
6.1 243
6.3 250
6.4 257
6.6–8.0 258–321
8.2–10.7 322–429
10.9– 430–500
12.5
2+
). This will mean your
Settings
Setting
or
2+
/l)
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37–45
46–60
61–70
57