Miele PW 6163 Operating And Installation Instructions page 29

Water hardness
range
I
II
III
IV
Check with your local water supplier if you do not know the water
hardness range in your area.
Water
characteristic
Soft
Medium
Hard
Very hard
Washing
Overal Overall
hardness hardness (°d)
(mmol/l)
0–1.3
1.3–2.5
2.5–3.8 14–21
> 3.8
0–7
7–14
> 21
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