Miele PWM 514 Operating And Installation Instructions page 29

Water hardness
levels
Hardness range
Soft (I)
Medium (II)
Hard (III)
Check with your local water supplier if you do not know the water
hardness in your area.
Washing with dispensing drawer
Hardness in mmol/l
0 - 1.5
1.5 - 2.5
above 2.5
German scale °dH
0 - 8.4
8.4 - 14
above 14
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