Water Softener; Water Hardness; Setting The Water Hardness Level - Miele PG 8581 Operating Instructions Manual

Water softener

26

Water hardness

In order to achieve good cleaning results, the machine needs to
operate with soft water. Hard water results in the build-up of calcium
deposits on the load and in the machine.
Mains water with a water hardness of 0.7 mmol/l (4 °dH) must be
softened. This occurs automatically in the built-in water softener.
The water softener must be set to the exact hardness of the mains
water (see "Water softener/Setting the water hardness").
Your local water authority will be able to tell you the exact degree of
hardness in the mains water supply.
For future servicing it is useful to make a note of your water
hardness level. Enter your water hardness level here:
________________________mmol/l or °dH
The water softener must be reactivated at regular intervals. This
requires special reactivation salt (see "Water softener/Filling the salt
reservoir"). Reactivation is carried out automatically during a
programme sequence.
If the hardness level of your water is constantly less than 0.7 mmol/
l (= 4 °dH), salt is not required for the water softener. The water
hardness level must, however, still be set.

Setting the water hardness level

Water hardness can be set between 0 and 12.6 mmol/l (0 - 70 °dH).
Open the menu as follows:

 button
 Further settings
Water hardness

The bottom line of the display shows the possible input range.
Water hardness input values can be found in the chart on the next
page.
Where the water hardness fluctuates, e.g. between 1.4 - 3.1 mmol/l
(8 - 17 °dH), always programme the machine to the higher value,
3.1 mmol/l (17 °dH) in this example.
Set the water hardness level using the arrow buttons

( = higher and  = lower).
Press OK to save the setting.

Water hardness
19 °dH
(0 - 70 °dH )