Miele PG 8581 Operating Instructions Manual page 29

 Never fill the container with water.
The container could overflow when filled with salt.
Add salt into the container until the funnel is full but still closes
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easily. Do not add any more than 2 kg of salt.
As the salt container is being filled, displaced water (brine) may run
out.
Clean any excess salt from around the opening of the container,

focusing especially on the container's seal. Do not use running
water to rinse away salt residues as this can cause the container to
overflow.
Close the container.

 Do not force the container shut if it has been overfilled.
If an overfilled salt container is forced shut, this may damage the
container.
Remove excess salt before closing the container.
Rinsing
Run the programme after refilling the salt.
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This will ensure that any traces of salt and brine are dissolved, diluted
and rinsed away.
Excess salt and brine which has overflowed can cause corrosion
damage if they are not rinsed away.
Water softener
29