Miele PWM 908 Operating And Installation Instructions page 54

Cleaning and care
Cleaning the filters in the water in-
take valves
 Using pliers, carefully loosen the
ribbed plastic nut on the intake valve
and unscrew.
 Use pointed pliers to grip the bar and
pull out the filter; then clean the filter.
Reassemble the appliance in reverse
order.
The filters must be put back in place
after cleaning.
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