Miele WCE 330 Operating Instructions Manual page 36

Programme chart
Settings /Maintenance
Settings 
You can use the settings to alter the washing machine's electronics to suit
changing requirements. See "Settings" for more detailed information.
Maintenance
The washing machine has a maintenance programme.
Clean machine
With frequent washing at low temperatures there is a danger of a build-up of
bacteria in the washing machine.
Cleaning the washing machine will significantly reduce bacteria, mould, and
biofilm and prevent the build-up of unpleasant odours.
Note – Optimum results can be achieved by using the Miele IntenseClean
machine cleaner. Alternatively, a universal powder detergent can
be used.
– Dispense the washing machine cleaner or universal detergent
directly in the drum.
– Do not load any laundry. The drum must be empty for this
machine maintenance wash.
36
85°C No load