Miele PG 8504 Operating Instructions Manual page 54

Adding and dispensing chemical agents
Nozzle A 802
54
Add powder cleaning agent to the dispenser.

Close the flap.
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 Make sure that all of the cleaning agent has dissolved at the
end of the programme.
Repeat the programme if residual cleaning agent is present.
Check whether any load items have prevented the flushing out of
the dispenser and rearrange the load items if necessary.
The nozzle A 802 flushes the powder detergent out of the dispenser
during the programme.
If an upper basket and a lower basket with two modules are being
used, nozzle A 802 for powder detergent must be fitted. The
operating instructions for the modules describe how to do this.