Rinse the water system :
- fill the water tank and switch the machine on
- place a container under the coffee outlet
- allow the equivalent of half the water tank to run through.
With the remaining half, rinse the hot water/steam attachment, as indicated in your machine's operating instructions.
Download the operating instructions for your machine
DeLonghi Lattissima F311
DeLonghi Lattissima F316
DeLonghi Lattissima F321
DeLonghi Lattissima F356