Descaling can be done in four easy steps and should take about 20 minutes. Follow these steps.
Remove capsules and capsule container.
Put in 1 liter of warm fresh water (4 cups) in the water container.
Mix in a sachet of descaling solution.
Turn the machine on.
Turn a container than can hold up to a liter of water under the coffee outlet.
Pixie, Inissia, Essenza and Citiz – simultaneously press on two buttons for three seconds.
U – simultaneously press all three buttons for three seconds.
Lattisima – put in the descaling nozzle, press the cappuccino button.
Rinse the water container.
Pour in fresh water in the water container.
Run the cycle again without the descaling solution in the water.
Empty and rinse the drip tray.
Pixie, Inissia, Essenza and Citiz – press the two buttons simultaneously for three seconds.
U – press and hold three buttons simultaneously for three seconds.
Latissima – take out the descaling nozzle.