DeLonghi ENV300.B Manual page 36

3. Close the head and turn the lever toward lock position
4. Empty the drip tray, used capsule container, cup support. Fill the water
tank with two units of Nespresso descaling agent. Add water up to the
"descale" mark on the water tank (~ 1000 ml / 1l / 33.81 fl oz).
5. Take out the descaling pipe located at the back of the machine and plug
it into the milk carafe connector. Put the water tank back on the machine.
36
2 x ~1 L
.