Question about Solis Barista Perfetta Plus

You can flush or make a blank draw.

Backwashable no. 500 ml of water is rinsed through the brew group from the tank.

I use a cloth and press the espresso button briefly and then press it again. Then a little water is added and coffee residues are rinsed out. The brewing unit requires cleaning with the tablet after about 1 month anyway (depending on how much coffee is brewed). Or as described above.