What I noticed was the same at the first rinse an annoying rattle when the pressure in the brewing unit is set up (Rising water pressure)
I think the feed pump is here defective because the outlet to the beat of the sound of water escaping. The machine has seen not a single bean and otherwise I have not made any settings.
Flop! Final testing of the device
As always exchanged Amazon the machine free and unbureaucratic out.
Rating is revised upon arrival of the new device.