Question: Ok, I'll wait, I need 220 - 240 volts to work in Europe, but you have on the site written that this device is 240 volts
Carpet Cleaning Machine ( 6 - 2300 - H - 240V Set) - What does it mean?

Answer: All the 220, 230, and 240 volt machines are build the same and all work in all these environments.
Example if I have a default vacuum motor rpm of 20,000 rpm @230 volt. Then I plug that same machine into 240 volts, the vacuum motor will spin at 5% faster or A machine that plugs into 240 wall outlet turns 20,869 rpm. Still works.