With that question, I want to point out that if you sue a café in Germany because YOU spilled hot coffee on your self, you won't get a penny. I heared different happend over the pond 
Its assumed that a German consumer knows that opening that port on 140° or even our famous boil washes can hurt you. And that if this is needed, care should be taken.
However, I think its more a style over use thing.

Its assumed that a German consumer knows that opening that port on 140° or even our famous boil washes can hurt you. And that if this is needed, care should be taken.
However, I think its more a style over use thing.