No, it's not recommended, but it doesn't get wet and dries very quickly.

Yes, you can. But it doesn't make much sense in my eyes, as it is not designed as a dry vacuum cleaner.

It works to vacuum dry, but there are far better vacuums.

Yes, there is a function

Yes, it works; there is a hoover programme without water.
However, the roller routines without water, so use the programme before the water programme.
The suction power is sensational, much better than my Dyson cordless hoover.
I can only recommend the appliance as it also has a self-cleaning roller with a drying function.

Yes, you can, but the brush runs along with it, which leads to wear and tear. The dry mode is intended more for picking up liquids such as milk before mopping.

This is possible, but the filter is very small and therefore only interesting for small areas.