I had to think a minute to realize how long it's been since I saw one of those. Often replaced by screaming Dyson Air Blades, which are NOT your friend if you wear hearing aids.
This reminded me of the instruction manual for the Seagull outboard motor we had for our dinghy back when I was a kid.
Back then, there weren't 11 pages of "warning phrases" in 9 languages before getting to how to actually use the darned thing as everything seems to today. As I recall, pretty much at the beginning, they simply said:
If all else fails, read the instructions.
(Those were tough little motors. I read somewhere that some of "the little ships" that went to rescue the soldiers at Dunkirk were powered by these and some were dug up after the war and restored to working order.)