Magnetic polisher isn't working correctly?

Hi, real noob question. i bought a magnetic polisher a couple of
years ago, (a magico 2000, Italian built, from Cooksons, here in the
U.K. ) and Only just got round to trying it and have first tried to
clean the pins as per the instructions. I’m assuming the pins are
supposed to move around the plastic tub, but mine just stand on end a
bit. Am i right in thinking that the machine isn’t working correctly?

Thanks, Steven