The motor is like any magnetic power head, so there are not directly connected parts. I can't imagine that a would cause any damage but the gyre is a bit different in that there is no continuous shaft from end to end. The flow cages have studs on both ends so you could end up with a magnet in the center section that is rolling around I suppose. You might check with support to find out what happens in this case, my first control unit wouldn't let me run it below 40%, it would error out and flash red after about 15 seconds so I think there is some kind of feedback or monitoring to see if the rotor is turning like it should, and if it is not, it stops the unit. I got a replacement control unit and ti now runs at 10% no problem, these units have a break-in period where the ceramic parts need to wear slightly and "seat"