Sorry, tfoster, was replying to original message on thread.
When I put my Vacuflush in the wiring diagrams showed no internal breaker or fuse and there was no reset button on the pump. I wired it directly to my breaker panel. I suppose it's possible that a different model might have a built-in breaker but I don't see why.
MyVacuflush has a footpedal on the right-hand side which lets in water and turns on the pump. I'm wondering if one of the connections there might have been broken in transit. Seems the most likely culprit.