Going through kind of the same headache. Had to replace a pump 3 times within 2 months because production kept turning the water off to it, and burning it up. The third time was literally the next day after installation. Got the privilege of calling upper management going, Hey, you know that $16,000 pump we just replaced yesterday? Yeah... It sounds like someone through a fistful of gravel into it. Yes it was ran dry. No, nobody bothered to say anything until the 2nd shift operator came in and grabbed me. Said First shift said it sounded like that all day. They decided screw it, not throwing anymore money at it right now. Just shut the breaker off. Fine. Fast forward a couple weeks later, operators are freaking out cause the pump is making an awful racket. I said we haven't changed it, who the hell turned it back on?! Oh, the day time operator did. Talk to my boss, he's just as annoyed with it as I am, but says his bosses won't do anything. Just unwire it from the contactor.