Usual scenario is to flip the pressure water breaker on to energize the pump, then to flip it off after pumping water. That is for no particular reason by the way. As far as symptoms, unlike the previous boats, this pump did not shut off in what I would consider a reasonable time. Like it could never build up pressure in the lines. I don't believe the system was every used until I put water in it either. I noticed that the vanity sink in the head never gets a true stream of water out of the faucet, it comes out like there is always air in the line. Finally, we did not really have enough time to use it very much.