after a 4 day power outage there I had no water. There was power to my switch but the water pressure gage read 0. The pressure switch points were pretty black and I tried to clean them with little effect. went out and got another 30/50 switch which was the same as the old one, and I had water for all of 5 minutes. My tank can not seem to hold water pressure for long,but it holds air pressure fine so I do not think it is the tank. I am getting 240v to the switch but can not seem to to adjust the pressure up on the switch. One other thing the tank calls for a 40/60 switch would that make a difference