I have a 3" well that was plumbed with a twin pipe 1 hp 110V Goulds jet pump. My neighbor has convinced me to install a 1 hp submersible as I plan on adding an irrigation system in the near future. I have installed the 3" sumersible, ran a new 220 V 20 amp circuit, and replaced both the bladder tank and pressure switch. The problem I am having is that the pressure switch cuts on and off continuously until the aerator is full and then the max pressure is maintained. I can adjust screw #1 on the pressure switch to raise or lower the pressure, but is still cuts on and off constantly. There is not a 20 psi drop in pressure like the box says. Screw #2 on the pressure switch does not widen this gap no matter how far I screw it down. I thought it was a faulty pressure switch, but I have replaced that three times today (Besides, the pressure switch worked prior to making this pump change). I thought it was a faulty bladder tank but replaced that also. I have adjusted the pressure in the tank to 28 psi for a 30/50 switch many times. I was told by the plumbing guru at the ACE hardware that the bladder tank was too far from the pressure switch. I have since moved it to within a couple of feet of the pressure switch. Please help. I have spent almost a thousand dollars already and have done nothing but screw up something that wasnt broke.