My customers pump used to operate 40/60 with pressure tank. I replaced the old pressure gauge as it was leaking. Well, the leak is fixed but now the pressure switch seems to be amiss. When I first turned it on, the pump came on and pressure built to 45 then when i turned off the controller, I watched the sprinklers gradually shut down and then go off. I waited for the pressure to build on the gauge and for the pump to shut off, but the pressure continued steady @ 45 and the pump continued to run-even tho no sprinklers were operating. I shut the pump off at the electrical panel and waited for a few minutes then tried everything again. I turned zone 1 on @ the controller, pump came on @ 42psi-everything worked fine-ran thru all the zones and then turned controller off. The sprinklers were off for maybe 10 seconds, but the pressure gauge still stayed steady @ 42psi and then the pump shut down. I turned system on one more time, but this time, with zone 1 running, I completely closed the gate valve to the sprinkler system. I could hear the pressure build up, the pressure gauge barely moved off 42psi and then the pump shut off. Any ideas about what happened to the 40/60 setting? I did not touch the pressure switch during my repair. Do I babble too much?