I had a new pressure tank installed today. When the plumber left, I noticed the cut on / off pressure is around 35/45. Also, when it gets to 35, the pressure drops quickly to about 30, creating a lag in water pressure before the pump kicks on. I just checked and the factory precharge is 38 psi. Do you think the problem is that the plumber set the gauge on/off pressure too low? From what I've read, it sounds like it should be set at 40/60.
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