My problem started after I changed pressure tanks, no problems prior to change. This is what happens.
When the gauge pressure drops from 60 to 40 psi, right before the pump starts the gauge pressure drops to zero. In a few seconds the gauge starts to climb and shuts the pump off @ 60psi. If you are using water when the gauge hits 40, the water stops flowing for a second or so. The pressure tank is charged at 38 psi. The gauges are new. What I have done and observed. I turned power off to pump. Connect hose to bottom tank drain. As I drained the water and watched the gauge pressure drop, when the gauge pressure hit 40 psi it fell immediately to zero. Turned power back on and pump started and pumped to 60 psi and shut off. At this point pressure holds steady, no drop. I am pushing water out slowly through a hose starting at 60 psi and it flows steady until it hits 40 psi, then it is instantly no more flow and straight to zero. If it was still water in the bladder @ 40 psi would it not continue a slow drop on the gauge. Anyone have any ideas ?
When the gauge pressure drops from 60 to 40 psi, right before the pump starts the gauge pressure drops to zero. In a few seconds the gauge starts to climb and shuts the pump off @ 60psi. If you are using water when the gauge hits 40, the water stops flowing for a second or so. The pressure tank is charged at 38 psi. The gauges are new. What I have done and observed. I turned power off to pump. Connect hose to bottom tank drain. As I drained the water and watched the gauge pressure drop, when the gauge pressure hit 40 psi it fell immediately to zero. Turned power back on and pump started and pumped to 60 psi and shut off. At this point pressure holds steady, no drop. I am pushing water out slowly through a hose starting at 60 psi and it flows steady until it hits 40 psi, then it is instantly no more flow and straight to zero. If it was still water in the bladder @ 40 psi would it not continue a slow drop on the gauge. Anyone have any ideas ?