I pump from a relatively clear creek. Pump sits about 15, maybe 20, feet above intake. Intake line is about 50 feet long. Foot valve installed at end of intake line. No leaks along intake line. Pumps goes uphill to pressure tank maybe 10 feet. From pressure tank to irrigation lines, maybe another 10 feet of head. Hard to estimate how much irrigation line. Maybe a half mile worth of underground 3/4” pipe. Pressure tank has no outside leaks, but there might be a slow bladder leak (over two years the psi dropped from 18 to 15).
Two years ago, when I replaced a 2hp model that had burned out, I was only able to get this model to reach 40 psi so I set the cut in to 20 and cutout to 38. Yesterday I found the same problem persists after trying to set it to 30-50. If left to it’s own devices in this scenario, the pump will reach 40 psi, then after a few minutes it will start to audibly struggle and slowly lose psi.
I’m at a bit of a loss here. My initial thinking is that I might have too much underground line for a 1.5 hp pump. Is there anything I’m overlooking?
Two years ago, when I replaced a 2hp model that had burned out, I was only able to get this model to reach 40 psi so I set the cut in to 20 and cutout to 38. Yesterday I found the same problem persists after trying to set it to 30-50. If left to it’s own devices in this scenario, the pump will reach 40 psi, then after a few minutes it will start to audibly struggle and slowly lose psi.
I’m at a bit of a loss here. My initial thinking is that I might have too much underground line for a 1.5 hp pump. Is there anything I’m overlooking?