sanctus@sympatico.ca
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I had a 1/2 horse centrifugal pump/pressure tank combo. The pump started to short cycle. It is set at 25/45. I shut down the water pressure and checked the air charge - 4 psi. I pumped it up to 18 psi. It dropped again. Ruptured bladder. I replaced the tank with a larger(40 gal) horizontal pump. It was preset to 40 psi. I brought it down to 30 psi.
I did not disconnect the pump from the well; just connected the new tank. I did not prime the pump as it had always started up well and not having disconnected the pump it should not have any air. The pump winds up to 30 psi, stutters there(the gauge) and keeps running. I can open a tap and it will run all day. When I pull the plug, it holds at 30 psi. The foot valve is ok.
I got a new impeller kit and replaced it - same result. I shut off the valve immediately after the tank - same result.
I installed a 1/2" plug on top of the pump rig to check for air. It is primed. It sounds like it is churning but when I check there is no air in the impeller chamber. Why would a pump not be able to make 45 psi? Thanx for you consideration.
I did not disconnect the pump from the well; just connected the new tank. I did not prime the pump as it had always started up well and not having disconnected the pump it should not have any air. The pump winds up to 30 psi, stutters there(the gauge) and keeps running. I can open a tap and it will run all day. When I pull the plug, it holds at 30 psi. The foot valve is ok.
I got a new impeller kit and replaced it - same result. I shut off the valve immediately after the tank - same result.
I installed a 1/2" plug on top of the pump rig to check for air. It is primed. It sounds like it is churning but when I check there is no air in the impeller chamber. Why would a pump not be able to make 45 psi? Thanx for you consideration.