Amateur Plumber
Member
My Wayne ReliantOne 1 HP convertible shallow well jet pump failed last week. I began to see some air in the lines, loss of water pressure, and then the pump stopped pumping water completely. I replaced that pump with a new Grundfos 1 HP JP4-61ASI Shallow Well Jet Pump. After priming the new pump, it ran for a couple of minutes to fully prime, and then pumped water up to the 50 psi shutoff pressure. The system holds pressure with no issues. I drained the system, and added air to the pressure tank to give it a precharge of 28 psi, which is 2 psi lower than the turn on pressure of 30 psi of the new pump. The old pump was set to 20 – 40.
The water pressure in the house is good, and there is no air present in the water delivered. My issue is that the pump is very noisy. It sounds to me like the pump is re-priming itself each time it kicks on. It makes a lot of noise, has a few shudders as it runs, and then smooths out and quiets down just as it gets to the shutoff pressure. Any ideas on what could be causing this?
Thanks.
The water pressure in the house is good, and there is no air present in the water delivered. My issue is that the pump is very noisy. It sounds to me like the pump is re-priming itself each time it kicks on. It makes a lot of noise, has a few shudders as it runs, and then smooths out and quiets down just as it gets to the shutoff pressure. Any ideas on what could be causing this?
Thanks.