My employer has a jet pump on a shallow well that has never operated correctly. I was not involved in the set up of the system, but I'm trying to troubleshoot it and get it working.
Pressure tank seems okay, and I set it at 28 psi, as per the instructions on the pressure switch on the pump.
When the pump was turned on, it would reach the cut-out pressure, then rapid-fire on and off continuously, until the power was turned off to keep it from burning up the points. Upon contacting the pump company, they assumed it was a bad pump or pressure switch, and sent us a whole new unit.
When I hooked up the new pump, upon throwing the switch (after draining the pressure tank to 2 psi below the set cut-in on the pump), the pressure switch on the pump did the same rapid-fire. I then realized that the system had a check valve on the discharge, above the pump.
Today, I removed the check valve, and replaced it with a ball valve. This time, when turning on the pump, it ran, but when the pressure gauge on the tank reached about 45psi, it started doing the rapid fire on and off.
I am now assuming that the pipe going down in the cistern does not have a foot valve on it, or it is leaking. One reason I concluded this is I could hear the water running back down the pipe when I turned off the pump. So, I plan to install a check valve between the cistern and the inlet of the pump.
Is that likely to solve the problem? Is that a sufficient substitute for having an operative foot valve?
Pressure tank seems okay, and I set it at 28 psi, as per the instructions on the pressure switch on the pump.
When the pump was turned on, it would reach the cut-out pressure, then rapid-fire on and off continuously, until the power was turned off to keep it from burning up the points. Upon contacting the pump company, they assumed it was a bad pump or pressure switch, and sent us a whole new unit.
When I hooked up the new pump, upon throwing the switch (after draining the pressure tank to 2 psi below the set cut-in on the pump), the pressure switch on the pump did the same rapid-fire. I then realized that the system had a check valve on the discharge, above the pump.
Today, I removed the check valve, and replaced it with a ball valve. This time, when turning on the pump, it ran, but when the pressure gauge on the tank reached about 45psi, it started doing the rapid fire on and off.
I am now assuming that the pipe going down in the cistern does not have a foot valve on it, or it is leaking. One reason I concluded this is I could hear the water running back down the pipe when I turned off the pump. So, I plan to install a check valve between the cistern and the inlet of the pump.
Is that likely to solve the problem? Is that a sufficient substitute for having an operative foot valve?