My well pump tank has a screw in the top of it. My pump was running extra hard last night at 60 psi. I turned off the well pump and removed the screw from the top air shot out of the top valve really fast (air bomb). I drained the tank and put the screw back and the pump filled the tank at 15 psi. After the tank was filled I tested it and the pump ran really hard at 50 to 60 psi. I'm assuming that there is too much air in the tank and I wanted to know if I should have filled the tank with the valve left out and once I saw water come out kill the pump put the screw back in and turn the pump back on.

Thanks for your help!
Mike

Not sure what you mean that the pump was running hard. At any rate, you probably have one of the galvanized tanks. It is supposed to have air at the top. In fact, it would be a problem if it didn't have an air charge.

If you feel the pump is trying to get to too high a pressure, then you can turn that down some at the switch. That is the small grey box with electrical wires coming out of it. It is probably attached to a water line within inches of the tank and perhaps to the tank itself. With power off, remove the grey cover. Turn the large center nut one full turn COUNTER clockwise. Turn on power and see what you have. It's a little bit of trial and error.

Assuming the pump is above ground. Also assuming the pressure tank is galvanized. Let me know if that is not correct.

Hi Mike and Welcome to The Plumbing Page at AMHD.com. You're responding to a 3 year old dead threads so I gave you one of your own. Please check the date before you post. Thanks
I'm not quite sure if you have a blue bladder tank or a galvanized pressure tank. Is sounds like a bladder tank. You charge a bladder tank with air when the pump is off, an assistant drained. Charge the bladder tank with two PS I under the cut in point of your control box.
If you have a galvanized pressure tank click on back and will address that. Back to you, Tom