Hello All
I purchased a new 44gallon pressure tank and attempted to install it myself. After all connections had been made to the pump and to the rest of the home I turned power on to the pump. After a while of run time I learned that the pump was not actually pumping water into the tank? I then reduced the internal air pressure of the bladder tank from 45PSI down to 18. It then seemed to take water. I am really uncertain to what this air pressure should be? My pressure switch according to the sticker states a 20 PSI cutin. I don't see any gauges other than one on the pump to verify this. If this gauge is accurate it seems to shut off around 45 PSI. Is this a standard pressure switch. There is only one screw thing to adjust... but I don't know if it increases the cut in or out? When I turned it up, the pump would not turn off? Any help at all would be appreciated.
Really confused, frustrated.
Thanks

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My pressure switch according to the sticker states a 20 PSI cutin.I t seems to shut off around 45 PSI. Is this a standard pressure switch.

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20 PSI cut in and 40 PSI cut out is a normal control box setting.
Your bladder tank pressure should be set with the pump off and the system bled down.
You may now pressure the bladder tank 2 PSIunder your cut in point. In your case this would be 18 PSI. After the bladder tank's set you may turn the power back on and prfessure up the system. Good luck, Tom

Let's add one point. Since you have adjusted the nut that controls the cutin/cutout point, you will need to manually check those since they are probably no longer at 20/40. Do this by turning on water, then watch the pressure gauge as the pressure falls. When you hear the pump cut on, note that pressure. That is your cut in pressure. The tank pressure will need to be set at 2# below that number. And as SB stated, it needs to be set with the tank empty.

I might add that many people find the 20/40 setting to be a little low. If you want to raise those settings, turn the nut clockwise several turns. This is somewhat by trial and error, but keep tightening/loosening until you get to 30/50 or somewhere near those figures. And, sadly, the only way to verify your new cutin/cutout points is to repeat the procedure described in the first paragraph. So you can see that this can take a little time, but it is "well' worth it. If you do that, remember to reset the tank pressure at 2# below the new cut in pressure.

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