Grifjc
New Member
I am new to this forum and not sure i am posting correctly. Anyway here goes:: I have a hand dug water well that is spring fed; use for lawn watering only. Have about 2 acres so once the pump comes on it pretty well just stays on the way sprinklers are set up. I have a 3" 155Q07-150 pump Grundfos set in 2008 using 36' drop pipe per the installer's ticket. I recently realized after 8-9 years that I need to periodically check the air pressure in my 80+ gallon bladder tank! My pressure switch is a 30/50 switch although the ticket i received in 2008, when i had the tank, pump and switch new plumbing done, showed "M-1 30/55 PSI and showed p-tank 25psi" (which i have no idea what that means). Anyway I followed instructions that I found on line and drained tank completely. Sure enough air pressure was 21#'s. I aired tank up to 28#. Refilled with water and it cuts off right at 50#; but, it only cuts back on when gauge reaches the 22 -24# range?? Which means i have a differential over 20#, which i understand pumps are all set to 20# differential? Is there an adjustment that would raise the cut in pressure closer to a 20# differential or have I got other problems with the switch? Thanks so much for any feedback.