Thank you all for your suggestions. Originally built with a well (1955), our "new" house now has public water. But, the well and external pump (and storage tank and two filter tanks) remain, hooked up only to three hose bibs (plus faucets on the lines after each tank). Where do I begin to test and operate the system? The equipment looks at least thirty years old. We have ignored this system for two years (prior owners might have too). The electric pump (Franllin) fired up when I flipped the switch. Not wanting to run it dry, I imediately turned it off. How do I prime the pump, How do I get water to it test it if the well is dry? The well access (and it might be a cistern) (front yard near house) is a 3ft by 3ft concrete frame at grade topped with a pair of 1.5 ft by 3 ft by 6 inch concrete slabs. Moveable, but I am stopped by how much these slabs flake and crumble with first attempted movement. There are two lines (intake) running from the well to the pump (1.5 to 2 inch rubber), and two lines fr the pump to the storage tank (one 1/2 inch pipe and one small tube connecteing near top of storage tank to a roughly disc shaped valve - vacuum valve or pressure release valve?). Where do I begin? Thanks.