In your case with a 60/80 pressure switch, the pressure switch turns the pump on at 60 when you start using water and turns the pump off at 80 when you are no longer using any water. The adjustment on the CSV1A sets the pressure for WHILE you are using water. So turn on a 3 GPM shower or something else that uses about 3 GPM and adjust the CSV1A to hold 70 PSI while the water is being used. Even if the shower is on for a month the CSV should hold 70 PSI and never let the pump shut off at 80 PSI. Only when you turn off all the faucets should the little tank fill and the pump shut off at 80 PSI.
