|Pump is cycling off and on
||Pilot screen is stopped up
|Liner is not seated correctly or debris or sand caught between liner and seat
||Remove liner and check for debris, reinstall liner
|Pressure switch or valve not set correctly
||Cut off pressure must be higher than valve pressure. Reset pressure switch or valve.
|Liner not seated correctly or worn out or debris caught between liner and seat
||Remove liner, remove any debris. Suction test by placing liner on flat surface and pressing on the center. Liner should hold suction. Reseat liner or replace if worn.
|Waterlogged pressure tank
|Bad or torn diaphragm in pilot valve
||Replace damaged diaphragm
||Valve is not set correctly
|Check red shoulder fitting on pilot for enlarged or missing orifice
||Replace worn orifice
|Demand is more than pump can provide at desired pressure
||Reduce demand so it is within pump capabilities to maintain desired pressure.
||Pressure tank is located too far away from the valve
||Relocate valve or tank to bring them closer together or add a second smaller tank to the system close to the valve.
|Too much air pressure in tank
||Reduce air pressure in tank to 5-10 PSI below cut in pressure.
|Pump rapid cycles at start up and then begins to function correctly
||Pressure switch is located on the main line or closer to the main line than the pressure tank.
||Move pressure switch to a small line at the base of the tank on a line no larger than 1 1/4" in diameter
|CSV setting is too close to cut off pressure
||Set pressure switch cut off pressure at least 10 PSI higher than CSV setting
|Air pressure in tank too high
||Reduce air pressure in tank to 5-10 PSI below cut in pressure
|Multiple check valves in system working against each other
||Remove all but the check valve or foot valve on the pump itself