CONSTANT PRESSURE EXPERTS FOR OVER 20 YEARS
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 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.
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