| Symptom | Cause | Remedy |
| Pump is cycling off and on |
Pressure switch or PK1W valve not set correctly |
Cut off pressure must be higher than PK1W pressure. Increase pressure switch cut off or decrease PK1W valve setting. |
| Waterlogged pressure tank |
Replace pressure tank |
| Bad or torn diaphragm in PK1W |
Replace diaphragm. |
| Manifold not assembled correctly |
Verify assembled as instructed |
| Low Pressure |
Demand is more than pump can provide at current pressure setting |
Reduce demand so it is within pump capabilities to maintain desired pressure. |
| PK1W is not set correctly |
Reset PK1W. (Turn adjust stem clockwise to increase psi and counter clockwise to decrease psi) |
| Chattering |
Too much air in tank |
Reduce air pressure in tank to 5-7 PSI below pressure switch cut in pressure. |
| PK1W setting is too close to pressure switch cut off pressure |
Set pressure switch cut off pressure at least 10 PSI higher than PK1W setting. |
| Pump rapid cycles at start up and then begins to function correctly |
Air pressure in tank too high |
Reduce air pressure in tank to 5-7 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. |
