The Model 233-P single-phase PumpSaverPlus is a pump monitor designed to protect single-phase pumps from dry-well, dead-head, jammed impeller, rapid cycle and overvoltage and undervoltage conditions. The PumpSaverPlus Model 233-P protects 230 volt, 2 or 3 wire, 1/3 to 1.5 hp pumps. A calibration adjustment allows the Model 233-P to be calibrated to your specific pumping applications, thereby reducing the possibility of false or nuisance tripping. A proprietary microcontroller based voltage, power factor and current-sensing circuit constantly monitors for power fluctuations, overcurrent and underload conditions. When an abnormality, such as loss of suction, is detected, the  PumpSaverPlus deactivates its output relay and directly disconnects the pump motor. The PumpSaverPlus then begins its user-selectable Restart Delay (dry-well recovery) timer. When the timer expires or power is removed and reapplied, the PumpSaverPlus reactivates its output relay and turns the pump back on.