Description
Model L931 has many operation modes by adopting different electric installations. An important feature that makes the difference between Model L931 and common On/Off pump control box is the probe / sensor free in the well. Our special design makes it a very reliable and sensitive protection against pump dry running without installation of a probe / sensor in the well.
Technical parameter & Features:
- Built In function switch
- applied for water supply by liquid level control through float switch or liquid probe;
- applied for water supply by pressure control through pressure switch and pressure tank;
- applied for drainage by liquid level control through float switch or liquid probe.
- Automatic stops the pump in the case of water shortage, protecting it from dry running without installing float switch or liquid probe in the well.
- Auto / Manual switch.
- Dynamic LCD displaying pump running state.
- Push Button Calibration.
- Pump Accumulative Running Time Displaying.
- Pump Last Five Fault Record Displaying.
- RS485 Communication.
- Starts and stops the pump in accordance with the different liquid level or pressure setting.