The meaning of submersible pump is that the pump body and motor can be immersed in water to work.
Next, Cheng Yue submersible pump will tell you why the submersible pump should be prevented from starting at low pressure.
The power supply voltage and the rated voltage can not be different. The high voltage causes the motor to overheat and burn out the winding. The low voltage causes the motor speed to drop. If the rated speed is not reached, the startup centrifugal switch will close and form the startup coil to be electrified for a long time and generate heat, even burn out the winding and capacitor. Do not switch on and off the motor frequently, because there will be backflow when the electric pump stoprunning. If the motor starts immediately, the starting current will be too large and the winding will be burnt.