Key points for using submersible pumps
Date: 2013-03-05Read: 10
HBZhan Content Introduction:miniaturesubmersible pumpCompact and lightweight, it plays an important role in rural production and life.
The following points should be noted during use.One When installing a small submersible pump, the cable should be overhead and the power line should not be too long. When the unit is launched, do not put any force on the cables to avoid causing the power lines to break. Do not sink the submersible pump into the mud, otherwise it may cause poor heat dissipation and burn out the motor winding.II When choosing a submersible pump, attention should be paid to its model, flow rate, and head. If the selected specifications are inappropriate, sufficient water output will not be obtained and the efficiency of the unit will not be fully utilized. In addition, the direction of rotation of the motor should also be clarified. Some types of submersible pumps can produce water in both forward and reverse directions, but the water output is small and the current is high in reverse, which can damage the motor winding. to preventsubmersible pumpWhen working underwater and causing electric shock accidents due to leakage, a leakage protection switch should be installed.III Try to avoid starting up at low voltage. The power supply voltage should not differ from the rated voltage by more than 10%. If the voltage is too high, it can cause the motor to overheat and burn out the winding. If the voltage is too low, the motor speed will decrease. If it does not reach 70% of the rated speed, the centrifugal switch will close, causing the starting winding to be energized for a long time and generate heat or even burn out the winding and capacitor. Do not frequently turn on and off the motor, as it will generate backflow when the electric pump stops. If you start it immediately, it will cause the motor load to start, resulting in excessive starting current and burning out the winding.4 Do not allow the water pump to operate at overload for a long time, and do not pump water with high sediment content. The dehydration operation time of the electric pump should not be too long to avoid overheating and burning out the motor. During the operation of the unit, the operator must observe at all times whether the working voltage and current are within the values specified on the nameplate. If they do not meet the requirements, the motor should be stopped to identify the cause and eliminate the fault.Five Regularly check the motor. If cracks are found on the lower cover, damaged or ineffective rubber sealing rings, etc., they should be replaced or repaired in a timely manner to prevent water from seeping into the machine.