Safety precautions for small stainless steel submersible pump

Safety precautions for small stainless steel submersible pump

Small and portable stainless steel submersible pump plays an important role in rural production and life, and the following points should be noted in the use.

When choosing a submersible pump, pay attention to its model, flow and head.If the selected specification is not appropriate, it will not be able to obtain sufficient amount of water, and can not give full play to the efficiency of the unit.In addition, it is necessary to understand the rotation direction of the motor, some types of submersible pump are turning and reversing, but the water volume is small and current is large, and the reverse transfer damages the motor winding.Leakage protection switch should be installed in order to prevent electric leakage of submersible pump when working underwater.

2. When installing the submersible pump, the cable should be elevated, and the power cord should not be too long.Do not force the cable when the unit is in the water, so as not to cause the power cord to break.The submersible pump does not sink into the mud, otherwise it will cause heat dissipation and burn the motor winding.

3. Avoid starting at low pressure.Power supply voltage and rated voltage is within 10%, the voltage is too high will cause motor overheating and burning of winding, the motor speed is reduced voltage is too low, such as amounted to less than 70% of rated speed, start centrifugal switch would be closed, due to start around the leader time electricity and heat and even burn winding and capacitors.Do not switch the motor frequently, this is due to the backflow when the electric pump stops, and if it is switched on immediately, the motor load will start, causing the starting current to be too large and the winding will be burnt.

4. Do not allow the pump to be overloaded for a long time. Do not pump water with large amount of sand. The operation time of the electric pump should not be too long, so that the motor will not overheat and burn down.In the operation of the unit, the operator must observe whether the working voltage and current are in the numerical value specified on the nameplate. If not, the motor should stop running, find out the reason and eliminate the fault.

5. Check the motor frequently. If any cracks or rubber seal rings are found to be damaged or invalid, the machine should be replaced or repaired in time to prevent infiltration of the machine.