Submersible pumps, as a type of engineering machinery, are an important member of the pump family and have a wide range of applications. So, what is most important for submersible pumps? Let's take the submersible pumps produced by Shanghai Hongdong Pump Industry Manufacturing Co., Ltd. as an example to analyze this together.
Firstly, regarding the operating environment, a safe and reliable power supply is required. The height difference between the submersible pump's outlet pipe and the water surface in the pool must be less than the pump's head, and the water source must be relatively clean. Secondly, regarding startup, submersible pumps below 11 kW can be started directly. Submersible pumps above 13 kW require a step-down starter cabinet, primarily to ensure safe operation. After the submersible pump starts and begins operation, water level changes must be monitored to ensure normal operation. After the first 5 hours of operation, the pump must be stopped and the insulation resistance measured immediately; the measured value must not be lower than 0.5 MΩ.
Finally, regarding the operational analysis, the submersible pump must operate at a pre-set operating point. Since the axial force at the operating point is optimal, the submersible pump operates most efficiently, economically, and reliably at that point, and therefore cannot be arbitrarily changed. After 8 hours of operation, a comprehensive inspection of the submersible pump is required. This includes checking whether all instruments are operating normally, whether there is overheating at the circuit nodes, whether there are any abnormal sounds, and whether the current value during operation is greater than the motor's rated value.
That concludes the summary of the three points regarding submersible pumps. I hope this information has been helpful.
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