Pressure and current fluctuations in high-speed pumps
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It is normal for a high-speed pump (GSBW3A) to operate in one unit while another serves as a backup during initial operation. However, now the pressure and current values of this high-speed pump fluctuate greatly, cleaning the filter does not help, and cavitation occurs while the pump is running. Could everyone please help determine what the problem might be?
The flow rate is too low, causing boiling inside the medium; it is recommended to increase the reflux valve setting in order to keep the flow rate above the minimum level
If the vibration is also high, the cause is likely cavitation, as mentioned by the poster. This is a phenomenon that occurs easily with high-speed pumps; it is recommended to exhaust air more at the inlet or to install a gas separation tank and other modifications to the pipeline design in order to prevent cavitation.
Is the temperature of the medium at the pump inlet too high? If it is, cavitation is likely to occur.