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The water pump inverter starts frequently

2021-05-04View Original

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The domestic water supply system is equipped with three pumps and a pressure stabilizing tank connected by pipes. When the pumps start switching on, the pressure reaches its upper limit, causing the frequency converter to stop; once the pressure drops rapidly to the level required for the pumps to start, the frequency converter resumes operation. At present, this causes the frequency converter to start and stop frequently; after about 7 or 8 such starts and stops, the pressure stabilizes and the frequency converter operates smoothly. The pressure sensor has been replaced, the pressure stabilizing tank passed the tests without any issues, and the check valves were also found to be in good condition. Does anyone know what could be causing unstable pipeline pressure?

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