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Abnormal noises can occur during the operation of a vacuum discharge pump, and this is a clear sign of a malfunction in the pump. So how can such abnormal noises be resolved? Solutions for abnormal noises during the operation of a vacuum discharge pump: 1: Abnormal noises may result from a failed seal in the pump, which leads to a loss of vacuum; it is recommended to check whether the seal is damaged and to replace it promptly. 2: Check whether there is any air leakage at the inlet and outlet flange connections to ensure the airtightness of the pipeline connections. 3: The components subject to overcurrent wear out severely, resulting in excessive clearance; this leads to a decrease in the pumping force of the vacuum discharge pump and thus cavitation occurs – it is necessary to replace these components promptly. 4: There is a deviation in the concentricity between the pump and the motor; adjust their concentricity again. 5: Excessively high oil temperature caused bearing damage; replace with new high-temperature resistant bearings. 6: The filter is clogged, preventing the medium from flowing smoothly and causing abnormal noises; remove the filter screen and clean it with diesel. 7: The installation height is insufficient, resulting in a low liquid level that affects the pump’s ability to discharge under vacuum; it is recommended to raise the liquid level.