Summary of common faults in centrifugal pumps

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Summary of common troubleshooting for centrifugal pumps in actual production: a) Failure to build pressure or low outlet pressure; damaged outlet pressure gauge； The imported filter is clogged ； The pump is not venting or priming ； The motor rotation direction is reversed ； Air leak at the intake port ； Impeller detachment ； The impeller mouth ring is severely worn ； b) Insufficient export flow; the liquid discharge path is not open ； Insufficient import traffic ； Impeller detachment or mouth ring wear ； Air leaking at the entrance ； Causes of cavitation ； There is gas inside the pump ； The suction inlet is installed at too high a height ； c) Excessive load, high starting current, impeller jammed ； Bearings stuck ； Excessive sealing resistance ； What is the viscosity of the medium? ； Motor failure ； d) High vibration, high noise, and poor alignment accuracy ； Loose foundation bolts ； The base strength is insufficient ； Unbalanced rotor component ； Coupling issue ； cavitation phenomenon ； Damage to bearing components ； Friction between moving and stationary parts ； Lubricant level too low ； e) Leakage due to damaged pump casing seal ； Weld crack ； The mechanical seal of the pump shaft is severely worn ； The gland packing is too loose ；