Vertical centrifugal pumps in the industrial production, urban water supply, high-rise building water supply and other fields have a very good performance, its use has also been affirmed. Due to the particularity of its workplace, vertical centrifugal pump may occur when working conditions to prepare workers in advance, it is best vertical centrifugal pump in the first place can be promptly dealt with. Next, several common vertical centrifugal pump failure will be analyzed, I hope these solutions can help the user's work. Vertical centrifugal pump failure analysis and solutions 1, the phenomenon of the phenomenon: the pump can not discharge Fault Analysis: a. Rotation in the opposite direction; b suction or discharge valve is closed; c inlet or pressure is too low; solution: a. Confirm the rotation direction; b. Confirm the valve is closed; c. Check the valve and pressure gauge; 2, the phenomenon of failure: insufficient pump flow Failure Analysis: a. Suction or discharge valve is closed; b. Inlet pressure is low; c outlet blockage; Solution: a. Confirm that the valve is closed; b. Check if the valve is open; c. Confirm the discharge volume is normal; 3, Fault phenomenon: abnormal sound failure analysis: a. Coupling eccentricity or poor lubrication; b. Motor failure C. Check the bearings and gears; 4, the phenomenon of failure: the current is too large Fault Analysis: a. The outlet pressure is too high; b. Check the motor; c. . Melt viscosity is too large; c. Poor seal assembly; Solution: a. Check the downstream equipment and pipelines; b. Viscosity test; c. Check the shaft seal, proper adjustment; 5, Symptoms: Sudden stop pump failure Analysis: a. Blackout; b. Motor overload protection ; C coupling damage; d outlet pressure is too high, the interlock reaction; solution: a. Check the power; b. Check the motor; c open the safety cover, disk car inspection; d. Check the instrument interlock system; Through the above analysis, we can find that the use of vertical centrifugal pump, there may be many reasons for the failure, because of the special use of vertical centrifugal pump, so the vertical centrifugal pump failure occurs, workers need to consider May want more. Hope that the above vertical centrifugal pump troubleshooting can help new users.
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