Overflow trip at the outlet of the centrifugal pump
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The old pump: operating conditions remain unchanged; the motor operates normally when unloaded, there is no sticking when turning the pump shaft, and the current is normal when the outlet valve is not opened. However, it trips after just two rotations.
This post was last edited by shijiazhuang on 2021-4-22 at 22:28. Could it be that the motor is missing a phase? It’s unlikely that an old pump would shut down after just two starts
Today it was even worse: when the pressure at outlet 1 was reduced, the system entered a superflow condition after two rounds of operation; the impeller speed dropped by 15. After reinstalling it and restarting, reducing the pressure at outlet 1 still didn’t work, while reducing the pressure at outlet 2 caused a superflow condition that led to the system shutting down. This unit won’t function properly unless the pressure at outlet 1 is reduced, while outlet 2 can be used to keep the system running normally
If the process and the pump itself are fine, it is recommended to check the electrical aspects
It was fixed yesterday; the electrician said he adjusted the voltage and that solved the problem. . Could someone explain what’s going on here?