I have a centrifugal pumping machine that fails to pump up consistently. When powdered on, it spills up water, then stops and continues intermittently like that without a consistent flow of water out. What could be the cause? I just rewound it, and it works just fine. I suspected the capacitor, but not fully. Anyone who has more understanding should please tell me what's wrong. Thanks in advance
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1$\begingroup$ Is the supply of water restricted? $\endgroup$– Solar MikeFeb 22 at 12:27
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$\begingroup$ If it is fine after rewinding, the problem was probably with the winding or the brushes. $\endgroup$– AJNFeb 22 at 12:47
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$\begingroup$ @AJN could it be the capacitor because it uses a run capacitor? $\endgroup$– Apata JohnFeb 22 at 13:56
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$\begingroup$ Does the motor stop or does the water output stop ? $\endgroup$– blacksmith37Feb 22 at 14:55
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$\begingroup$ @blacksmith37 the motor doesn't stop but makes like hum hum hum sound. It seems like it on and off rapidly. I believe this causes the water to not flow out as normal but intermittently. $\endgroup$– Apata JohnFeb 22 at 16:26
2 Answers
Please also check the inlet (suction side) of the pump for leaks. If there is a vacuum leak in the inlet plumbing, it will suck air into the pump housing and cause the pumping action to stop.
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$\begingroup$ I don't think there is air leakage. Its air tight. $\endgroup$ Feb 23 at 5:48
You may have check the seals in housing, otherwise the pump is sucking air instead of water. Run thru a trial test in a tub/pool