Regarding the issue of the oil pump running in reverse

2009-02-19View Original

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The oil pumps in our factory are triple-screw pumps, and they are equipped with a combination valve at the outlet. These pumps tend to rotate in the reverse direction when stopped. Currently, the program is set so that the relief valve solenoid activates 2 seconds after the motor loses power. To address the issue of reverse rotation, we have conducted tests; however, when the relief solenoid activates within 1.5 seconds of the motor losing power, abnormal noises are produced by the pump’s combination valve, but the reverse rotation stops. We would like to ask the experts on this forum how to resolve this problem of reverse rotation and abnormal noises in our factory’s oil pumps. Additionally, is there any regulation requiring that the motor must stop only after the relief valve has opened? Thank you all

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Regarding the issue of the oil pump running in reverse

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