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How to understand the normal rundown time history?

2016-09-20View Original

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Therefore, once a pump has been operating in a new system, the rotor shall not be turned by hand, as it may cause particles to get attached to it and become embedded there; instead, it should be started directly based on the normal shutdown time pattern. What does “instead, it should be started directly based on the normal shutdown time pattern” mean in this context? My translation of the preceding part is as follows: “Therefore, once the pump starts operating in the new system, the rotor cannot be turned by hand, as particles may be introduced.” PS: This passage is taken from the pump’s instruction manual. Please ask an expert to take a look, thank you!

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