Switching of variable-frequency centrifugal pumps – Seeking expert guidance
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This post was last edited by 156026692 on 2018-12-6 at 15:53. Switching of variable-frequency centrifugal pumps – seeking guidance from experts
https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1972949 I just answered a related question a few days ago; you might want to take a look at it!
A hot oil pump, I guess. There’s a lot to say about it, but it’s actually very simple: inform the operator, check the lubricating oil and cooling water, turn off the pre-heating element, apply some variable-frequency current, observe the direction of pump rotation, fully open the outlet valve, have the operator adjust the flow rate, and then switch the pump. In short, it’s very simple
How did you figure out from the poster’s few words that he was talking about a hot oil pump? Looking forward to your advice!
There are also variable-frequency raw material screw pumps, but the cold oil pumps in our installations all use the power frequency. Hot oil pumps are generally equipped with variable frequency drives