How to put a jet pump into operation
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Why is it necessary to supply steam to the ejector pump in a rehydration system before opening the steam extraction valve? A technician told me that opening the steam extraction valve first can affect the vacuum level. How exactly does it have an impact?
Opening the extraction valve first will cause backflow
During startup, the start-up vacuum pump is activated; during switching, the second vacuum pump is turned on first, followed by the first one, in order to remove the air and non-condensable gases from inside the jet pump