Vacuum pump icing issue
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The vacuum pump has achieved a vacuum level of -0.9; the working fluid currently used is water, and the ambient temperature is around 7°C. How can freezing be prevented?
What is there to fear about water at seven degrees? First of all: a pump cannot freeze while in operation; running water does not go bad ； Secondly: When parking, empty the three holes under the pump cover ； This year the weather has been especially cold, and many pump covers have been damaged by freezing; there is business to be done ；
It won’t freeze during operation, but it needs to be frozen when shut down – the working fluid inside must be completely drained.
I think there’s something wrong with the question you’re asking. Since vacuum extraction is being used, solvents will definitely end up in the water. It won’t freeze even at 0°C, let alone at 7°C – so there’s no need to worry about this at all :)
It is recommended to properly insulate the pipes; wrapping them with insulation material, just like in air conditioning systems, should solve this problem
Freezing problems generally do not occur during operation; they only happen when the unit is stopped, the working fluid has not been drained, and the ambient temperature is below zero. . . The outdoor temperature is 7, so it shouldn’t cause freezing. . .