Boiling H20 freezes

[r.bartlett]

Well not 100% & running the risk here of becoming Peter's signature

We have 3 gaseous base elements here 2 in the water and 1 with the introduction of nitrogen

along with any refrigerant that may or may not be present

Whilst pulling a vacuum oil is also often removed

The frozen substance is a mixture of H20+N (or maybe refrigerant) + oil

caused by pulling a vacuum too quickly & the hygroscopic feature of the oil in use

I have been informed that using the larger vac pumps on smaller systems is an issue

No experience of this though as I do not normally work on them

do not have mr o'brien 's email to hand or that copy of service engineer

can anyone confirm ?

http://hvac-talk.com/vbb/showthread.php?t=378742

[chillerman2006]

http://hvac-talk.com/vbb/showthread.php?t=378742

cheers, I'll have a butchers after dinner