Bobby Drake
13-03-2010, 04:55 PM
1) What sort of time would you expect for pressure to equalise on a domestic refrigeration cabinet?
2) Is there a minimum time after having vac'ed out a system that you should leave your vacuum gauge before you are happy there is no loss of vacuum?
3) I have seen a piece of literature that related to an AC unit on a bus or coach, I believe. It said about vac'ing to at least 500 Microns (I don't have a micron gauge, just a vacuum gauge in mBars) & leaving for 5 mins & if it doesn't rise by a further 500 microns from when the vac pump is switched off, the system is ok. Does this also apply to domestic refrigeration & if so, how can I translate 500 microns into Mbar?
Thanks again guys.
2) Is there a minimum time after having vac'ed out a system that you should leave your vacuum gauge before you are happy there is no loss of vacuum?
3) I have seen a piece of literature that related to an AC unit on a bus or coach, I believe. It said about vac'ing to at least 500 Microns (I don't have a micron gauge, just a vacuum gauge in mBars) & leaving for 5 mins & if it doesn't rise by a further 500 microns from when the vac pump is switched off, the system is ok. Does this also apply to domestic refrigeration & if so, how can I translate 500 microns into Mbar?
Thanks again guys.