synthetic oil and exposure to air

[Yuri B.]

A dull question, without doubt, but,
if a can with a synthetic oil was opened, closed, then left for a month (in the closed, although not fully hermetical can) and then the oil was put into a system, will deep vacuuming succeed in extracting all the inevitably formed in the oil moister?
Not mine - somebody's understanding is (if the can had been left fully opened to air, in such case the oil might have sucked in itself a dangerously big amount of H2O, but) the can had the rather tight lid on it, so, only a small amount of water from only the air in the can may have get into the oil.

[chemi-cool]

Purge the air from the can with OFN.

I only use big cans 20kg so its easy to keep it away from air.

[Yuri B.]

A purging was not done.

[Brian_UK]

You could try the vacuum test.....


Pulling moisture out of POE oil
http://www.youtube.com/user/Aussie50...65/NzXO858iGYw

[NoNickName]

It's doomed. H2O can't ever be removed from POE oil any longer, once came in contact with it.
Desterification happens in presence of water and heat, which is exactly the counter reaction of esterification:



Remove all oil, pull the vacuum without oil, put new oil, pull the vacuum with oil and heater on, good luck and hope for the best.

If acid already formed, then a suction line and liquid line acid removal filter (burn out filter) is recommended.

[Yuri B.]

Good evening and thank you for the video.
But what is bubbling up in his bottle indeed - refrigerant trapped, air (nitrogen, oxygen), H2O, ACID?! Will the result product of the experiment be usable

[Yuri B.]

By NoNickName

Desterification happens in presence of water and heat

But if it was not in heat yet? Is the can in the OP to be thrown away (sorry, its content properly utilised) or to be used accordingly to its application without much fuss?

[NoNickName]

No, it must be disposed of. Or it can be used for other purposes, like chainsaw lubricant or hydraulic fluid (not for brakes).