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refrigerant recovery

mak11 on Thu December 18, 2008 11:11 PM User is offline

Country of Origin: United States

Does a vacuum pump or a refrigerant recovery machine also remove the oil from the system?
Thanks

HECAT on Fri December 19, 2008 6:13 AM User is offline

Yes and no. Varying recovery machine designs, vehicle system designs, system volume, port locations, ambient temps, and many other factors; all come into play.

If the refrigerant is removed as liquid it will most probably have oils suspended in it. If it is removed as a gas, it will be leaving the oils behind in the system.

In a recent test on a Toyota Prius, which has the ports located at the highest point in the system, and only uses 1 lb. of refrigerant; we recovered (and recharged) this system 5 times with a fairly new Snap-On RRR machine and had no measurable oil removal occur.

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mak11 on Fri December 19, 2008 10:14 AM User is offline

Would there be any problem in adding 5 more ounces of oil just to be sure?
Thanks

TRB on Fri December 19, 2008 10:35 AM User is offlineView users profile

Quote
Originally posted by: mak11
Would there be any problem in adding 5 more ounces of oil just to be sure?

Thanks

Adding that much extra oil to a system without knowing the current oil level would cause issues. If you feel the need to add oil and don;t know the current level. One ounce is all I would suggest.


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mak11 on Fri December 19, 2008 11:32 AM User is offline

TRB
Thanks,
That will be helpful.

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