PUT A/C oil high or low pressure side? - Page 3 - PeachParts Mercedes-Benz Forum

brewtoo · #31 08-22-2009, 12:57 AM

Quote:

Originally Posted by Chas H

An air compressor would be a good comparison. If the outlet of the compressor is not connected to a tank, just venting to the atmosphere, there is very little pressure made.

I believe the question is about the compressor. Whether it is vented or not is irrelevant. It is still a compressor. The compressor compresses the refrigerant gas in an AC. The expansion valve does not compress the refrigerant, it simply meters the (now condensed liquid) compressed refrigerant into the evaporator.

Reminds me of an old saying...

For those who understand, no explanation is necessary.
For those who do not understand, no explanation is possible.

Have a nice day.

#32 08-22-2009, 08:34 AM

Quote:

Originally Posted by brewtoo

I believe the question is about the compressor. Whether it is vented or not is irrelevant. It is still a compressor. The compressor compresses the refrigerant gas in an AC. The evaporator does not compress the refrigerant, it simply meters the (now condensed liquid) compressed refrigerant into the evaporator.

Reminds me of an old saying...

For those who understand, no explanation is necessary.
For those who do not understand, no explanation is possible.

Have a nice day.

VERY GOOD!

whunter · #33 08-22-2009, 01:20 PM

Quote:

Originally Posted by baudenfj

However, there is now confusing information on the thread..

From my perspective of doing the job and risking the compressor I am perfectly happy to turn it after I have added the oil that is the question...

I am putting in a new dryer and compressor and just replaced the evaporator!

I flushed the condenser and as many hoses I could get too without disconnecting the evaporator again..
The manual says add 120 milliliter to the compressor and 10 ml to the dryer which I planned on doing. The big question now is

COULD there be enough oil in the hoses to cause too much oil in the system to be ineffective!

I would appreciate some constructive contributions

I would need some answer pretty quick since I need to get my A/C going to get my wife of my back in this TN heat ...

thanks and cheer up...

FYI:

to flush or not to flush A/C ?
to flush or not to flush A/C ?

Mineral Spirits as A/C Flush?
Mineral Spirits as A/C Flush?

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Question: COULD there be enough oil in the hoses to cause too much oil in the system to be ineffective!

Answer: If the system was flushed correctly, the answer is NO......

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Thank you for the new data (in bold).
You should need to replace the full oil charge.