PeachParts Mercedes-Benz Forum - View Single Post - How long can the AC drier be open before it's shot?

whunter · #15 07-23-2009, 12:21 AM

Quote:

Originally Posted by Chad300tdt

I'm flushing the AC system in my TD tomorrow and need some advice.

Should I leave the drier capped until just before the R12 charge or can I make all the connections and take it to the garage where it will be charged.

How long is too long for the drier to be open without getting the system charged with refrigerant?

Make all the connections and take it to the garage where it will be charged.

Question: How long is too long for the drier to be open without getting the system charged with refrigerant?

The answer is variable with atmospheric and enviornmental conditions:
* Extreme humidity conditions (99%) require longer vacuum to remove moisture, the reverse is also true.
* Do not allow particles (dust/dirt/etc) into the system.

Do NOT worry yourself into an ulcer, a good vacuum pump will remove the moisture.

Automotive Air Conditioning Systems
http://www.familycar.com/ac1.htm

Aircondition.Com
http://aircondition.com/knowledge_base/Home.html

Have a great6 day.