<VV> A/C Question

[FrankCB]

Jim,
     The only way to keep out air and the accompanying moisture is to open up the system in a perfect vacuum!  Otherwise, when the system is restored, it has to undergo a long period of time at near perfect vacuum using a special A/C vacuum pump to make sure ALL the air/water vapor is removed BEFORE adding any refrigerant.  If your system has any pressure in it, I'd advise NOT opening it up to the air.
     Frank "needs A/C" Burkhard



In a message dated 08/08/09 11:16:46 Eastern Daylight Time, jhouston001 at cfl.rr.com writes:
Be careful if the system is still pressurized!  Crack one of the lines 
and slowly loosen it -- if it starts hissing, look around and make sure 
there aren't any EPA Nazis around and let it leak out...  when all the 
pressure is gone, undo the hoses.  NOTE: SEAL THE ENDS OF THE HOSES - 
TAPE, PLUGS, WHATEVER -- YOU DO NOT WANT AIR AND MOISTURE TO GET INTO 
THE SYSTEM WHILE IT'S DISCONNECTED!!!!  Do the same to the 
compressor...  If you let the system depressurize slowly, you won't blow 
all of the oil out... 

Jim Houston