I think I want to open my AC system...

BLKTOPTRVL · 04-26-2008, 04:44 PM

Since it is already pressurized (134a), shouldn't we be able to attach a tank to the line and have it evacuate into the tank without a vacumn pump?

dregg100 · 04-28-2008, 11:46 PM

once you attatch the tank the pressure will equalize between the system and the tank. it wont just magically suck it out (not trying to be a smart ass)

BLKTOPTRVL · 04-28-2008, 11:57 PM

Not looking for magic. If there is pressure in the system and 0 in the tank, or better yet, if the tank has a vacuum, then attaching the tank should draw some if not all of the volume from the system.

Then I can just take it to the local ac shop and have the tack evacuated and a new vacuum applied to the tank. If I have to do this two or more times to lower the pressure in the system to where it is insignificant; that's OK with me.

ratboy · 04-29-2008, 12:18 PM

A little trick I learned is to cool the tank you want the refrigerant to go into. Surround your evac tank with dry ice and that should get most of it but you may lose a bit...

BLKTOPTRVL · 04-29-2008, 01:09 PM

Quote:

Originally Posted by ratboy

A little trick I learned is to cool the tank you want the refrigerant to go into. Surround your evac tank with dry ice and that should get most of it but you may lose a bit...

Thanks, where did you get a tank?

I don't care if I lose any fluid/gas; it is R134 and I can get that anywhere. (If it were R12 I certainly would be trying to recover all I can). I just don't want to release the gas into the air.

scrubolio · 06-10-2008, 11:21 PM

^ i'm trying to do the same thing, i thought only 95 converted to R134?

did you ever find where to get a tank and how to remove the freon?

BLKTOPTRVL · 06-11-2008, 08:24 AM

Never found a tank for a reasonable price (< $150). Mine was R12, Converted years ago to R134.

04-26-2008, 04:44 PM	#1
BLKTOPTRVL Rotary Fanatic Join Date: Feb 2008 iTrader: (0) Posts: 192 Rep Power: 17	I think I want to open my AC system... Since it is already pressurized (134a), shouldn't we be able to attach a tank to the line and have it evacuate into the tank without a vacumn pump? __________________ ...shoot a mother-humpin moose, eight days of the week... Last edited by BLKTOPTRVL; 04-26-2008 at 04:52 PM..

04-28-2008, 11:46 PM	#2
dregg100 Rotary Fanatic Join Date: Feb 2008 iTrader: (2) Posts: 432 Rep Power: 17	once you attatch the tank the pressure will equalize between the system and the tank. it wont just magically suck it out (not trying to be a smart ass) __________________ '93 SSM Touring-S475... '87 Tii-LS1/T56

04-28-2008, 11:57 PM	#3
BLKTOPTRVL Rotary Fanatic Join Date: Feb 2008 iTrader: (0) Posts: 192 Rep Power: 17	Not looking for magic. If there is pressure in the system and 0 in the tank, or better yet, if the tank has a vacuum, then attaching the tank should draw some if not all of the volume from the system. Then I can just take it to the local ac shop and have the tack evacuated and a new vacuum applied to the tank. If I have to do this two or more times to lower the pressure in the system to where it is insignificant; that's OK with me. __________________ ...shoot a mother-humpin moose, eight days of the week...

06-11-2008, 08:24 AM	#7
BLKTOPTRVL Rotary Fanatic Join Date: Feb 2008 iTrader: (0) Posts: 192 Rep Power: 17	Never found a tank for a reasonable price (< $150). Mine was R12, Converted years ago to R134. __________________ ...shoot a mother-humpin moose, eight days of the week...

04-29-2008, 12:18 PM	#4
ratboy Rotary Fan in Training Join Date: Feb 2008 Location: Austin, TX iTrader: (0) Posts: 35 Rep Power: 0	A little trick I learned is to cool the tank you want the refrigerant to go into. Surround your evac tank with dry ice and that should get most of it but you may lose a bit...

06-10-2008, 11:21 PM	#6
scrubolio Rotary Fan in Training Join Date: Mar 2008 iTrader: (0) Posts: 30 Rep Power: 0	^ i'm trying to do the same thing, i thought only 95 converted to R134? did you ever find where to get a tank and how to remove the freon?