the vintage air instructions call for 1.8lbs of r134a or approx 28 oz. how do you fill accuratly when r134a only comes in 12 oz cans? can you weigh it on a digital scale? what am i over looking here? one the previous car's install i filled based on the low side psi reading but i dont know how much of the third can i used. i was tying to be a little more accurate on this install. I have found 14 oz cans of r134a+ but this is not reccomended to use correct?
V/Air has a very good tech line. You might try them. BUT, I would think putting the can on a scale should do it too. You are aware there is a tool called a charging cylinder that you fill with refrigerant & it has a heating coil in the bottom to force it out & you can see the level of it? Be sure the charge amount you are going by is for that particular application. A small variable, in the liquid side especially, will have a marked effect on the charge needed.
28 oz. would be two full cans and a 1/3 of a third can. Its not gonna be extremely critical.If you dont have gauges, go till the low pressure switch stops kicking the compressor out and you have put a little less than 1/2 of the third can in. Charges vary, if you ran an extra foot of hose it will hold a little more if not it stores in the reciever or accumulator.
put 2 full cans in and a little from the 3rd can and fergeddaboutit... just make sure you have that system vacuumed down properly first or it won't cool well at all.... get some gauges...
If you have a chance, please call me @ 1.800.862.6658 ext.111 so we can discuss how to charge your Vintage Air system, I am the Tech Support Dept for Vintage Air and would be happy to answer any questions. The charge in a R134a system is very critical if you want the system to work properly. A couple tenths of a pound can effect the system performance. If you cannot call, at least go to our web site - www.vintageair.com and download the "Installers Guide" and "Trouble-Shooting Guide" from the Download section. This will give you charging info, refrigerant amounts, proper pressure readings, etc. Thanks, Mark Vintage Air Tech Support
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