Refrigeration Help

[red-fin]

Can anyone tell me what I can use to put a charge of freon in my walk in cooler at the lease? It says it has R-12 in it now on a yellow sticker on the expansion valve? Thanks so much.

[Txjourneyman]

You need a set of gauges and a bottle of R12

[red-fin]

Is R-12 still available?

[Txjourneyman]

Yes, but it has gotten VERY spendy!

[thegrouse]

They make drop in replacements for R12. I think you can also get the stuff at an autoparts store you can just add into the system. I believe we used to replace it with R409a. It has been awhile though. Make sure you have a manifold guage set. Charge into the suction line until you get a clear sight glass. That is a general method of course but if you have an expansion valve I am sure you have a reciever to hold the extra freon.

[red-fin]

Thanks for the help.

[Team me]

R134 is the replacement for R12 but you can't mix them. R12 is expensive. Cars that took R12 have retrofit kits to R134a. I have one small can of it but it was for a car. I would have to check onto it a little more. The oil has to be compatible of you use something else or will ruin the compressor.

[thegrouse]

The replacement stuff is called Freeze 12. I have never used it but I seen it out there.

[Team me]

http://www.aa1car.com/library/tr497.htm

Here ya go bro

[airehead]

R-409A is A direct drop in no oil change I have used it on walkin coolers and sandwich coolers

Ron