superheat city Wrote:
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> freon peon Wrote:
> --------------------------------------------------
> -----
> > The fractalization issue with the 407c is in
> > regards to leakage issues. Should the system
> > spring a refrigerant leak the 407c's compound
> > would likely change radically due to the fact
> that
> > it is a blend. Full system recovery and
> recharge
> > of virgin refrigerant would be in order. R134a
> > however can be topped off repeatedly with no
> ill
> > effects.
>
>
> +1
> I recently had to shell out some serious cash to
> replace some 407c on a water cooled system. This
> same system could have easily been topped off if
> it had been built around 134a. Live and learn I
> guess but that was an expensive lesson!
You lose more than 10% of your total charge on 407c you are done! You just cant top that bitch off and expect your bubble point to be anywhere near what your p/t chart says it should be. These environmentally friendly refrigerants suck!
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