[AT] Air conditioning problems In my parts getter...

[Brad Loomis]

In the trade one always uses nitrogen. Co2 has moisture, bad in sealed
systems. Of course you're supposed to evacuate to <500 microns but...
I once had a13oz. R-12 system that I never found the leak. From 150psi
nitrogen to my brand new, then, Inficon leak detector.
Check your Schraders after you put the caps back on. You may be surprised.
Why I preferred leak finding after I moved to NH3. Easy, save for having to
cut the skin off a double stainless jacketed 155,000 gallon tank. But the
leaks were always in the same areas.
Brad

On Fri, Jun 11, 2021, 10:31 AM Steve W. <swilliams268 at frontier.com> wrote:

> Cecil Bearden wrote:
> > Steve:
> >
> > I will check into it.  Some of the tractors have some leaks I can't find.
> > Cecil
> >
> >
>
> The bigger shops are using nitrogen for testing because the sniffers are
> cheaper and it does work, but I have CO2 on hand for the welder so why
> have a bunch of extra bottles to pay for.
>
> I've found a lot of leaks just using the cheap bubble fluid you can get
> in the dollar stores. Doesn't have all the extra stuff like a dish soap
> has and it creates larger bubbles.
>
> --
> Steve W.
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