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

[Mike M]

Friend of mine holds his certification as an unlimited tonnage
journeyman pipe fitter.  He's not keen on the 401a says too high of
pressures and too many leaks. I was talking to him the other day, and he
had just fixed a 1000 ton chiller.

Mike M

On 6/12/2021 11:55 AM, Steve W. wrote:
> Cecil Bearden wrote:
>>
>>
>> R1234y, and it is expensive.  I imagine it is developed by Dupont and
>> they need to get their money back.  The patents ran out on 134, so
>> they had to bring in something expensive again. It is also flammable,
>> So, why couldn't propane be usuable for refrigerant??  It is also
>> flammable..  But a lot cheaper....
>>
>> Cecil
>
> Now Cecil, you can't say that, they brought out R1234YF to save the
> planet for the little children.  Just because the patent expired on
> 134A and Dupont was pushing to replace it with the newly patented
> material had nothing to do with it. Shame on you for thinking they
> only want the money, it's to save the planet... LOL
>
> This question actually came up at one of the classes on this crap a
> while back, the "Save the planet" answer was the party line, but most
> of us had been through the same BS back when R-12 was dropped and
> commented that at least then Dupont was honest and said that they were
> pushing R134a due to the patent issue.
>
> The one trick is that if the price on the 1234yf doesn't drop a lot,
> there are likely going to be many conversions to R134a. If you pull
> the R1234yf out, fully flush the system and swap out the drier to be
> sure you got all the oil you can recharge with PAG and R134a and have
> the system work just fine as the two are almost identical in
> operational characteristics.
>
> Just don't get caught because the EPA has tagged R1234yf differently,
> it's now considered as part of the emissions system on the vehicles
> that use it because the companies were handed carbon offsets for using
> it. So swapping it out is now a violation of the Clean Air Act.
> The fines start at about $10,000.00 after they are done dragging you
> through the system.
>
> As for propane, there was an Australian, Ian MaClaine-Cross pushing
> his hydrocarbon based replacement as a drop in for R12 who managed to
> blow himself up on camera, during a demonstration showing just how
> safe it was.
> https://www.youtube.com/watch?v=k0K1WPCWm2k
>
> The resulting charges over it -
> https://vasa.org.au/wp-content/uploads/2011/11/2005-May.pdf
>
>
> Other MACS demonstrations of the same type -
> https://www.youtube.com/watch?v=FO47SzxJmV0
>
>


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