R-22 A/C explodes

[Xeon th MG Pony]

http://www.alder.co.za/raca_article.pdf

And they claim R-22 isn't flammable or explosive? Why worry about HC refrigerants When the HCFCs do just fine eh?

[killermiller]

Interesting read. Nice find.

[piotres]

Haha good 1st april joke :D

[allen41547]

Bad with the old cars on r-12 also it dont explode ive ever seen but the pressure is like an explosion if it gets a leak.

[[XC] gomeler]

Haha good 1st april joke :D

Errr. Did you even look over the PDF? I read over it and it sure sounded like a real event, not a joke. The technician did a slew of bad actions but it still shows what's possible with our systems.

[Xeon th MG Pony]

Haha good 1st april joke :D

This is not a joke, this is a second of two major explosions, I personally do not tolerate the bs on April first.

[Xeon th MG Pony]

gomeler;2885436']Errr. Did you even look over the PDF? I read over it and it sure sounded like a real event, not a joke. The technician did a slew of bad actions but it still shows what's possible with our systems.

There was another one that happend as well, I'll see if I can find it.

[ruffus]

good find thats what happens when you don't do things the right way

[godmod]

hmm, you have it from refrigeration engeneers?
i know that pdf, very "funny" is the pic with the note "there's where the man stood"...

[yngndrw]

I read most of that, upto the legal stuff.

So it's basically saying that detination can occure even with "non-flamable" refrigerants if air is allowed to enter the system ?

What gets me thinking is this:

My final comment is to NEVER run the compressor as a vacuum pump or to
attempt to use it to pressurize the system. Using any semi-hermetic or hermetic
compressor to create a vacuum, results in a lowering of the dielectric strength
of the motor insulation which could cause severe electrical deterioration or an
immediate motor failure by shorting to ground. Using the compressor to
generate pressure tends to create the situation we have been discussing.
Is that saying that the low side should never be in a vacuum, as it lowers the dielectric strength of the motor windings ?

[[XC] 2long4u]

Didn't open for me. I'm on a crappy wireless network right now.
I know R22 is flammable at a certain pressure and temperature. If O2 was in the mix I could see how that would be bad. :shocked:

[godmod]

Im not a chemist, but i think it does not explode, nor burn or anything. I think it just pyrolyses.

[{.bLanK} GoD]

Funny, that first picture shows scorch marks around the blast area.
And as 2long said, pressure + temp + oxy + oil = bang

[Xeon th MG Pony]

I read most of that, upto the legal stuff.

So it's basically saying that detination can occure even with "non-flamable" refrigerants if air is allowed to enter the system ?

What gets me thinking is this:

Is that saying that the low side should never be in a vacuum, as it lowers the dielectric strength of the motor windings ?

Thats what a few of us have been screaming here on Xs for hell who knows how long!

[star882]

http://www.refrigeration-engineer.com/forums/showthread.php?t=12306

[boshuter]

http://www.refrigeration-engineer.com/forums/showthread.php?t=12306

Shhhhh.... don't spoil it.... this is too funny :rofl:

[Xeon th MG Pony]

http://www.refrigeration-engineer.com/forums/showthread.php?t=12306

You'd think they'd be beyond such things, Oh well.

[Sweeper]

Thats what a few of us have been screaming here on Xs for hell who knows how long!

I don't understand exactly what you mean....are you saying that the low side should not be in vacumm when charged with freon. I vacuum the low and high side at the same time, then charge with freon.

[killermiller]

He is saying that the low side should not be in vacuum while the system is running. Unless the compressor is spec'd to run in vacuum, it will probably not be cooled properly and will have insufficient oil return.

[Xeon th MG Pony]

I don't understand exactly what you mean....are you saying that the low side should not be in vacumm when charged with freon. I vacuum the low and high side at the same time, then charge with freon.

They should never be RUN in a vacuum, it is poor design practice and not good for system efficiency and weakens the insulations ability.

Befor for charging OR runing it should be vacuumed to 500 or better microns.

[{.bLanK} GoD]

OK Xeon, tell me is this BS or not?
Viking on refrigeration-engineer.com/forums needs to be slapped around the head a bit.
At the very least that's slander.

[killermiller]

Vikings story is different and much less detailed. The author of that is article is also the author of a other technical articles as well.

[Xeon th MG Pony]

The main article IS real, the one from Viking is Bs.

I never even realized it was the day the idiots do stupid stunts.