Ferrari Mailing List: Re: Anybody got knowledge about AC recovery systems

[Peter Rychel (dino308gt4]

It looks like that unit will work for what you want to do, but in the series of pictures for it, it does show that you will need a “container”, ie: a high pressure tank to store the refrigerant once it’s been evacuated from the system. Basically, an empty - fresh, unused -propane bottle will work. Our cars don’t use a lot of refrigerant, so one or two small bottles will suffice.

You are going to have to bite the bullet and switch over one day. It really isn’t that big of a deal to switch out the R12 to one of the replacements. I don’t see what the fuss is about continuing to use it.

Peter

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From: Ferrari <ferrari-bounces+dino308gt4=hotmail.com [at] ferrarilist.com> on behalf of Anthony Bauco <tbauco [at] gmail.com>
Sent: Monday, August 22, 2022 5:49:20 AM
To: PeterGT4 <dino308gt4 [at] hotmail.com>
Cc: The FerrariList <ferrari [at] ferrarilist.com>
Subject: Re: [Ferrari] Anybody got knowledge about AC recovery systems

 

I am not an HVAC expert but, if your system is still at positive pressure and nothing has failed, the R12 is probably clean.  If it is clean, you should be able to reuse it.

On Mon, Aug 22, 2022, 7:41 AM BRITT ROTHMAN via Ferrari <ferrari [at] ferrarilist.com> wrote:

I think that there is a misunderstanding about what I am asking. 

I have R12, the system is full and I need to replace the expansion valve. I don’t want to waste my R12. I literally just filled the system with 2.4 precious kg of the stuff. I only have about 8 kg left I think so I need it to last for a few more years. 

So I want to drain it out, do the work and then put it back in. I think the recovery unit I posted a link to is what I need ( plus a spare tank) but was wondering if anyone had done this? Any tricks to consider? I have a vacuum pump to empty out the new storage tank, maybe some filtration as well? 

Anybody have an opinion? I’m not swapping to R134a until I am forced to. I think I can buy the equipment for about 800 dollars to be able to recover the R12 but any thoughts about reusing it again?

BR in Stockholm 

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On 22 Aug 2022, at 10:55, Robert W. Garven Jr. <rgarven [at] gmail.com> wrote:


Psycho Las Vegas 

I think if you have an older system it’s already leaked out if it’s been longer than a year since you refilled it. I think it’s a waste of time to keep these AC systems working in the older units. My advice is keep everything in order but don’t recharge it or use it. It’s 115 here in Las Vegas they’re out of water and electricity if you live somewhere with you have either one of them your lucky and roll the window down and be happy!

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On Aug 21, 2022, at 2:11 PM, Peter Rychel <dino308gt4 [at] hotmail.com> wrote:



Paging Robert Garven… He actually has HVAC certification! Ha!

Not sure if it’s worth the effort to keep R12. When I rebuilt the A/C system for my GT4, I ran “Duracool” through it and it worked quite well - for what it was, a 1970s Italian A/C system. Duracool is a propane-based refrigerant I believe, but the biggest draw for me is I can get it off-the-shelf at numerous auto stores here. In the long run, it doesn't matter because the stuff - any of it - will leak out anyways! The older York-based compressors use simple shaft seals that only provide one contact surface to retain the refrigerant. It eventually seeps past. If you're lucky, the 512 may be using a rotary style compressor with multiple contact seals, but don't count on that to last a long time. 

Other than deteriorating hoses, the shaft seal is the area where refrigerant can leak out. Make sure that is viable before doing any of this work.

Peter

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From: Ferrari <ferrari-bounces+dino308gt4=hotmail.com [at] ferrarilist.com> on behalf of BRITT ROTHMAN via Ferrari <ferrari [at] ferrarilist.com>
Sent: Sunday, August 21, 2022 1:18:08 PM
To: PeterGT4 <dino308gt4 [at] hotmail.com>
Cc: The FerrariList <ferrari [at] ferrarilist.com>
Subject: [Ferrari] Anybody got knowledge about AC recovery systems

 

Hi guys,

Does anyone have knowledge of AC recovery systems? Basically, I need to drain the r12 from the car to change the expansion valve. I don’t want to lose the R12. I can’t goto a commercial operator because they don’t want R12 and it’s illegal to put back in the car.

I want to buy the equipment to drain the system into a tank and then pump it back in when the repair is made. I have a good AC vacuum pump but it’s not going to work to do this so what do I need to buy? It should be simple, a pump to pull it out and stick it in a container. I think I can buy a container here in Sweden ( they aren’t cheap and I don’t see a way to air fright such a think so I have to buy it here) but what about the pump. 

Is that what a machine like this does? Anybody have any experience in this?

https://eur.vevor.com/recovery-machine-c_10323/vevor-portable-refrigerant-recovery-machine-3-4-hp-single-cylinder-air-condition-p_010743194216?gclid=Cj0KCQjwr4eYBhDrARIsANPywChQC_ddjmM9J_XnSxkGic9wOy-GjcMPpyRYTP0-QCEJMhug9-pSYtgaAl76EALw_wcB

BR in Stockholm

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