Introduction to the refrigerant recovery machine.
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- เผยแพร่เมื่อ 21 ส.ค. 2024
- This one begins the series on refrigerant recovery machines. This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. If you have suggestions or comments they are welcome.
If you are a homeowner looking to repair your own appliance, understand that the voltages can be lethal, the fuels are highly flammable and high pressures are used. Know your limits.
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I am new to this and used to skip comments, but your answers are just as valuable. If I can make a comeback, I will have you to thank more than anyone. Thanks a million!
Welcome
GFM
Yes, and a great thing about GFM's videos is that they don't come with a lot of boilerplate, disclaimers, "footnotes"... just "here is the equipment and here's how to use it" . Refreshing.
Use of any of these comments is entirely the responsibility of the user. (lol)
GFM
+hg2
*withOUT a lot of...
Good little machine. I use an Amprobe Promax that looks just like that one. The machines may be small and light, but those yellow cylinders are heavy when full! Thanks for another good video GFM.
Set up recovery machine first, go do all your other stuff while it's running. Braze lines, install vacuum- go do other stuff. Definetely using time wisely that way. Standing around waiting on a recovery machine is laziness. Good video.
indeed!
Very Cool. Can't wait for the receovery info.
GFM, thanks for this video. I will be looking forward to more on this as I am learning HVAC.
good video, I find that it's good to get the suction pressure and discharge pressure as close to equal before starting that way the unit doesn't have to fight against a large pressure differance and it doesn't complain.
***** Good point.
GFM
Jim Pettinato. And how exactly are you suppose to do that without running it.
Great video can't wait for the next one.
Wow that reminds me of the machine that I made back in the day I still have it. I will make a video clip of it and explain how it works if you would like to see it
I would like to see it
Yes. Send me the link.
GFM
ok will do I will put it on my channel in a day or two I will send you the link
grayfurnaceman ok I made the clip but its not working the whole link thing just type in hardcooling and its the last clip I made hope you like it
Andys Mechanical ok made it type in hardcooling hope you like it
Thanks for more information...
Welcome
GFM
Last place I worked with we had some of these machines failing...now that you are talking about not recovering with liquid....everything make sense...maybe that was the problem because we used to recover liquid with those machines all the time.
Great video GFM! I was laughing when you said technicians could make there own back in the day. I bet there were some unique designs LOL.
Thanks again look foreword to the next video.
There were no real standards and portable could have meant anything!
GFM
Can you do a video on running liquid straight into a bottle without machine?
That filter drier is a liquid line filter isn't it? Do you leave it on even when you recover vapor? Is there a difference between liquid and suction line filters other than the size of the fittings. Thanks.
Grayman so are you saying its safer only to recover in vapor, and if so how much longer would it take if you were recovering a residential split system with say 11 pounds of refrigerant. I looked up and they dont sell the stinger anymore, but they have an updated version.
Hi GFM just has a question about the refrigerant contamination. If I use a recovery machine for two different refrigerants, do I need to flush the recovery machine between two applications? Like if I recovered R410a for a split system, did some work on it and put the refrigerant back. Then need to pull r134a from a vehicle.
I would flush with the refrigerant I will be using in the next unit.
GFM
grayfurnaceman okay cheers
Keep em coming GFM!! I'm learning alot.
BTW What kind of compressors do they usually have in recovery machines? reciprocating or rotary?
Great advice, question how is the oil removed from ac systems? for example maybe from an automotive system?
I am not expert on automotive systems. From the units I have worked on, there is very little oil in these units. On the order of 5 oz. As the system is designed for the oil to circulate, I am not sure there will be much oil in the compressor. What there is you can drain by removing the compressor, removing the low side tap and drain it from there. Hope this helps.
GFM
Are u pulling freon from the vapor port of the recovery tank , and pumping vapor to the vapor side of the system and letting liquid be sent to the liquid side of the recovery tank.
I'm not sure how your reclaiming liquid. You can't run it true the pump. That would slug the compressor on your recovery mechine.
good intro gfm
ok I will make the clip in a day or two
the thing i dont understand if you pull r410 as vapor wouldnt the refrigerant would not be good cause r410 is a mixture of refrigerants and if u have a leak on a r410 system would the refrigerant would be bad? or would it be good to use on a system?
If you remove all the refrigerant, both refrigerants in the blend will be removed and the refrigerant is good. I always replace the refrigerant when I remove it from the unit. It is not worth the risk of contamination or blend separation.
GFM
grayfurnaceman.👍
If machine works like condenser does this mean refrigerant leaves the recovery machine liquid phase ? If so why do we hook up to vapor side on the recovery tank? there are two ports on recovery tanks Vapor and liquid If I am not mistaking.
The refrigerant does leave the machine as a liquid. The liquid and vapor valves are only for removing refrigerant from the cylinder. When adding refrigerant, either valve can be used. Hope this helps.
GFM
I got it thanks.
@@grayfurnaceman llllll
From what I see, the Asian countries still let all their refrigerant to the atmosphere. Why?
In explaining theory, I failed my Exam..I prefer practical :)
more practic then talking!
Very informative. But very slow and monotonous. Gets boring or tiresome to listen to.
I would think the manufacturer of the recovery mechine would not have instructions on recovery of liquid in there
Oners manual. The manufacturer has to worenty the pump for at least 1-3 years. Why would they publish liquid recovery.
Please explain your self.
The recovery machine is indeed able to recover liquid. That does not mean it cannot be damaged. I and my coworkers destroyed dozens of these machines before the manufacturers built in some protection and service techs learned some methods to keep these things alive. In my later years of recovery, I used the same machine for 10 years. If you watch the entire series, you will see my methods for recovering refrigerant without destroying the recovery machine.
GFM