I really like how you showed how to purge that machine after the recovery process. I’ve always wondered if there was a way to clean out those machines if we are using them for different refrigerants. But that closing the valve and letting the machine run a minute into the tank to purge seems like a good option. Thanks for the video!
Thanks brother! I am in the automotive field, yet found this video to be incredibly helpful! So much helpful information. And most of the HVAC can be directly applied to automotive if you know what you are looking at. Thank you for taking the time to describe how to properly perform these functions. I watched all 3! Great job man! Liked and subbed!🤟
Congratulations to you for this wonderful achievement and the beautiful explanation. I have a request for you. I want a practical video on how to convert a split system from a 22 system to a 410 gas system.
@DClough that is very true, but this particular video wasn't made for that it was made to help the students that were just learning with that particular set of gauges that they had at the time. If you want a better way to do it, you need to watch my video on doing it with no manifold.
Great video, I had to subscribe and and loved that you explained why you're doing what you're doing so the new guys can get the full understanding on the process. Would you nitrogen test before vacuuming the system for charging?
Life long carpenter playing hvac at home.I have a provax recovery machine.4 line 2 guage manual guage.I have followed along best as I could as my machine is different then yours..I have no idea how to read the gages on the manifold really or what the gages on the machine mean.I do the purge as my manual explained.I do not get any liquid spray when opening tank a bit yo see just air comes out.My tank is 14 lbs.I set my knobs for recovery mode flip the compressor switch..It starts and runs for maybe 1 or 2 minutes then compressor shuts off but machine is still on cooling fans running but the compressor should run longer correct? Tank weight went to 14.5 lbs
No it's an automatic safety feature you need to purge the line at the tank and then once you're sure there's liquid coming out you can open up the valve on the tank and then the machine will start back up for you.
Well, you need a recovery tank, too. But (not shown] you could also do passive recovery and not use a machine at all and just use the AC's compressor do the pumping. Assuming it's operational.
@@rogerbrown5563 not sure what you mean by this. The vac pump puts EVERYTHING into the atmosphere. But hopefully the recovery got all the refer out first.
Correct. You must recover as vapor. In residential it's mostly vapor if the unit has been sitting but big chillers contain lots of liquid. But there is a more important reason for recovering as vapor from a chiller. If you pull the refrigerant out too fast, the remaining refrigerant will expand and absorb heat thus freezing the water in the chiller and potentially damaging the chiller. Also, always keep the water flowing or drained when recovering a chiller.
Recovery machines typically have standard compressors in them. So they're incapable of pumping liquid so recovery is always coming out of the system as vapor but then it condenses in the recovery machine and puts it into the recovery tank as liquid.
@@Catchmeifyoucan209Stockton nope. the machine is basically just a condensing unit It pulls it out as vapor condenses it into liquid and then puts it into the can.
I really like how you showed how to purge that machine after the recovery process. I’ve always wondered if there was a way to clean out those machines if we are using them for different refrigerants. But that closing the valve and letting the machine run a minute into the tank to purge seems like a good option. Thanks for the video!
I got my finally exam tomorrow and this by far has been the most helpful video ever ive found. I salute you sir 🫡
Very good information coverd things other people skip .... thanks
Good job buddy 👏 👍 really helpful video
Thanks! 👍
Thank you brother very well explained we appreciate this great knowledge
Thanks and I appreciate you. I'm actually filming a couple more videos today that I should be able to get posted in the next week or so, stay tuned.
Thanks brother! I am in the automotive field, yet found this video to be incredibly helpful! So much helpful information. And most of the HVAC can be directly applied to automotive if you know what you are looking at. Thank you for taking the time to describe how to properly perform these functions. I watched all 3! Great job man! Liked and subbed!🤟
Hell yes. Man. Thank you.
Excellent video. Best one on UA-cam I’ve found
Thank you. I'd love a sub.
Congratulations to you for this wonderful achievement and the beautiful explanation. I have a request for you. I want a practical video on how to convert a split system from a 22 system to a 410 gas system.
You cannot change out r-22 to r-410a
Yes you can. But you have to change the equipment too you can't put 410A in r22 equipment.
@@hvacjames509 Thank you brother, I wish you success
I was always taught the more connections you add between you and your condenser the more possible leak points you have
@DClough that is very true, but this particular video wasn't made for that it was made to help the students that were just learning with that particular set of gauges that they had at the time. If you want a better way to do it, you need to watch my video on doing it with no manifold.
Excellent attention to detail.
very well explained video keep it up I'll be watching the next videos
Thank you.
Excellent video. Well explained 👏
Thank you
Best UA-camr out there
Thank you for your videos and information so cool 😂😂
Excellent work
Great video, I had to subscribe and and loved that you explained why you're doing what you're doing so the new guys can get the full understanding on the process. Would you nitrogen test before vacuuming the system for charging?
Only if you suspect a leak or you just installed it. And thanks for the sub.
Nice work
Life long carpenter playing hvac at home.I have a provax recovery machine.4 line 2 guage manual guage.I have followed along best as I could as my machine is different then yours..I have no idea how to read the gages on the manifold really or what the gages on the machine mean.I do the purge as my manual explained.I do not get any liquid spray when opening tank a bit yo see just air comes out.My tank is 14 lbs.I set my knobs for recovery mode flip the compressor switch..It starts and runs for maybe 1 or 2 minutes then compressor shuts off but machine is still on cooling fans running but the compressor should run longer correct? Tank weight went to 14.5 lbs
No it's an automatic safety feature you need to purge the line at the tank and then once you're sure there's liquid coming out you can open up the valve on the tank and then the machine will start back up for you.
Awesome. Thank you.
Do you of to use a recovery machine to recovery the refrigerant? Nth else.
Well, you need a recovery tank, too. But (not shown] you could also do passive recovery and not use a machine at all and just use the AC's compressor do the pumping. Assuming it's operational.
I know that we don't want air into the refrigerant but why not vac instead of purging so that zero refrigerant goes to atmosphere?
@@rogerbrown5563 not sure what you mean by this. The vac pump puts EVERYTHING into the atmosphere. But hopefully the recovery got all the refer out first.
Sir if I recover liquid direct from condenser of chiller.
compressor of recovery machine may be damaged???
Correct. You must recover as vapor. In residential it's mostly vapor if the unit has been sitting but big chillers contain lots of liquid. But there is a more important reason for recovering as vapor from a chiller. If you pull the refrigerant out too fast, the remaining refrigerant will expand and absorb heat thus freezing the water in the chiller and potentially damaging the chiller. Also, always keep the water flowing or drained when recovering a chiller.
❤❤❤❤❤
How well do those JB manifold gauges hold up? I’m thinking of getting them since I’m only starting out and just got out of school
Don't do it. They're garbage. I only used them because that's what my students had that year. Spend the extra money and get good ones.
@@hvacjames509 what do you think of CPS manifold gauges ?
Yellow Jacket are pretty good
when u started charging i thought u put the tank upside down when u start? that how it's taught in my class.
If it's a virgin tank, then yes. But recovery tanks have a dip tube, so you can get liquid out without turning it upside down.
When you recover what are you recovering, liquid or vapor?
Recovery machines typically have standard compressors in them. So they're incapable of pumping liquid so recovery is always coming out of the system as vapor but then it condenses in the recovery machine and puts it into the recovery tank as liquid.
@@hvacjames509 so would you just open the manifold gauge on the low side. If you open both wouldn’t that be both vapor and liquid? Thanks.
@Sc19869 Only if it's running. If it's off, pressure will equalize and it'll be all vapor.
I thought the maachine put it into vapor
@@Catchmeifyoucan209Stockton nope. the machine is basically just a condensing unit It pulls it out as vapor condenses it into liquid and then puts it into the can.
Are You In Florida ???
No. Washington.
14:55 IF LEAKING IN THE MACHINE, THERE WOULD BE AIR GOES INTO TANK
If I screw it up after watching this, then I'm real stupid
Did you screw up? 😂