Preparing a New RECOVERY BOTTLE for the HVAC Service Truck!
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- Опубліковано 16 жов 2024
- In this HVAC Training Video, I Show How to Prepare a New Recovery Tank for Service by Releasing the Nitrogen, Vacuuming to 300 Microns, and Breaking the Vacuum with Refrigerant from Another Full R-22 Recovery Bottle. I Show How To Know What Refrigerant is in the Bottle and How to Know if it's Contaminated! Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
Tools Used In The Video
CPS 4 CFM Vacuum Pump - amzn.to/2DxgPwY
CPS Vacuum Micron Gauge - amzn.to/2v1nM3O
Yellow Jacket Gauge set & hoses amzn.to/2vLVkV9
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⚠️ Disclaimer:
Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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#hvacr #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #recoverybottle #vacuum #vacuumpump #recoverytank #recoverybottle #r22 #refrigerant #microns #nitrogen
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Thank you for posting this video. It's clear and timely. It also convinced me to go ahead and buy that vaccum gauge. Looks like cheaper options can't be trusted.
In my case, I pull my recovery tanks down to under 100 microns. Yes I also break the vacuum with refrigerant asap, im not sure the tank valves are vacuum rated.
Let me add something here if you have a vacuum pump from Harbor freight the 2.5 CFM it's gonna take 4 1/2 weeks to vacuum your tank
Thanks for sharing your wonderful video it’s full of great information. So much knowledge. Everything is well explained. Thanks Craig
How would your procedure differ if you didn't have a full recovery cylinder to bleed into the new one under vacuum. Would i be correct to assume i would start recovery with the new tank under vacuum, bleed my hose with pumped refrigerant coming from the recovery machine or compressor, then slowly open the new tank to accept the recovered refrigerant? Thank you so much for your attention to detail in all of your videos. I have learned a great deal!
Great job, thank you brother. You are so talented
Please can you explain on recovery cylinder red and green color valve what's working differently ?
Have you done a episode on component ( or additional circuits) that are supposed to extend the life of a compressor? Do they really work?
Good practices but I mean really only takes 10 minutes.. thanks Craig 👍
Great video Craig thank you for the information
Glad you enjoyed it
thanks for the great practical knowledge
If I follow this process I can use the recovered refrigerant in the same system for service correct
I keep learning so much from your videos
Usually when pick those up from the supply house it’s already in a vacuum, useful video however
Glad I watched this.
Anytime we prepared a tank it was ready for use,nice to know though !!! 😉
🍺🍺🍺🥃🥃🍿🏌🏻♀️
Stay safe.
Retired (werk'n) keyboard super tech. Wear your safety glasses!
WOW, excellent video . Muchas gracias
TNX again for another great video, avid follower here.
Great video. Good information. Thank you for sharing
I thought Blue went to the bottom of the tank, the low side, while the Red, the high side, has no drop tube. Liquid verses Vapor. Never seen a tank where Liquid was Red. Just heard of them.
Thank you, thank you, thank you
Where did you get that hose!! I need one with 1/4' female flare both ends. Cant fine it anywhere.
Thanks for your videos.
Thank you you are very clever.
Why is it bad to leave the tank in a vacuum for a few days?
Good chance tank may be compromise.
What happens if you run the vacuum pump to liquid line and vacuum gauge to vapor port while pulling vacuum?
Great video!
Good video. Why did you fill the cylinder in pulses and not continuously?
Thanks.
He was just trying to get the pressure just over 0 psi, but the gauge he used to check the psi was the gauge that was filling the tank. So the pressure goes up when adding the refrigerant, and when he stops adding it it reads the tank pressure.
@@The-H-inADHD Thanks for the clarification. Appreciate.
@cck1496 sorry I was a year late! lol
Good video. Why shouldn’t you store the tank under a vacuum though?
Because the vacuum will decay - it’s easier to maintain a positive pressure on a tank where the vacuum was broken w refrigerant that to keep that vacuum.
One reason could be that the tank valves aren’t vacuum rated
Why must you set the units to Microns as opposed to using other units such as inches of mercury?
Would it be better to, let's say the morning of recovery, to do the same process, but not break the vacuum with the already recovered refrigerant? Instead wouldn't it be better to break the vacuum with the refrigerant from the system you are recovering from in order to lower the recovery process time? It just seems like a little bit of rework rather than just keeping the nitrogen charge. Love your videos, and have learned SO much, just thought i'd ask the question. Thanks.
That's what I thought, no reason to break vacuum
He said he was doing it because the bottle would be stored for some time.
@@RandomRepairGuy So why can't it be stored with a vacuum?
exactly what i was thinking why cant we just store it with the positive nitrogen charge its the same purpose as the positive refrigerant charge seems like a waste of time
Will your books prepare someone for the EPA 608 Type II exam?
Epa answers are certainly weaved through the book and it will definetly help any reader do better on the epa test but its not a test prep book specifically for the test. This is about all the procedures we use in the field, thanks!!
@@acservicetechchannel Ok thank you
Question
When I exchange a bottle from JOHNSTONE supply the bottle that I’m given does it have a vacuum on it or do I need to pull a vacuum on it
New from supplier with nitrogen charge? All my tanks come in a vacuum already
As always something new to learn, thanks teacher for such as wonderful videos, .
Good evening from Greece. I have been watching your channel for a long time and thank you for what you have taught me. I want to ask you a question if you know and can you help me. I'm looking for the adapter you have on the pressure gauge. Do you know where I can find it? Thank you and keep up the good work.
Amazon...Yellow Jacket 19110 Ritchie Quick Coupler
@@warenmann1042 Thank you, you are awesome. I just ordered it.
Ο καλύτερος δάσκαλος φίλε
@@ΒασίληςΜπάκας-χ4χ πολύ καλός. Μήπως έχεις πάρει το βιβλίο του?
im gonna guess you did this to reuse r22 in the same system. bc nobody does this for just recov....hell, with that tank in a vacuum, itll pull a good 3 or so pounds out wo the recov machine even on.
thanks for this video, what if i left some nitrogen inside the tank and just vaccume it, will nitrogen ruin the overall quality of my refrigerant R410a and make it unusable ? thanks
Yes
Yes
@@user-hu4hx6bm6m but i did a deep vaccume, i wait until under 250 Microns, i really don't want to waste my 10lbs of r410a, you know how expensive it is ?
@@stevengao8345 if you vacuumed it to 250 then obviously the positive charge of nitrogen is gone so you are good
You vacuumed out the nitro.
Where did you get the other yellow hose from 🤔
Can a recovery machine be used in place of a vacuum pump so that only one pump machine is needed?
Absolutely not.
What about on a hotter day?
How long it takes to pull vaccum below 500micron with 7cfm vaccum ?
I have tez8 appion pump
Are you able to use that same pump for the extraction of the freon in the refrigerator?
No it will break the vacuum pump. You'll need a recovery machine
That (pump) he used was a "recovery machine". The machines are rated for different refrigerants. If the machine matches the refrigerator refrigerant then yes.
@@wiley0714 shown in his video is a vacuum pump, not a recovery machine.
so u dont have to pull the moisture out from the blue and yellow hoeses or even use a filter drier?
He used a filter dryer.....
When he purged the hoses with refrigerant the filter dryer would absorb the moisture....
How and where can I purchase that hose?
Im a little confused on Where you read that the tank was just above zero?
he's using the blue gauge to see when it rises above 0
Is this needed to recover Car AC System Freon 134a? Got same tank but none of the car recovery videos show vacuum the tank, only bleed air from lines. In my case whatever I recover will take in for recycling, I am not re-using what comes out of the car but new freon.
EPA regulations state your must recover the refrigerant.
You can also take an EPA609 online class and be certified to do that.
Why do I need to break vacuum, seems unnecessary at all.
What do you mean they come charged with nitrogen. I thought they were under vacuum. hahah
My new recovery tank has a "rattle" sound inside.
I did vacuum it to about 350 microns.
Why does it rattle. Anyone wanna help me on that one.
Its a legal DOT approved brand. Not an Amazon special aka Vevor tank.......?????
I messed up somehow I think I pulled vacuum pump oil into my tank
Why wouldn't you leave the recovery bottle in a vacuum.
Because if there was a leak in the valve stem or the inner valve seal over time it was slowly leaking wet moist atmospheric air contaminating the bottle.
Then later when you get out to your building that you need to recover refrigerant you would contaminate the refrigerant with that atmospheric moist air.
Air is a non-condensable
Moisture is a contaminant that causes acid, expansion valve freeze ups, breakdown of refrigerant oil.
@@coldfinger459sub0 i understand that, but a leaking bottle is a leaking bottle. If it had refrigerant it would leak out as well. If it pulls a good vacuum and holds then you know it doesn't leak. I have tanks in a vacuum. When recovering it pulls the refrigerant fast from the system. Its all about pressure differential. I know my tanks are sealed, because i pull a vacuum on them whenever i use a new one. Its not like i sit on tanks for months at a time. In commercial/ industrial your systems hold big amounts that usually fill the bottle, so im constantly getting new bottles.
@@jasonjohnsonHVAC Yes I constantly have nearly 40 bottles between 30 pounders and 50 pounders and 240 pounders
It’s easy not to have a leak under vacuum the difference between a complete vacuum and atmospheric pressure is only 14.7 psi depending on your refrigerant when you have even one drop or 20 pounds of liquid refrigerant it could be 70 psi or 220 psi at room temperature.
And if it’s the recycle containers we turn in for exchange they often have bad shaft seals on the handles when you mid seat them during your vacuum or pressure and usually you cannot tell under vacuum they leak until you front seat them all the way down.
And he’s only filling it to just above zero psi.
So there’s only 14.7 psi difference between your system pressure in the cylinder you’re about to fill with nearly no mass because you have zero liquid in the new cylinder.
And if you were going to reuse the refrigerant and put it back into the customers system you would rather have 0% chance of a vacuum leak taking in air noncondensibles and moisture.
Then if you had the slightest leak if you were at one or two psi positive with refrigerant so what if it leaked out it’s negligible when you go to use your tank at least it doesn’t have moist atmosphere mixed in that you’re about to re-introduced back into the customers unit.
In my local region we have Plax Air and Airgas. As our suppliers in our local refrigerant warehouse distributors.
To cut corners on cost and time and materials they used to come pre-charged with nitrogen now they deliver us cylinders that are under vacuum.
And because their seals are not perfect you often discover The seal has leaked and now you have a tank full of air.
And if you send one of your employees or yourself on a job and you’re near $300 an hour your technician now have to break out a vacuum pump terret up on the roof that he already has his tank that he just discovered had a vacuum leak and vacuum it down before recovering refrigerant.
It’s happened to me and many other people on several occasions that’s why we do not leave the cylinders stored under vacuum.
Either storage under positive pressure refrigerant or positive pressure nitrogen.
And when you’re pulling a vacuum on your refrigerant cylinder and discover you cannot get below 100 µm it’s probably because the packing in the shaft seal of the valve is leaking.
So while it’s under vacuum pulling down and you discover the situation you put a little silicone grease or a little nail log around the valve stem of the handle screw it down a little bit and you’ll see the vacuum leak disappear and you continue on pulling your cylinder down well below 100 µm.
I store mine vacced and ready for several days with no ill effect so I’m not sure why you’re saying not to
Why use 1/2" hose?
how to buy ac tech book sir? where i can buy for that.? im in the Philippines..
Meron siyang ebook version sa link niya. Its 229 pages long i believe.
I need this booklet in Pakistan
One and done if you hit it with liquid.
what you mean?
Very interesting
I accidentally put a little r404a into my r134a tank yesterday 🤦♂️
how did you end up fixing that? curious i am in tech school for hvac
@@ethanwaddell3005 I don’t remember, I also don’t remember writing this or doing it. Lol.
did he just say ooopen?
How is freon R22 still available ? :/
It’s only available as old stock, it’s no longer available in the US. There are substitute refrigerants available to keep old R-22 systems running with a currently produced refrigerant that is less costly than old stock or recovered R-22.
👍
yeah and then you go and recover contaminated r22 from a customer who already used several backyard mechanics defeating the purpose, but thanks, good video anyways
First
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