Evacuate & Recharge An AC system, Also Replace Schrader Valves

[@snwdn]

I have probably watched 20 or so videos on this topic. There is a lot of misinformation on KZbin about this procedure, but your video seems to have all the correct steps in one easy to watch place. With this, as well as the supplementary information in the comments, I think this is the most comprehensive guide for automotive AC refrigerant recovery I have seen!

[@VWtech562]

Very good video. Just a few things I noticed.. only recover from low side, if you recover from high side you will remove oil. If tank is new it must be vacuumed out. Last but not least don't use quick disconnect fittings... they just make a mess specially when there is dye in the system, it wastes refrigerant and hurts the environment.

[@Beckybitch]

Yes but the EPA considers it minimal. It considers the impact of unscrewing valves completely then rescrewing to have more potential for accidents like dropping the valves to release more refrigerant than QR. EPA states that both are minimal, just one more minimal than the other

[@ohiocountry4248]

Thanks for explaining taking the time to make an excellent video. On more than one occasion you provided helpful insights not covered in related, more played videos. These insights are exactly what I am looking so a project doesn't turn into an all day / weekend event.

[@Catchmeifyoucan209Stockton]

Well from all the researh ive done i say you made 4 critical mistakes first you should of opened both valves on recovery tank if brand new to let the Nitrogen out that its shipped with. (Atmosphere is fine with nitro) second hooked a vacuum pump to the recovery tank and let that baby rip for about 30-60min to make sure its sucked of everything you can get. Think of it as you're the tank and best BJ ever didnt miss a drop. 😉 Next purge the hoses open valves up on manifold and recovery machine leave valve on tank closed then crack open the hose to tank fitting until you get refrigerent out then tight immediately. Finally only open the low side! Leave high side shut

[@pezzoman11]

What can I do with the recover Freon. Do I put back in car or bring to a shop.

[@vityok3000]

Very important thing that was not mentioned. Every vehicle have its own refrigerant capacity. And it is very important to fill your system with exactly right amount of refrigerant for your vehicle. That the AC will work perfectly.

[@Rbenterprises4]

Good basic video. Where do you take the recovered refrigerant for recycling? Do they simply suck out your recovery tank?

[@Beckybitch]

Refrigerant recovery Google search near you should answer that. They make sure there’s no contamination (biggest one is non-mixable refrigerants), then put it back in a can that only has recovered (think recycled) refrigerant of the same type

[@ooCHICOoo]

thank you for sharing my friend great 👍 video

[@warmblood58]

I can also use a vacuum pump and a manifold set to evacuate into a recovery tank yes? Oh and ad an inline filter before recovery tank? Thanks

[@orinjackson6446]

Good video. You didn't mention about when charging the system back up .do the cans of refrigerant do they need to be straight up or upside down

[@_N_B_0496]

Hey thanks for a very informative video! Question, do you know where the oil goes from the system when the machine recovers it? I used to work at a shop and our full size machine separated it into a separate canister. Does this one do that or does it send the oil into the recovery tank?

[@Psikeomega]

So I just got my certificate so I’m gonna basically give you the textbook answer since I don’t have much experience quite yet. (More or less saying I have done this for 30 seconds and beyond the certification material I have no idea what I’m doing) Some of the oil will dissolve in the refrigerant. But most should stay in the compressor. The stuff that dissolves in the refrigerant could pool in the bottom of the recovery cylinder. There’s several hvac channels on KZbin that show cut open recovery cylinders and a few have shown how much compressor oil pools in the bottom where the dip tube doesn’t reach. Interesting stuff if you’re a nerd like me that like looking up stuff like that.

[@mrpaulvoline1978]

I have a question why not put the same freon back? Can you do that at all?

[@VWtech562]

Not really, it would be like taking a shower and collecting the water for next time. The refrigerant needs to be recycled.

[@mrpaulvoline1978]

@@VWtech562 ok. I need explanation on this ??? What makes something like the Robin air 34788 machine different than what this guy has. Filters? And a vacuum pump I know. It just seems like I can reuse the freon. I use a filter when collecting and a filter when recharge so far so good

[@VWtech562]

@@mrpaulvoline1978 I'm on the same Page as you are. I've asked myself the same question. I use a Robinair roll around machine at work and all I do is replace the filter after 150 hrs. But how good that filter works when recovering refrigerant on burned-out compressors? In my opinion you would also need a refrigerant identifier to make sure there is no air or contaminated refrigerant before putting it back in.

[@Beckybitch]

In a practical sense, yes. But part of taking it to a recovery center is them making sure only the correct refrigerant is there. If not, they separate it. Should you have a machine that analyzes it and you know it’s good. I don’t know of a reason why you can’t do that. Except that maybe you need to have a certain certification to say it’s properly recovered? Not sure

[@SWFLJetSkiRiders]

Does the pag oil goes with the freon?

[@jeffreyharbin5211]

throw it directly into the line before adding refrigerant can/tank

[@johnpaulgarrett1]

Fantastic information!

[@orabates1823]

If that is a brand new recovery tank then you would first need to purge the nitrogen out and then draw a vacuum on it.

[@Urs4]

Yes but this seems to be "empty"...

[@japanacjapanac9797]

Good video

[@billiebowling7755]

New systems are very very temperamental 2 + 4 - any amount of refrigerant

[@marcbrown8834]

I don't understand..you recover R134A into the tank, and why don't you use the same tank, R134A, to charge the System? I see you using a 12oz two-can instead

[@kylecartier2484]

Didn't purge the air out for the second can so you introduced a whole line full of air into the system.

[@carlosgraphic]

Not really, he has a valve on the can, when the first can is empty the valve is closed and the hose is airtight, no need to purge for a second can.

[@ICUISMILE]

Recovery and recharge the whole system just for replace Schrader Valves ? You are in the top 10 of the backyard certified refrigeration in the world chief 😂

[@marianmarzec-autotechnic9798]

Shiet 👀

[@billiebowling7755]

Inaccurate way to determine how many ounces of refrigerant was introduced

[@KR-uk1mz]

Gloves??? sheesh.... Burns and Cancer causing chemicals!!!

[@KR-uk1mz]

burns, And cancer

[@jbroseann1]

So we're gonna go ahead, we're gonna go ahead, we're gonna go ahead, we're just gonna go ahead. How many times can we repeat one sentence?!!! Shame because it's a good video. I just can't understand why todays Americans have to repeat that sentence all the time. It's annoying.

[@lisacortez8079]

Your annoying He was fine!!