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Old 04-05-2011, 06:12 PM   #16
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Tired of getting screwed...


It's true this is a DIY site but I agree with the poster that suggested you get an HVAC course under your belt before tackling this project.

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Old 04-05-2011, 06:20 PM   #17
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You need to filter the refrigerant during recovery, in addition to purge the holes or You will contaminate the entire system. A lot simple important steps.
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Old 04-05-2011, 06:49 PM   #18
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You need to filter the refrigerant during recovery, in addition to purge the holes or You will contaminate the entire system. A lot simple important steps.
Don't filter the refrigerant. Recover and use new. Use a high pressure cylinder and only fill up to 80%.
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Old 04-05-2011, 09:18 PM   #19
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I don't see where you have the guage adaptors......your original contractor didn't either

Why wait until 70deg???????
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Old 04-05-2011, 09:42 PM   #20
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Thanks for all your responses. I have a 50# recovery tank. The refrigerant went in properly and has only sat in the lines, so I am sure its uncontaminated. The system was filled with nitrogen to begin with. Its illegal to sell compressors filled with freon online unless you have a cert.

I will get that cert before I do anything. I didn't know it was illegal. I thought I can do it if its my own house. I am following rules. I am leaking no gas into the atmosphere so there should be no problems. I have all the tools I need including adapters. I have watched all the docs videos on youtube. Its the small steps that he doesn't explain that I need to verify.

If my steps are correct, then I guess all I need to know is when to stop recovery. Logic tells me to do so once I start to pull a vacuum, which I can read on my gauges.
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Old 04-05-2011, 09:43 PM   #21
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I don't see where you have the guage adaptors......your original contractor didn't either

Why wait until 70deg???????
Just want to get it done before it gets too hot.
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Old 04-05-2011, 09:53 PM   #22
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you really think you can learn this profession by watching you tube?! you gotta be kidding me! what if your schrader sticks open.... then what?! you dont learn that from you tube! Its not just following the steps.... its knowing the steps and what can happen when they are not followed and what can happen if something goes wrong and what to do if something does go wrong. Get a pro or the correct education (4 years with in the field experience)..................enough said. BTW, check with Marion county (guessing since you said indy) see if the install doesn't need to be checked by county inspector and if a permit needed to be pulled for the install.
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Old 04-05-2011, 09:54 PM   #23
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Anything under 0 should be fine

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Thanks for all your responses. I have a 50# recovery tank. The refrigerant went in properly and has only sat in the lines, so I am sure its uncontaminated. The system was filled with nitrogen to begin with. Its illegal to sell compressors filled with freon online unless you have a cert.

I will get that cert before I do anything. I didn't know it was illegal. I thought I can do it if its my own house. I am following rules. I am leaking no gas into the atmosphere so there should be no problems. I have all the tools I need including adapters. I have watched all the docs videos on youtube. Its the small steps that he doesn't explain that I need to verify.

If my steps are correct, then I guess all I need to know is when to stop recovery. Logic tells me to do so once I start to pull a vacuum, which I can read on my gauges.
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Old 04-05-2011, 10:02 PM   #24
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Thanks for all your responses. I have a 50# recovery tank. The refrigerant went in properly and has only sat in the lines, so I am sure its uncontaminated. The system was filled with nitrogen to begin with. Its illegal to sell compressors filled with freon online unless you have a cert.

I will get that cert before I do anything. I didn't know it was illegal. I thought I can do it if its my own house. I am following rules. I am leaking no gas into the atmosphere so there should be no problems. I have all the tools I need including adapters. I have watched all the docs videos on youtube. Its the small steps that he doesn't explain that I need to verify.

If my steps are correct, then I guess all I need to know is when to stop recovery. Logic tells me to do so once I start to pull a vacuum, which I can read on my gauges.
Every time you hook up a hose to any machine or connection, always purge (let a bit of freon out, usually done by unscrewing the yellow hose or whichever hose is connecting to the new connection until it actually is misty freon and not just hissing and invisible so maybe two seconds) so as to not allow any air into the system. Now if the system was not properly vacuumed to begin with and has air in it and you recover the refrigerant and put it back into the system then you will have problems. Since we don't know that the original installer was any good as you are having problems, I'd toss the new/old and buy new and start from scratch.

This can become quite expensive.

Any questions and I'll be glad to assist, I understand what it's like to have shotty boneheads screw people around, hvac or not.

Last edited by Doc Holliday; 04-05-2011 at 10:06 PM.
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Old 04-05-2011, 10:10 PM   #25
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If your recovery tank is not brand new, pull a vacuum on it first if you have no choice but to recover and re-use the old refrigerant. You can actually shoot some nitrogen into the tank, not much as in let's say a few psi as in 10, dump that after about 15-20 minutes (no need to be earth friendly with nitrogen, our atmosphere is mostly made up of it so no harm) and pull vacuum on the tank itself to make sure it is clean of any other possible (possibly burnt/contaminated) refrigerants that were once in it.
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Old 04-05-2011, 10:12 PM   #26
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Right on doc. I appreciate.

Tech... If I broke a shrader, I would recover the freon, and replace the shrader. I did not learn that on youtube. That is common sense. I didn't learn anything from youtube. This is not rocket science. I shadowed the install, and asked questions on every step, and went from there. The only thing he did wrong was not weigh in the charge. No permit is needed, as it is my home, and no one needs to inspect. If my neighbor sees me leaking freon, then I could get in trouble, but that is not going to happen. I just didn't wake up today and decide to install a AC system. I have been planning and studying for weeks now. The steps I outline are not copy pasted from a website. Those are my ideas which I wrote with my knowledge of the system.

Last edited by Gary in WA; 04-05-2011 at 11:59 PM. Reason: broke site rules
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Old 04-05-2011, 10:25 PM   #27
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BEFORE you braze the unit in, remove the shraeder valves from the service ports. This would be done after the line set and/or compressor is empty and is done so as to not burn up the plastic rings on the shraeders. Happens all too often if left in, causing leaks.

Once the copper is cooled off enough, about ten to fifteen minutes air cool or you can wrap the connections in a drenching cold water wet rag once done to cool it off so then one to two minutes, and you are ready to pull a vacuum is when you re-install them.
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Old 04-05-2011, 10:27 PM   #28
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I take that back, you are not going to be brazing...or are you?

If you have a leak you will be needing to.
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Old 04-05-2011, 10:29 PM   #29
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stick you hand in the refrigerant and get burnt........its not something you just decide to do or plan for a few weeks....Best of luck! Ensure you have checked your county laws on HVAC permits that need pulled when installing or replacing equipment. The thing about Indiana is that the counties have the laws on the books and it is specific counties that require codes be followed and be enforced.

No it is not rocket science! However, I think you taking the road of being uneducated in the field and basically saying that any moron can do this. I have seen the installs where morons have tried this field and seen the results as well. More than that I believe there are rules and regulations in place for a reason and should be followed. I'm not trying to short change your knowledge, but only want you to realize the potential for things to not go as planned and you need to be prepared. The only way to be prepared is to either have the experience under you belt from being in the field or have someone knowledgeable on site. Best to be on the side of safety. Refrigerant can harm you!

My thoughts only......... Just don't like you cutting the industry down and those of us who have invested years into becoming the best techs out there.
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Old 04-05-2011, 10:40 PM   #30
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Right on doc. I appreciate.

Tech... If I broke a shrader, I would recover the freon, and replace the shrader. I did not learn that on youtube. That is common sense.
To touch up on what tech 126 is saying and your lack of experience, if you broke a shraeder there would be no freon to recover, it would blast out of the port via the broken shraeder quicker than you could blink an eye.

That would actually be commmon sense.

Ask and research some more.

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