Note, nitrogen was not used during the brazing process. I HIGHLY recommend brazing with nitrogen to keep the pipes clean and protect the TXV. However, this particular job was not mine but my fellows techs.

@chrissipple1018

10 ай бұрын

Nitrogen is only as good as it is clean. Most nitrogen is quite dirty and even with clean nitrogen you will still get some copper oxide build up. I know I use to fill gas cylinders.

@borshardsd

10 ай бұрын

No judgment, you're right it's best practice but field practices happen. Plus it's not a mini split ;) it'll survive

@stevenpollock6342

9 ай бұрын

nitrogen is to stop copper oxide inside the pipe same as plumbers use flux when welding we use nitrogen to stop flakes occuring in pipework as this will cause a restriction

@borshardsd

9 ай бұрын

@@stevenpollock6342 no way! I thought we used it for exercise

@chrissipple1018

9 ай бұрын

@@stevenpollock6342 Nitrogen only helps to cut down on copper oxide, it does not eliminate it completely. and it depends if the nitrogen is clean or not. I use to fill gas cylinders and if not asked for you may get your gas in a dirty cylinder, meaning that there may be other gases still in the cylinder.

🎵 Gangstas make the world go round……. 🎵 👍🏽

Those compressors are the biggest mistake Copeland ever made, but that's what Trane wanted. The next time you come across a Trane scroll compressor pull the sticker off. Under the Trane sticker it use to have a Copeland sticker.

nitrogen is massive also wet rag or heat block went installing driers

@EZHVAC

9 ай бұрын

Agreed!

Is the guy using the torch an apprentice? Sure looked like it. It should never take that long to unsweat and braze in the new compressor. Either turn the flame up or use a rosebud tip. Always flow nitrogen when brazing or unbrazing. Don’t know what the people below are talking about but I’ve done experiments with brazing with or without nitrogen and every joint that I flowed nitrogen on, when I split the pipe open with tin snips it was perfectly clean on the inside, no oxides no scale. The ones I brazed without were full of flakes and scale that can plug up metering devices, check valves and any small orifices in the system. It doesn’t always happen but why not use best practices to ensure that it doesn’t ever happen. Western Enterprises makes a regulator with a braze, purge, and test setting all you have to do is change the dial to the setting you need and go to work. It’s the regulator I use and I’ve had it for years with no issues. It’s the Western Enterprises VN-500.

@vincentgelles3805

9 ай бұрын

Not trying to sound critical but if people are going to film their work and post it for thousands to see, they should definitely be using proper practices.

@EZHVAC

9 ай бұрын

Awesome! I will look into that!

Rosebud tip would have been a better choice tip. IMO

@EZHVAC

10 ай бұрын

I agree! Unfortunately the tech sweating the compressor in didn’t have one on him at the time

Should have used a bigger tourch tip

Grave it closer to flame 🤦🏽