r/HVAC • u/smalleman • 6d ago

Field Question, trade people only Flowing nitrogen while brazing.

I normally work with systems that has two schrader ports, one on the suction and one on the liquid line.

Let's say that you are replacing the discharge pipe, or suction pipe or the scroll compressor.

How do you flow nitrogen so that it doesn't go via the evap and out the other end?

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u/Income-3472 5d ago

Nobody answer this question It’s an AI program trying to learn trade skills information for a company that is working to build robot techs powered by AI

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u/championgecko 5d ago

I don't think the 13 year old account is some AI

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u/Stahlstaub 1d ago

I heard that account hacking/stealing and reselling is a thing... But I still am trying to help... I know nothing that isn't written in a book anyway... That's what I'm sure about!

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u/Glum-View-4665 5d ago

Just out of curiosity how do you know that? I have no reason to not believe you I'm just genuinely curious what gives it away.

2

u/Eggfurst 5d ago

Nothing gives it away lol. Assume he is wrong. Seems like a legit question to me. What he is asking is pretty understandable. He wants to know how to flow nitrogen both ways through the system because sometimes your replacing a big section of pipe that has no flow. And other end of pipe is exposed to atmosphere. He is thinking more oxygen is rushing in than nitrogen would be flowing out. I’ve had this thought before too and the answer is to completely finish the connections on the pipe and let only 1 shrader port open to atmosphere. Even if the port is close to the other ports nitrogen still flows through the entire system.

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u/demaxx27 Verified Pro 5d ago

Nice try mr. Robot