SystemAir Mini C Series, Manual

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Warning
Never flow oxygen through piping as doing so aids oxidation and could easily lead to explosion and as such is
extremely dangerous.
Take appropriate safety precautions such as having a fire extinguisher to hand whilst brazing.
Flowing nitrogen during brazing
Use a pressure reducing valve to flow nitrogen through copper piping at 0.02-0.03MPa during brazing.
Start the flow before brazing starts and ensure that the nitrogen continuously passes through the section being
brazed until the brazing is complete and the copper has cooled down completely.
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When joining a shorter section of piping to a longer section, flow nitrogen from the shorter side to allow better
displacement of air with nitrogen.
If the distance from the point where nitrogen enters the piping to the joint to be brazed is long, ensure that the
nitrogen is flowed for sufficient time to discharge all the air from the section to be brazed before commencing
brazing.
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