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TM5-4120-376-14
5-10. BRAZING.
WARNING
Purge system with dry nitrogen prior to soldering. Refrigerant heated to
1200°F (649°C) creates phosgene gas.
a. Preparation for Brazing.
(1) Cut tubing using a tube cutter.
(2) If not perfectly round, size the end of the tube with a sizing tool.
(3) Clean the ends of the tubing with crocus cloth or wire brush. Do not under any
circumstances use sandpaper, emery cloth or steel wool for this purpose.
(4) Flux female end (larger end) of tubing.
(5) Slip tubing into fitting until it seats properly.
5-12
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