Samsung AVXTJ series Guía de instalación descargar pdf (Pagina 68)

3. Guideline for each installation process

4-7. Brazing

1) Nitrogen substituted welding

(1) Perform nitrogen substituted brazing works.

 Brazing the pipe

• Make sure that there is no moisture inside the pipe.

• Make sure that there are no foreign materials and impurities in the pipe.

• Make sure that there is no leak.

• Make sure to follow the instruction when brazing the pipe.

The use of Nitrogen gas

① Use Nitrogen gas when brazing the pipes as shown

in the picture.

② If you do not use Nitrogen gas when brazing the

pipes, oxide may form inside the pipe. It can cause

the damage of the compressor, valves.

③ Adjust the flow rate of the Nitrogen gas with a

pressure regulator to maintain 0.05m3/h or less.

Direction of the pipe when brazing

• Performing the brazing of the pipe should be headed downward or horizontally.

Note Avoid brazing the pipe upward.

Nitrogen substitution for prevention of copper pipe corrosions

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Samsung AVXTJ series Guía de instalación Pagina 68