Samsung MXJ-HA2512 Series, Руководство по установке, Страница: 68 / 137

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3. 3.
Guideline for each installation process Guideline for each installation process
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4-7. Brazing 4-7. Brazing
1) Nitrogen substituted welding 1) Nitrogen substituted welding
(1) Perform nitrogen substituted brazing works. (1) Perform nitrogen substituted brazing works.
 
Brazing the pipe Brazing the pipe
Make sure that there is no moisture inside 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 are no foreign materials and impurities in the pipe.
Make sure that there is no leak.
Make sure that there is no leak.
Make sure to follow the instruction when b
Make sure to follow the instruction when brazing the pipe. razing the pipe.
The use of Nitrogen gas The use of Nitrogen gas
① ①
Use Nitrogen gas when brazing the pipe Use Nitrogen gas when brazing the pipes as shown s as shown
in the picture. in the picture.
② ② If you do not use Nitrogen gas when brazing the If you do not use Nitrogen gas when brazing the
pipes, oxide may form inside the pipe. It can cause pipes, oxide may form inside the pipe. It can cause
the damage of the compressor, valves.
the damage of the compressor, valves.
③ ③ Adjust the flow rate of the Nitrogen gas with a Adjust the flow rate of the Nitrogen gas with a
pressure regulator to maintain 0.05m3/h or less. pressure regulator to maintain 0.05m3/h or less.
Direction of the pipe when brazing Direction of the pipe when brazing
Performing the brazing of the pipe should be Performing the brazing of the pipe should be headed downward or horizontally. headed downward or horizontally.
Note Note
Avoid Avoid brazing brazing the the pipe pipe upward. upward.
Nitrogen substitution for prevention of Nitrogen substitution for prevention of copper pipe corrosions copper pipe corrosions