17
Pipe brazing instructions and cautions
Keeping refrigerant pipe clean and dry
X To prevent foreign materials or water from entering the pipe, it is important to keep the refrigerant pipe clean, dry and
sealed during installation.
Exposure place Exposure time Sealing type
Outside exposure
Longer than one month Pipe pinch
Shorter than one month Taping
Inside exposure - Taping
Brazing the pipe
X Make sure that there is no moisture inside the pipe.
X Make sure that there are no foreign materials and impurities in the pipe.
X Make sure that there is no leak.
X 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 don’t use Nitrogen gas when brazing the pipes, oxide may form
inside the pipe. It can cause the damage of the compressor and valves.
3. Adjust the ow rate of the nitrogen gas with a pressure regulator to
maintain 0.05m/h(1.77ft/h) or less.
Direction of the pipe when brazing
• Performing the brazing of the pipe should be headed downwards or
horizontally.
Brazing part
1/4" copper pipe
Stop valve
Taping
Pressure regulator
Nitrogen gas
Flowmeter
Refrigerant piping
ki]_TW]`WZhTW\pttj|GrniluRmyUGGGX^ YWYYTXXTYYGGG㝘㤸G_a\_a\`
To Next Page
Loading...
Need help?
General
