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Connecting the Refrigerant Pipe
Welding copper pipe
Make sure that there is no moisture inside the pipe.
Make sure that there is no foreign substance inside the pipe.
Make sure that there is no leakage.
Make sure to follow the instruction while welding the copper pipe.
Fill nitrogen
1. Use nitrogen while welding the copper pipe, as shown in the figure.
2. If nitrogen is not used while welding the copper pipe, oxidation may
be produced inside the pipe, causing damage to the compressor and
valve.
3. Use pressure gage to adjust the filling speed and keep it within
0.05m
3
/h.
Pipe direction upon welding of copper pipe
Place the marked side downward or on the level position while welding the copper pipe.
Downward
Avoid welding pipe upward.
NOTE
Side
ENGLISH-14
Brazed part
Nitrogen
ø6.35 (1/4") Copper pipe
Pressure
gage
Upward
Wrap with belt
Stop valve
Flow meter
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