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Piping treatment
z
„
•
The pipes vibrate, expand, and contract during operation, so if loads are concentrated in one
area, it could cause cracks in the pipes. Provide the pipe supports every 2 to 3m.
•
Make sure to insulate the refrigeration pipes separately with ample thickness of heat-resistant
polyethylene form etc. For the connecting portion, apply the enough insulation to avoid any gap.
EXAMPLE
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„
Brazing
z
„
While brazing the pipe, be sure to blow dry nitrogen gas through the pipes.
If not used, it will be caused to damage for compressor and clog the strainer and electronic
expansion valve.
Example) Inside state of brazing pipe section
Nitrogen gas used
Nitrogen gas used but not sufficient
(Oxygen gas still inside the pipe)
- (05-12) -
Nitrogen gas does not used
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