DC INVERTER MULTI VRF INSTALLATION
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4）Cut·Chamfer
Cut
Cut vertically to axis direction by using special pipe cutter that is suitable to the dimension of
copper pipe (big, medium, small).
During operation, press and rotate the pipe cutter slowly and cut off the copper pipe without
causing any deformation.
Never use saw or grinding wheel, because the copper scraps may be left inside the pipe. Even use
of such tools once will make all works scrapped. It is useless no matter how good the quality of
other works. It is best that all operators shall have one pipe cutter and at least one pipe cutter of
big dimension shall be provided on site.
CAUTION:
To prevent the invasion of water or waste, avoid placing the copper pipe directly on ground.
Chamfer
Burrs may occur on the cutting face of copper pipe and must be removed. Meanwhile, purge the
foreign articles out of the pipe and refinish the pipe end.]
● Use scraper or other tools to remove the burrs on inner side.
(To prevent copper scraps from falling into the pipe, please keep the pipe end downward during
operation).
● If the pipe end is obviously deformed, please cut and throw it off, and then refinish the pipe end.
● Eliminate the copper scraps thoroughly, and use cotton yarn to wipe the pipe clean.
The flared j※ oint must be kept smooth.
When removing the burrs with scraper, do not remove too much, especially for the fitting pipe of ※
small diameter; otherwise the contact surface of the flared joint will be reduced. Do not cause any
scores, and avoid cracking after the flared joint is formed.
Adverse impact if the burrs are removed too much with scraper:※
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