ENGLISH-32
Refrigerant pipe installation
Cutting or aring the pipes
1. Make sure that you prepared the required tools.
Pipe cutter, Deburring tool, aring tool and pipe holder, etc.
2. If you want to shorten the pipe, cut it with a pipe cutter ensuring that the cut edge remains at 90° with the side of the
pipe.
Refer to below illustrations for correct and incorrect examples of cut edges.
90°
Oblique
Rough Burr
3. To prevent a gas leak, remove all burrs at the cut edge of the pipe using a Deburring tool.
4. Carry out aring work using aring tool as shown below.
A
Flaring bar
Pipe
Yoke
Flaring bar
Pipe
Flare nut
Clutch type Wing nut type
[Flaring tools]
Pipe diameter
[D (mm)]
Depth of aring part [A (mm)]
Using aring tool for
R-410A
Using conventional aring tool
Clutch type Wing nut type
Ø 6.35 0~0.5 1.0~1.5 1.5~2.0
Ø 9.52 0~0.5 1.0~1.5 1.5~2.0
Ø 12.70 0~0.5 1.0~1.5 1.5~2.0
Ø 15.88 0~0.5 1.0~1.5 1.5~2.0
5. Check that you ared the pipe correctly.
Refer to below illustrations for correct and incorrect examples of ared pipe.
Uneven ThicknessCrackedDamaged SurfaceInclined
Correct
• If foreign matters or burrs are not removed after cutting pipe, refrigerant gas may leak.
• If foreign matters enter inside the pipe, important interior parts of the unit may get damaged or product
eciency will be reduced. So, the direction of pipe should be downward during pipe cutting or aring.
CAUTION
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