Mitsubishi SRK63ZEA-S1, Техническое руководство

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d) Flare processing
Make certain that a clamp bar and copper pipe have been cleaned.
By means of the clamp bar, perform the flare processing correctly.
Use either a flare tool for R410A or conventional flare tool.
Flare processing dimensions differ according to the type of flare tool. Be careful. When
using a conventional flare tool, be sure to secure “dimension A” by using a gage for size
adjustment.
øD
A
Fig.3 Flare processing dimensions
Table 5. Dimensions related to flare processing for R410A
Nominal Outer diameter Thickness
A (mm)
diameter (mm) (mm)
Flare tool for R410A
Conventional flare tool
Clutch type
Clutch type Wing nut type
1/4 6.35 0.8 0~0.5 1.0~1.5 1.5~2.0
3/8 9.52 0.8 0~0.5 1.0~1.5 1.5~2.0
1/2 12.70 0.8 0~0.5 1.0~1.5 2.0~2.5
5/8 15.88 1.0 0~0.5 1.0~1.5 2.0~2.5
Table 6. Dimensions related to flare processing for R22
Nominal Outer diameter Thickness
A (mm)
diameter (mm) (mm)
Flare tool for R410A
Conventional flare tool
Clutch type
Clutch type Wing nut type
1/4 6.35 0.8 0~0.5 0.5~1.0 1.0~1.5
3/8 9.52 0.8 0~0.5 0.5~1.0 1.0~1.5
1/2 12.70 0.8 0~0.5 0.5~1.0 1.5~2.0
5/8 15.88 1.0 0~0.5 0.5~1.0 1.5~2.0
Fig.4 Relations between flare nut and flare seal surface
45
° ~46
°
B A
43
°
~45
°
C
D
Table 7. Flare and flare nut dimensions for R410A
Nominal Outer diameter Thickness
Dimension (mm)
Flare nut width
diameter (mm) (mm)
A B C D
1/4 6.35 0.8 9.1 9.2 6.5 13 17
3/8 9.52 0.8 13.2 13.5 9.7 20 22
1/2 12.70 0.8 16.6 16.0 12.9 23 26
5/8 15.88 1.0 19.7 19.0 16.0 25 29
[unit: mm]