c)Insertion of Flare Nut

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 conven- tional flare tool.

Flare processing dimensions differ according to the type of flare tool. When using a con- ventional flare tool, be sure to secure “dimen- sion A” by using a gauge for size adjustment.

ØD

A

 

 

 

 

 

Fig. 2-2-1 Flare processing dimensions

 

Table 2-2-3 Dimensions related to flare processing for R410A

 

 

 

 

 

 

 

 

 

 

 

 

 

Outer

 

 

 

 

 

A (mm)

 

 

Nominal

Thickness

 

 

 

 

 

 

 

 

 

 

 

 

Conventional flare tool

diameter

Flare tool for R410A

diameter

(mm)

(mm)

 

 

 

 

 

 

clutch type

Clutch type

Wing nut type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/4

6,35

0,8

 

0 to 0,5

1,0 to 1,5

1,5 to 2,0

 

 

 

 

 

 

 

 

 

 

3/8

9,52

0,8

 

0 to 0,5

1,0 to 1,5

1,5 to 2,0

 

 

 

 

 

 

 

 

 

 

1/2

12,70

0,8

 

0 to 0,5

1,0 to 1,5

2,0 to 2,5

 

 

 

 

 

 

 

 

 

 

5/8

15,88

1,0

 

0 to 0,5

1,0 to 1,5

2,0 to 2,5

 

 

 

 

 

 

 

 

 

 

Table 2-2-4 Dimensions related to flare processing for R22

 

 

 

 

 

 

 

 

 

 

 

 

 

Outer

 

 

 

 

 

A (mm)

 

 

Nominal

Thickness

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

diameter

Flare tool for R410A

Conventional flare tool

diameter

(mm)

(mm)

 

 

 

 

 

 

clutch type

Clutch type

Wing nut type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/4

6,35

0,8

 

0 to 0,5

0,5 to 1,0

1,0 to 1,5

 

 

 

 

 

 

 

 

 

 

3/8

9,52

0,8

 

0 to 0,5

0,5 to 1,0

1,0 to 1,5

 

 

 

 

 

 

 

 

 

 

1/2

12,70

0,8

 

0 to 0,5

0,5 to 1,0

1,0 to 2,0

 

 

 

 

 

 

 

 

 

 

5/8

15,88

1,0

 

0 to 0,5

0,5 to 1,0

1,0 to 2,0

 

 

 

 

 

 

 

 

 

 

 

Table 2-2-5 Flare and flare nut dimensions for R410A

 

 

 

 

 

 

 

 

 

 

 

 

Nominal

Outer

Thickness

 

 

Dimension (mm)

 

Flare nut

diameter

 

 

 

 

 

 

 

width

diameter

(mm)

A

 

B

 

C

 

D

(mm)

 

 

 

(mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

– 8 –

Page 8
Image 8
Toshiba RAS-13YKV-E Dimensions related to flare processing for R410A Outer, Thickness Conventional flare tool, Width