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 conventional flare tool.

Flare processing dimensions differ according to the type of flare tool.

When using a conventional flare tool, be sure to secure “dimension A” by using a gauge for size adjustment.

ØD

A

Fig. 6-2-1 Flare processing dimensions

Table 6-2-3 Dimensions related to flare processing for R410A / R22

 

 

 

 

 

A (mm)

 

 

 

Outer

Thickness

 

 

 

 

 

Nominal

 

Conventional flare tool

Conventional flare tool

diameter

Flare tool for

diameter

(mm)

(R410A)

(R22)

(mm)

R410A, R22

 

 

 

 

 

 

 

 

 

clutch type

Clutch type

Wing nut type

Clutch type

Wing nut type

 

 

 

 

 

 

 

 

 

 

 

 

1/4

6.4

0.8

0 to 0.5

1.0 to 1.5

1.5 to 2.0

0.5 to 1.0

1.0 to 1.5

 

 

 

 

 

 

 

 

3/8

9.5

0.8

0 to 0.5

1.0 to 1.5

1.5 to 2.0

0.5 to 1.0

1.0 to 1.5

 

 

 

 

 

 

 

 

1/2

12.7

0.8

0 to 0.5

1.0 to 1.5

2.0 to 2.5

0.5 to 1.0

1.5 to 2.0

 

 

 

 

 

 

 

 

5/8

15.9

1.0

0 to 0.5

1.0 to 1.5

2.0 to 2.5

0.5 to 1.0

1.5 to 2.0

 

 

 

 

 

 

 

 

 

Table 6-2-4

Flare and flare nut dimensions for R410A

 

 

 

 

 

 

 

 

 

 

 

 

Nominal

Outer diameter

 

Thickness

 

Dimension (mm)

 

Flare nut width

 

 

 

 

 

 

diameter

(mm)

 

(mm)

A

B

C

 

D

(mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/4

6.4

 

0.8

9.1

9.2

6.5

 

13

17

 

 

 

 

 

 

 

 

 

 

3/8

9.5

 

0.8

13.2

13.5

9.7

 

20

22

 

 

 

 

 

 

 

 

 

 

1/2

12.7

 

0.8

16.6

16.0

12.9

 

23

26

 

 

 

 

 

 

 

 

 

 

5/8

15.9

 

1.0

19.7

19.0

16.0

 

25

29

 

 

 

 

 

 

 

 

 

 

 

Table 6-2-5

Flare and flare nut dimensions for R22

 

 

 

 

 

 

 

 

 

 

 

Nominal

Outer diameter

 

Thickness

 

Dimension (mm)

 

Flare nut width

 

 

 

 

 

diameter

(mm)

 

(mm)

A

B

C

D

(mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/4

6.4

 

0.8

9.1

9.2

6.5

13

17

 

 

 

 

 

 

 

 

 

3/8

9.5

 

0.8

13.0

13.5

9.7

20

22

 

 

 

 

 

 

 

 

 

1/2

12.7

 

0.8

16.2

16.0

12.9

20

24

 

 

 

 

 

 

 

 

 

5/8

15.9

 

1.0

19.4

19.0

16.0

23

27

 

 

 

 

 

 

 

 

 

3/4

19.0

 

1.0

23.3

24.0

19.2

34

36

 

 

 

 

 

 

 

 

 

– 35 –

Page 34 Page 36
Page 35
Image 35
Toshiba RAV-SP1104ATZG-E Flare and flare nut dimensions for R410A, Flare and flare nut dimensions for R22, Flare tool for
Page 34 Page 36

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