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. 7-2-1 Flare processing dimensions

Table 7-2-3 Dimensions related to flare processing for R410A

 

 

Outer

 

 

 

 

 

 

 

A (mm)

 

 

 

Nominal

 

Thickness

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

diameter

 

Flare tool for

Conventional flare tool

diameter

 

 

(mm)

 

 

(mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R410A clutch 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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3/8

9.5

0.8

 

0 to 0.5

 

 

1.0 to 1.5

 

 

1.5 to 2.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/2

12.7

0.8

 

0 to 0.5

 

 

1.0 to 1.5

 

 

2.0 to 2.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5/8

15.9

1.0

 

0 to 0.5

 

 

1.0 to 1.5

 

 

2.0 to 2.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 7-2-4 Dimensions related to flare processing for R22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outer

 

 

 

 

 

 

 

A (mm)

 

 

 

Nominal

 

Thickness

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

diameter

 

Flare tool for

Conventional flare tool

diameter

 

 

(mm)

 

 

(mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R22 clutch type

Clutch type

Wing nut type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/4

6.4

0.8

 

0 to 0.5

 

 

0.5 to 1.0

 

 

1.0 to 1.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3/8

9.5

0.8

 

0 to 0.5

 

 

0.5 to 1.0

 

 

1.0 to 1.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/2

12.7

0.8

 

0 to 0.5

 

 

0.5 to 1.0

 

 

1.5 to 2.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5/8

15.9

1.0

 

0 to 0.5

 

 

0.5 to 1.0

 

 

1.5 to 2.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 7-2-5 Flare and flare nut dimensions for R410A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nominal

 

Outer diameter

Thickness

 

 

Dimension (mm)

 

 

Flare nut

 

 

 

 

 

 

 

 

 

diameter

 

(mm)

 

(mm)

A

 

B

 

C

 

D

 

width (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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

– 53 –

Page 53
Image 53
Toshiba RAV-SM1402UT-E, RAV-SM1102UT-E Flare tool for Conventional flare tool, R410A clutch type Clutch type Wing nut type

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