Toshiba RAV-SM2246AT8J-E Service Manual page 43

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.
Table 6-2-3 Dimensions related to flare processing for R410A / R22
Outer
Nominal
diameter
diameter
(mm)
1/4 6.4
3/8 9.5
1/2 12.7
5/8 15.9
3/4 19.1
Nominal Outer diameter
diameter
1/4
3/8
1/2
5/8
3/4
Nominal Outer diameter
diameter
1/4
3/8
1/2
5/8
3/4
Thickness
Flare tool for
(mm)
R410A, R22
clutch type
0.8 0 to 0.5
0.8 0 to 0.5
0.8 0 to 0.5
1.0 0 to 0.5
1.2 0 to 0.5
Table 6-2-4 Flare and flare nut dimensions for R410A
Thickness
(mm) (mm)
6.4 0.8
9.5 0.8
12.7 0.8
15.9 1.0
19.1 1.2
Table 6-2-5 Flare and flare nut dimensions for R22
Thickness
(mm) (mm)
6.4 0.8
9.5 0.8
12.7 0.8
15.9 1.0
19.1 1.0
Fig. 6-2-1 Flare processing dimensions
A (mm)
Conventional flare tool
(R410A)
Clutch type Wing nut type
1.0 to 1.5 1.5 to 2.0
1.0 to 1.5 1.5 to 2.0
1.0 to 1.5 2.0 to 2.5
1.0 to 1.5 2.0 to 2.5
1.0 to 1.5 2.0 to 2.5
Dimension (mm)
A B
9.1 9.2
13.2 13.5
16.6 16.0
19.7 19.0
24.0 —
Dimension (mm)
A B
9.1 9.2
13.0 13.5
16.2 16.0
19.4 19.0
23.3 24.0
– 43 –
ØD
A
Conventional flare tool
(R22)
Clutch type Wing nut type
0.5 to 1.0
0.5 to 1.0
0.5 to 1.0
0.5 to 1.0
—
Flare nut width
C D
6.5 13
9.7 20
12.9 23
16.0 25
19.2 28
Flare nut width
C D
6.5 13
9.7 20
12.9 20
16.0 23
19.2 34
1.0 to 1.5
1.0 to 1.5
1.5 to 2.0
1.5 to 2.0
—
(mm)
17
22
26
29
36
(mm)
17
22
24
27
36