Panasonic CS-HE9DKE Service Manual page 61

Nominal Outside
diameter diameter
1/4
3/8
1/2 12.70
Nominal Outside
diameter diameter
1/4
3/8
1/2 12.70
Nominal Outside
diameter diameter (mm)
1/4 6.35
3/8 9.52
1/2 12.70
Nominal Outside
diameter diameter (mm)
1/4 6.35
3/8 9.52
1/2 12.70
2. Procedure and precautions for flare connection
a. Check to make sure there is no scratches, dust, etc., on the flare and union.
b. Align the flared surface with the axial center of the union.
c. Use a torque wrench, and tighten to the specified torque. The tightening torque for R410A is the same as the conventional
torque value for R22. Be careful, because if the torque is too weak, it may lead to a gas leak. If it is too strong, it may split
the flare nut or make it impossible to remove the flare nut.
Nominal
diameter
1/4
3/8
1/2
Fig. 11 Relation between the flare nut structure and flaring tool end
Table 11 R410A flaring dimensions
Wall thickness
(mm)
(mm)
6.35 0.8
9.52 0.8
0.8
Table 12 R22 flaring dimensions
Wall thickness
(mm)
(mm)
6.35 0.8
9.52 0.8
0.8
Table 13 R410A flare and flare nut dimensions Unit: mm
Wall thickness A +0, -0.4
(mm)
0.8 9.1
0.8 13.2
0.8 16.6
Table 14 R22 flare and flare nut dimensions Unit: mm
Wall thickness A +0, -0.4
(mm)
0.8 9.0
0.8 13.0
0.8 16.2
Table 15 R410A tightening torque
Outside
diameter (mm)
6.35
9.52
12.70
A (mm)
R410A flaring
tool, clutch type
Clutch type
0 - 0.5 1.0 - 1.5
0 - 0.5 1.0 - 1.5
0 - 0.5 1.0 - 1.5
A (mm)
R410A flaring
tool, clutch type
Clutch type
0 - 0.5 0.5 - 1.0
0 - 0.5 0.5 - 1.0
0 - 0.5 0.5 - 1.0
B C
dimension dimension
9.2 6.5
13.5 9.7
16.0 12.9
B C
dimension dimension
9.2 6.5
13.5 9.7
16.0 12.9
Tightening torque
N.m (kgf.cm)
14 - 18 (140 - 180)
33 - 42 (330 -420)
55 (550)
61
CS-HE9DKE CU-HE9DKE / CS-HE12DKE CU-HE12DKE
Conventional flaring tool
Wing-nut type
1.5 - 2.0
1.5 - 2.0
2.0 - 2.5
Conventional flaring tool
Wing-nut type
1.0 - 1.5
1.0 - 1.5
1.5 - 2.0
D Flare nut
dimension width
13 17
20 22
23 26
D Flare nut
dimension width
13 17
20 22
20 24
Torque wrench tightening torque
N.m (kgf.cm)
18 (180)
42 (420)
55 (550)