Table of Contents
Advertisement
Cutting/flaring the pipes
1.
Make sure that you prepared the required tools. (pipe cutter, reamer, flaring tool and pipe holder)
2.
If you want to shorten the pipe, cut it using a pipe cutter ensuring that the cut edge remains at 90° with the side
of the pipe. There are some examples of correctly and incorrectly cut edges below.
3.
To prevent a gas leak, remove all burrs at the cut edge of the pipe using a reamer.
4.
Carry out flaring work using flaring tool as shown below.
Flaring tool
Clutch type
5.
Check if you flared the pipe correctly. There are some examples of incorrectly flared pipes below.
Correct
Inclined
6.
Align the pipes and tighten the flare nuts first manually and then with a torque wrench, applying the following
torque.
• In case of needing brazing, you must work with Nitrogen gas blowing.
Oblique
Die
Wing nut type
Copper pipe
Outer diameter (mm)
6.35
9.52
12.70
15.88
Damaged
Surface
Outer diameter
(mm)
Torque(kgf•cm)
6.35
9.52
12.70
15.88
Rough
A
Flare nut
Flare tool for
R410A clutch type
0~0.5
0~0.5
0~0.5
0~0.5
Cracked
Uneven
Thickness
Connection
Flare dimension
(mm)
145~175
8.70~9.10
333~407
12.80~13.20
505~615
16.20~16.60
630~769
19.30~19.70
Burr
York
Die
Copper pipe
A(mm)
Conventional flare tool
Clutch type
Wing nut type
1.0~1.5
1.5~2.0
1.0~1.5
1.5~2.0
1.0~1.5
1.5~2.0
1.0~1.5
1.5~2.0
Flare shape
(mm)
R 0.4~0.8
9
Advertisement
Table of Contents
