Cutting/Flaring The Pipes - Samsung AM FN1DEH Series Installation Manual

Cutting/Flaring the Pipes

14
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.
Oblique
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 Wing nut type
Outer diameter
[D (mm)]
R-410A clutch type
6.35
9.52
12.70
15.88
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.
Connection
Outer
Torque
diameter
(D, mm)
kgf•cm
6.35 140~180
9.52 350~430
12.70 500~620
15.88 690~830
In case of needing brazing, you must work with Nitrogen gas blowing.
Rough
A
Die
Copper pipe
Depth [A (mm)]
Conventional flare tool
Flare tool for
Clutch type
0~0.5 1.0~1.5
0~0.5 1.0~1.5
0~0.5 1.0~1.5
0~0.5 1.0~1.5
Damaged Surface Cracked
Flare dimension
(A, mm)
N•m
14~18 8.70~9.10
34~42 12.80~13.20
49~61 16.20~16.60
68~82 19.30~19.70
Burr
Yoke
Die
Copper pipe
Flare nut
Wing nut type
1.5~2.0
1.5~2.0
1.5~2.0
1.5~2.0
Uneven Thickness
Flare shape
(mm)
R 0.4~0.8
D
A