Cutting/Flaring The Pipes - Samsung 018 Series User & Installation Manual

Cutting/flaring the pipes

1. Make sure that you have the following 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. Below are some examples of correctly and incorrectly cut pipes.
3. To prevent a refrigerant leak, remove all burrs on the cut edge of the pipe using a reamer or deburring tool.
4. Carry out flaring work using flaring tool as shown below.
Flaring tool
Clutch type
5. Check if you flared the pipe correctly. Below are some examples of correctly and incorrectly flared pipes.
Correct Inclined
6. Align the pipes and tighten the flare nuts first manually and then with a torque wrench, applying the following
torque.
• If you must braze the pipes, Nitrogen gas blowing is mandatory to prevent accumulation of debris.
CAUTION
36
90°
Wing nut type
Outer diameter (D)
Using flaring tool for
mm inch
6.35 1/4
9.52 3/8
12.70 1/2
15.88 5/8
Damaged Surface
Outer diameter Connection Torque
mm inch N·m
6.35 1/4 14~18
9.52 3/8 34~42
12.70 1/2 49~61
15.88 5/8 68~82
Oblique Rough
A
Die
Copper pipe
Flare nut
Depth of flaring part (A)
R-410A
mm inch
0~0.5 0~0.02 1.0~1.5
0~0.5 0~0.02 1.0~1.5
0~0.5 0~0.02 1.0~1.5
0~0.5 0~0.02 1.0~1.5
Cracked
Flare dimension
Ibf·ft mm
10.3~13.3 8.7~9.1
25.1~31.0 12.8~13.2
36.1~45.0 16.2~16.6
50.2~60.5 19.3~19.7
Burr
Yoke
Die
Copper pipe
Using conventional flaring tool
Clutch type
mm inch mm
0.04~0.06 1.5~2.0
0.04~0.06 1.5~2.0
0.04~0.06 1.5~2.0
0.04~0.06 1.5~2.0
Uneven Thickness
Flare shape [mm(inch)]
inch
0.34~0.36
0.50~0.52
0.64~0.65
0.76~0.78
Wing nut type
inch
0.06~0.08
0.06~0.08
0.06~0.08
0.06~0.08
R 0.4~0.8
(0.016~0.032)