Cutting/Flaring The Pipes - Samsung AC024JXADCH Installation Manual

Cutting/Flaring the pipes

1. Make sure that you have the required tools available. (pipe cutter, reamer, flaring tool and pipe holder)
2. If you wish to shorten the pipes, cut it with a pipe cutter, taking care to ensure that the cut edge remains at a 90° angle
with the side of the pipe. Refer to the illustrations below for examples of edges cut correctly and incorrectly.
3. To prevent any gas from leaking out, remove all burrs at the cut edge of the pipe, using a reamer.
4. Slide a flare nut on to the pipe and modify the flare.
5. Check that the flaring is correct, referring to the illustrations below for examples of incorrect flaring.
6. Align the pipes and tighten the flare nuts first manually and then with a torque wrench, applying the following torque.
Flare nut
Valve
Wrench(inch) lbf·ft Wrench(inch) lbf·ft Wrench(inch) lbf·ft Wrench(inch) lbf·ft Wrench(inch) lbf·ft
1/4" 0.67
3/8" 0.87
1/2" 1.02
5/8" 1.14
3/4" 1.42
• If the pipes require brazing ensure that OFN(Oxygen Free Nitrogen) is flowing through the system.
• Nitrogen blowing pressure range is 0.02 ~ 0.05 MPa.
CAUTION
28
Oblique
Outer Diameter (D)
R 0.4~0.8
(0.016~0.032)
D
L
Correct
Valve cap
13.3 0.91
14.8
31 0.91
40.6 1.14
48 1.14 29.5
73.8 1.5
Rough Burr
ø6.35 mm(1/4")
ø9.52 mm(3/8")
ø12.70 mm(1/2")
ø15.88 mm(5/8")
ø19.05 mm(3/4")
Inclined Damaged
Surface
Pressure port cap
11.8~
0.71 Allen(Hex.)0.2
13.9
Depth (A) Flare dimension (L)
0.051inch mm
0.071inch 8.7~9.1
0.079inch 12.8~13.2 0.50~0.52
0.087inch 16.2~16.6 0.64~0.65
0.087inch 19.3~19.7 0.76~0.78
Cracked Uneven
Thickness
Valve needle Pressure port
6.6
9.6
Inch
0.34~0.36
- 0.25