Cutting Or Flaring The Pipes - Samsung RD040MHXCA Series Installation Manual

I U
NSTALLING THE
Installing the Refrigerant Pipe Work (Continued)
Pipe
Pipe
Pipe Flare
Apply frozen oil
Indoor outlet pipe
16
E-
FJM RD040MHXCA_IM_00000_E_2.23.10.indd 16
NIT

Cutting or Flaring the Pipes

1
Make sure that you have the required tools available.
Pipe cutter (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.
Burr
3
To prevent a gas leak, remove all burrs at the cut edge of the pipe using a
reamer.
Pipe cutter
4
Put a flare nut slightly into 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 to connect them easily. Tighten the flare nuts first with your
Flare nut
hands, and then with a torque wrench, applying the following torque:
Connecting pipe
Note
 I n case of welding the pipe, you must weld with Nitrogen gas blowing.
Oblique
CAUTION Face the pipe down while removing the burrs to make sure
that burrs do not get in to the pipe.
Depth (A)
Outer Diameter (D)
mm inch mm
ø6.35 ø1/4 1.3
ø9.52 ø3/8 1.8
ø12.70 ø1/2 2.0
ø15.88 ø5/8 2.2
ø19.05 ø3/4 2.2
Oblique Damaged
Surface
Outer Diameter
ø6.35 mm(ø1/4inch)
ø9.52 mm(ø3/8inch)
ø12.70 mm(ø1/2inch)
ø15.88 mm(ø5/8inch)
ø19.05 mm(ø3/4inch)
Excessive torque can be cause of gas leakage.
CAUTION
Rough Burr
Flaring Size (B)
inch mm inch
0.051 9.0 0.354
0.071 13.0 0.512
0.079 16.2 0.638
0.087 19.3 0.760
0.087 22.5 0.886
Cracked Uneven
Thickness
Torque (kgf•cm)
140~170
250~280
380~420
440~480
990~1210
2010-2-24 19:57:29