Samsung NS071LDXEA, Manual

Page: 15 / 31

15
ENGLISH
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.
• If the pipes require brazing ensure that OFN (Oxygen Free Nitrogen) is flowing through the system.
• Nitrogen blowing pressure range is 0.02 ~ 0.05MPa.
Oblique Rough
Burr
Pipe
cutter
Pipe
Outer Diameter (D) Depth (A)
ø6.35 mm 1.3 mm
ø9.52 mm 1.8 mm
ø12.70 mm 2.0 mm
ø15.88 mm 2.2 mm
ø19.05 mm 2.2 mm
Pipe
Flare
Uneven
Thickness
Cracked Damaged
Surface
Inclined Correct
Valve
Flare nut Valve cap Pressure port cap Valve needle Pressure port
Wrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m
1/4" 17 18 23 20 18 16~18 Allen(hex.) 5 9 - 0.34
3/8" 22 42 23 20 18 16~18 Allen(hex.) 5 9 - 0.34
1/2" 26 55 29 40 18 16~18 Allen(hex.) 5 13 - 0.34
5/8" 29 65 29 40 18 16~18 Allen(hex.) 5 13 - 0.34
3/4" 36 100 38 40 18 16~18 Allen(hex.) 5 13 - 0.34