Samsung AC JNCDEH Series Manual

Contents

9ENGLISHCutting/Flaring the pipes1. 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 theside of the pipe. Refer to the illustrations below for examples of edges cut correctly and incorrectly.Oblique Rough BurrPipe cutterPipe3. 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.Outer Diameter (D) Depth (A)ø 6.35 mm 1.3 mmø 9.52 mm 1.8 mmø 12.70 mm 2.0 mmø 15.88 mm 2.2 mmø 19.05 mm 2.2 mmPipe Flare5. Check that the flaring is correct, referring to the illustrations below for examples of incorrect flaring.UnevenThicknessCrackedDamaged SurfaceInclinedCorrectOuter diameter (D,mm) Connection torque (N·m) Flare dimension (L,mm) Flare shape (mm)Ø 6.35 14~18 8.7~9.1L D90° ±2°45° ±2° R 0.4~0.8Ø 9.52 34~42 12.8~13.2Ø 12.70 49~61 16.2~16.6Ø 15.88 68~82 19.3~19.7Ø 19.05 100~120 23.6~24.0• If the pipes require brazing, ensure that OFN (Oxygen Free Nitrogen) is flowing through the system. If it is notflowing,Comp or valve can be damaged.• Nitrogen blowing pressure range is 0.02 ~ 0.05MPa.CAUTION