Samsung 018 Series User & Installation Manual

36Cutting/flaring the pipes1. 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 ofthe pipe. Below are some examples of correctly and incorrectly cut pipes.Oblique90° Rough Burr3. 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 toolClutch type Wing nut typeADieCopper pipeYokeDieCopper pipeFlare nutOuter diameter (D)Depth of flaring part (A)Using flaring tool forR-410AUsing conventional flaring toolClutch type Wing nut typemm inch mm inch mm inch mm inch6.35 1/4 0~0.5 0~0.02 1.0~1.5 0.04~0.06 1.5~2.0 0.06~0.089.52 3/8 0~0.5 0~0.02 1.0~1.5 0.04~0.06 1.5~2.0 0.06~0.0812.70 1/2 0~0.5 0~0.02 1.0~1.5 0.04~0.06 1.5~2.0 0.06~0.0815.88 5/8 0~0.5 0~0.02 1.0~1.5 0.04~0.06 1.5~2.0 0.06~0.085. Check if you flared the pipe correctly. Below are some examples of correctly and incorrectly flared pipes.Correct Inclined Damaged Surface Cracked Uneven Thickness6. Align the pipes and tighten the flare nuts first manually and then with a torque wrench, applying the followingtorque.Outer diameter Connection Torque Flare dimension Flare shape [mm(inch)]mm inch N·m Ibf·ft mm inch6.35 1/4 14~18 10.3~13.3 8.7~9.1 0.34~0.3690° ±2°45° ±2° R 0.4~0.8(0.016~0.032)9.52 3/8 34~42 25.1~31.0 12.8~13.2 0.50~0.5212.70 1/2 49~61 36.1~45.0 16.2~16.6 0.64~0.6515.88 5/8 68~82 50.2~60.5 19.3~19.7 0.76~0.78• If you must braze the pipes, Nitrogen gas blowing is mandatory to prevent accumulation of debris.CAUTION