LG LAN121CNM Service Manual - Page 18
Flaring Work
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Flaring Work Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. Cut the pipes and the cable. 1. Use the piping kit accessory or the pipes purchased locally. 2. Measure the distance between the indoor and the outdoor unit. 3. Cut the pipes a little longer than measured distance. 4. Cut the cable 1.5m(59.1in) longer than the pipe length. Copper pipe 90° Slanted Uneven Rough Burrs removal 1. Completely remove all burrs from the cut cross section of pipe/tube. 2. Put the end of the copper tube/pipe in a downward direction as you remove burrs in order to avoid dropping burrs into the tubing. Putting nut on • Remove flare nuts attached to indoor and outdoor unit, then put them on pipe/tube having completed burr removal. (not possible to put them on after flaring work) Flaring work • Carry out flaring work using flaring tool as shown below. Outside diameter mm inch Ø6.35 1/4 Ø9.52 3/8 Ø12.7 1/2 Ø15.88 5/8 mm 0~0.5 0~0.5 0~0.5 0~1.0 A inch 0~0.020 0~0.020 0~0.020 0~0.039 Point down Pipe Reamer Flare nut Copper tube Firmly hold copper pipe in a die in the dimension shown in the table above. Handle "A" Bar Bar Yoke Cone Copper pipe Clamp handle Red arrow mark 18 Room Air Conditioner