LG LSC121PMA Service Manual - Page 21

2. Flaring Work and Connection of Piping 1) Flaring work Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. 1. Cut the pipes and the cable. s Use the piping kit accessory or the pipes purchased locally. s Measure the distance between the indoor and the outdoor unit. s Cut the pipes a little longer than measured distance. s Cut the cable 1.5m(4.9ft) longer than the pipe length. Copper pipe 90° Slanted Uneven Rough 2. Burrs removal s Completely remove all burrs from the cut cross sec- tion of pipe/tube. s Put the end of the copper tube/pipe in a downward direction as you remove burrs in order to avoid drop- ping burrs into the tubing. Pipe Reamer 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 5. Check s Compare the flared work with figure below. s If flare is noted to be defective, cut off the flared sec- tion and do flaring work again. Smooth all round Inside is shiny without scratches = Improper flaring = Point down 3. Putting nut on s 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) Flare nut Copper tube Even length all round Inclined Surface Cracked Uneven damaged thickness 2) Connection of piping-Indoor s Preparing the indoor unit's piping and drain hose for installation through the wall. 1. Route the indoor tubing and the drain hose in the direction of rear left or right 4. Flaring work s 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 A mm 0~0.5 0~0.5 0~0.5 0~1.0 -21- Drain hose