Flaring Work - LG LA121HPMI Service Manual

Installation

Flaring Work

Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the follow-
ing 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 out-
door unit.
3. Cut the pipes a little longer than measured distance.
4. Cut the cable 1.5m(59.1in) longer than the pipe length.
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 drop-
ping 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
Ø19.05 3/4
18 Room Air Conditioner
A
mm inch
1.1~1.3 0.043~0.051
1.5~1.7 0.059~0.066
1.6~1.8 0.063~0.070
1.6~1.8 0.063~0.070
1.9~2.1 0.074~0.082
Copper
pipe
90
Point down
Flare nut
Copper tube
Firmly hold copper pipe in a die in the dimen-
sion shown in the table above.
Bar
Bar
Copper pipe
Clamp handle
Slanted Uneven Rough
Pipe
Reamer
Handle
Yoke
Cone
Red arrow mark