LG LP-K3060HL Service Manual ▷ View online
–18–
2. Preparation of installation parts and tools
No.
Installation Parts, Tools
Use
1
Flaring tool (Ø 6,35 - Ø 19,05)
Flaring the pipes
2
Remear
Remove burrs from cut edges of pipes.
3
Pipe cutter (MAX 35mm Copper pipe)
Cutting the pipings
4
Wrench (H5, H4 hexagonal wrench)
To open the service valve
5
Pipe bender
Bending the pipings
6
Leak detector
Check a gas-leakage of connecting part
of the pipings
7
Manifold gauge
To measure the pressure, to charge the refrigerant
8
Charge-nipple
To connect the bombe
9
Vacuum pump
To remove the air in the pipe.
10
Charge cylinder balance
To measure the refrigerant amount
11
Bombe (Freon-22)
Gas charge
Air purge
Cleaning the pipe
Air purge
Cleaning the pipe
12
Spanner
To tighten the connecting parts of the pipings
13
Monkey spanner
14
Driver( , )
15
Benchi (150mm)
Cutting the wires
16
Tapeline
To measure the length
17
Core drill
To make holes through the concrete wall and blocks
18
Voltmeter, Amperemeter, Clampmeter
To measure the current and voltage
19
Insulation resistance tester
To measure the insulation resistance
20
Glass thermometer
To measure the intake and outlet air temperature of the indoor unit
21
Copper tubes
To use the connecting pipings
22
Insulation material
To cover the connecting pipings
23
Tape
To finish the connecting pipings
24
Electrical Leakage Breaker
To shut off the main power
25
Cable
To connect the cable from outdoor unit to indoor unit
26
Drain hose sockets, elbows
To remote the condensing water
–19–
1. Preparation of piping
¤
Cut the pipes and the cable
• Use the accessory piping kit or the pipes
purchased locally.
• Measure the distance between the indoor and
the outdoor unit.
• Cut the pipes a little longer than measured
distance.
• Cut the cable 1.5m longer than the pipe length.
¤Ł
Remove burrs.
• Remove burrs from cut edges of pipes.
• Turn the pipe end down to avoid the metal pow-
der entering the pipe.
Caution:
If burrs are not removed, they may cause a gas
leakage.
leakage.
¤Ø
Flaring the pipes.
• Insert the flare nuts, mounted on the connection
ports of both indoor and outdoor unit, onto the
copper pipes. Some refrigerant gas may leak,
when the flare nuts are removed from the indoor
unit, as some gas is charged to prevent the
inside of the pipe from rusting.
copper pipes. Some refrigerant gas may leak,
when the flare nuts are removed from the indoor
unit, as some gas is charged to prevent the
inside of the pipe from rusting.
• Fit the copper pipe end into the Bar of flare tool
about 0~0.5mm higher. (See illustaration)
• Flare the pipe ends.
¤Œ
Tape the flaring part to protect it from dust or
damages.
damages.
90
°
Pipe cutter
Slanted
Rough
Pipe
Point down
Reamer
Bar
0~0.5mm
Copper
pipe
pipe
Clamp handle
Bar
Handle
Yoke
Cone
Red arrow mark
4
3
2
1
= Improper flaring =
Inclined
Cracked
Surface
damaged
damaged
Uneven
thickness
thickness
■
Piping of Indoor Unit
–20–
• Align the center of the pipings and suffciently tight-
en the flare nut with fingers.
• Finally, tighten the flare nut with troque wrench
until the wrench clicks.
When tightening the flare nut with troque wrench,
ensure the direction for tightening follows the arrow
on the wrench.
When tightening the flare nut with troque wrench,
ensure the direction for tightening follows the arrow
on the wrench.
3. Precautions in bending
¤
If it is necessary to bend or stretch the tubing,
use the spring which is attached to the tubing in
stead of pipe bender.
use the spring which is attached to the tubing in
stead of pipe bender.
• Please make a careful notice to make a smooth
line.
• Hold the tubing with your two hands closely and
then bend or stretch it slowly not to make any
crack.
crack.
• Remember that the radius (R) should not exceed
70mm (Refer to Fig. 1)
¤Ł
Do not repeat the bending process to prevent the
tubing from cracking or crushing.
tubing from cracking or crushing.
¤Ø
Keep in mind that the bending part should not be
cracked and make the radius (R) as long as possi-
ble (Refer to Fig. 2)`
cracked and make the radius (R) as long as possi-
ble (Refer to Fig. 2)`
PIPE SIZE
TORQUE
3/8"
4.2 Kg.m
1/2"
5.5 Kg.m
5/8"
5.5 Kg.m
3/4"
6.5 Kg.m
Indoor unit tubing
Flare nut
Pipings
Torque wrench
Spanner
Spring
R70mm
(Fig. 1)
(Fig. 2)
R
2. Connection of piping
¤
Move the indoor tubing and drain hose to the hole
• Remove tubing holder and pull the tubing out of the chassis.
¤Ł
Replace the tubing holder into original position
¤Ø
Route the tubing and the drain hose staight backwards.
¤Œ
Insert the connecting cable into the indoor unit through the hole.
• Do not connect the cable to the indoor unit
• Make a small loop with the cable for easy connection later.
¤º
Tape the tubing and the connecting cable.
¤
Indoor unit installation.
¤
Connecting the pipings to the indoor unit.
–21–
■
Connecting the Cable to Indoor Unit
• In order to protect cable, it should be inserted “Bushing Rubber”.
• The inside and outside connecting cable can be connected after opening the inlet grille.
Knock-out holes
¤
Open the inlet grille manually.
¤Ł
Connet the supplied cables to the connector
on the control board.
on the control board.
¤Ø
Close the inlet grille.
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