LG LP-K3063ZA Service Manual ▷ View online
–24–
• 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)
Do not repeat the bending process to prevent the
tubing from cracking or crushing.
tubing from cracking or crushing.
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.
Replace the tubing holder into original position
Route the tubing and the drain hose staight backwards.
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.
Tape the tubing and the connecting cable.
Indoor unit installation.
Connecting the pipings to the indoor unit.
–25–
■
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.
Connet the supplied cables to the connector
on the control board.
on the control board.
Close the inlet grille.
28K/30K/40K
Gas side piping
Liquid side piping
Torque wrench
Outdoor unit
1
2
4
3
5
6
CLAMP
(Ø10.7)
(Ø10.7)
TO INDOOR UNIT CONNECTOR
POWER SUPPLY
–26–
1) Connecting pipings to outdoor unit
Align the center of the pipings and sufficiently
tighten the flare nut with fingers.
tighten the flare nut with fingers.
Finally tighten the flare nut with torque wrench
until the wrench clicks.
until the wrench clicks.
• When tightening the flare nut with torque wrench,
ensure the direction for tightening follows the
arrow on the wrench.
arrow on the wrench.
2) Connecting cable to outdoor unit
Open the control board cover from the outdoor unit
by removing the screws.
by removing the screws.
Connect wires to the terminals on the control
board individually and secure the cables onto the
control board with clamp.
board individually and secure the cables onto the
control board with clamp.
■
Connecting Piping and the Cable to Outdoor Unit
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
Perform grounding
• This product should be grounded.
• Defective grounding could cause an electric shock.
CAUTION
–27–
H/P
450/750V
4.0mm
2
13.3mm
C/O
450/750V
2.5mm
2
11.8mm
UNIT
Circuit breaker capacity
Voltage
Time
Starting point
Power source voltage
working voltage
working voltage
Starting voltage
The unit is completely wired internally at the fac-
tory according to general rule of electrical tech-
nology, but local rules, if they are required, should
be complied with.
tory according to general rule of electrical tech-
nology, but local rules, if they are required, should
be complied with.
1. Power supply
Power source must fulfill the following conditions:
The working voltage should be higher than
90% and lower than 110% of the rated voltage
marked on the name plate.
90% and lower than 110% of the rated voltage
marked on the name plate.
The starting voltage should be higher than
85% of the rated voltage marked on the name
plate.
85% of the rated voltage marked on the name
plate.
Provide a recognized circuit breaker as below
between power source and unit.
A disconnection device to adequately discon-
nect all supply lines must be fitted.
(for service operations)
between power source and unit.
A disconnection device to adequately discon-
nect all supply lines must be fitted.
(for service operations)
The screws which fasten the wiring in the cas-
ing of electrical fittings are liable to come loose
from vibrations to which the unit is subjected
during the course of transportation. Check them
and make sure that they are all tightly fastened.
(If they are loose, it could give rise to burn-out
of the wires.)
ing of electrical fittings are liable to come loose
from vibrations to which the unit is subjected
during the course of transportation. Check them
and make sure that they are all tightly fastened.
(If they are loose, it could give rise to burn-out
of the wires.)
See to it that the starting voltage is maintained
at more than 90 percent of the rated voltage
marked on the name plate.
at more than 90 percent of the rated voltage
marked on the name plate.
The following troubles would be caused by volt-
age drop-down.
Vibration of a magnetic switch, damage on the
contact point there of, fuse breaking, distur-
bance to the normal function of a overload pro-
tection device.
age drop-down.
Vibration of a magnetic switch, damage on the
contact point there of, fuse breaking, distur-
bance to the normal function of a overload pro-
tection device.
2. Wiring
After the confirmation of the above conditions, pre-
pare the wiring as follows:
pare the wiring as follows:
Use the power supply cord(Rubber insulation,
type Ho7RNF approved by HAR or SAA) suit-
able for the product's electriccal capacity.
type Ho7RNF approved by HAR or SAA) suit-
able for the product's electriccal capacity.
■
Power Supply and Wiring
UNIT
VOLTS
Conductor
cross-sectional area
Outside
diameter
H/P
30A
C/O
30A
20K/30K/
40K
20K/30K
/40K
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