LG LM-3060HL Service Manual ▷ View online
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2) Connect the cable to the indoor
unit
1. Connect the wires to the terminals on the control
panel individually according to the outdoor unit
connection.
connection.
• Ensure the color of cables of outdoor unit and the
terminal No.s are the same to the indoor's
respectively.
respectively.
• Secure the cable onto the control board with the
holder (clamper)
2. Attach the Grille onto the cabinet
• Grasp the lower left and right side of the Grille and
engage two tabs on the top inside edge of the grille
with two slots on the cabinet's top front edge.
with two slots on the cabinet's top front edge.
• Press the Grille toward to the cabinet until it will be
back into place.
• Secure the grille to the cabinet with two screws.
ø
7
m
m
ø
7
m
m
Connecting cable
Signal cable
The connecting and signal cable, from the indoor
unit to the outdoor unit should be complied with the
following specification. (Rubber insulation, type
H05RN-F approved by TUV or VDE)
unit to the outdoor unit should be complied with the
following specification. (Rubber insulation, type
H05RN-F approved by TUV or VDE)
NOMINAL CROSS-
SECTIONAL AREA
0.75 mm
SECTIONAL AREA
0.75 mm
2
OR MORE
(Morsettiera unità esterna)
1(BK)
[Unità A/B/C]
[Unità A] [Unità B/C] Alimentazione elettrica
2(WH)3(GN)
1(BK)
SIGNAL CABLE
(DC 5V)
CONNECTOR CABLE
(AC POWER)
SIGNAL CABLE
(DC 5V)
CONNECTOR CABLE
(AC POWER)
SIGNAL CABLE
(DC 5V)
CONNECTOR CABLE
(AC POWER)
2(WH)
1(BR) 2(BL)
3(GN)
1(BK) 2(WH)
1(BR) 2(BL)
3(GN)
1(BK) 2(WH)
1(BR) 2(BL)
3(GN)
1(BR) 2(BL) 1(BR) 2(BL)
2(BK)
1(WH)
(Morsettiera unità interna)
Unità A
Unità B
Unità C
Cavo di alimentazione
BLACK
BLUE
GREEN
GN/YL
(SIGNAL CABLE)
(CONNECTING CABLE)
WHITE
BROWN
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A
B
C
Taping
Drain
hose
hose
Connecting cable
Pipings
Signal cable
Seal a small
opening around the
pipings with gum
type sealer.
opening around the
pipings with gum
type sealer.
Trap is required to prevent the electrical parts from
entering the water.
entering the water.
Fascetta di
plastica
plastica
3) Form the pipings
1. Wrap the connecting portion of indoor unit with the
insulation material and secure it with two Plastic
Bands. (for the right pipings)
Bands. (for the right pipings)
• If you may connect an additional drain hose, the end
of the drain-outlet should keep distance from the
ground. (Do not dip it water, and fix it on the wall to
avoid swinging in the wind.)
ground. (Do not dip it water, and fix it on the wall to
avoid swinging in the wind.)
2. Tape the Pipings, drain hose and Connecting and
Signal Cable from down to up.
3. Form the pipings gathered by taping along the
exterior wall and fix it onto the wall by saddle or
equivalent.
equivalent.
1. Tape the Pipings and Connecting and signal cable
from down to up.
2. Form the pipings gathered by taping along the exteri-
or wall and the Trap is required to prevent the room
from entering the water.
from entering the water.
3. Fix the pipings onto the wall by saddle or equivalent.
The Outdoor unit is installed below position of the
Indoor unit.
Indoor unit.
The Outdoor unit is installed below upper of the
Indoor unit.
Indoor unit.
Seal a small opening around
the pipings with gum type
sealer.
the pipings with gum type
sealer.
Trap
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5. Air Purging of the Pipings and indoor unit
• The air which contains a moisture is remaining in the refrigeration cycle may cause a malfunction on the
compressor.
• Air-purging should be conducted in each unit (A, B, C unit).
• Prior to air-purging, confirm that both the liquid side valve and the gas side valve are set to the closed position.
• Prior to the test operation disconnect the power, because there is no need to turn on the air conditioner for the
air-purging.
• The additional gas for air-purging in outdoor unit should not be provided by factory.
CAUTION
1) Air purging by means of a vacuum pump.
1. Separate service port caps and valve stem caps by using a torque wrench.
2. Confirm that both the liquid side valve and the gas side valve are set to the chosed position.
3. Connect the center hose of the manifold gauge and a vacuum pump.
4. Connect the service port of the liquid side valve and the high side of the gauge.
2. Confirm that both the liquid side valve and the gas side valve are set to the chosed position.
3. Connect the center hose of the manifold gauge and a vacuum pump.
4. Connect the service port of the liquid side valve and the high side of the gauge.
Confirm that the low side of the gauge are set to the closed position.
5. Evacuate for 10 minutes or more.
Close the hi-handle of the gauge and turn off the vacuum pump, after confirming that the gauge needle has
moved toward 760mmHg.
moved toward 760mmHg.
6. Disconnect the vacuum pump from the gauge.
7. Set the both liquid and gas side valves to open position with hexagonal wrench for the unit operation.
8. Checking a gas leagage.
7. Set the both liquid and gas side valves to open position with hexagonal wrench for the unit operation.
8. Checking a gas leagage.
Check the flare connections for gas leakage.
9. Mount the valve stem caps and the service port caps.
10. Apply step from 1 to 9 to each unit (A, B, C unit) by the same method.
Gas side service valve
Service port
Service port cap
Manifold gauge
Vacuum
pump
Valve
core pin
core pin
Low Handle
Hi Handle
Liquid side service valve
Gas side
Liquid side
Valve stem
Valve stem cap
2) Air purging by means of a gas cylinder.
1. Separate service port caps an valve stem caps by using a torque wrench.
2. Confirm that both the liquid side valveand the gas side valve are set to the closed position.
3. Connect the center hose of the manifold gauge and a gas cylinder to the service port of the liquid side valve.
Leave the valve on the gas cylinder closed.
4. Check for gas leakage.
Open the valves on the gas cylinder and the hi-handle of the gauge, wait 10 seconds, and then set the valve to
closed position. Check the flare connections for gas leakage.
5. Air-purging.
Open the valve on the gas cylinder and hi-handle of the gauge. Using the hexagonal wrench to press the liquid
side valve's core pin, discharge for three seconds and then wait for one minute. Repeat this three times.
6. Discharge the refrigerant.
Close the valve on the gas cylinder and discharge the refrigerant until the gauge indicates 0.5 to 1kg/cm
2
G.
7. Disconnect the gauge from the service port and mount the service port caps.
8. Set the both liquid and gas side valves to open position with the hexagonal wrench for the unit operation.
9. Mount the valve stem caps by using a torque wrench.
10. Apply step from 1 to 9 to each unit (A, B, C unit) by the same method.
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If gas leakage are discovered, take the following measures:
If the gas leaks stop when the piping connections are tightened further, continue working.
If the gas leaks do not stop when the connections are retightened, repair the location of the leak, discharge
all of the gas through teh srvice port, and then recharge with the specified amount of gas from a gas cylinder.
Gas side service valve
Service port
Service port cap
Manifold gauge
Valve
Gas cylinder
R22
Valve
core pin
core pin
Low
Handle
Hi Handle
Liquid side service valve
Gas side
Liquid side
Valve stem
Valve stem cap
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