LG LS-M3060HL / LS-M3060CL / LS-M3061HL / LS-M3061CL / LS-M3064HL / LS-M3064CL / LS-M3221HL / LS-M3221CL / LS-N3660HL / LS-N3660CL / LS-N3661HL / LS-N3661CL / LS-N3821HL / LS-N3821CL Service Manual ▷ View online
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3. To remove the Control Box.
• Remove the 5 securing screws.
• Pull the control box out from the chassis
• Pull the control box out from the chassis
carefully.
4. To remove the Discharge Grille.
• Remove the 3 securing screw.
• Pressing the right side of the discharge grille
• Pressing the right side of the discharge grille
downward slightly, unhook the discharge grille.
• Pull the discharge grille out from the chassis
carefully.
5. To remove the Evaporator.
• Remove 3 screws securing the evaporator(at the
left 2EA, at the right 1EA).
• Remove 2 screw securing the evaporator clamp.
• Unhook the tab on the right inside of the chassis
at the same time, slightly pull the evaporator
toward you until the tab is clear of the slot.
toward you until the tab is clear of the slot.
Screw
Screw
Screw
Screw
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6. To remove the Fan motor
• Loosen the screw securing the cross-flow fan to
the fan motor (do not remove).
• Loosen the screw securing the mount motor.
• Separate the fan motor from the cross-flow fan.
• Take care not to drop the motor.
• Take care not to drop the motor.
7. To remove the Cross-Flow Fan
• Loosen the screw securing the holder bearing.
• Lift up the cross-flow fan.
• Lift up the cross-flow fan.
Screw
Fan motor
Screw
Screw
Fan motor
Mount motor
Holder bearing
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3-way Valve
• Procedure
(1) Confirm that both liquid side and gas side
valves are set to the open position.
– Remove the valve stem caps and confirm that
– Remove the valve stem caps and confirm that
the valve stems are in the raised position.
– Be sure to use a hexagonal wrench to operate
the valve stems.
(2) Operate the unit for 10 to 15 minutes.
(3) Stop operation and wait for 3 minutes, then
connect the charge set to the service port of
the Gas side valve.
– Connect the charge hose to the service port.
the Gas side valve.
– Connect the charge hose to the service port.
(4) Air purging of the charge hose.
– Open the low-pressure valve on the charge set
slightly to air purge from the charge hose.
(5) Set the liquid side valve to the closed position.
(6) Operate the air conditioner in cooling mode
and stop it when the gauge indicates
1kg/cm
1kg/cm
2
g.
(7) Immediately set the Gas side valve to the
closed position.
– Do this quickly so that the gauge ends up indi-
– Do this quickly so that the gauge ends up indi-
cating 3 to 5kg/cm
2
g.
(8) Disconnect the charge set, and mount the
Liquid side and Gas side valve’s stem nuts
and the service port nut.
– Use torque wrench to tighten the service port
and the service port nut.
– Use torque wrench to tighten the service port
nut to a torque of 1.8 kg.m.
– Be sure to check for gas leakage.
Lo
Closed
Purge the air
Outdoor unit
Indoor unit
Liquid side
Gas side
CLOSE
Open
3-Way
valve
valve
3-Way
valve
valve
CLOSE
1. Pump down
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1) Re-air purging
(Re-installation)
• Procedure
(1) Confirm that both the liquid side valve and the
gas side valve are set to the closed position.
(2) Connect the charge set and a gas cylinder to
the service port of the Gas side valve.
– Leave the valve on the gas cylinder closed.
– Leave the valve on the gas cylinder closed.
(3) Air purging.
– Open the valves on the gas cylinder and the
charge set. Purge the air by loosening the flare
nut on the liquid side valve approximately 45°
for 3 seconds then closing it for 1 minute;
repeat 3 times.
nut on the liquid side valve approximately 45°
for 3 seconds then closing it for 1 minute;
repeat 3 times.
– After purging the air, use a torque wrench to
tighten the flare nut on liquid side valve.
(4) Check for gas leakage.
– Check the flare connections for gas leakage.
(5) Discharge the refrigerant.
– Close the valve on the gas cylinder and dis-
charge the refrigerant until the gauge indicates
3 to 5 kg/cm
3 to 5 kg/cm
2
g.
(6) Disconnect the charge set and the gas cylin-
der, and set the Liquid side and Gas side
valves to the open position.
– Be sure to use a hexagonal wrench to operate
valves to the open position.
– Be sure to use a hexagonal wrench to operate
the valve stems.
(7) Mount the valve stem nuts and the service
port nut.
– Use torque wrench to tighten the service port
– Use torque wrench to tighten the service port
nut to a torque of 1.8 kg.m.
– Be sure to check for gas leakage.
* CAUTION:
Do not leak the gas in the air during Air
Purging.
Purging.
Lo
Closed
OPEN
Closed
Gas cylinder
R22
Outdoor unit
Indoor unit
Liquid side
Gas side
CLOSE
3-Way
valve
valve
3-Way
valve
valve
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