LG LS-C322MLD0_MMB0_MMM0 / LS-H322MLD0_MMB0_MMM0 / LS-C366NLD0_NMM0 / LS-H366NLB0_NLD0_NMM0 / S36LHP Service Manual ▷ View online
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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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2) Balance refrigerant of the 3-way valve
(Gas leakage)
• Procedure
(1) Confirm that both the liquid side and gas side
valves are set to the back seat.
(2) Connect the charge set to the 3-way valve’s
port.
– Leave the valve on the charge set closed.
– Connect the charge hose to the service port.
– Leave the valve on the charge set closed.
– Connect the charge hose to the service port.
(3) Open the valve (Lo side) on the charge set and
discharge the refrigerant until the gauge indi-
cates 0 kg/cm
cates 0 kg/cm
2
G.
– If there is no air in the refrigerant cycle (the
pressure when the air conditioner is not running
is higher than 1 kg/cm
is higher than 1 kg/cm
2
G), discharge the refrig-
erant until the gauge indicates 0.5 to 1
kg/cm
kg/cm
2
G. if this is the case, it will not be neces-
sary to apply a evacuatin.
– Discharge the refrigerant gradually; if it is dis-
charged too suddenly, the refrigeration oil will
also be discharged.
also be discharged.
Lo
Open
Open
3-Way
valve
valve
3-Way
valve
valve
Gas side
CLOSE
OPEN
Outdoor unit
Liquid side
Indoor unit
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