LG LS-H126P / AS-H126P / LS-C126P / LS-H096P / AS-H096P_ARTCOOL Service Manual ▷ View online
-33-
Disassembly of the parts (Indoor unit)
Warning :
Disconnect the unit from power supply before making
any checks.
Be sure the power switch is set to “OFF”.
Disconnect the unit from power supply before making
any checks.
Be sure the power switch is set to “OFF”.
1. To remove the Grille from the Chassis.
- Pull the grille bottom, the remove 2 securing screws.
- Lift the both lower parts of panel front.
- After pull down this panel a bit, separate connecting
- Pull the grille bottom, the remove 2 securing screws.
- Lift the both lower parts of panel front.
- After pull down this panel a bit, separate connecting
wire with product.
(When seperating the connectors, Push the Rip
on
(When seperating the connectors, Push the Rip
on
connector tightly.)
2. To remove the Control Box.
- Before removing the control box, be sure to
- Before removing the control box, be sure to
disconnect the wires from PWB.
- Pull the cover control out from the control box
and disconnect other wires.
- Remove securing screws.
- Pull the control box out from the chassis carefully.
- Pull the control box out from the chassis carefully.
Panel Front
Connector
Step Motor Connectors
Sensor Connector
Comp Connector
4Way/Fan Connector
Motor
Connector
Connector
Power Connector
Power Connector
Comp Connector
-34-
3. To remove the Evaporator.
- Remove 4 screws securing the evaporator.
- Pull the evaporator out from the chassis carefully.
- Remove 4 screws securing the evaporator.
- Pull the evaporator out from the chassis carefully.
4. Before removing the Turbo Fan.
- Remove the securing screws from the chassis.
- Pull the pipe cover, top cover and the air guide.
- Remove the securing screws from the chassis.
- Pull the pipe cover, top cover and the air guide.
5. To remove the Motor.
- Remove the securing bolt from the motor shaft.
- Pull the fan out from the motor shaft.
- Remove 4 screws securing motor mount from the
- Remove the securing bolt from the motor shaft.
- Pull the fan out from the motor shaft.
- Remove 4 screws securing motor mount from the
chassis and lift up the motor mount and the bracket.
Top Cover
Pipe Cover
Air Guide
Turbo Fan
Bracket
Bolt
Motor Mount
2-way, 3-way Valve
2-way Valve (Liquid Side)
3-way Valve (Gas Side)
Shaft position
Shaft position
Service port
Closed
Closed
Closed
(with valve cap)
(with valve cap)
(with cap)
Open
Closed
Open
(counter-clockwise)
(clockwise)
(push-pin or with
vacumm pump)
Open
Open
Closed
(with valve cap)
(with valve cap)
(with cap)
Closed
Open
Open
(clockwise)
(counter-clockwise)
(connected manifold
gauge)
Open
Open
Open
(with charging
cylinder)
Open
Open
Open
(with charging
cylinder)
Open
Open
Open
Open
Works
Shipping
Air purging
(Installation)
(Installation)
Operation
Pumping down
(Transfering)
(Transfering)
Evacuation
(Servicing)
(Servicing)
Gas charging
(Servicing)
(Servicing)
Pressure check
(Servicing)
(Servicing)
Gas releasing
(Servicing)
(Servicing)
1.
2.
3.
4.
5.
6.
Valve cap
Open position
Closed position
Closed position
Pin
Service
port
port
Service
port cap
port cap
To outdoor unit
Flare nut
To
piping
connection
piping
connection
To outdoor unit
Hexagonal wrench (4mm)
Open position
Closed position
Closed position
To
piping
connection
piping
connection
Flare nut
-35-
Open
(with charging cylinder)
Open
(with charging cylinder)
1. Air purging
Required tools : hexagonal wrench, adjustable
wrench, torque wrenches, wrench to
hold the joints, and gas leak
detector.
hold the joints, and gas leak
detector.
The additional gas for air purging has been charged
in the outdoor unit.
However, if the flare connections have not be done
correctly and there gas leaks, a gas cylinder and the
charge set will be needed.
in the outdoor unit.
However, if the flare connections have not be done
correctly and there gas leaks, a gas cylinder and the
charge set will be needed.
The air in the indoor unit and in the piping must be
purged. If air remains in the refrigeration pipes, it will
affect the compressor, reduce to cooling capacity, and
could lead to a malfunction.
purged. If air remains in the refrigeration pipes, it will
affect the compressor, reduce to cooling capacity, and
could lead to a malfunction.
• Procedure
(1) Recheck the piping connections.
(2) Open the valve stem of the 2-way valve
counterclockwise approximately 90°, wait 10
seconds, and then set it to closed position.
– Be sure to use a hexagonal wrench to operate
seconds, and then set it to closed position.
– Be sure to use a hexagonal wrench to operate
the valve stem.
(3) Check for gas leakage.
– Check the flare connections for gas leakage.
(4) Purge the air from the system.
– Set the 2-way valve to the open position and
remove the cap from the 3-way valve’s service
port.
port.
– Using the hexagonal wrench to press the valve
core pin, discharge for three seconds and then
wait for one minute. Repeat this three times.
wait for one minute. Repeat this three times.
(5) Use torque wrench to tighten the service port
nut to a torque of 1.8kg.cm.
(6) Set the 3-way valve to the back seat.
(7) Mount the valve stem nuts to the 2-way and 3-
way valves.
(8) Check for gas leakage.
– At this time, especially check for gas leakage
from the 2-way and 3-way valve’s stem nuts,
and from the service port nut.
and from the service port nut.
Caution
If gas leakage are discovered in step (3) above,
take the following mesures :
take the following mesures :
If the gas leaks stop when the piping connections
are tightened further, continue working from step (4).
If the gas leaks do not stop when the connections
are retightened, repair the location of the leak,
discharge all of the gas through the service port,
and then recharge with the specified amount of
gas from a gas cylinder.
are tightened further, continue working from step (4).
If the gas leaks do not stop when the connections
are retightened, repair the location of the leak,
discharge all of the gas through the service port,
and then recharge with the specified amount of
gas from a gas cylinder.
Service port nut:
Be sure, using a torque wrench to tighten the service port nut (after using the service port), so that it prevents the
gas leakage from the refrigeration cycle.
* CAUTION : Do not leak the gas in the air during Air purging.
Be sure, using a torque wrench to tighten the service port nut (after using the service port), so that it prevents the
gas leakage from the refrigeration cycle.
* CAUTION : Do not leak the gas in the air during Air purging.
Liquid side
Outdoor unit
3-way
valve
valve
Gas side
Indoor unit
2-way
valve
valve
Open
Clsed
-36-
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