LG LM-2164H2L Service Manual ▷ View online
- 52 -
Disassembly of the parts (Indoor unit)
Warning :
Disconnect the unit from power supply before mak-
ing any checks.
Be sure the power switch is set to “OFF”.
Disconnect the unit from power supply before mak-
ing any checks.
Be sure the power switch is set to “OFF”.
To remove the Grille from the Chassis.
• Set the up-and-down air discharge louver to open
• Set the up-and-down air discharge louver to open
position (horizontally) by finger pressure.
• Remove the securing screws
• To remove the Grille, pull the lower left and right
• To remove the Grille, pull the lower left and right
side of the grille toward you (slightly tilted) and lift
it straight upward.
it straight upward.
1. To remove the sensor, housing connect, earth
conductor & step motor conductor with sen-
sor holder, Motor, Evaporator & P.C.B.
sor holder, Motor, Evaporator & P.C.B.
Screw
Power
Conductor
Conductor
Step Motor
Conductor
Conductor
Earth
Conductor
Conductor
Motor
Conductor
Conductor
Sensor
Conductor
Conductor
2. To remove the Control Box.
• Remove securing screws.
• Pull the control box out from the chassis care-
• Pull the control box out from the chassis care-
fully.
3. To remove the Discharge Grille.
• Pull the discharge grille out from the chassis
carefully.
4. To remove the Evaporator.
• Remove screws securing the evaporator and
the holder eva.
• Unhook the tab on the right inside of the chas-
sis at the same time, slightly pull the evapora-
tor toward you until the tab is clear of the slot.
tor toward you until the tab is clear of the slot.
5. To remove the Cross-Flow Fan
• Loosen the screw securing the cross-flow fan
to the fan motor (do not remove).
• Lift up the right side of the cross-flow fan and
the fan motor, separate the fan motor from the
cross-flow fan.
cross-flow fan.
• Remove the left end of the cross-flow fan from
the self-aligning bearing.
- 53 -
2-way Valve (Liguid Side)
3-way Valve (Gas Side)
Works
Shaft position
Shaft position
Service port
Shipping
Closed
Closed
Closed
(with valve cap)
(with valve cap)
(with cap)
Air purging
Open
Closed
Open
(Installation)
(counter-clockwise)
(clockwise)
(push-pin or with
vacuum pump)
Operation
Open
Open
Closed
(with valve cap)
(with valve cap)
(with cap)
Pumping down
Closed
Open
Open
(Transfering)
(clockwise)
(counter-clockwise)
(connected
manifold gauge)
Evacuation
Open
Open
Open
(Servicing)
(with charging
cylinder)
Gas charging
Open
Open
Open
(Servicing)
(with charging
cylinder)
Pressure check
Open
Open
Open
(Servicing)
(with charging
cylinder)
Gas releasing
Open
Open
Open
(Servicing)
(with charging
cylinder)
- 54 -
2-way, 3-way Valve
3.
2.
1.
4.
5.
6.
Flare nut
To
piping
connection
Open position
Closed position
Closed position
Flare nut
Valve cap
To
piping
connection
Open position
Closed position
Closed position
Hexagonal wrench
(4mm)
(4mm)
To outdoor unit
Pin
Service
port
port
Service
port cap
port cap
To outdoor unit
(1) Pumping down
•
Procedure
1. Confirm that both the gas side and liquid side
valves are set to the open position.
- 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 con-
nect the manifold gauge to the service port of
the gas side valve.
the gas side valve.
- Connect the hose of the gauge with the push
pin to the service port.
4. Air purging of the charge hose.
- Open the Low-handle valve on the gauge
slightly to air purge from the hose.
5. Set the liquid side valve to the closed position.
6. Operate the air conditioner at the cooling cycle
and stop it when the gauge indicates 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-
cating 1kg/
c m
2
g.
8. Disconnect the charge set, and mount the liquid
side and gas side valve caps and the service
port nut.
port nut.
- Use torque wrench to tighten the service port
nut to a torque of 1.8kg.m.(4.2kg.m/5.5kg.m)
- Be sure to check for gas leakage.
9. Apply steps from 1 to 8 to each unit (A-unit, B-
unit) by the same method.
- 55 -
Indoor unit
Outdoor unit
Liquid side
Close
Gas side
2-Way
valve
Open
3-Way
valve
manifold gauge
Hi- handle
(CLOSE)
Low-handle
(CLOSE)
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