LG LP-C508T / LP-H508T / LP-Z508T Service Manual ▷ View online
Service Manual 39
Operating
How to insert batteries
1
Remove the cover from the back of
the remote controller.
• Slide the cover according to the arrow
the remote controller.
• Slide the cover according to the arrow
direction.
2
Insert two batteries.
• Be sure that the (+) and (-) directions
• Be sure that the (+) and (-) directions
are correct.
• Be sure that both batteries are new.
3
Re-attach the cover.
• Slide the cover into back position.
• Slide the cover into back position.
1
How to mount onto a wall
Use the screws to secure the holder to the wall or attach the holder side of indoor unit.
Use the screws to secure the holder to the wall or attach the holder side of indoor unit.
2
To insert the remote control to the holder.
• Do not use rechargeable batteries
such batteries as different from
standard dry cells in shape,
dimensions, and performance.
standard dry cells in shape,
dimensions, and performance.
• Change the batteries with new ones if
the remote controller does not work
properly after using for an extended
length of time.
properly after using for an extended
length of time.
Insert
Pull
Remote Control Preparation
4 Floor Standing Type Air Conditioner
Safety Precautions
■
Operational
Do not install, remove, or re-
install the unit by yourself
(customer).
install the unit by yourself
(customer).
• There is risk of fire, electric shock,
explosion, or injury.
Be cautious when unpacking
and installing the product.
and installing the product.
• Sharp edges could cause injury.
Be especially careful of the case
edges and the fins on the con-
denser and evaporator.
edges and the fins on the con-
denser and evaporator.
For installation, always con-
tact the dealer or an
Authorized Service Center.
tact the dealer or an
Authorized Service Center.
• There is risk of fire, electric shock,
explosion, or injury.
Do not install the product on a
defective installation stand.
defective installation stand.
• It may cause injury, accident, or
damage to the product.
Be sure the installation area
does not deteriorate with age.
does not deteriorate with age.
• If the base collapses, the air condi-
tioner could fall with it, causing
property damage, product failure,
and personal injury.
property damage, product failure,
and personal injury.
Do not let the air conditioner
run for a long time when the
humidity is very high and a
door or a window is left open.
run for a long time when the
humidity is very high and a
door or a window is left open.
• Moisture may condense and wet or
damage furniture.
Do not touch(operate) the
product with wet hands.
product with wet hands.
• There is risk of fire or electrical
shock.
Do not place a heater or other
appliances near the power
cable.
appliances near the power
cable.
• There is risk of fire or electric
shock.
Do not let electric parts of the
product get wet.
product get wet.
• There is risk of fire, failure of the
product, or electric shock.
40 Floor Standing Type Air Conditioner
3-way valve
Valve cap
Open position
Closed position
Closed position
Pin
Service
port
Service
port cap
To outdoor unit
Flare nut
To
piping
connection
Valve cap
Open position
Closed position
Closed position
Pin
Service
port
Service
port cap
To outdoor unit
Flare nut
To
piping
connection
Works
Shaft position
Shaft position
Service port
Shipping
Closed
Closed
Closed
(with valve cap)
(with valve cap)
(with valve cap)
1.
Air purging
Open
Closed
Open
(Installation)
(counter-clockwise)
(clockwise)
(push-pin)
Operation
Open
Open
Closed
(with valve cap)
(with valve cap)
2. Pumping
down
Open
Open
Open
(transferring) (clockwise)
(counter
(connected
-clockwise)
manifold gauge)
3. Evacuation
Open
Open
Open
(Servicing)
(with charging
cylinder)
4. Gas
charging
Open
Open
Open
(Servicing)
(with charging
cylinder)
5.
Pressure check
Open
Open
Open
(Servicing)
(with charging
cylinder)
6.
Gas releasing
Open
Open
Open
(Servicing)
(with charging
cylinder)
3-Way Valve (Liquid Side)
3-Way Valve (Gas Side)
3-way valve
Service Manual 41
3-way valve
Gas side
Liquid side
Indoor unit
Outdoor unit
Closed
3-way
valve
Closed
3-way
valve
Air purging
Required tools: hexagonal wrench, adjustable wrench, torque wrench, and gas leak detector.
The additional gas for air purging has been charged in the outdoor unit.
However, if the flare connections have not been 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 cooling capacity, and can lead to a malfunction.
The additional gas for air purging has been charged in the outdoor unit.
However, if the flare connections have not been 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 cooling capacity, and can lead to a malfunction.
• Procedure
Recheck the piping connections.
Open the valve stem of the 3-way(liquid side) valve
counterclockwise approximately 90°, wait 10 sec-
onds, and then set it to closed position.
- Be sure to use a hexagonal wrench to operate the
Open the valve stem of the 3-way(liquid side) valve
counterclockwise approximately 90°, wait 10 sec-
onds, and then set it to closed position.
- Be sure to use a hexagonal wrench to operate the
valve stem.
Check for gas leakage.
-Check the flare connections for gas leakage.
Purge the air from the system.
- Set the 3-way(liquid side) valve to the open posi-
-Check the flare connections for gas leakage.
Purge the air from the system.
- Set the 3-way(liquid side) valve to the open posi-
tion and remove the cap from the 3-way(gas side)
valve's service port.
valve's service 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.
for one minute. Repeat this three times.
Use torque wrench to tighten the service port nut.
Set the 3-way (gas side) valve to the back seat.
Set the 3-way (gas side) valve to the back seat.
Mount the valve stem nuts to the 3-way (liquid
side)valve and 3-way (gas side) valves.
Check for gas leakage.
side)valve and 3-way (gas side) valves.
Check for gas leakage.
• At this time, especially check for gas leakage from
the 3-way (liquid side) valve and 3-way (gas side)
valve's stem nuts, and from the service port nut.
valve's stem nuts, and from the service port nut.
Caution
If gas leakage is discovered in step
above, take
the following measures:
If the gas leaks stop when the piping connections are
tightened further, continue working from step
If the gas leaks stop when the piping connections are
tightened further, continue working from step
.
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.
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.
gas leakage from the refrigeration cycle.
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