LG LP-E5082HL Service Manual ▷ View online
– 54 –
6) Remote Conrtol Preparation(3HP, 5HP only)
How to mount onto a wall
How to insert batteries
1
Use the screws to secure the holder to the wall or attach the holder to the side of indoor
unit.
unit.
2
To insert the remote control to the holder.
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.
• 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
– 55 –
8. 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)
Gas side
Liquid side
Indoor unit
Outdoor unit
Closed
3-way
valve
Closed
3-way
valve
– 56 –
8.1 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.
¤Ł
Open the valve stem of the 3-way(liquid side) valve
counterclockwise approximately 90°, wait 10
seconds, and then set it to closed position.
- Be sure to use a hexagonal wrench to operate the
counterclockwise approximately 90°, wait 10
seconds, and then set it to closed position.
- Be sure to use a hexagonal wrench to operate the
valve stem.
¤Ø
Check for gas leakage.
-Check the flare connections for gas leakage.
-Check the flare connections for gas leakage.
¤Œ
Purge the air from the system.
- Set the 3-way(liquid side) valve to the open
- Set the 3-way(liquid side) valve to the open
position and remove the cap from the 3-way(gas
side) valve's service port.
side) 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.
¤º
Use torque wrench to tighten the service port nut.
¤
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.
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
¤
¤Ø
Ø
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
¤Œ
.
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.
8.2 Pumping down
• Procedure
¤
Confirm that both 3-way(liquid side) and 3-way(gas
side) valves are set to the open position.
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.
¤Ł
Operate the unit for 10 to 15 minutes.
¤Ø
Stop operation and wait for 3 minutes, then connect
the charge set to the service port of the 3-way (gas
side) valve.
- Connect the charge hose with the push pin to the
the charge set to the service port of the 3-way (gas
side) valve.
- Connect the charge hose with the push pin to the
service port.
¤Œ
Air purging of the charge hose.
• Open the low-pressure valve on the charge
• Open the low-pressure valve on the charge
equipment slightly to purge air from the charge
hose.
hose.
¤º
Set the 3-way(liquid side) valve to the closed
position.
position.
¤
Operate the air conditioner at the cooling cycle and
stop it when the gauge indicates 1 kg/cm
stop it when the gauge indicates 1 kg/cm
2
g
¤
Immediately set the 3-way(gas side) valve to the
closed position.
- Do this quickly so that the gauge ends up indicating
closed position.
- Do this quickly so that the gauge ends up indicating
3 to 5kg/cm
2
g.
¤
Disconnect the charge set, and mount the
3-way(liquid side) and 3-way(gas side) valve's stem
nuts and the service port nut.
3-way(liquid side) and 3-way(gas side) valve's stem
nuts and the service port nut.
- Use torque wrench to tighten the service port nut.
- Be sure to check gas leakage.
- Be sure to check gas leakage.
– 57 –
Lo
CLOSE
CLOSE
Purge the air
Gas side
Liquid side
Indoor unit
Outdoor unit
Closed
Open
3-Way
valve
3-Way
valve
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