LG LP-E5082ZA Service Manual ▷ View online
¤
Set the both 3-way(liquid side) and 3-way(gas side) valves to open position with the hexagonal wrench
for the unit operation.
for the unit operation.
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Checking the gas leakage for the left piping.
• Connect the manifold gauge to the service port of 3-way(gas side) valve.
Measure the pressure.
• Keep it for 5 - 10 minutes.
Ensure if the pressure indicated on the gauge is as same as that measured at first time.
– 34 –
CLOSED
CLOSED
Closed
Closed
Indoor unit
Outdoor unit
Liquid side
Gas side
– 35 –
6.8 Checking the Drainage and Form the Piping
1) Checking the Drainage
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Remove the inlet grille with your hands as shown
(right and left) and pull in the direction indicated by
the arrow.
(right and left) and pull in the direction indicated by
the arrow.
¤Ł
Check the drainage
• Pour a glass of water into the Drain pan.
• Ensure if water flows drain hose of indoor unit.
• Ensure if water flows drain hose of indoor unit.
2) Form the Piping
¤
Wrap the connecting port of indoor unit with the
insulation material and secure it with two Plastic
Bands. (for the right Piping)
insulation material and secure it with two Plastic
Bands. (for the right Piping)
• If you connect an additional drain hose, the end of
the drain-outlet should be water, and fix it on the
wall to avoid swinging in the wind.)
wall to avoid swinging in the wind.)
¤Ł
Tape the Piping, and Connecting Cable from down
to up.
to up.
¤Ø
From the piping gathered by taping along the exte-
rior wall fix it on the wall by saddle or equivalent.
rior wall fix it on the wall by saddle or equivalent.
¤
Tape the piping and connecting cable from down
to up.
to up.
¤Ł
In order to prevent water from entering the room,
tape the piping from a trap.
tape the piping from a trap.
¤Ø
Fix the piping onto the wall with saddle or bracket.
¤
When using the drain elbow hose, use a mount of
3cm of higher.
3cm of higher.
¤Ł
In the cold district (0°c continued for 2~3 days), the
drain water is frozen and the fan fails to function,
do not use the drain elbow.
drain water is frozen and the fan fails to function,
do not use the drain elbow.
– 36 –
In case the outdoor unit is installed below
position of the indoor unit.
position of the indoor unit.
In case the outdoor unit is installed upper position
of the indoor unit.
of the indoor unit.
Drain water treatment of outdoor Unit(Heat Pump
Only)
Only)
Seal a small opening around
the piping with gum type sealer.
the piping with gum type sealer.
Gas side
piping
Main cable
Liquid side
piping
Connecting
cable
Trap is required to prevent the electrical parts
from entering the water.
from entering the water.
Drain elbow
Hose(inner diameter ø20)
Arrange the hose downward slope without waving.
Trap
Trap
6.9 Final Check and Test Run
After installing the unit, perform the final check and run-
ning test as follows:
ning test as follows:
¤
Is the unit securely mounted?
¤Ł
Is the installation location adequate?
¤Ø
Is the water piping work adequately and without
leakage?
leakage?
¤Œ
Are trapped drain lines installed at condensate
drain connections?
drain connections?
¤º
Has the refrigeration cooling cycle been kept
sealed?
sealed?
¤
Is the electrical wiring adequate and are the screws
tightened on terminals?
tightened on terminals?
After the above final checkings, prepare the running
test as follows:
test as follows:
¤
Connect compound gauges to the check joints at
discharge and suction sides of the compressor.
discharge and suction sides of the compressor.
¤Ł
Turn all switches "OFF"
¤Ø
Turn the main switch "ON"
Running test should be accomplished as follows:
¤
Set operation switch at "FAN" and the fan will start.
Check to ensure that the fan sounds normal.
Check to ensure that the fan sounds normal.
¤Ł
Next, set it at "COOL" and the compressor will
start. Check to ensure that the compressor sounds
normal.
start. Check to ensure that the compressor sounds
normal.
¤Ø
Check discharge and suction pressure on the com-
pound gauges.
pound gauges.
¤Œ
Check working voltage, phase balance and running
current.
current.
¤º
Check to ensure that the thermistor functions prop-
erly.
erly.
¤
Check to ensure that the high pressure control
switch functions correctly.
switch functions correctly.
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