Checking The Drainage And Forming The Pipings - LG LS-J0761NL Service Manual

4. Checking the Drainage and Forming the Pipings

1) Checking the drainage
1. To remove the front panel from the indoor unit,
remove the front panel from the indoor unit cabi-
net.
Set the air direction louvers up-and-down to the
position(horizontally) by hand.
Remove the securing screws that retain the front
panel. Pull the lower left and right sides of the
grille toward you and lift it off.
(7K, 9K Btu models: 2EA,
12K, 18K Btu models: 3EA)
Pull the right and
the left side.
2. To check the drainage.
Pour a glass of water
on the evaporator.
Ensure the water flows
through the drain hose
of the indoor unit with-
out any leakage and
goes out the drain exit.
3. Drain piping
The drain hose should point downward for easy
drain flow.
Do not make drain piping.
Accumulated
Do not raise
drain water
Water Water
Waving
leakage leakage
Screw
Downward slope
Tip of drain hose
Air
dipped in water
Water
leakage
Ditch
2) Form the piping
1. Form the piping by wrapping the connecting por-
tion of the indoor unit with insulation material and
secure it with two kinds of vinyl tapes.
If you want to connect an additional drain hose,
the end of the drain outlet should be routed above
the ground. Secure the drain hose appropriately.
2. In cases where the outdoor unit is installed below
the indoor unit perform the following.
Tape the piping, drain hose and connecting cable
from down to up.
Secure the tapped piping along the exterior wall
using saddle or equivalent.
3. In cases where the Outdoor unit is installed above
the Indoor unit perform the following.
Tape the piping and connecting cable from down
to up.
Secure the taped piping along the exterior wall.
Form a trap to prevent water entering the room.
Fix the piping onto the wall by saddle or equiva-
lent.
Less than
50mm gap
-37-
Seal small openings
around pipings with a
gum type sealer.
Pipings
Trap is required to prevent water
from entering into electrical parts.
Seal a small opening
around the pipings
with gum type sealer.
Trap
Trap
Taping
Drain
hose
Connecting
cable