Maintenance - LG AR-DR11-08A Installation And Operation Manual

Maintenance

Access Doors
When working on the unit, use the tie-back rods to fasten the door open for conve-
nience and safety. Tie-back rods are located on these doors:
• Exterior door in front of the compressors.
• Exterior door in front of the electrical panel.
• Interior door at the electrical panel.
Find the tie-back rod on the lower inside door lip. Pull up on the inner end. Swing the
rod toward the unit and insert the end of the rod into the hole in the sheet metal, as
shown.
Checking the Seals on Access Doors
To prevent air or water leaks around access doors, the door handles can be adjusted
to tighten the door seal. To test if the door is properly sealed, close the access door
on a dollar bill with the end of the bill protruding from the unit, then tug on the bill. If
the bill is taut and doesn't slip when pulling on it, then the door handles are ade-
quately tight.
If the bill can easily slide out of the seal, then the door handles are not tight enough.
To tighten the door handles, adjust the nuts on the latch assembly, as shown in the
following photo, and move the latch closer to the door.
Cooling Coil
Coils need to be periodically cleaned to operate at design efficiency. Soiled fins re-
duce the capacity of the coil, demand more fan energy, and provide an environment
for odor and bacteria to grow and to be spread throughout the conditioned zone.
High pressure water can be used to clean coils. Spray in the direction opposite the
airflow to push dirt out the front of the coil.
Test the spray pressure on a small area on a corner of the coil to see how well the
fins withstand the high pressure. Foaming chemical sprays and washes are available
and should be used instead of high-pressure water on more fragile fins or when high
fin density does not allow high-pressure water cleaning.
Drain Pan
Clean the condensate drain pans regularly. Algaecide tablets or similar products can
be used to prevent any algae growth in the drain pans. Remove any foreign objects that may obstruct drainage.
Check the drain trap for any sediment that may have accumulated in the bottom of the trap and could prevent drainage.
Winterize the drain trap each year before the drain piping or drain pan is exposed to freezing air. Return the trap to operating position before
the cooling season starts.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
MAINTENANCE
Figure 93: Replacing the Tie-Back Rod into the Door
Lip Before Closing the Door.
Figure 94: Checking the Access Door Seals.
If bill doesn't slip,
the seal is tight.
Figure 95: Adjusting the Door Handles.
Assembly to
adjust
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