LG AR-DR12-05A Installation And Operation Manual page 61

WARNING
Do not operate this unit without the filters and birdscreen installed.
They prevent the entry of foreign objects such as leaves, birds, etc.
Do not remove access panels or other unit components while standing on a ladder or other unsteady base.
Access panels and unit components are heavy and serious injury may occur.
Internal Filter Maintenance
The unit will typically be provided with 2-inch thick pleated paper filters in the airstream. These filters should be checked according to a
routine maintenance schedule and replaced as necessary to ensure proper airflow through the unit. Replacement filters shall be of same
performance and quality as factory installed filters. Filter must be pleated design with integral metal grid. Two acceptable filter replacements
are Aerostat Series 400 or Farr 30/30®.
Filters upstream of the coil should be checked regularly. If the filters are dirty, they should be cleaned or replaced. It is important the filters
stay clean to maintain desired airflow.
External Filter Maintenance
Aluminum mesh, 2-inch thick filters are located in the supply weatherhood (if the weatherhood option
was purchased). These filters should be checked and cleaned on a regular basis for best efficiency. The
frequency of cleaning depends upon the cleanliness of the incoming air. These filters should be cleaned
by rinsing with a mild detergent in warm water prior to start-up.
WARNING
Biological Hazard. May cause disease.
Cleaning should be performed by qualified personnel.
Drain pans in any air conditioning unit will have some moisture in them, therefore, algae and other
organisms will grow due to airborne spores and bacteria. Periodic cleaning is necessary to prevent this buildup from plugging the drain and
causing the drain pan to overflow. Inspect twice a year to avoid the possibility of overflow. Also, drain pans should be kept clean to prevent
the spread of disease. Cleaning should be performed by qualified personnel.
Outdoor Air Weatherhood
Model
(Aluminum Mesh)
AR-DR12
AR-DR22
AR-DE12
AR-DE22
* Based upon a 30 / 36 in. energy wheel (16x25x2, quantity of 3 for 41 in. energy wheel)
** Based upon a 52 in. energy wheel (16x16x2, quantity of 8 for 58 in. energy wheel)
Qty
20x20x2 4
25x25x2 4
20x20x2 4
25x25x2 4
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.
ROUTINE MAINTENANCE
Pre-Wheel Outdoor/ Exhaust
Filters*
N/A
N/A
20x25x2
16x25x2
Figure 29: Outdoor Air Intake Hood
Mesh Filter Access
Supply Final Filters
Qty
(Pre-coil)
20x20
16x25
2* 20x20
4** 16x25
Qty
4
8
4
8
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