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FIRE,EXPLOSION,ELECTRICALSHOCKHAZARD
Failuretofollowthiswarningcouldresultinpersonalinjury,
deathorpropertydamage.
1.TURNOFFELECTRICALPOWERTOYOURUNIT
BEFORE SERVICINGOR PERFORMING
MAINTENANCE.
2.Whenremovingaccesspanelsorperformingmaintenance
functionsinsideyourunit,beawareofsharpsheetmetal
partsandscrews.Althoughspecialcareistakentoreduce
sharpedgestoaminimum,beextremelycarefulwhen
handlingpartsorreachingintotheunit.
Air Filters
The air filter(s) should be checked every 3 or 4 weeks and changed
or cleaned whenever it becomes dirty. Dirty filters produce exces-
sive stress on the blower motor and can cause the motor to overheat
and shut down.
This unit must have air filters in place before it can be operated.
These filters can be located in one of at least two places. In many ap-
plications, the installer will provide return air filter grilles mounted
on the wall or ceiling of the conditioned structure. In the instance of
filter grilles, the filters can simply be removed from the grille and re-
placed.
The other typical application is an accessory filter rack installed in-
side the unit itself. The following information is given to assist in
changing filters used in these internal filter racks.
Table 1 indicates the correct filter size for your unit. Refer to Fig. 2
to access filters installed in the accessory filter rack.
Table 1--Air Filters Located Inside [;nit
(For Replacement Purposes)
Unit Size Quantity Filter Size
024-030 2 12x20x1
036-060 3 12x24x1
To replace or inspect filters in accessory filter rack (See Fig. 2):
1. Remove the filter access panel using a 5/16-in. nut driver.
2. Removethe filter(s)bypullingitout oftheunit. Ifthe filter(s)
is dirt5,, clean or replace with a new one.
When installing the new filter(s), note the direction of the airflow
arrows on the filter frame.
If you have difficulty locating your air filter(s) or have questions
concerning proper filter maintenance, contact your dealer for in-
structions. When replacing filters, always use the same size and type
of filter that was supplied originally by the installer.
FIRE AND UNIT OPERATION HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Never operate your unit without filters in place. An
accumulation of dust and lint on internal parts of your unit can
cause loss of efficiency.
FILTER ACCESS
PANEL*
ACCESS PANEL
*For accessory filter rack
Fig. 2 - Accessory Filter Rack Access Panel
Fans and Fan Motors
Periodically check the condition of fan wheels and housings and
fan-motor shaft bearings. Contact your dealer for the required
annual maintenance.
Indoor and Outdoor Coils
Cleaning of the coils should only be done by qualified service per-
sonnel. Contact your dealer for the required annual maintenance.
Condensate Drain
The drain pan and condensate drain line should be checked and
cleaned at the same time the cooling coils are checked by your deal-
er.
Coma2ressor
All compressors are factory shipped with a normal charge of the cor-
rect type of refrigeration grade oil. A compressor should rarely re-
quire additional oil.
Condenser Fan
PERSONAL INJURY AND UNIT DAMAGE HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Do not poke sticks, screwdrivers, or any other object into
revolving fan blades.
The fan must be kept free of all obstructions to ensure proper cool-
ing. Contact your dealer for any required service.
Electrical Controls and Wirin_
Electrical controls are difficult to check without proper instrumenta-
tion. If there are any discrepancies in the operating cycle, contact
your local dealer and request service.
Refrigerant Circuit
The refrigerant circuit is difficult to check for leaks without the prop-
er equipment. If inadequate cooling is suspected, contact your local
dealer for service.