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Table I--Indoor°Air FHter Data
UNIT SIZE FILTER SiZE
48XZ024=030 20x20xl
48XZ036 20x24xl
48XZ042-060 24x30xl
Compressor
All compressors are fhctoQ--shipped with a nornral charge of the
con'ect type refi'igeration grade oil. A compressor should rarely
require additional oil.
Condenser (Outdoor) Fan
FILTER ACCESS
PANEL*
ACCESS PANEL
*For accessory filter rack.
C99094
Fig. 2--Accessory Filter Rack Access Panel
To replace or inspect filters in accessow- filter rack (See Fig. 2):
1. Remove the filter access panel using a 5/16=in nut driver
2. Remove the filter(s) by pulling it out of the unit. If the filter(s)
is dirty, 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 £_r
instructions. When replacing filters, always use the same size and
type of filter that was supplied, originally, by the installer.
Never operate your unit without the filter(s) in place Failure
to follow this caution will result in damage to the blower
motor and/or compressor An accumulation of dust and lint on
internal parts of your unit can cause loss of efficiency and, in
S01TIe cases_ a fire
Fans and Fan Motors
Periodically, check the condition of fhn wheels and housings and
fan-motor shaft bearings. (ontact your dealer for the required
annual maintenance.
Indoor and Outdoor (?oils
(?leaning of the coils should only be done by qualified service
personnel. Contact your dealer for the required annual mainteo
p.ance.
Condensate Drain
The &ain pan and condensate drain line should be checked and
cleaned at the same time the cooling coils are checked by your
dealer.
[
Do not poke sticks, screwdrivers, or any other objects into
re\olxing fan blades. Injury or equipment damage _ill result. ]
B
The fire must be kept fi'ee of all obstructions to ensure proper
cooling. Contact your dealer ibr any required service.
Electlical Controls and Wiring
Electrical controls are difficult to check without proper instrumen-
tations. If there are any discrepancies in the operating cycle,
contact your dealer and request service.
Refl'igerant Circuit
The refrigerant circuit is difficult to check for leaks without the
proper equipment. If inadequate cooling is suspected, contact your
tocal dealer tbr sercice.
m
System under pressure. Relieve pressure and recover all
refrigerant before system repair or final unit disposal to avoid
serious injury or death. Use all service ports and open all
flow-control devices, including solenoid valves. Failure to
£fllow this warning could result in injury.
Unit Panels
After per%truing any maintenance or service on the unit, be sure
all panels are fhstened securely in place to prevent rain fi'om
entering unit cabinet and to prevent disn/ption of the correct unit
airflow pattern.
REGL LAR DEALER MAINTENAN(E
In addition to the type of routine maintenance you might be willing
to perform, your unit should be inspected regularly by a properly
trained service technician. An inspection (preferably each year, but
at least every other year) should include the £_llowing:
1. Inspection and, if required, cleaning of the outdoor and indoor
coils.
2. Inspection and, if required, cleaning of the indoor coil &ain
pan.
3. Inspection and cleaning of blower wheel housing and motor.
4. Inspection of all supply-air and returnoair ducts [br leaks,
obstl_./ctions, and insulation integrity. Any problems found
should be resolved at this time.
5. Inspection of the unit base to ensure that no cracks, gaps, etc,
exist which may cause a hazardous condition.
6. Inspection of d_e unit casing fbr signs of deterioration.
7. Inspection of all electrical wiring and components to assure
proper connection.
8. Inspection fbr leaks in the refrigerant circuit. Pressure-check
to determine appropriate refrigerant charge.
9. Operational check of the unit to determine working condi-
tions. Repair or actjustment should be made at this time.
Your sela'icing dealer may offer an economical service contract
that covers seasonal inspections. Ask for further details.
Complete service instl_./ctions can be found in the unit Installation,
StartoUp and Service Instructions.
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