WARNING: Never operate your unit without filters in
place. Failure to heed this warning may 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 some cases, fire.
B. Fans and Fan Motor
Periodically check the condition of fan wheels and housings and
fan-motor shaft bearings. No lubrication of condenser- or
evaporator-fan bearings or motors is required or recommended.
C. Evaporator and Condenser Coils
Cleaning of the coils should only be done by qualified service
personnel. Contact your dealer for the required annual mainte-
nance.
D. 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
dealer.
E. Compressor
All compressors are factory-shipped with a normal charge of the
correct type refrigeration grade oil in them and should rarely
require additional oil.
F. Condenser Fan
WARNING: Do not poke sticks, screwdrivers, or any
other object into revolving fan blades. Severe bodily
injury may result.
The fan must be kept free of all obstructions to ensure proper
cooling. Contact your dealer for any required service.
G. Electrical Controls and Wiring
Electrical controls are difficult to check without proper instrumen-
tations; therefore, if there are any discrepancies in the operating
cycle, contact your dealer and request service.
H. Refrigerant Circuit
The refrigerant circuit is difficult to check for leaks without the
proper equipment; therefore, if inadequate cooling is suspected,
contact your local dealer for service.
WARNING: System under pressure. Relieve pressure
and recover all refrigerant before system repair or final
unit disposal to avoid personal injury or death. Use all
service ports and open all flow-control devices, including
solenoid valves.
I. Unit Panels
After performing any maintenance or service on the unit, be sure
all panels are fastened securely in place to prevent rain from
entering unit cabinet and to prevent disruption of the correct unit
airflow pattern.
REGULAR DEALER MAINTENANCE
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 following:
1. Inspection and, if required, cleaning of the condenser and
evaporator coils.
2. Inspection and, if required, cleaning of the evaporator drain
pan.
3. Inspection and cleaning of blower wheel housing and
motor.
4. Inspection of all supply-air and return-air ducts for leaks,
obstructions, 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 the unit casing for signs of deterioration.
7. Inspection of all electrical wiring and components to assure
proper connection.
8. Inspection for leaks in the refrigerant circuit. Pressure-
check to determine appropriate refrigerant charge.
9. Inspection of compressor oil level by service person to
ensure proper oil level is maintained in the compressor
when it is installed and running.
10. Operational check of the unit to determine working condi-
tions. Repair or adjustment should be made at this time.
Your servicing dealer may offer an economical service contract
that covers seasonal inspections. Ask for further details.
Complete service instructions can be found in the unit Installation,
Start-Up and Service Instructions.
Fig. 2—Filter Access Panel—Vertical Supply Shown
ACCESS PANEL
FILTER ACCESS
PANEL*
*For accessory filter rack.
TABLE 1 — INDOOR-AIR FILTER DATA
UNIT SIZE FILTER SIZE
701A018-030 20x20
701A036-042 20x24
701A048-060 24x30
702A024-030 20x20
702A036 20x24
702A042-060 24x30
—2—
