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routine Maintenance
Proper maintenance is important to achieve optimum
performance from the air conditioner. The ability to properly
perform maintenance on this equipment requires certain
mechanical skills and tools. If you do not possess these
skills, contact your dealer for maintenance. Consult your
local dealer about the availability of maintenance contracts.
At a minimum, routine maintenance should include the
following:
air Filters
It is recommended that you inspect and clean or replace
the air filters every three to four weeks. Units are equipped
with 2" pleated disposable filters. Filter rack is adjustable
for 1" permanent type filters. Do not use 1" disposable
filters. Replace using filters of like size and kind rated for
500 feet per minute.
WarnInG:
never operate the unit without a filter in place.
Dust and lint in the return air can build up
on internal components, resulting in loss of
efficiency, equipment damage, and possible
fire risk.
condensate Drain and outdoor coil
Inspect the condensate drain and outdoor coil at the
beginning of each cooling season. Remove any debris.
Clean the outdoor coil and hail guard louvers (optional)
as necessary using a mild detergent and water. Rinse
thoroughly with water.
Electrical
Inspect the electrical connections for tightness at the
beginning of each heating and cooling season. Service
as necessary.
cautIon:
label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.
Motor lubrication
The motors for the circulating air blower and outdoor
fans, are pre-lubricated at the factory. No further oiling is
required for the life of this product.
Blower compartment
The blower compartment should be cleaned monthly
during the heating and cooling seasons to remove any dirt
and lint that may have accumulated in the compartment
or on the blower and motor. Buildup of dirt and lint on the
blower and motor can create excessive loads on the motor
resulting in higher than normal operating temperatures
and possible shortened service life.
rEPlacEMEnt Parts
Replacement parts are available through all NORDYNE
distributors. When ordering, remember to have the
complete Model and Serial number of the unit.
ElEctrIcal
Transformers
Contactors
Thermostats
Capacitors
Relays
Defrost Boards
Motors
Fan Motor
Blower Motor
coMPonEnts
Expansion Valves
Cabinet Panels
Blower Assembly
Fan Grille
Gaskets
Reversing Valves
coMPonEnt FunctIons
High Pressure switch (HPs) - Prevents compressors from
operating at elevated pressures. High pressure switches
are located on both compressor hot gas lines and are
fitted with schrader cores. The switch is non-adjustable
set to open at 650 PSIG and must be manually reset.
low Pressure switch (lPs) - Prevents compressors from
operating at sufficiently low pressures due loss of charge.
Low pressure switches are located on both compressor
return gas lines and are fitted with schrader cores. The
switch is non-adjustable set to open at 5 PSIG and close
at 20 PSIG.
Freezestat - Prevents evaporator coils from freeze-ups due
to lack of airflow or below normal return air temperatures.
The switch is a non-adjustable, sealed, bi-metal sensor
set to open at 28° F and closes at 57° F
over-temperature limit control - The over-temperature
limit control acts to prevent the air temperature leaving the
unit from exceeding the maximum outlet air temperature.
If the limit opens, electric heat will shut off. Provided w/
electric heat kits.
Temperature Limit
Switches
Pressure Switches
Compressors
Filter Driers
Filters
Hail Guards
11
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