Reznor S5BP Unit Installation Manual - Manual (Page 9)

9
the required liquid refrigerant pressure determined
in Step 3, then there is too much charge in the
system. Remove refrigerant and repeat Steps 1
through 3 until the system is correctly charged.
• If the pressure measured in Step 1 is less than the
required liquid refrigerant pressure determined in
Step 3, there is too little charge in the system. Add
refrigerant and repeat Steps 1 through 3 until the
system is correctly charged.
AIR ConDItIonER MAIntEnAnCE
WARnInG:
to prevent electrical shock, personal injury,
or death, disconnect all electrical power to
the unit before performing any maintenance
or service. the unit may have more than one
electrical supply.
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.
Routine maintenance should include the following:
• Inspect and clean or replace air filters at the
beginning of each heating and cooling season, or
more frequently if required.
• Inspect the condensate drain and outdoor coil at
the beginning of each cooling season. Remove
any debris. Clean the outdoor coil and louvers as
necessary using a mild detergent and water. Rinse
thoroughly with water.
• Inspect the electrical connections for tightness at
the beginning of each heating and cooling season.
Service as necessary.
CAutIon:
the unit should never be operated without a filter
in the return air system. Replace disposable
filters with the same type and size.
• Do not attempt to add additional oil to motors
unequipped with oil tubes. The compressor is
hermetically sealed at the factory and does not
require lubrication.
REPlACEMEnt PARtS
Replacement parts are available through all Nordyne distributors.
Please have the complete model and serial number of the unit when
ordering replacement parts.
Electrical:
Capacitors Temperature Limit Switches
Compressors Thermostats
Contactors Time Delay Relays
Pressure Switches Transformers
Relays
Motors:
Blower Motor
Fan Motor
Components:
Blower Assembly Fan Grille
Cabinet Panels Filter/Driers
Expansion Valves
CoMPonEnt FunCtIonS
Anti-Short Cycle timer (ASCt)
A protective short cycle timer is factory installed and located
in the control panel of the outdoor section. If power to the
compressor low voltage control circuit is interrupted, the
outdoor unit will not energize for approximately 5 minutes.
High Pressure Switch (HPS)
A high-pressure switch is factory-installed and located in
the liquid line internal to the outdoor unit. The switch is
designed to protect the system when very high pressures
occur during abnormal conditions. Under normal
conditions, the switch is closed. If the liquid pressure
rises above 650 psig, then the switch will open and de-
energize the outdoor unit. The switch will close again
once the liquid pressure decreases to 460 psig. Please
note that the switch interrupts the thermostat inputs to the
unit. Thus, when the switch opens and then closes, there
will be a 5 minute short cycling delay before the outdoor
unit will energize.
low Pressure Switch (lPS)
A low-pressure switch is factory-installed and located in
the suction line internal to the outdoor unit. The switch
is designed to protect the compressor from a loss of
charge. Under normal conditions, the switch is closed. If
the suction pressure falls below 5 psig, then the switch
will open and de-energize the outdoor unit. The switch will
close again once the suction pressure increases above 20
psig. Please note that the switch interrupts the thermostat
inputs to the unit. Thus, when the switch opens and then
closes, there will be a 5 minute short cycling delay before
the outdoor unit will energize.