AAON CL-230 - Manual (Page 4)

4
GENERAL DESCRIPTION
All AAON 'CL Series' condensers are factory
assembled, wired, and charged with 15 lbs. of
refrigerant per system. Models are available for
air-cooled and evaporative-cooled applications.
Unpacking:
When received, the unit should be checked for
damage that might have occurred in transit. If
damage is found it should be noted on the
carrier’s Freight Bill. A request for inspection by
carrier’s agent should be made in writing at once.
Also, check the unit nameplate to ensure the
correct model size and voltage have been
received to match the job requirements.
OWNER'S INFORMATION
Warning:
• Failure to observe the following instructions
will result in premature failure of your system,
and possible voiding of the warranty.
• Never cut off the main power supply to the unit,
except for complete shutdown. When power is
cut off from the unit, any compressors using
crankcase heaters cannot prevent refrigerant
migration. This means the compressor will cool
down, and liquid refrigerant may accumulate in
the compressor. Since the compressor is designed
to pump refrigerant gas, damage may occur when
power is restored.
• Before unit operation, the main power switch
must be turned on for at least twenty four hours
for units with compressor crankcase heaters. This
will give the crankcase heater time to clear any
liquid accumulation out of the compressor before
it is required to run.
• Always control the system from the thermostat,
or control panel, never at the main power supply
(except for emergency or for complete shutdown
of the system).
• Improper installation, adjustment, alteration,
service, or maintenance can cause property
damage, personal injury or loss of life.
Installation and service must be performed by a
qualified installer, service agency or if gas fired
units, the gas supplier. Refer to installation
instructions provided with the unit and this
manual.
• The compressors must be on a minimum of 4
minutes and off for a minimum of 5 minutes. The
cycle rate must be no more than 8 starts per hour.
The compressor life will be seriously
shortened by reduced lubrication, and the
pumping of excessive amounts of liquid oil
and refrigerant.
Wiring Diagrams:
• A complete set of unit specific wiring diagrams
in both ladder and point-to-point form are
laminated in plastic and located inside the control
compartment door.