AAON CL SERIES, Установка, эксплуатация и обслуживание

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Performance:
Improper location of the evaporative condenser
may seriously degrade the capacity of the
equipment. Make sure the equipment is located
such that discharge air from the condenser does
not enter the condenser air inlet.
Warranties:
Please refer to the limitation of warranties in
effect at the time of purchase.
Condenser Tube Inspection:
The coil is leak tested at 450 psig before shipment.
AAON will not be responsible for loss of
refrigerant. It is the responsibility of the installer
to verify that the system is sealed before charging
with refrigerant. If the unit is operated during low
ambient temperature conditions, freeze protection
for the recirculating water system must be
provided.
Freeze Protection:
In order to prevent water temperatures from
dropping below 50°F, this unit is equipped with a
variable frequency drive (VFD) on the fan motors
when the refrigeration system is operating.
Recirculating Water System:
Electric sump heaters are available to keep the
sump water from freezing when the refrigeration
system is not operating. An electric resistance
heater is supplied in the vestibule when sump
heaters are selected.
Note: The condenser must not be operated with
the fan on and the pump cycled on and off to
maintain head pressure control under any
conditions. The unit is equipped with a water
temperature controller which varies fan speed
to maintain sump water temperature. This unit
is not equipped with a compressor discharge
pressure controller for fan speed modulation
and therefore must not be operated without
water flow.
EVAPORATIVE CONDENSER - PRE
START-UP
Do not start the evaporative condenser or
compressors without installation of proper water
treatment chemicals. Contact your local water
treatment expert for correct selection of water
treatment chemical, adjustment of chemical feed
and bleed rates.
Reverse osmosis and deionized water is corrosive
and cannot be used on the CL evaporative cooled
condensing units.
Cleanliness:
Dirt and debris may accumulate in the sump
during shipping and storage. Clean the sump prior
to start-up to prevent clogging the water
distribution system. Any surfaces that show
contamination must be cleaned ONLY with a
commercial stainless steel cleaner to restore the
initial appearance. Inspect the inlet screens for
foreign material.
Pump Operation:
Before initial start of the pump, check as follows:
1. Be sure that pump operates in the direction
indicated by the arrow on the pump casing.
Check rotation each time motor leads have
been disconnected.
2. Check all connections of motor and
starting device with wiring diagram. Check
voltage, phase and frequency of line circuit
with motor name plate.
3. Check suction and discharge piping and
pressure gauges for proper operation.
4. Turn rotating element by hand to assure
that it rotates freely.
Running:
Periodically inspect pump while running, but
especially after initial start-up and after repairs.
1. Check pump and piping for leaks. Repair
immediately.