Filter
Top Products
IRN37 - 160K - CC & IRN50 - 200H -CC & IRN75 - 160K - 2S & IRN100 - 200H - 2S & IRN 250 - 300H - 2S
http://air.irco.com
64
8.0 GENERAL INFORMATION
8.5 GENERAL DESCRIPTION
The compressor is an electric motor driven, contact
cooled screw compressor, complete with all necessary
components piped, wired and baseplate mounted. It is a
totally self contained air compressor package.
The standard compressor is designed to operate in an
ambient range of 1.7° C to 46° C (35° F to 115° F). The
standard maximum temperature of 46° C (115° F) is
applicable up to an elevation of 1000m (3280ft) above
sea level. Above this altitude significant reductions in
ambient temperature are required if a standard motor is
to be used.
The compressor is managed by the onboard electronic
controller. The controller and drive system operate
together to vary the speed of the compressor to deliver
compressed air at the target pressure.
Panel instrumentation is provided to indicate the
compressor operating conditions and general status.
The air/coolant mixture discharges from the compressor
into the separation system. This system removes all
but a few PPM of the coolant from the discharge air.
The coolant is returned to the cooling system and the
air passes to the aftercooler and out of the compressor
through the moisture separator.
Air is pulled into the machine by the cooling blower
(N250−300H use a propeller fan for cooling) and through
the combined cooler / aftercooler.
By cooling the discharge air, much of the water vapor
naturally contained in the air is condensed and is drained
from the built−in moisture separator and drain.
The coolant system consists of a sump, cooler,
thermostatic valve, anti−condensation valve and a
filter. When the unit is operating, coolant is forced by
air pressure from the separator tank to the thermostatic
element. The position of the element (a direct result
of coolant temperature) will determine whether the
coolant circulates through the cooler, bypasses the
cooler, or mixes the two paths together to maintain
an optimum compressor injection temperature. The
two position anti−condensation valve can reduce the
coolant flow and hence the temperature rise of coolant
through the compressor. This temperature is controlled
to preclude the possibility of water vapor condensing. By
injecting coolant at a sufficiently high temperature, the
discharge air coolant mixture temperature will be kept
above the dew point. On the N90/160K, N125/200H−SS,
N75/160K−2S, N100/200H−2S and N250/300H−2S, the
system is enhanced by a control logic that varies the
cooling blower speed dependant on the intake and
discharge temperatures and hence controls the injection
temperature even closer while saving blower motor
energy.
The compressor is provided with a temperature sensor
which will shut the unit down in case of excessive
temperature, 109° C (228° F).
Effective coolant filtration is provided by the use of a
screw on, heavy duty coolant filter.
NOTICE
Nirvana air comrpessors are factory filled with SSR ULTRA COOLANT which is designed to operate for 8,000
hours or two years, whichever comes first.
Units supplied with optional Food Grade Coolant are designed to operate 1000 hours or 6 months, whichever
comes first.
The coolant must be changed at these intervals to avoid breakdown and equipment damage.