Sullair 3009 - Compressor Unit Functional Description

2.2 DESCRIPTION OF COMPONENTS
Refer to Figure 2-1 and Figure 2-2. The components and
assemblies of the air compressor are clearly shown. The
complete package includes compressor, electric motor,
starter, compressor inlet system, compressor discharge
system, compressor lubrication and cooling system,
capacity control system, WS Controller, aftercooler, a
combination separator and trap, all mounted on a heavy
gauge steel frame.
On air-cooled models, a fan draws air into the enclosure
over the fan and main motors through the combined
aftercooler and fluid cooler thereby removing the
compression heat from the compressed air and the
cooling fluid, and forces it out the top of the machine.
On water-cooled models, a shell and tube heat exchanger
is mounted on the compressor frame. Fluid is piped into
the heat exchanger where compression heat is removed
from the fluid. Another similar heat exchanger cools the
compressed air.
Both air-cooled and water-cooled versions have easily
accessible items such as the fluid filter air/oil separator and
control valves. The inlet air filter is also easily accessible
for servicing.
2.3 SULLAIR COMPRESSOR UNIT,
FUNCTIONAL DESCRIPTION
Sullair air compressors feature the Sullair compressor unit,
a single-stage, positive displacement, flood lubricated-
type compressor. This unit provides continuous
compression to meet your needs.
NOTE
With a Sullair compressor, there is no
maintenance or inspection of the
internal parts of the compressor unit
permitted in accordance with the
terms of the warranty.
The 3000-4500 Series compressors are factory-filled with
Sullube lubricant. For more information on fluid fill, consult
SPECIFICATIONS on page 17.
Sullair 24KT compressors are filled with a fluid that rarely
needs to be changed. Use only Sullair 24KT fluid in the
event that a fluid change is required.
CAUTION
Mixing of other lubricants within the
compressor unit will void all
warranties.
Sullair recommends that a 24KT sample be taken at the
first filter change and sent to the factory for analysis. This
is a free service. The sample kit with instructions and self-
addressed container is to be supplied by your Sullair
dealer at start-up. The user will receive an analysis report
with recommendations.
Fluid is injected into the compressor unit hoses and mixes
directly with the air as the rotors turn, compressing the air.
The fluid flow has three basic functions:
1. As coolant, it controls the rise of air temperature
normally associated with the heat of compression.
2. Seals the clearance paths between the rotors and the
stator and also between the rotors themselves.
3. Acts as a lubricating film between the rotors allowing
one rotor to directly drive the other, which is an idler.
After the air/fluid mixture is discharged from the
compressor unit, the fluid is separated from the air. At
this time, the air flows through an aftercooler and
separator then to your service line while the fluid is
being cooled in preparation for reinjection.
SECTION 2
8
3000-4500 Operator’s Manual and Parts List
®SULLAIR®