Section 2
DESCRIPTION
6
2.3 SULLAIR COMPRESSOR UNIT, FUNCTIONAL
DESCRIPTION
Sullair air compressors feature the Sullair compres-
sor unit, a single-stage, positive displacement fluid
lubricated-type compressor. This unit provides con-
tinuous air compression to meet your needs.
Fluid is injected into the compressor unit where it
mixes directly with the air as the internal 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 leakage 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 to the serv-
ice line and the fluid is cooled in preparation for re-
injection.
With a Sullair compressor, there is no mainte-
nance or inspection of the internal parts of the
compressor unit permitted in accordance with
the terms of the warranty.
2.4 COMPRESSOR COOLING AND LUBRICATION
SYSTEM, FUNCTIONAL DESCRIPTION
Refer to Figures 2-2, 2-3, 2-4, 2-5A, 2-5B, 2-5C, 2-
5D and 2-5E. The cooling and lubrication system
consists of a fluid cooler, full flow fluid filter, full
flow oil pump, fluid stop valve, thermal valve.
Normally the pressure in the receiver/sump causes
Figure 2-1B Sullair Series LS-32 Rotary Screw Compressor (Rear View)
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