Product Manual

Table Of Contents
Section 3
185 T4F Kubota User Manual 3: Description
02250216-781 R02
Subject to EAR, ECCN EAR99 and related export control restrictions. 19
Description
3.1 Introduction
The Sullair 185 CFM Standard Portable Air Compressor
offers superior performance, reliability and require a mini-
mal amount of maintenance. Compared to other com-
pressors, Sullair’s are unique
i
n terms of reliability and
durability. Compressor internal components require no
routine maintenance inspections.
3.2 Description of components
Figure 3-1 on page 20 shows the main components and
subassemblies of the Sullair 185 Standard Portable Air
Comp
ressor. These packages include a heavy duty
rotary screw air compressor, a diesel engine, fuel tank,
compressor inlet system, compressor cooling and lubri-
cation system, compressor discharge sy
stem, capacit
y
control system, instrument panel and electrical system. A
low profile canopy offers improved handling and mobility.
A clamshell canopy provides easy access to all service-
able components.
The control system can easily be adjusted for pressures
from
80 to 125 psig (5.6 to 8.6 bar). The compressor unit
is driven by an industrial diesel engine designed to pro-
vide enough horsepower to provide an adequate reserve
u
nde
r rated conditions.
Refer to the Engin
e Operator’s Manual for a more
detailed description of the engine. The engine cooling
system is comprised of a radiator, high capacity fan, and
thermostat. The high capacity fan pushes air through the
radiator to maintain the engine’s specified operating tem-
perature. The same fan also cools the fluid in the com-
pressor cooling and lubrication system.
The engine radiator and the compressor fluid cooler are
ne
xt
to each other allowing the fan air to push through
both simultaneously. As air passes through the fluid
cooler, the heat of compression is removed from the fluid.
3.3 Sullair compressor unit,
functional description
Sullair compressors are single-stage, positive displace-
ment, flood lubricated-type compressors that provide
cont
inuous (pulse-free) compression to meet various
demand loads. Sullair compressors require no routine
maintenance or inspection of their internal parts or sys-
tems. The compressor works by
injecting fluid into
the
compressor unit where it mixes directly with the air as the
rotors turn. The fluid flow has three main functions:
It acts as a coolant, to contro
l the rise of air
temperature which is generated by compres-
sion (heat of compression).
Seals the leakage paths between the rotors
and the stator and also between the rotors
themselves.
Lubricates the rotors allowing one rotor to
directly drive the other.
After the air/fluid mixture is discharged from the compres-
sor unit, the fluid is separated fr
om
the air. At this time,
the air flows to the service line and the fluid is cooled in
preparation for re-injection.
3.4 Compressor cooling and
lubrication system, functional
description
Refer to Figure 3-2 on page 21 The compressor cooling
and lubrication system is designed to provide adequate
lubr
ication as well as maintain the proper operating tem-
perature of the compressor. In addition to the fluid cooler
and inte
rconnecting piping, the system consists also of
three other components: a fluid filter, thermal valve, and a
fan which perform the following functions:
The fluid filter removes and collects any con-
taminants in th
e fluid.
The thermal valve functions as a temperature
regulator directing fluid either to the cooler or to
the compressor unit.
The fan pushes air through the cooler dissipat-
ing the heat resulting from compression of the
fluid.
The functions of the lubrication
syst
em are explained in
more detail below. Fluid is used in the system as a cool-
ant and as a lubricant: the receiver tank serves as the