Introduction; Description Of Components; Encapsulated Compressor System; Section Description - Sullair ES-6 SERIES User Manual

ES-6 USER MANUAL

2.1 INTRODUCTION

Your new Sullair flood-lubricated rotary screw air
compressor will provide you with improved
reliability and greatly reduced maintenance.
Compared to other types of compressors, the
Sullair rotary screw is unique in mechanical
reliability, with "no wear" and "no inspection"
required of the working parts within the compressor
unit.
Read Section 6 (Maintenance) to keep your
compressor in top operating condition. Should any
questions arise which cannot be answered in the
following text, call your nearest Sullair office or the
Sullair Corporation Service Department.

2.2 DESCRIPTION OF COMPONENTS

Refer to Figure 2-1. The components and
assemblies of the ES-6 Series air compressor are
clearly shown. The complete compressor consists
of an encapsulated compressor system, inlet
system, cooling system and control system.
The compact design of the ES-6 Series air
compressor provides
serviceable components.
2.3 ENCAPSULATED COMPRESSOR
SYSTEM, FUNCTIONAL DESCRIPTION
Refer to Figure 2-2. The encapsulated compressor
includes compressor unit, fluid management
system, and motor section. The Sullair compressor
unit is a single-stage positive displacement
lubricated type compressor. This unit is equipped
with tapered roller bearings on the discharge, and
cylindrical roller bearings on the inlet end for high
load carrying capacity.
continuous pulse-free air compression to meet
your needs. With a Sullair compressor there will be
no maintenance or internal inspection of the
compressor.
WARNING
DO NOT remove caps, plugs and/or
other components when compres-
sor is running or pressurized.
Stop compressor and relieve all
internal pressure before doing so.
easy access to all
This unit provides
Section 2 - DESCRIPTION
Fluid is injected into the compressor unit in large
quantities and mixes directly with the air as the
rotors turn, compressing the air. The fluid flow has
three main functions:
1. As coolant, it controls the rise of air temperature
normally associated with the heat of compression.
2. It seals the leakage paths between the rotors
and the stator and also between the rotors
themselves.
3. It acts as a lubricating film between the rotors
allowing one rotor to directly drive the other, which
is an idler.
The air/fluid mixture discharges directly into the
fluid management system.
The fluid cooler bypass valve helps assure proper
cooling by directing the fluid to the fluid cooler
when discharge temperature
thermostat temperature setting.
During start-up in cool ambient conditions, the
cooler pressure drop will cause the filter bypass
valve to open up, assuring adequate fluid supply to
the compressor.
All fluid entering the compressor unit passes
through the replaceable fluid filter element. This
replaceable filter element contains a built-in bypass
valve. Under conditions of restricted flow through
the element, the bypass valve helps ensure
adequate compressor fluid flow, as well as helps
prevent element failure.
FLUID MANAGEMENT SYSTEM
The fluid management system consists of a multi-
chambered primary/secondary separator, the final
air/fluid separator element, cooler bypass group
and fluid filter.
As compressed air/fluid enters the sump, the first
fluid separation takes place due to a reduction of
flow speed coupled with a change of direction of
the flow within the sump housing. Then the
compressed air reaches the separator, where the
finest fluid drops and mist are separated.
MOTOR/DRIVE SECTION
The motor/drive section consists of a squirrel cage
induction motor and integrated drive gearing which
is separated from the motor by a replaceable shaft
seal.
reaches the
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