Introduction; Compressor Component Description - Sullair ShopTek ST400 User Manual

2.1

INTRODUCTION

The design of the Sullair ShopTek line of compressor
units is a single stage, positive displacement, flooded
rotary screw. A complete package includes the:
• Compressor unit
• Electric motor
• Starter
• Compressor inlet and discharge systems
• Compressor lubrication and cooling system
• Controller
• Aftercooler (ST1100 and ST1500 only)
• Heavy gauge steel mounting frame
CAUTION
Use only one type of a recommended com-
pressor lubricant. Adding a different one, or
mixing lubricants can cause damage and/or
malfunctions, and will void the compres-
sor's warranty.
New compressors are shipped from the factory fully
charged with Sullube
SPECIFICATIONS Section 3.3 and Section 3.4
describe lubrication
recommendations for each compressor package.
NOTE
The compressor requires no internal
inspections or maintenance actions. Open-
ing the compressor's housing may void its
warranty. (This does not apply to the shaft
seal or inlet valve which are replaceable.)
Section 2
DESCRIPTION
lubrication fluid. The
requirements and
02250180-090 R00
S
HOP
External piping, connectors, and the enclosure
should be inspected and maintained in accordance
with the procedures and recommendations in this
manual.
2.2 COMPRESSOR
COMPONENT DESCRIPTION
The ShopTek compressor (Figure 2-1 and Figure 2-
2) uses a fan to draw outside air into the enclosure,
cooling the motors, the combined radiator fluid
cooler, and air aftercooler. This hot air is then vented
out of the top of the enclosure.
Fluid is injected into the compressor, and mixes
directly with the air as the rotors turn which
compresses the air. The fluid flow has three basic
functions:
1. As a coolant, it controls the air temperature
rise normally associated with the heat of
compression.
2. Seals the clearance paths between the
rotors and the stator, and also between the
two rotors.
3. Provides a lubricating film between the rotors
allowing one rotor to directly drive the other,
which is an idler, and also lubricates the
bearings.
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, and then to the service line while the fluid
is cooled and filtered in preparation for reinjection.
USER MANUAL
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