DESCRIPTION Section 2 - Pg 01
SECTION 2:
DESCRIPTION
2.1 Introduction
The Vanair
®
85 through 185 Hydraulic Driven Air Compressors offer superior
performance and reliability while requiring very minimal maintenance.
Your compressor is equipped with a Sullair rotary screw compressor unit. Compared to
other compressors, the Sullair is unique for its mechanical reliability, performance and
durability. The compressor never needs any inspection of the internal parts.
As you continue reading this manual and learn how the compressor operates and is
maintained, you will see how surprisingly easy it is to keep a Vanair air compressor in
top operating condition.
Read Section 6 (Maintenance) to keep your compressor in top operating condition.
Should any problem or question arise which cannot be answered in this text, contact your
nearest Vanair representative or the Vanair Manufacturing Service Department.
2.2 Sullair
®
Compressor Unit, Functional Description
Vanair compressors feature the Sullair compressor unit, a single-stage, positive
displacement, fluid lubricated-type compressor. This unit provides continuous pulse-free
compression to meet your needs. With a Sullair compressor, no maintenance or
inspection of the internal parts of the compressor unit is permitted in accordance with the
warranty.
Fluid is injected into the compressor unit and mixes directly with the air as the rotors turn
compressing the air. The fluid has three 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 your service line and the fluid is cooled in
preparation for re-injection.
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