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VSG/VSSG • Installation, Operation and Maintenance Manual •Vilter/Emerson • 35391SSG
System Unit Identifi cation
To keep defi nitions of units simple and consistent, Vilter has defi ned the following three:
• Bare Shaft Compressor
• Compressor Unit
• Package Unit
Bare Shaft Compressor
A bare shaft compressor is just the compressor with no coupling and motor nor foundation.
Compressor Unit
A compressor unit consists of the bare shaft compressor with the coupling, motor, oil separator, frame, micro-control-
ler system and oil system. A compressor unit typically a single screw compressor unit, is not mounted on a structural
steel base.
Package Unit
A package unit is a complete system mounted on a structural steel base with interconnecting piping.
Section 1 • General Information