Atlas Copco GA90 (W) VSD User Manual

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2920 1190 05
Instruction book Industrial Air Division
1 Leading particulars
1.1 General description
GA50 (W) VSD and GA90 (W) VSD (Variable Speed Drive
motor) are stationary, single-stage, oil-injected screw
compressors driven by an electric motor.
The compressors are enclosed in a sound-insulated bodywork.
The front panel comprises an Elektronikon control module
including the start and stop buttons. An isolator switch is also
provided. An electric cabinet comprising the motor start and
speed control system is located behind this panel.
1.1.1 Air flow (Figs. 2)
Air drawn through filter (AF) and check valve (CV) into
compressor element (E) is compressed. Compressed air and
oil flow into air receiver/oil separator (AR). The air is
discharged through outlet valve (AV) via minimum pressure
valve (Vp), air cooler (Ca) and moisture trap (MT).
Minimum pressure valve (Vp) prevents the receiver pressure
from dropping below a minimum pressure.
AV. Air outlet valve
E1. Elektronikon control module
S0. Isolator switch
Fig. 1. General view of GA90 VSD
E1
SO
AV
F007

Atlas Copco GA90 (W) VSD Specifications

General

Brand	Atlas Copco
Model	GA90 (W) VSD
Category	Air Compressor
Language	English