Instruction book
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GA 37 VSD up to GA 45 VSD are single-stage, oil-injected screw compressors driven by an electric 
motor. 
The  compressors  are  enclosed  in  a  sound-insulated  bodywork  and  are  available  in  air-cooled  and 
water cooled version. 
The compressors are controlled by the Atlas Copco Elektronikon® Graphic regulator. 
The  electronic  control  module  is  fitted  to  the  door  at  the  right  side.  An  electric  cabinet  comprising 
fuses, transformers, relays, etc. is located behind this panel. 
Atlas  Copco's  integrated  VSD  (Variable  Speed  Drive)  technology  mirrors  air  usage,  automatically 
adjusting the motor speed depending on the compressed air demand.
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