VARIABLE SPEED DRIVE ROTARY SCREW RANGE
(GA 18 - 90 VSD SERIES)

GA 18 -9 0 VSD Oil Injected Rotary Screw Compressor series

Assured Reliability

The GA is designed, manufactured and tested in accordance with ISO 9001, ISO 14001 and ISO 1217, Ed. 3, Annex C. The latest generation of Atlas Copco’s unique patented oil-injected screw elements, powered by a maintenance-free drive system, ensure a long and trouble free life at the lowest operating cost. Engineered to provide reliability even in ambient temperatures up to 55°C/131°F, the GA takes reliability to a new level.

Reduced Energy Costs

The cost of compressed air can represent over 40% of your total electrical costs. Atlas Copco wants to help you spend less. Our GA VSD (Variable Speed Drive) compressors can reduce energy costs by an average of 35% and overall compressor lifecycle costs (LCC) by an average of 22% by tuning compressor capacity to the air demand. The resulting energy savings have a substantial environmental impact, reflecting Atlas Copco’s dedication to safeguarding a healthy future for the generations to come.

Air System Integration

The GA brings the compressed air system to where you need it: the point of use. Its low noise operation and integrated air treatment equipment eliminate the need for a separate compressor room – reducing piping costs and internal system pressure drop. GA compressors are delivered ready for use, reducing installation costs to a minimum.

Easy Installation

WorkPlace: complete versatility, total capability

With its compact footprint, low noise operation and integration of air and condensate treatment equipment, the GA offers complete versatility for your production. The GA’s integrated design allows the compressor to be placed on the production floor, reducing external piping costs and minimizing pressure drop across the system. This increased efficiency can create strong energy savings for your business.

Lowered installation costs

  • The GA can operate close to the point of use – eliminating the need for a dedicated compressor room.
  • The GA is delivered ready for use – minimizing production downtime and reducing installation costs.
  • With filtration equipment integrated, the GA reduces the need for costly external piping.

Reducing energy and maintenance costs

  • With less piping in the workplace, the GA minimizes pressure drop across the system which can reduce energy costs.
  • The filtration system produces clean air to prevent network corrosion – minimizing energy, repair and maintenance costs.
  • The GA operates at the lowest possible system pressure to reduce energy costs thanks to the Elektronikon® advanced monitoring system.

Control and Monitoring

Total control, assured efficiency

The Elektronikon operating system provides control and monitoring to increase your compressor’s efficiency and reliability. Easily expanded with extra sensors, digital inputs and internet communication functions, the Elektronikon can be adapted to your specific needs – offering simple, central monitoring and control of up to four compressors (MCC). For optimal ease of use, the display can be set to 27 different languages. To maximize energy efficiency, the Elektronikon controls the main drive motor and regulates system pressure within a predefined and narrow pressure band. With a simple push of a button, you can remote start and stop, load and unload the compressor.

1. Multiple Compressor control

  • The Elektronikon’s Multiple Compressor Control (MCC) centrally controls up to four compressors simultaneously. The result is a substantial reduction in system pressure and energy consumption, in addition to minimal compressed air leakage and a more stable pressure across the network.

2. Dual pressure set point

  • The production process creates fluctuating levels of demand which can create energy waste in low use periods. The Elektronikon can manually or automatically create two different system pressure bands to optimize energy use and reduce costs at low use times.

3. Delayed second stop

  • The sophisticated Delayed Second Stop (DSS) runs the drive motor only when needed. Because the Elektronikon maintains the desired system pressure while minimizing the drive motor run time, energy consumption is kept at a minimum.

4. Saver Cycle

  • Saver cycle technology reduces the energy consumption of the integrated refrigerant dryers in light load applications. Using an ambient sensor to monitor the required dew point suppression, the Elektronikon starts and stops the dryer when the compressor has stopped – minimizing energy use and protecting the air system from corrosion.

Oil Injected Rotary Screw Compressors with integrated Variable Speed Drive (VSD)

Built-in reliability

1. Maintenance free drive system

  • The GA drive system is 100% maintenance free – eliminating the risks inherent to the greasing of conventional motor bearings.
  • Patented technology allows the drive system to run in ambient temperatures up to 55°C/131°F.*

2. Oil filter

  • A high efficiency oil filter removes 300% smaller particles than conventional filter, providing clean oil to extend the lifetime of all lubricated parts in the compressor.
  • The oil filter rating of ß12=75 sets a new industrial compressor standard that is fully compliant with ISO 16889.

3. Aftercooler with integrated water separator

  • The GA’s aftercooler with integrated water separator immediately removes all condensate - minimising the risk of corrosion in downstream equipment.
  • The aftercooler with integrated water separator removes 100% of condensate, improving air quality compared to conventional cyclone separators.

4. Electronic water drains

  • The GA’s no loss drains eliminate the waste of compressed air that conventional drains create.
  • The drains communicate with the compressor controller to ensure the constant removal of condensate.
  • A large diameter drain port removes the potential for clogging, providing trouble free operation.

5. Electrical cubicle cooling booster

  • The main cooling fan cools the electrical cubicle, ensuring operating temperatures are strictly regulated even in ambient temperatures up to 55°C/131°F.*

* Standard up to 46°C/115°F, optional high ambient version up to 55°C/131°F.

6. Oil separator

  • Innovative filter material removes oil particles from the compressed air while minimizing pressure drop. This results in optimal air quality at the highest efficiency.

7. Inlet valve

  • The inlet valve is sized for maximum flow to eliminate any inefficient pressure drops.
  • The valve is operated through vacuum and air pressure to offer superior reliability compared to spring operated inlet valves.

8. Inlet filter

  • A heavy duty air intake filter protects the compressor components by removing 99.9% of dirt particles down to 3 microns.

Energy efficiency

Energy can represent over 70% of a compressor’s lifecycle costs (LCC). Generating compressed air can account for more than 40% of a plant’s total electricity bill. Most production environments have a fluctuating air demand depending on the time of day, week, or even months of the year. These fluctuations in air demand can range from 40 to 80%. With Atlas Copco’s VSD technology mirroring compressed air requirements, fluctuating demand no longer equals fluctuating energy costs.

LCC of Standard Compressor & LCC of VSD Compressor

a. Energy Consumption

b. Investment

c. Maintenance

d. Installation

e. Average 35% Energy Savings

Because there is no unnecessary power generated, the GA VSD can reduce energy costs by 35% or more. Cost reductions can average 22% over the entire lifecycle of the compressor. In general, the extra cost of a VSD compressor compared to a fixed speed one is earned back after just one to two years.

The GA VSD reduces energy costs by

  • Eliminating the inefficient transition period from full to no load power.
  • Avoiding operation at no load power compared with conventional compressors at light load.
  • Maintaining the net pressure band to within 0.10 bar, 1.5 psi.
  • Reducing overall average working pressure.
  • Minimizing system leakage due to a lower system pressure.
  • Increasing flexibility with soft starting gradual motor ramp-up to avoid electricity surges.
  • Offering flexible pressure selection from 4 to 13 bar with electronic gearing to ensure lowered electricity costs.

 

  
 

 

  
     
   
 

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