Atlas Copco Oil Injected Screw Compressors

(Model: GA15-26)


The new GA15-26 oil injected screw air compressors, available in 15kW, 18kW, 22kW and 26kW, provide an energy efficient, reliable work place air compressor that minimizes the total cost of ownership. These air compressors are designed to withstand the harshest of environments while providing you with a quiet air compressor with sound levels ranging between 65 and 69 dB(A). The GA15-26 series are designed and manufactured in accordance with ISO 9001, ISO 14001 and ISO 1217 which insures a reliable trouble free air compressor. Additionally these units boast a cool canopy design which increases efficiency and free air delivery. The GA15-26 units also utilize the next generation Elektronikon® controller that offers you a great variety of control and monitoring features that allow you to increase you compressor’s efficiency and reliability. As standard these units are designed to operate in 46°C/115°F ambient conditions and are available as a stand-alone compressor (Pack) or including an integrated dryer (Full Feature) .

GA15 1 GA15 2

The GA15-26 air compressors are available in 15kW, 18kW, 22kW and 26kW variants with flows ranging from 30.9 to 74.3 l/s (65.5 to 157.5 cfm).

The Pack (stand alone) compressors are constructed with the following major components:

  • State of the art compression element
  • IP55 (TEFC) motor meeting or exceeding IE3 and NEMA Premium efficiency standards with greased for life bearings
  • Elektronikon® controller
  • High efficiency aftercooler
  • Moisture separator
  • Inlet air filter

Additionally the Full Feature includes an integrated refrigerated air dryer.

The GA15-26 Air Compressors consist of the following:

1.1 Air / Oil Flow

Air is drawn in through the air filter, the inlet valve into the compression element. This compressed air is forced through the air/oil separator, past the minimum pressure valve and into the after-cooler through the water separator to the discharge. In the case of a Full Feature unit the air will then circulate through the refrigerated dryer and then to the discharge.


1.2 Drive Train


The high quality gear driven design does not use couplings which eliminates a maintenance point. The design of the gears has eliminated transmission losses that are typically 2-3% higher on belt driven units. The compression element has also been redesigned to provide even more free air delivery.

1.3 Air/Oil Separator System


The high efficiency air oil separation system provides excellent oil pre-separation with >99% of oil separated in the vessel providing less than 3ppm oil carry over. Due to the innovative design the chance for overfilling the unit has been eliminated. Additionally the compact size of this vessel there is less oil required and less compressed air blow off when the unit unloads resulting in money savings for you.

1.4 Cooling System


The reliable and efficient design of the combicooler effectively lowers the discharge temperature of the compressed air which reduces the burden placed on downstream air treatment equipment and provides better protection of air network piping. Additionally the low sound and low power consumption from the cooling fan makes these new units even more silent and efficient than ever.

1.5 Air Dryer (Full-Feature models)


The integrated dryer efficiently removes moisture, aerosols and dirt particles to protect your investment. This quality air expands the life of equipment, increasing efficiency and ensuring quality in your final product. Pressure dew point at 3°C /37°F at maximum FAD. (100% relative humidity at 20°C/68°F) Can be outfitted with optional DD and PD filters, allowing you to obtain the exact air quality you need for your specific application.


Elektronikon® MK5 regulator and control panel

The Elektronikon® standard is offered as standard for the GA 15-26 for fixed speed compressors with online visualization. Elektronikon® standard controls and monitors the key compressor parameters efficiently as stated below.

GA 15-26 compressors are equipped with the power conscious, efficient, automatic full-load / no-load regulation system. The Elektronikon® regulation is equipped with the delayed second stop feature (DSS) for the main motor which significantly cuts the electricity cost

The regulating system includes the Elektronikon® Standard module to regulate, control and monitor compressor operation. All GA 15-26 series Elektronikon® control modules display and monitor the following:

  1. Compressor Status Indication
    • Voltage on (LED indication)
    • Compressor loaded
    • Compressor unloaded
    • Compressor maximum allowed unloading pressure
    • Automatic operation (LED indication)
    • General warning/alarm (LED indication)
    • Service required (LED indication)


  1. Temperature, numerical readouts
  • Delivery air
  • Ambient air temperature


  1. Pressure, numerical readouts
  • Delivery air
  1. Compressor Control
  • Start / Stop
  • Emergency stop
  • Reset / Test


  1. Hourmeters
  • Total running hours
  • Total loading hours


  1. Service requirement indications
  • Air filter
  • Oil filter
  • Oil lifetime
  • Oil separator


  1. Compressor safety – warning indications
  • High dew point temperature
  • Sensor error


  1. Compressor safety – shutdown indications
  • High element outlet temp.
  • Drive motor/fan motor overload
  • Emergency stop


  1. Digital output relays for remote monitoring (voltage free)
  • Remote start and stop


  1. Optional upgradable to Elektronikon® graphic without rewiring


  1. Option energy saving through integrated multi compressor control (Elektronikon® Graphic only)
  • ES4i (up to 4 compressors)
  • ES6i (up to 6 compressors)


Energy Savings

State of the art compression element Low energy consumption and high output of compressed air.
Integrated Dryer with Saver cycle technology Reduces the energy consumption of the integrated air treatment in light load conditions. Water separation is improved. Pressure Dew Point (PDP) becomes more stable.
Fully Integrated & Compact design Controller to ensure optimum efficiency and reliability. Ensures compliance with your air requirements and makes the best use of your valuable floor space.
     Quiet Operation
Sound insulated canopy No separate compressor room is required. Allows for installation in most working environments
Highest Reliability
Robust Air filter Offers a long lifetime and high reliability for long service intervals and low maintenance needs. Air filter is very easy to replace.
IP55 (TEFC), IE3 Motor Totally enclosed fan cooled motor insures reliabilityEfficiency ratings at or above premium regulations