Performance, Precision, Partnership

ASK Series Rotary Screw Compressors

Complete unit

  • Ready for operation
  • Fully automatic
  • Super sound-proofed
  • Vibration-damped
  • All panels powder-coated
  • For ambient temperatures up to +45 °C


Sound insulation

Panels lined with laminated mineral wool


Vibration dampening

  • Anti-vibration mounts
  • Dual anti-vibration mount



  • Single stage with cooling fluid injection for optimal rotor cooling
  • Genuine Kaeser rotary screw airend with the SIGMA Profile



  • V-belt drive with automatic belt tensioning


Electric motor

  • IE3 premium efficiency motor
  • Premium quality German-made motor
  • IP 55
  • Insulation class F for greater power reserve


Electrical components

  • Control cabinet to IP 54
  • Control transformer
  • Siemens frequency converter
  • Volt-free contacts for ventilation control


Fluid and air flow

  • Dry air filter
  • Pneumatic inlet and venting valves
  • Cooling fluid reservoir with three-stage separator system
  • Pressure relief valve
  • Minimum pressure/check valve
  • Thermostatic valve and micro-filter in coolant circuit
  • All fully piped
  • Flexible couplings



  • Air-cooled
  • Separate aluminium coolers for compressed air and fluid
  • Radial fan meets the high requirements on fan efficiency demanded by the EU Directive 327/2011


Refrigerant dryers

  • CFC-free
  • R 134a refrigerant
  • Fully insulated
  • Hermetically sealed refrigerant circuit
  • Rotary refrigerant compressor with energy-saving, cycling shut-down feature
  • Hot gas bypass control
  • Electronic condensate drain

SIGMA Control 2 MCSIO (SC2IO) & SIGMA Control 2 (SC2)

  • ASK Series rotary screw compressors are optionally available with SC2IO or SC2 compressor control
  • "Traffic-light" LED indicators show operational status at a glance
  • Plain text display
  • 30 selectable languages
  • Soft-touch keys with icons
  • Fully automated monitoring and control
  • Selection of Dual, Quadro, Vario and Continuous control as standard
  • Interfaces: Ethernet
  • SD-card slot for data-logging and updates
  • RFID reader
  • Web server
  • Additional optional communications modules for: Profibus DP, Modbus, Profinet and DeviceNet (SC2 only)