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ASD Series Rotary Screw Compressors

You can meet virtually any compressed air demand with fluid-injected rotary screw compressors from Kaeser. We offer a huge selection of compressors ranging from 18.5 kW right up to 315 kW. All models are equipped with energy-saving 1:1 direct drive. The motor drives the airend directly without transmission loss via a maintenance-free coupling.

You can choose between the following models:

* For integration in your compressed air station: our basic model
* With refrigeration dryer for high compressed air quality: T versions (ASD, BSD, CSD, CSDX and DSD series)
* With variable-speed drive for optimal efficiency and broad control range: SFC models
* New: With synchronous reluctance motor: Significantly greater efficiency – especially in the partial load range – than comparable asynchronous systems enables considerable energy savings.
* As complete solutions with integrated refrigeration dryer and variable-speed drive: T SFC versions (ASD, BSD, CSD, CSDX and DSD series)

Exceptional efficiency: The use of IE3 motors has been mandatory in the EU since January 2015. Furthermore, we already use IE4 motors in our BSD – FSD models with 1:1 drive to provide you with even further energy savings.

Longer service life:
Electronic thermal management dynamically controls the fluid temperature of ASD, BSD, CSD, CSDX, DSD, DSDX, ESD and FSD series compressors. This not only saves additional energy, but also reliably prevents condensate formation and associated moisture damage.

Complete package
* Ready for operation
* Fully automatic
* Super silenced
* 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

Airend
* Single stage with cooling fluid injection for optimal rotor cooling
* Genuine KAESER screw compressor airend with energy-saving SIGMA Profile
* 1:1 drive

Drive
* Directly coupled without gearing
* High-flex coupling

Electric motor
* Super-Premium-Efficiency IE4 motor
* Premium quality German-made motor
* IP 55
* Insulation class F for greater power reserve
* Pt100 winding temperature transducer for motor monitoring
* Regreasable bearings

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
* ETM Electronic Thermal Management and eco fluid filter in coolant circuit
* All fully piped
* Flexible couplings

Cooling
* Air-cooled
* Separate aluminium coolers for compressed air and fluid
* Radial fan with separate electric motor
* Electronic Thermal Management (ETM)

Refrigeration dryers
* CFC-free
* Contains fluorinated greenhouse gas R-513A
* Fully insulated
* Hermetically sealed refrigerant circuit
* Rotary refrigerant compressor with energy-saving, cycling shut-down feature
* Hot gas bypass control
* Electronic condensate drain
* Upstream refrigeration dryer with ECO-DRAIN

Heat recovery (HR)
* Optionally available with integrated heat recovery system (plate-type heat exchanger)

SIGMA CONTROL 2 (HR)
* Traffic-light LEDs for at-a-glance operational status
* Easy-to-read display
* 30 selectable languages
* Soft-touch icon buttons
* Fully-automatic monitoring and control
* Dual, Quadro, Vario and Continuous control modes available as standard
* Interfaces: Ethernet
* Additional optional communication modules for: Profibus DP, Modbus, Profinet and DeviceNet
* SD card slot for data logging and updates
* RFID reader
* Web server

The technical specifications can be found in this brochure:

Rotary Screw Compressors ASD Series – Brochure