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Kaeser's rotary screw blowers: more air for your money

Kaeser screw blowers use up to 35 percent less energy than conventional rotary blowers and even achieve significant energy savings compared to currently available screw blowers. The combination of a blower airend with high efficiency SIGMA Profile rotors, flow-optimized components, efficient power transmission and drive components ensures exceptional performance, guaranteed by Kaeser in accordance with the stringent requirements of ISO 1217.
Unit of Measure

Specifications

Brands

 N/A Kaeser Compressors

Model

 N/A DBS 221 L

Maximum Differential Gauge Pressure

 N/A 9.4 psi

Maximum Usable Flow Rate

 N/A 812 ft³/min

Maximum Rated Motor Power

 N/A 40 hp

Connection Diameter

 N/A 100 DN

Maximum Weight

 N/A 1808 lb

Dimensions

Width with Control Cabinet and Sound Enclosure

 N/A 43.7 in

Depth with Control Cabinet and Sound Enclosure

 N/A 53.8 in

Height with Control Cabinet and Sound Enclosure

 N/A 65.7 in

Additional Information

Additional Information

 N/A
  • High-efficiency and low-maintenance blower systems - dual shaft SIGMA blower blocks
  • Optionally available with wye-delta starter (STC) or frequency converter (SFC)
  • Plug-and-play complete package with power supply, SIGMA CONTROL 2 controller; pre-filled with oil.

Advantages

Advantages

 N/A
  • Maximum package efficiency - The combination of SIGMA Profile rotors, optimal motor-to-blower power transmission, and minimal pressure losses for all components ensures exceptional all-round efficiency.
  • Minimal pulsation in the connected process piping - Special silencers covering a wide frequency range significantly reduce machine and piping sound.
  • Reduced downtime - Highly durable components ensure reliable operation. The smart design eliminates the need for auxiliary devices (e.g. for sealing or cooling). Numerous sensors allow remote monitoring of operating status.

Low Life Cycle Costs

Low Life Cycle Costs

 N/A Our comprehensive approach to life cycle cost management: Superior efficiency, easy operation, service-friendliness, and the latest in technology to keep performance high well into the future.

Equipment

Plug-and-Play

 N/A These turnkey blowers come complete with sensors, STC/SFC, SIGMA CONTROL 2, an emergency stop push button, are pre-filled with oil.

Blower Airend

 N/A High-efficiency blower airend with SIGMA PROFILE rotors, ensures maximum air delivery with minimal power use

Bearings and Seals

 N/A
  • Heavy-duty roller bearings for 100% absorption of radial forces
  • Time-tested, maintenance-free mechanical drive shaft seal on the screw blower block
  • Exceptional bearing durability thanks to optimized power distribution in the transmission

International Efficiency (IE3) Motor

 N/A
  • Premium-efficiency IE3 motors deliver an unparalleled level of efficiency
  • Drive motor and frequency converter with system efficiency class IES2
  • Motor winding protection
  • Available with SFC frequency controller for variable speed systems
  • Easily accessible grease fittings

Power Transmission

 N/A
  • Optimum power transmission efficiency
  • Reduced maintenance costs
  • Premium quality electric motors

Pulsation Dampeners

 N/A
  • Efficient inlet and discharge absorption silencers with a wide frequency range to dampen process air pulsations
  • Minimal sound transfer to downstream piping

Sigma Control 2

 N/A
  • 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: EtherNet/IP, Profibus DP, Modbus, Profinet and DeviceNet
  • SD card slot for data logging and updates
  • RFID reader
  • Web server
  • KAESER CONNECT user interface
  • Visual representation of analogue and digital input values
  • Warning and fault messages
  • Graphical display of pressure, temperature and speed trends

Kaeser Connect

Kaeser Connect

 N/A
  • Web browser
  • Input SC2 IP address and password
  • Access blower control via integrated web server
The user interface shows machine status in real-time, the signals at the analogue and digital inputs, lists warning and fault messages, and graphically displays pressure, temperature and speed trends.

Plug-and-Play

Just Plug it in, Switch it on and it's Ready to Go.

 N/A The turnkey blowers come complete with a frequency converter or Y/D starter, SIGMA CONTROL 2 and emergency stop push button. This significantly reduces the work, costs and risks required for planning, installation, certification, documentation and commissioning.

Start Control (STC)

 N/A The version with integrated Y-Δ-starter for constant speed operation is equipped with a premium contactor, overload protection cut-out, and phase loss monitoring. Rounding off the package: the SIGMA CONTROL 2 controller and a reliable emergency stop system.

Sigma Frequency Control (SFC)

 N/A Using variable speed control, the SFC frequency converter adjusts the flow to match application air demand. Everything is ready for immediate operation, since all programming and parameterization is performed at the factory.
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