Rotary screw blowers up to 250 kW


Unrivalled energy savings – uncompromising efficiency

The future has arrived in low pressure sector: Kaeser innovations such as the world-renowned SIGMA profile rotors offer efficiency gains of up to 35 percent! These reliable performers, which are built for toughness and continuous, trouble-free operation, also ensure maximum savings when it comes to commissioning, operation and maintenance.

  • High-efficiency and low-maintenance blower systems – dual shaft SIGMA blower blocks
  • Optionally available with Y/D starter (STC) or frequency converter (SFC)
  • Plug-and-play complete solution with power supply equipment, SIGMA CONTROL 2 controller and factory-adjusted belt drive; pre-filled with oil.

The new rotor technology benefits customers in the areas of municipal and industrial waste water treatment as well as flotation and fluidisation, where blowers are in constant operation. This makes energy efficiency a key factor.

Your advantages

  • Maximum efficiency of the entire machine:
    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.
  • Minimised 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.

Economical – thanks to low life cycle costs
Life-cycle costs

Our comprehensive approach guarantees optimal return on investment: Outstanding energy efficiency and maximum compressed air availability combined with a rapid response global service and support network.

 

Product details

Equipment

Plug-and-play

These turnkey blowers are delivered complete with all sensors, STC/SFC, SIGMA CONTROL 2 and emergency stop button; they are ready-filled with oil and are fully certified.

Blower airend

High-efficiency blower block with SIGMA profile

  • High-efficiency blower airend with SIGMA PROFILE rotors, ensuring maximum air delivery for minimal power consumption

Bearings and seals

  • Heavy-duty roller bearings for 100% absorption of radial forces
  • The rotary transmission lead-through on the blower airend drive shaft features a tried and tested, maintenance-free sliding ring seal

Drive motor

  • Siemens motors
  • Premium-efficiency IE3 motors deliver an unparalleled level of efficiency; HBS drive motor and frequency converter with system efficiency class IES2
  • Three PTC thermistors fitted as standard
  • Variable-speed versions calibrated with SFC frequency controller
  • Easily-accessed central lubrication port for fast and reliable maintenance of motors featuring regreasable bearings

Belt drive (EBS/FBS rotary screw blowers)

  • Automatic V-belt drive tensioning with indicator
  • Optimum transmission efficiency at all times
  • Reduced maintenance costs
  • Standard V-belt guard with additional belt cooling

Direct drive (CBS/DBS and HBS rotary screw blowers)

  • Integrated transmission with power transmission efficiency of almost 100%
  • HBS equipped with 1:1 direct drive
  • Selection of different transmission ratios available
  • Use of premium-quality electric motors
  • Exceptional bearing durability thanks to the transmission’s optimised power distribution

Pulse dampers

  • Efficient inlet and discharge absorption silencers with wide frequency range to dampen process air pulses
  • Minimal fluid noise in piping thanks to strong damping

SIGMA CONTROL 2

SIGMA CONTROL 2 – SD card slot

  • 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 storage 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

  • Open web browser
  • Input SC2 IP address and password
  • Access blower controller via integrated web server

The user interface displays machine status in real-time plus values from the analogue and digital inputs; it also lists warning/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.

Turnkey blowers: Just plug in and switch on

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

START CONTROL (STC)

Blower – START CONTROL (STC)

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)

Blower – SIGMA FREQUENCY CONTROL (SFC)

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 parametrisation is performed at the factory.

Technical specifications

Standard version

ModelCBS 121 L CBS 121 M DBS 221 L
Max. pressure differential – Gauge pressure mbar 650 1,100 650
Max. usable flow rate m³/min 12.6 12.5 23
Max. rated motor power kW 18.5 22 30
Max. pressure differential – Underpressure mbar - 550 -
Max intake volume m³/min - 12.5 -
Max. rated motor power kW - 15 -
Connection diameter DN 80 80 100
Dimensions with control cabinet and sound enclosure W x D x H mm 1,110 x 1,370 x 1,670 1,110 x 1,370 x 1,670 1,110 x 1,480 x 1,670
Max. mass kg 730 750 820

ModelDBS 221 M EBS 410 CL EBS 410 CM
Max. pressure differential – Gauge pressure mbar 1,100 650 1,100
Max. usable flow rate m³/min 22 41 30
Max. rated motor power kW 37 37 37
Max. pressure differential – Underpressure mbar 550 - 550
Max intake volume m³/min 22 - 41
Max. rated motor power kW 22 - 37
Connection diameter DN 100 150 150
Dimensions with control cabinet and sound enclosure W x D x H mm 1,110 x 1,480 x 1,670 1,280 x 1,760 x 1,820 1,280 x 1,760 x 1,820
Max. mass kg 850 1,400 1,400

ModelEBS 410 L EBS 410 M FBS 660 L
Max. pressure differential – Gauge pressure mbar 650 1,100 650
Max. usable flow rate m³/min 41 40 67
Max. rated motor power kW 55 75 90
Max. pressure differential – Underpressure mbar - 550 -
Max intake volume m³/min - 38 -
Max. rated motor power kW - - -
Connection diameter DN 150 150 200
Dimensions with control cabinet and sound enclosure W x D x H mm 1,460 x 1,760 x 1,970 1,460 x 1,760 x 1,970 2,250 x 1,950 x 1,900
Max. mass kg 1,520 1,520 1,850

ModelFBS 660 M HBS 1600 L HBS 1600 M
Max. pressure differential – Gauge pressure mbar 1,100 650 1,100
Max. usable flow rate m³/min 66 162 162
Max. rated motor power kW 110 200 250
Max. pressure differential – Underpressure mbar 550 - 500
Max intake volume m³/min 64 - 106.91
Max. rated motor power kW 75 - 160
Connection diameter DN 200 300 300
Dimensions with control cabinet and sound enclosure W x D x H mm 2,250 x 1,950 x 1,900 2,065 x 3,350 x 2,320 2,065 x 3,350 x 2,320
Max. mass kg 2,200 5,880 5,940

Wastewater treatment plant in the town of Kitzingen
Reduce energy consumption and boost air volume!

Reduce energy consumption by more than 20 percent through air system modernisation? You can find out how it's done in the reference story.

Kitzingen reference project
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