COMPACT rotary blowers up to 200 kW

Smart design, compact and ready for immediate use

Our COMPACT blowers are optionally available as a complete package with integrated electrical equipment. This ensures easy commissioning and maintenance as well as reliable and economical operation:

  • Space-saving blowers – complete with sound enclosure. Modular concept permits easy expansion (models BB C to FB C and HB 950 C)
  • Also suitable for nitrogen conveying applications (CN versions)
  • OFC and STC models as complete plug-and-play systems with integrated electrical controls and power supply: optionally available with a star-delta starter or variable speed control (STC and OFC versions)

Your advantages

  • Plug and play set-up saves time and money.
    Blowers with integrated controls result in considerable savings for planning, installation, commissioning, data communication and certification.
  • Safe and reliable conveying, optimised for your needs:
    Our SIGMA CONTROL 2 controller not only makes complete systems more efficient, it also continually monitors and transmits performance and status data. The result: Maximum reliability and availability
  • Compact footprint thanks to intelligent enclosure design:
    COMPACT blower with sound enclosure. In the STC version, units can be installed side by side, as maintenance access is at the front and air connections are located at the rear.

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

Blower block

Rotary blower packages with OMEGA profile

  • Robust and durable
  • Energy-efficient Omega Profile rotors
  • Wide control range

Drive motor

  • Brand-name product
  • IE3 high-efficiency motor
  • Three PTC thermistors as standard
  • Calibrated with OFC frequency controller for variable-speed systems
  • Easily accessible, central lubrication port for motors with regreasable bearings for fast and safe maintenance

Sound insulation

  • The system’s blower and motor cooling air is drawn in from outside the sound enclosure from the cooler ambient surroundings for maximum energy efficiency.
  • Effective sound-proofing provided by thick-walled lining with dense foam and damping louvres over intake and exhaust openings
  • Absorption silencer minimises process air pulsation downstream from the blower block.
  • Low residual pulsation and therefore minimal sound transfer to downstream piping.

Power transmission

  • High degree of efficiency
  • Automatic belt tensioning for consistently high power transmission ratio
  • V-belt guard
  • Belt tensioning device also serves as motor lifting device when changing the belt.

SIGMA CONTROL 2

SIGMA CONTROL 2 compressor controller

  • SIGMA CONTROL 2 with blower-specific software
  • Display and RFID reader provide effective communication and enhanced security.
  • High flexibility and easy integration into management system through variable interfaces
  • SD card reader for quick and easy updates and logging of operating data

ACA aftercoolers

Aftercoolers for blowers

  • High-efficiency ACA aftercoolers specially developed by KAESER KOMPRESSOREN for operation with rotary blowers
  • Reduction in blowing air temperature to max. 10 °C above ambient whilst maintaining optimum pressure with no cooling water required
  • Electrical connection can be implemented directly in the blower control cabinet.

Innovative installation concept

To save space, multiple COMPACT blower units can be installed side by side.

  • All maintenance and installation work can be performed through the front or top of the unit.
  • All valves are mounted directly on the blower unit.
  • The pipe connections and cooling air apertures are located at the rear.

Station with DBC blowers and SIGMA AIR MANAGER

Accessible from the front: 

  • Belt tensioning device and tension indicator (two-section belt guard for larger units)
  • Intake filter inspection and change
  • Motor terminal strip
  • Oil drain and filling plug, oil level inspection

Outdoor installation - no problem!
Outdoor installation of KAESER blowers

Outdoor installation of Kaeser blowers is simple and inexpensive. The specially designed shields to protect the air inlet apertures against heavy rain are equipped with a bird screen. A stainless steel shielding roof also provides protection against overheating through exposure to the sun.

Accessories: Start control (STC) and OFC frequency control

Start control (STC)

Start control (STC)

Installed in the control cabinet: a star-delta starter (with remote operation capability), a sound enclosure fan control, an operating hours counter and KAESER CONTROL (the interface to Kaeser's service facility).

OFC-type frequency control

OFC-type frequency control

Frequency control enables infinite blower speed adjustment and, with the addition of a pressure sensor, also enables pressure regulation. The control unit coordinates operation of the frequency controller and the blower unit. Flexibility is further enhanced by the supplied signal output / input and Profibus connections.

Technical specifications

Standard version

ModelBB 52 C BB 69 C BB 89 C
Max. pressure differential – Gauge pressure mbar 1,000 1,000 1,000
Max. usable flow rate m³/min 4.7 5.9 8.2
Max. pressure differential – Underpressure mbar 500 500 500
Max intake volume m³/min 4.7 5.9 8.3
Max. rated motor power kW 7.5 11 15
Connection diameter DN 50 65 65
Dimensions without sound enclosure W x D x H mm 785 x 635 x 940 890 x 660 x 960 890 x 660 x 960
Max. mass without sound enclosure kg 140 195 201
Dimensions with sound enclosure W x D x H mm 800 x 790 x 1,120 960 x 780 x 1,200 960 x 780 x 1,200
Max. mass with sound enclosure kg 210 325 331

ModelCB 111 C CB 131 C DB 166 C
Max. pressure differential – Gauge pressure mbar 800 1,000 1,000
Max. usable flow rate m³/min 8.8 12.3 15.6
Max. pressure differential – Underpressure mbar 400 500 500
Max intake volume m³/min 8.9 12.4 15.7
Max. rated motor power kW 18.5 30 37
Connection diameter DN 80 80 100
Dimensions without sound enclosure W x D x H mm 855 x 1,010 x 1,290 855 x 1,010 x 1,290 990 x 1,070 x 1,120
Max. mass without sound enclosure kg 263 302 432
Dimensions with sound enclosure W x D x H mm 990 x 1,160 x 1,290 990 x 1,160 x 1,290 1,110 x 1,160 x 1,290
Max. mass with sound enclosure kg 443 482 632

ModelDB 236 C EB 291 C EB 421 C
Max. pressure differential – Gauge pressure mbar 1,000 1,000 1,000
Max. usable flow rate m³/min 21.1 28.6 40.1
Max. pressure differential – Underpressure mbar 500 500 500
Max intake volume m³/min 22.3 28.8 40.4
Max. rated motor power kW 45 75 75
Connection diameter DN 100 150 150
Dimensions without sound enclosure W x D x H mm 990 x 1,070 x 1,120 1,240 x 1,370 x 1,510 1,240 x 1,370 x 1,510
Max. mass without sound enclosure kg 482 921 966
Dimensions with sound enclosure W x D x H mm 1,110 x 1,160 x 1,290 1,420 x 1,600 x 1,700 1,420 x 1,600 x 1,700
Max. mass with sound enclosure kg 682 1,261 1,306

ModelFB 441 C FB 621 C FB 791 C
Max. pressure differential – Gauge pressure mbar 1,000 1,000 800
Max. usable flow rate m³/min 41.3 58.5 17.3
Max. pressure differential – Underpressure mbar 500 500 450
Max intake volume m³/min 41.6 58.9 71.8
Max. rated motor power kW 90 132 110
Connection diameter DN 200 200 250
Dimensions without sound enclosure W x D x H mm 1,790 x 1,450 x 1,750 1,790 x 1,450 x 1,750 1,870 x 1,450 x 1,900
Max. mass without sound enclosure kg 1,450 1,965 1,717
Dimensions with sound enclosure W x D x H mm 1,920 x 1,620 x 1,910 1,920 x 1,620 x 1,910 1,920 x 1,620 x 2,090
Max. mass with sound enclosure kg 1,960 2,375 2,247

ModelHB 950 C
Max. pressure differential – Gauge pressure mbar 1,000
Max. usable flow rate m³/min 93.1
Max. pressure differential – Underpressure mbar 500
Max intake volume m³/min 91.65
Max. rated motor power kW 200
Connection diameter DN 250
Dimensions without sound enclosure W x D x H mm 1,700 x 1,700 x 1,950
Max. mass without sound enclosure kg 3,005
Dimensions with sound enclosure W x D x H mm 2,170 x 1,864 x 2,110
Max. mass with sound enclosure kg 3,805