Compressed air station standard models: The AIRTOWER series

Airtower 7.5 hp screw compressor with tank and dryer

Compressed air stations with integrated refrigerated dryer and air receiver

Compressed air stations (*) from the AIRTOWER series have been especially designed by KAESER for trades and crafts applications. Featuring a footprint of just 6.7 ft², they combine all of the components required for a compressed air supply beneath a single, durable polyethylene enclosure: a rotary screw compressor with the SIGMA PROFILE, a refrigerated dryer and an air receiver.

Compressed air stations from the AIRTOWER series are available with the following performance specifications:

  • Pressure: 125, 154 and 217 psig
  • Flow rate range: 9 to 29 cfm

Your benefits

  • Plug and play:
    Our all-in-one compressed air systems require minimal effort when it comes to piping and installation. Simply connect the station to a power supply and your compressed air network and that’s it – you’re ready to go!
  • Protected from corrosion damage:
    Thanks to the integrated refrigeration dryer, AIRTOWERS deliver high-quality compressed air that protects your tools and equipment from corrosion damage.
  • Simple maintenance:
    All maintenance points are easily accessible by lifting off the lightweight, removable enclosure constructed from rotomolded polyethylene. The electronic condensate drain can be inspected via a grille. Maintenance is simple and effective.

* This dryer series contains fluorinated greenhouse gases. All models contain refrigerant R-513A (GWP 631).

Low life cycle costs
Life-cycle costs

Our comprehensive approach to life cycle cost management: Superior efficiency, easy operation, service-friendliness, and a global service and consulting network with fast response times.

 

The AIRTOWER in detail:

Equipment

Complete unit

SXC service – removable enclosure
  • Ready-to-run
  • Fully automatic
  • Super silenced
  • Vibration-damped
  • Double-skinned rotational molded polyethylene enclosure
  • Optimal accessibility of all service points after cover removal

Sound insulation

  • Sound enclosure
  • Dual anti-vibration mounts

Electric motor

  • Energy-saving motor (IE3)
  • Quality German manufacture
  • IP 54
  • Insulation class F for greater power reserve

Rotary screw airend

SIGMA PROFILE rotors require approximately 10 to 20 percent less energy than conventional rotors of the same air delivery capacity.

V-belt drive

  • Maintenance-free belt
  • No re-tensioning necessary

Fluid and air flow

  • Honeycombed dry air filter
  • Inlet with check valve
  • Pneumatic venting valve
  • Cooling fluid tank with separately installed separator cartridge
  • Pressure relief valve
  • Minimum pressure/check valve
  • Micro-filter in the cooling fluid circuit

Cooling

  • Air-cooled
  • Aluminum cooler for cooling fluid with separate fan motor
  • Second fan on drive motor shaft
  • Automatic warm run control (only active at very low loads)

Receiver

  • Internally coated
  • Electronically controlled condensate drain

SIGMA CONTROL 2

SIGMA CONTROL 2 compressor controller
  • 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
  • Interfaces: Ethernet
  • SD card slot for data logging and updates
  • RFID reader
  • Web server

Electrical components

  • Control cabinet to IP 54
  • Automatic star-delta contactor combination (above 4 hp)
  • Overcurrent trip
  • Control transformer

Refrigerated dryers

  • Control cabinet to IP 54
  • Automatic star-delta contactor combination (above 4 hp)
  • Overcurrent trip
  • Control transformer
  • Contains fluorinated greenhouse gas R-513A
AIRTOWER component layout
SXC component layout
  1. Air filter
  2. Airend
  3. Drive motor
  4. Automatic belt tensioning
  5. Fluid separator tank
  6. Cooler
  7. Air receiver
  8. ECO DRAIN condensate drain
  9. Refrigerated dryer
  10. Compressed air outlet
  11. Control valve
Technical specifications

Standard version

ModelAirtower 3C Airtower 4C Airtower 5C
Working pressure psi 125 160 125 160 217 125 160 217
Flow rate complete system at working pressure acfm 12 9 16 13 9 21 17 13
Max. positive pressure psi 125 160 125 160 217 125 160 217
Nominal motor output hp 3 4 5
Refrigerated dryerCT 4 CT 4 CT 8
Receiver volume gal. 56.8 56.8 56.8
Dimensions
W x D x H in
24 x 39 x 58 24 x 39 x 58 24 x 39 x 58
Compressed air connection¾ NPT ¾ NPT ¾ NPT
Sound pressure level dB(A) 69 70 70
Weight lb 628 628 639
ModelAirtower 3C Airtower 4C Airtower 5C
Working pressure psi 125 160 125 160 217 125 160 217
Flow rate complete system at working pressure acfm 12 9 16 13 9 21 17 13
Max. positive pressure psi 125 160 125 160 217 125 160 217
Nominal motor output hp 3 4 5
Refrigerated dryerCT 4 CT 4 CT 8
Receiver volume gal. 56.8 56.8 56.8
Dimensions
W x D x H in
24 x 39 x 58 24 x 39 x 58 24 x 39 x 58
Compressed air connection¾ NPT ¾ NPT ¾ NPT
Sound pressure level dB(A) 69 70 70
Weight lb 628 628 639

ModelAirtower 7.5C
Working pressure psi 125 160 217
Flow rate complete system at working pressure acfm 28 24 19
Max. positive pressure psi 125 160 217
Nominal motor output hp 7.5
Refrigerated dryerCT 8
Receiver volume gal. 56.8
Dimensions
W x D x H in
24 x 39 x 58
Compressed air connection¾ NPT
Sound pressure level dB(A) 70
Weight lb 661
ModelAirtower 7.5C
Working pressure psi 125 160 217
Flow rate complete system at working pressure acfm 28 24 19
Max. positive pressure psi 125 160 217
Nominal motor output hp 7.5
Refrigerated dryerCT 8
Receiver volume gal. 56.8
Dimensions
W x D x H in
24 x 39 x 58
Compressed air connection¾ NPT
Sound pressure level dB(A) 70
Weight lb 661

Add-on refrigerated dryer

ModelCT 4 CT 8
Power consumption0.3 0.5
Pressure dew point °F 37 37
RefrigerantR-513A R-513A
Global warming potential 631 631
Refrigerant volume lb 0.38 0.44
Refrigerant mass as CO2 equivalent t 0.1 0.1
Hermetic refrigeration circuit
ModelCT 4 CT 8
Power consumption0.3 0.5
Pressure dew point °F 37 37
RefrigerantR-513A R-513A
Global warming potential 631 631
Refrigerant volume lb 0.38 0.44
Refrigerant mass as CO2 equivalent t 0.1 0.1
Hermetic refrigeration circuit