Kaeser Kompressoren SE

Space-saving, efficient compressed air production

No matter whether for a smaller business where space is at a premium, or a larger business requiring a decentralised compressed air supply, Kaeser’s compact "Aircenter" systems are the perfect choice for an efficient and environmentally-friendly source of quality compressed air. With a minimal footprint of approximately 1m², these energy saving systems are available for flow rates from 0.34 to 2.7 m³/min and also provide application-specific compressed air treatment and storage.

All "Aircenter" models are characterised by their exceptional efficiency and there are now new versions of the two largest models, the “Aircenter 22” (11 kW) and the “Aircenter 25” (15 kW). At the heart of these systems lies an optimised SK series rotary screw compressor from Kaeser. With a maximum flow rate of 2.7 m³/min the new SK models deliver up to 11 and 14 percent more compressed air, respectively, than their predecessors. This impressive performance boost has been achieved both through airend optimisation and the minimisation of internal pressure losses. In turn, these improvements have lead to a reduction in specific power of up to 5 percent. The use of premium efficiency IE3 electrical motors has also contributed to additional energy savings. A further important efficiency-enhancing component is the “Sigma Control 2” internal controller: equipped as standard and assuring maximum communication capability, this advanced system not only enables demand-oriented performance matching and dependable monitoring, but - through its numerous interfaces - also ensures even greater flexibility when it comes to connection to the energy-saving Sigma Air Manager 4.0 master control system. The compressed air system can therefore be seamlessly integrated into Industrie 4.0 environments since the necessary interfaces for connection to the Kaeser Sigma Network are provided as standard. The addition of an integrated RFID reader assures service continuity, increases security and significantly raises service quality.

Moreover, all models share logical and user-friendly design throughout. For example, the left enclosure panel can be removed in a few simple steps and allows excellent visibility of the system's intelligently laid out components. As one might expect, all service points are easy to access. With the sound-damping enclosure panels in place, the already low operational sound levels from these compressors are reduced to a super-quiet background hum. In addition, the enclosure features four inlet openings for separate airflow cooling of the compressor, the motor and the switching cabinet and for compressor intake air. Kaeser's unique cooling system is equipped with a patented premium-efficiency dual-flow fan with separate cooling air flows for the motor and compressor. This not only achieves optimum cooling performance, low compressed air discharge temperatures and minimal sound levels, but also promotes efficient air compression.

The space-saving combination of a compressor, a thermally shielded refrigeration dryer and an underslung 350-l air receiver provides dependable and efficient compressed air production, treatment and storage within a single unit. As you might expect from a leading compressed air system provider such as Kaeser, these versatile units can also be equipped with air filters as required. The “Aircenter 22” and “Aircenter 25” are also available with an integrated frequency converter (“Sigma Frequency Control” - SFC) for applications where speed control is an advantage.

The smaller “Aircenter” models are based on Kaeser’s SX or SM series rotary screw compressors. Equipped with a 200-l or a 270-l air receiver, these versions cover flow rates from 0.34 to 1.5 m³/min (at 8 bar) and ensure super-quiet, efficient performance. As with the two largest models, 11- and 15-bar versions are available for applications requiring larger volumes of compressed air. Furthermore, the “Aircenter 12” can also be equipped with variable speed control.

Users who require not just an efficient compressor, but an all-in-one, compact compressed air system need look no further than an “Aircenter” system from Kaeser. True to Kaeser’s “Plug and Work” maxim, every model is ready for immediate operation once connected to the electrical supply and compressed air distribution network.

Kaeser presents the powerful ASK series

Powerhouses of efficiency

Compact and refined, but with significantly more power than comparable products, Kaeser Kompressoren is proud to introduce its latest generation of high efficiency ASK series rotary screw compressors. These innovative compressors not only deliver more compressed air for less energy, but also impress with their user- and service-friendly design.

ASK rotary screw compressors are true leaders in their class when it comes to stationary compressed air applications. Thanks to further-refined Sigma Profile airends, an innovative cooling concept and high-efficiency IE3 motors, these cutting-edge air compressors perform up to 20 percent better than many comparable products on the market. ASK models are available for flow rates from 0.79 to 4.65 m³/min, and feature optional frequency control and / or an integrated dryer.

The integrated Sigma Control 2 controller provides efficient and intuitive control, whilst the energy-saving IE3 motor and radial fan (with its own dedicated motor) help keep energy costs to a minimum.

A further important efficiency-enhancing component is the “Sigma Control 2” controller: equipped as standard and assuring maximum communication capability, this advanced system not only enables demand-oriented performance matching and dependable monitoring, but - through its numerous interfaces - also ensures even greater flexibility when it comes to connection to the energy-saving Sigma Air Manager 4.0 master control system. The compressed air system can therefore be seamlessly integrated into Industrie 4.0 environments since the necessary interfaces for connection to the Kaeser Sigma Network are provided as standard. The addition of an integrated RFID reader assures service continuity, increases security and significantly raises service quality.

ASK models also impress with their logical, user-friendly design, which allows all maintenance parts to be conveniently accessed from one side for easy servicing. Moreover, when closed, the enclosure with its sound-dampening insulation ensures quiet and unobtrusive operation.

New dry-runners from Kaeser

The expanded dry-runner range

Kaeser is proud to introduce its latest range of dry-running rotary screw compressors, the "CSG-2" series. Available with drive powers ranging from 37 to 90 kW, these two-stage machines provide free air deliveries from 5.4 to 13.1 m³/min for pressures between 4 and 10 bar (g). Together with the existing DSG-2 and FSG-2 series, Kaeser‘s dry-runner range now covers free air deliveries ranges from 5.4 to 50.0 m³/min, and 3.2 to 50.8 m³/min for variable speed machines.

Ensuring ultra-efficient compressed air production at all times, ”CSG-2” systems are the ideal choice for applications where dry-compression is required. Users can choose between air- and water-cooled versions and also have the option of “SFC” variable speed control for applications with fluctuating air demand. 

At the heart of these versatile units lies a quality, two-stage compressor airend. The rotors are equipped with “Ultra Coat”, which is resistant to temperatures up to 300 °C. Because this cost-reducing coating is also highly abrasion-proof, its sealing and protection performance remains virtually unchanged even after years of operation. As a result, compressed air delivery also remains consistent. In other words, dry-running rotary screw compressors from Kaeser consume no more energy after years of use than when first commissioned in order to deliver their rated free air delivery. “Ultra Coat” therefore helps to keep total system costs to a minimum. Air-cooled systems designed for use in ambient temperatures up to 45 °C also provide further significant potential for additional long-term savings.

Dependability and efficiency in ”CSG-2” systems are enhanced by the new PC-based "Sigma Control 2" internal controller: A powerful combination of multiple control modes, a timer and base load sequencing provides additional energy savings. Moreover, a precision electronic pressure sensor keeps switching differential to a minimum thereby saving even more energy. The "Sigma Control 2" also offers added advantages: This advanced system provides greater flexibility through its numerous interfaces and innovative plug-in communication modules. Therefore, connection to energy-saving master control systems, computer networks and/or remote diagnostics and monitoring systems, such as Kaeser's Teleservice facility, couldn’t be easier. The large display located on the control panel also simplifies on-site communication with the system, whilst an SD card slot speeds up data-reading and update processes. Furthermore, the addition of an RFID reader ensures service continuity, increases security and significantly raises service quality. The “Sigma Control 2” is also responsible for compressor monitoring.

As you might expect from a leading compressed air systems provider such as Kaeser, all "CSG-2" compressors are powered by IE3 premium efficiency motors. Standard equipment also includes 'PT 100' sensors for measurement and monitoring of the motor winding temperature. This enables full use of the maximum motor switching frequency and minimises costly idling periods.

These advantages, coupled with numerous other technical refinements, ensure that every unit lives up to the Kaeser quality promise. For example, the use of stainless steel rotors in the second compression stage helps guarantee compressed air quality and significantly enhances service life. In addition, as air intake is regulated via a hydraulically operated inlet valve, there's no need for regular replacement of pneumatic diaphragms. This consequently reduces both service costs and downtime. Furthermore, the use of fibre-free pulse dampers keeps pressure loss to an absolute minimum, maintains consistent air quality and prevents contamination of the compressed air.

Last, but not least, the "CSG-2" series continues the Kaeser tradition of super-quiet performance. Using the very latest in computer-aided measurement technology, Kaeser's development engineers were able to precisely analyse all sound sources and ensure that these versatile systems operate with minimal sound levels.

Screw blowers

Quiet and efficient

The new DBS-series screw blowers promise big energy savings for wastewater treatment plants. With power ratings from 15 to 37 kW and flow rates from 4 to 22.5 m³/min, they are currently the most efficient screw blowers available.

Like their big brothers, the EBS and FBS, the new Kaeser DBS screw blowers deliver unparalleled efficiency. They are up to 35-percent more efficient than conventional rotary blowers and also provide energy savings in the double digit range compared with many commonly available screw and turbo blowers.

These benefits are made possible in no small part by the proven Sigma Profle rotor technology used in the rotary screw compressor sector. Another key factor is the innovative non-slip direct drive with speed transmission integrated into the airend, which delivers maximum speed with minimal transmission losses. The result: lower energy costs.

 These screw blowers are especially well suited to municipal and industrial water treatment applications. Two different versions are available to meet the needs of water treatment plants requiring pressures of 400 or 650 mbar. The new blowers are exceptionally quiet, with sound levels in primary applications not exceeding 72 dB, which is equivalent to a modern vacuum cleaner.

The low energy consumption of Kaeser screw blowers makes them the perfect choice for supplying compressed air to water treatment plants. They are designed for use over long duty cycles, including continuous operation, require little maintenance, and can be installed side by side. Upon request they can be delivered with an integrated frequency converter or a star-delta starter. The screw blowers are delivered as turnkey systems (including power electronics and the Sigma Control 2 controller) that are ready for commissioning straight “out of the box”.

Intelligent control

Also integrated into the DBS blowers is the Sigma Control 2 system controller, which provides extensive monitoring functionality and makes it easy to connect each individual piece of equipment to communications networks. Going forward, this integrated controller will also make it possible to integrate the blowers into a Sigma Network, if desired. This is now possible since the Sigma Air Manager 4.0 (SAM 4.0) master controller – so well-proven in the compressor segment – is now also available for blower systems.