KAESER complete system type: AIRCENTER SK 25 (lgk.)
with the globally recognized SIGMA PROFILE
The AIRCENTER SK 25 offers more than the possibility of efficiently generating, processing and storing compressed air on a minimal footprint: future-oriented technology with high user benefits in a modern design, the "plug & work" principle in a new definition. All system components - screw compressor, refrigeration dryer and compressed air tank built underneath - are enclosed in a housing and also visually form a harmonious whole. During the conception, the focus was on energy efficiency, ease of maintenance, longevity and optimal coordination of all components.
Technical data (performance parameters at 8.0 bar operating pressure, based on the entire system, including fan. According to ISO 1217:2009 Annex C.)
- Flow rate at 8.0 bar (g) 2.50 m³/min
- Electrical power consumption of the entire system at 8.0 bar(g) 17.7kW
- specific performance 7.09 kW/(m³/min)
- Max overpressure 8.00 bars
- Drive motor efficiency at full load 91.9%
- Efficiency class drive motor IE3
- Rated power drive motor 15.0kW
- speed drive motor 2960 rpm
- Degree of protection drive motor IP55
- Connected to the electricity grid 400V / 3 / 50Hz
- sound pressure level 67dB(A)
- Max. usable amount of warm air 3000 m³/h
- Capacity cooling oil 7.0L
- Cooling oil type compressor SIGMA FLUID MOL
- Pressure loss refrigeration dryer 0.18 bars
- Pressure dew point at ambient temperature +20°C, rel. humidity 30% 3°C
- refrigerant R-513A
- Volume of compressed air tank 350L
- Compressed air connection g 1
- Refrigerant / refrigerant charge R-513A / 0.52kg
- Global warming potential GWP / CO2 equivalent 631 / 0.33t
- Dimensions (W x D x H) 750mm x 1335mm x 1880mm
- Dimensions 587kg
Technical changes reserved.
possible options
- Connection to control technology not provided
- equipped with heat recovery No
- filter No
- Screwable machine feet No
- partial load control No
- Cooling oil type compressor SIGMA FLUID MOL
Product information, images and further details can be found in the brochure http://www.kaeser.de/en/products/screw-type compressors/screw-type compressors-with-fluid-cooling/with-belt-drive/
Planning note:
Please note that additional compressed air treatment components may be required for your project planning. Compressed air always contains a certain amount of solids/dust, moisture and a residual oil content (hydrocarbons in aerosol/vapor form). Depending on the application, a certain degree of preparation is required (see ISO 8573). We would be happy to advise you on this.
Type: AIRCENTER SK 25 Decisive product advantages AIRCENTER
KAESER compressor block with energy-saving SIGMA PROFILE
Every KAESER rotary screw airend has rotors with the energy-saving SIGMA PROFILE. Careful manufacture and adjusted precision roller bearings ensure a long service life and high reliability. Single-stage compression with cooling fluid injection for optimal cooling, lubrication and sealing of the rotors.
Dual flow fan cooling system
The cooling system works with a new type of double-flow fan (patent pending). Its shape ensures high effectiveness and reduces noise. The separate routing of the air to be compressed and the incoming cooling air for the air/fluid cooler and engine provides reserves even at high ambient temperatures of up to 45 °C. The intake of the engine cooling air and the air to be compressed directly from the environment ensures highly effective engine cooling and increases the efficiency of the compression. The cooling air flow, which works at low flow speeds, minimizes noise development.
Energy saving
Over 70 percent of compressed air costs are energy costs. Even with small systems, this has a noticeable effect. That's why KAESER makes sure that its compressors are as energy efficient as possible, using state-of-the-art technology. As part of an appropriately planned overall system, they form the basis for a reliable and cost-effective compressed air supply.
Maintenance friendly
All maintenance work can be carried out from one side. The left housing cover can be removed for this purpose, all maintenance points are easy to reach. The fluid level can be checked through the viewing window without even opening the hood. They also have an operating opening for the test button on the electronic condensate drain of the refrigeration dryer.
Type: AIRCENTER SK 25 Decisive product advantages AIRCENTER
Energy saving control of the attached dryer
In order to reduce the unnecessary energy consumption of the refrigeration dryer when the compressor is at a standstill, an energy-saving control for the attached drier is used, which switches off the refrigeration dryer in cycles.
Electronic level-controlled condensate drain ECO-DRAIN
The refrigeration dryer itself is equipped with an ECO-DRAIN condensate drain, which prevents compressed air loss through condensate drainage. If the collection tank of the trap is full, a diaphragm valve is opened via a level sensor and the condensate runs off. The electronics ensure compliance with the maximum required valve opening time, which is necessary to completely drain the separated condensate and still prevent any compressed air losses. Function monitoring by SIGMA CONTROL 2.
Space-saving modular design
The refrigeration dryer is installed in a separate housing. This protects it from the radiated heat of the compressor and increases its operational reliability. All components are easily accessible. This simplifies and speeds up all maintenance work.
High quality heat exchanger
The generously dimensioned and dirt-proof heat exchanger system is equipped with an energy-saving air-to-air heat exchanger and air-to-refrigerant heat exchanger. The integrated, specially adapted condensate separator ensures optimal separation.
Type: AIRCENTER SK 25 compressor control SIGMA CONTROL 2
The command center
The operating unit, manufactured according to industry standards, is equipped with a clear display and robust buttons. All relevant information can be seen at a glance. The clear menu structure in connection with 30 selectable languages underlines the simple operation.
Security with RFID
SIGMA CONTROL 2 offers high security thanks to the integrated RFID functionality (Radio Frequency Identification, identification of radio waves). It allows users and/or KAESER service technicians to log in securely and, in terms of operator liability, offers a guarantee that no unauthorized person will operate the system or manipulate its settings.
communication
SIGMA CONTROL 2 communicates internally with the compressor via inputs and outputs. Integration into the SIGMA NETWORK is possible thanks to the standard Ethernet interface. Connection to a network enables remote monitoring. The built-in web server can be used to display the control panel, the menu structure, operating parameters and the message history.
Update and save
Software updates and operating parameters can be installed or transferred quickly and easily via the SD card slot. This saves service costs. In addition, the SD card can be used for (long-term) storage of important operating data.
"Prepared connection to control system" option
Optional (pluggable) bus communication modules (Profibus DP, Modbus TCP, Profinet, Devicenet) enable external communication with building and control technology systems for remote control and remote monitoring of the compressor. Digital and analog inputs that can be assigned via the operating unit as well as digital outputs enable the integration of external sensors and actuators.
Type: AIRCENTER SK 25 Equipment SIGMA CONTROL 2
control systems
- Modular system with control unit and integrated inputs and outputs, power pack and web server; Designed for use in KAESER SX - ASK series screw compressors.
- Light-emitting diodes (LED) in traffic light colors to display the operating status
- fully automatic monitoring and control; Dual, quadro and vario control.
- Timer for compressor functions (on, off) or external outputs
- Base load change function when operating two compressors
- Web server and operating data remote display; Plain text display, 30 languages selectable
Hardware
- Powerful processor hardware; all parts and components designed for industrial conditions
- Graphic display, LED displays and raised membrane keys; battery-buffered real-time clock,
- Accurate electronic pressure transmitter
switch cabinet
- Dust and splash-proof, IP 54
- Input/output modules with non-interchangeably coded sockets for the signal transmitter connection cable ¹)
- Terminal strip for additional potential-free contacts ¹)
interfaces
- SD card slot for updates
- Adapter for communication modules ¹)
- USS bus for frequency converters, RFID (Radio Frequency Identification) reader, Ethernet
Approvals and Certifications
- CE, cUlus, EMC; Ship certifications GL, ABS, LRS, DNV (only available if the option "connection to control system prepared" is selected)
Note on ¹): only available if the "Prepared connection to control system" option is selected
