Screw compressors with frequency converters Airpol KPR and Airpol PR are a solution that combines intelligent control system and energy efficiency of the system. They are designed and manufactured on the basis of innovative technological solutions and top quality materials. Energy efficiency is one of the most important factors that all companies are concerned with. The more efficient the air system, the lower the energy consumption and the lower the energy bill.

Airpol KPR and Airpol PR screw compressors adapt compressor performance to actual compressed air demand by changing rotational speed, while maintaining network pressure at a constant level. In most industrial plants, demand for compressed air varies over time, which is why the right choice of compressor is so important in order to reduce energy costs and ensure a stable source of compressed air.  Our experts will be happy to assist you in assessing your actual compressed air requirements, taking into account your duty cycle and the required compressed air quality for your application, and propose the most efficient and energy saving solution.

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Model Capacity [m3/h]
0,65 MPa
Capacity [m3/h]
0,8 MPa
Capacity [m3/h]
1,0 MPa
Capacity [m3/h]
1,3 MPa
Capacity [m3/h]
1,5 MPa
Dimensions (LxWxH) [mm] Air receiver volume [l] Nominal motor power [kW]
Airpol KPR 5 10 - 54 10 - 50 10 - 40 10 - 33 10 - 20 1920x660x1520 500 5,5
Airpol KPR 7 17 - 73 17 - 68 17 - 57 15 - 47 13 - 35 1920x660x1520 500 7,5
Airpol KPR 11 17 - 117 17 - 108 17 - 90 17 - 70 14 - 55 1920x660x1520 500 11
Airpol KPR 15 52 - 162 52 - 150 52 - 120 17 -96 17 - 85 1920x660x1600 500 15
Airpol KPR D15 (napęd bezpośredni) 52 - 162 52 - 150 52 - 120 - - 1920x700x1645 500 15
Airpol PR 5 10 - 54 10 - 50 10 - 40 10 - 33 10 - 20 940x660x1340 - 5,5
Airpol PR 7 17 - 73 17 - 68 17 - 57 15 - 47 13 - 35 940x660x1340 - 7,5
Airpol PR 11 17 - 117 17 - 108 17 - 90 17 - 70 14 - 55 940x660x1340 - 11
Airpol PR 15 52 - 162 52 - 150 52 - 120 17 - 96 17 - 85 1100x720x1430 - 15

Airpol KPR and Airpol PR screw compressors equipped with a frequency converter use variable speed drive technology. Our design office specialists have designed compressors with improved energy efficiency that ensure an efficient air system and at the same time reduce energy bills. A special drive used in Airpol KPR and Airpol PR screw compressors controls compressor speed, which results in:

  • smooth regulation of compressor speed within the range from 20% to 100%,
  • adjustment of compressor capacity to actual consumption of compressed air,
  • energy savings up to 70% in comparison to compressors with traditional control.
    When the demand for compressed air is low, the motor in a variable speed drive screw compressor will run at reduced speed. This will result in lower electricity consumption. The motor frequency of the variable speed compressor will automatically increase when the demand for compressed air increases. This adaptation of compressor operation has measurable benefits in the form of lower electricity costs and less wear on compressor components, which extends compressor service life and reduces maintenance costs.
  • constant network pressure at a preset value
    The frequency converter control system tries to maintain the compressor motor rotation speed so that there is a constant pressure in the compressed air system at a preset value. When the network pressure decreases the inverter increases the rotational speed of the electric motor, which increases the capacity of the compressor, whereas when the pressure increases the rotational speed of the motor decreases

High quality

A durable and reliable compressor is a perfect design, but also high quality materials and components. Airpol, using its extensive experience in compressor production gained over 60 years in the pneumatic industry, has developed solutions that combine the highest quality with low operating costs.

The applied ASU screw compression stage with optimised rotor profile, completely designed, manufactured and tested at Airpol, guarantees reliability and high compressor performance throughout its entire service life. Appropriately oversized bearings and low tolerance applied during the entire production process of screw compression stages ensure their durability and long service life. Inspection at every stage of the compressor production, the high quality components used ensure that the Airpol screw compressor is an investment for years.

Intelligent microprocessor controller AIRPOL POWER CONTROL MS 187 FRQ

The AIRPOL POWER CONTROL microprocessor controller designed specifically for use with Airpol KPR and Airpol PR screw compressors ensures efficient operation and safety of the entire system, as well as continuous monitoring of compressor operating parameters.  Extremely easy to use and intuitive, it offers a wide range of options: selection of operation modes, modification of various settings, observation of current compressor parameter values, status of operation time counters, energy consumption and many more.

Easy operation, low operating costs 

Maintenance and service components are optimally accessible, which reduces service downtime. The design of the compressor, including the hinged and removable door assembly, minimises the required working space.  Daily and service maintenance is simple and service intervals are extended to 3,000 operating hours or a year, reducing investment costs.


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