Kriwan announced it is celebrating the company’s founding four decades ago at the first edition of Chillventa (Hall 4, Stand 308). From day one, innovative technological development has been at the top of the agenda. Big names in the industry such as Bitzer, Danfoss, Emerson or Frascold have been using Kriwan products for decades.

"As the market leader and as a partner to our customers, we are thinking ahead to deliver the products and the support to make our customers successful in their markets," said Jens Peter Huischen, CEO of the Kriwan Group. A first compressor protection unit called INT69 was "born" in 1969. From then on the product portfolio has been expanded continuously. Research and development soon focused on the goal to change from passive to active compressor protection. With the INT69 E + Y compressor protection platform, the experts in Forchtenberg took a large step towards achieving this goal. At the Chillventa the latest milestones in compressor management are the INT275 – 278 family of level monitoring devices and the INT280 oil level regulator.

Kriwan's new oil level regulator complements the system solutions for efficient and reliable oil management in the refrigeration circuit. The functional principle of the INT280 for refrigeration compressors is optical-electronical. It consists of a mechanical part with a sight glass, a solenoid valve, a screw-in optical unit, and an electronic evaluation unit. The screw-in unit has a glass prism and is installed directly into the housing. The solenoid valve has an integrated electronic control that permits oil to be injected directly into the compressor crankcase from the collector or the oil separator, depending on the system.

Also, the Kriwan range of compressor protection devices continues to grow. According to the company’s press release, the latest addition are devices (69 Series) that are fully suitable for use with frequency converter equipment. Kriwan protection enables the monitoring of motor voltages for single-phasing or faulty rotary fields even for motors controlled by frequency converters, in the 20 – 100 Hz range. In the near future, the new generation of protective devices may be converted to enable direct monitoring for rotary field imbalance.

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