Screw Compressors OPEN

Screw Compressors OPEN

The OS series separates the flanged motor and refrigerant circuit. Thanks to the OSK/N version, these compressors are suitable for many application ranges and refrigerants, with a separate series for operation with ammonia. The internal capacity control is multistep and, from OS.85, stepless as an optional feature. All OS compressors are suitable for speed-controlled operation. From OS.95 with IQ MODULE.

NH₃ – OS.A95 SERIES

The OS.A95 series is the new open-drive BITZER screw compressor series for use in industrial ammonia applications. The series combines increased refrigerating capacity with proven reliability and outstanding energy efficiency in full and part load. The on-board IQ MODULE simplifies installation and service and increases the system uptime.

Applicable refrigerants Natural low-GWP refrigerant R717 (NH₃)

Capacity range 4 models: 700… 1,015 m³/h at 2,900 rpm

Certifications CE | EAC | DNVGL | UL (IQ MODULE)

NH₃ – OS.A53-85 SERIES

The OS.A series is the open-drive screw compressor series for use in industrial ammonia applications. The series combines a high refrigerating capacity with proven reliability and outstanding energy efficiency in full and part load.

Refrigerants Natural low-GWP refrigerant | R717 (NH₃)

Product range Three families: OS.A53, OS.A74 and OS.A85 | 11 sizes: 84 … 535 m³/h at 2,900 rpm

Certifications CE | EAC | DNV-GL

Standard Refrigerants OS.53-85 Series

The OS.53-85 series is the open-model screw compressor series for use with synthetic refrigerants. The series combines a high refrigerating capacity with proven reliability and outstanding energy efficiency in full and part load.

Refrigerants HFC, HFC blends, HCFC, non-flammable A1 | HFO blends, non-flammable A1

Product range Three families: OS.53, OS.74 and OS.85 | 12 sizes: 84 … 535 m³/h at 2,900 rpm

Certifications CE | EAC | DNV-GL

Hazardous Atmosphere OS.(A)74-EX SERIES

The OS.(A)74-EX open-drive screw compressor series is dedicated to operation in hazardous atmospheres zone 1 and zone 2. It is specially designed for installations in machines located in areas that are subject to the EU Explosion Protection Directive 2014/34/EU.

Refrigerants OS.A74-EX: Natural low-GWP refrigerant R717 (NH₃) | OS.74-EX: HFC, HFC blends, HCFC, non-flammable A1

Product range Four models: 165 … 250 m³/h at 2,900 rpm

Certifications EU Explosion Protection Directive 2014/34/EU