Description
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
- Wide range of 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
Applications
- Refrigerated MT and LT storage
- Blast chilling/freezing systems
- Process and A/C liquid chillers
- Ice production
Highlights
- Industry-leading energy efficiency in full and part load operation
- Easy parallel compounding for increased system capacity
- Highly flexible and easy to service by separation of refrigerant circuit and motor
- BITZER Global Service network for quick spare part availability all over the world
Capacity regulation
- Mechanical capacity control
- Easy control via flanged solenoid valves
- OS.53 to OS.74: Multistage capacity control (control pistons)
- OS.85: Dual capacity control (single slider) for stepwise or alternatively stepless capacity control and Vᵢ adaption
- Suitable for VSD operation
- OS.53: Speed range 1,450 … 4,500 rpm
- OS.74 and OS.85: Speed range 1,450 … 4,000 rpm
Product versions
- OSK: MT and A/C applications
- OSN: LT and MT applications
- OSKB: LT stage in booster systems
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