OS.A95 SERIES AND OS.A105 SERIES

IQ MODULE

OS.A95 SERIES AND OS.A105 SERIES

The OS.A95 series of open-drive screw compressors from BITZER is specially designed for industrial ammonia applications. The series combines strong refrigerating capacity with proven reliability and outstanding energy efficiency in full and part load. The integrated IQ MODULE simplifies installation and maintenance and increases the availability of the system.

The new OS.A105 expands the existing product line and delivers even better efficiency in full and part load. The hallmarks of the OS.A105 series are its higher refrigerating capacity, its versatility ranging from low-temperature applications to chilling and its optimised energy efficiency. BITZER is setting new standards in terms of performance and efficiency with the OS.A105 series.

Refrigerant

Natural refrigerant with no global warming potential
- R717 (NH3)

Product range

OS.A95: Four displacement levels from 700 .. 1015 m³/h at 2900 rpm
OS.A105: Three displacement levels from 1400 .. 2000 m³/h at 2900 rpm

Certifications

CE
EAC
UL (IQ MODULE)

Industry sectors

Food and beverages industry
Chemical and pharmaceutical industry
Leisure and sports industry
Marine and offshore industry

Applications

Refrigerated MT and LT storage
Blast chilling/freezing systems
Process and A/C liquid chillers
Ice production
Ice rinks

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Highlights

Industry-leading efficiency in full and part load operation
Outstanding wide application range
Easy parallel compounding for increased system capacity
Suitable for VSD operation
- Speed range 1,450 ... 4,000 rpm

Cutting-edge technology

On-board IQ MODULE
- Protection, monitoring, analysis, operation and communication
Double slider technology
- Stepless mechatronic capacity regulation: 100% ... 10%
- Automatic Vᵢ adaptation

Product versions

OSKA: Universal for MT, LT and A/C applications
OSNA: Increased efficiency in LT applications

Reduced life cycle costs

Very low operating costs due to outstanding high energy efficiency
Long lifetime due to high robustness and low-vibration design
Low maintenance costs due to service-friendly design
BITZER Global Service network for quick spare part availability all over the world

Operational safety and reliability

High compressor reliability
- Application limits monitoring
- Advanced oil management
All compressors are 100% factory-tested and pre-parameterised

Flexibility

Wide application range enables flexible use
- In a wide range of system configurations
- Mechatronic capacity control or variable-speed drive
Easy parallel operation of compressors due to internal discharge check valve

Compressor-related accessories

Wide range of suction and discharge bushings and discharge gas shut-off valves
Matching couplings and coupling housings
Adaptor and shut-off valve for economiser connection
OS.A105: external suction line gas filter

System-related accessories

Primary and secondary oil separators
- Oil separators for NH₃: OA..A series
- Combined oil separators for NH₃: OAC series; OAHC series
- Secondary oil separators for NH₃: OAS series
Oil coolers
- Water cooled oil coolers for NH₃: OW..A series
Liquid receivers:
- Horizontal liquid receivers for NH₃: F..A series

Efficient BITZER OS.A95 ammonia screw compressors: flexible and eco-friendly

Features
Highlights
- Industry-leading efficiency in full and part load operation
- Outstanding wide application range
- Easy parallel compounding for increased system capacity
- Suitable for VSD operation
  - Speed range 1,450 ... 4,000 rpm
Cutting-edge technology
- On-board IQ MODULE
  - Protection, monitoring, analysis, operation and communication
- Double slider technology
  - Stepless mechatronic capacity regulation: 100% ... 10%
  - Automatic Vᵢ adaptation
Product versions
- OSKA: Universal for MT, LT and A/C applications
- OSNA: Increased efficiency in LT applications
Benefits
Reduced life cycle costs
- Very low operating costs due to outstanding high energy efficiency
- Long lifetime due to high robustness and low-vibration design
- Low maintenance costs due to service-friendly design
- BITZER Global Service network for quick spare part availability all over the world
Operational safety and reliability
- High compressor reliability
  - Application limits monitoring
  - Advanced oil management
- All compressors are 100% factory-tested and pre-parameterised
Flexibility
- Wide application range enables flexible use
  - In a wide range of system configurations
  - Mechatronic capacity control or variable-speed drive
- Easy parallel operation of compressors due to internal discharge check valve
Accessories
Compressor-related accessories
- Wide range of suction and discharge bushings and discharge gas shut-off valves
- Matching couplings and coupling housings
- Adaptor and shut-off valve for economiser connection
- OS.A105: external suction line gas filter
System-related accessories
- Primary and secondary oil separators
  - Oil separators for NH₃: OA..A series
  - Combined oil separators for NH₃: OAC series; OAHC series
  - Secondary oil separators for NH₃: OAS series
- Oil coolers
  - Water cooled oil coolers for NH₃: OW..A series
- Liquid receivers:
  - Horizontal liquid receivers for NH₃: F..A series
Video

Efficient BITZER OS.A95 ammonia screw compressors: flexible and eco-friendly