AMMONIA COMPRESSOR PACKS

AMMONIA COMPRESSOR PACKS

Whether for medium or low temperature applications, air conditioning or booster applications, BITZER Ammonia Compressor Packs (ACPs) are just as flexible as the requirements in industrial refrigeration are different. They are available with a wide variety of options and accessories. Always on board: the natural refrigerant ammonia (NH₃, R717).

Refrigerants

Ammonia (NH₃, R717)

Capacity range

Two series:
- ACP.85: compressor packs with two or three OS.A85 screw compressors
- ACP.95: compressor packs with one, two or three OS.A95 screw compressors

Applications

High temperature/AC
Medium temperature
Low temperature
Booster

Industry sectors

Dairy and process
Food and beverage
Cold storage
Deep freezing
Leisure
And many more

Submit request

Comprehensive standard equipment

Up to three BITZER OS.A 85 or OS.A95 open screw compressors
High efficiency motors
All pipework mounted and tested
All control wires pre-wired and tested
Fully assembled

OS.A screw compressors

VSD operation 25 .. 70 Hz at 1450 .. 4200 rpm
Slider regulation stepped 50/75/100% (OS.A85) or stepless 25 .. 100% (OS.A95)
Compressor oil filter integrated (OS.A85) or external (OS.A95)
Self-aligning coupling housing and direct-drive coupling
Automatic Vi adjustment (OS.A95 only)

IQ MODULE CM-SW

Monitors temperatures and pressures and protects compressors
Integrates the complete electronic compressor periphery
Controls compressor capacity

OAHC OIL SEPARATOR

BITZER PED horizontal coalescence oil separator
State-of-the-art 3-stage oil separation:
- 1st stage: centrifugal and gravity separation
- 2nd stage: demister separation
- 3rd stage: coalescence separation
Oil carry over rate 2 .. 7 ppm when using PAO oil
Three models: OAHC 650, 800, 1000

OIL COOLER

Shell and plate or shell and tube oil cooler
Design and efficiency optimised for ACP operation
Same design for both thermosiphon and brine cooling agents
Multi-pass fully welded design

Efficient

Parallel connection of several BITZER screw compressors
Intelligent capacity control
High efficiency in all operating conditions

Future-proof

Ammonia (NH3, R717) is characterised by outstanding thermodynamic properties and low environmental impact (GWP and ODP = 0)

Reliable

System safety thanks to up to three built-in compressors, sensors and other essential components within a single system

Customisable design

112 different ACP models
Tailoring to the individual application possible

Low life-cycle costs

Technical design ensuring minimum downtime and maintenance costs.

Easy start-up and maintenance

BITZER ACPs come fully assembled
Ready for operation in no time
Accessibility of all components

Infinitely variable capacity control

Large range of capacity control between 25 and 70 Hz thanks to BITZER VARIPACK frequency inverters

The latest screw technology for industrial refrigeration

High efficiency profile twin screws using advanced geometry and high rigidity
Automatic start unloading
Wide speed range with optional VFD: 1500 .. 4200 rpm

Economiser operation (optional)
High quality shaft seal
Internal pressure relief valve
Compressor-integrated discharge check valve

Extensive intelligent functions thanks to the IQ MODULE CM-SW link

OS.A95

One, two or three compressors in one ACP
Stepless slider regulation (25 ..100%)
- External compressor oil filter
Integrated double slider for mechanical capacity control
Automatic Vi adjustment

More information

OS.A85

Two or three compressors in one ACP
Stepped slider regulation (50/75/100%)
Internal compressor oil filter
Fixed Vi

More information

ACP controller

Regulates and protects the ACP by using permanent active application envelope surveillance
Compressor capacity control functions
Compressor and motor protection
VFD control and communication via Modbus
Digital input and output available for system communication
Highly serviceable

Features
Comprehensive standard equipment
- Up to three BITZER OS.A 85 or OS.A95 open screw compressors
- High efficiency motors
- All pipework mounted and tested
- All control wires pre-wired and tested
- Fully assembled
OS.A screw compressors
- VSD operation 25 .. 70 Hz at 1450 .. 4200 rpm
- Slider regulation stepped 50/75/100% (OS.A85) or stepless 25 .. 100% (OS.A95)
- Compressor oil filter integrated (OS.A85) or external (OS.A95)
- Self-aligning coupling housing and direct-drive coupling
- Automatic Vi adjustment (OS.A95 only)
IQ MODULE CM-SW
- Monitors temperatures and pressures and protects compressors
- Integrates the complete electronic compressor periphery
- Controls compressor capacity
OAHC OIL SEPARATOR
- BITZER PED horizontal coalescence oil separator
- State-of-the-art 3-stage oil separation:
  - 1st stage: centrifugal and gravity separation
  - 2nd stage: demister separation
  - 3rd stage: coalescence separation
- Oil carry over rate 2 .. 7 ppm when using PAO oil
- Three models: OAHC 650, 800, 1000
OIL COOLER
- Shell and plate or shell and tube oil cooler
- Design and efficiency optimised for ACP operation
- Same design for both thermosiphon and brine cooling agents
- Multi-pass fully welded design
Benefits
Efficient
- Parallel connection of several BITZER screw compressors
- Intelligent capacity control
- High efficiency in all operating conditions
Future-proof
- Ammonia (NH3, R717) is characterised by outstanding thermodynamic properties and low environmental impact (GWP and ODP = 0)
Reliable
- System safety thanks to up to three built-in compressors, sensors and other essential components within a single system
Customisable design
- 112 different ACP models
- Tailoring to the individual application possible
Low life-cycle costs
- Technical design ensuring minimum downtime and maintenance costs.
Easy start-up and maintenance
- BITZER ACPs come fully assembled
- Ready for operation in no time
- Accessibility of all components
Infinitely variable capacity control
- Large range of capacity control between 25 and 70 Hz thanks to BITZER VARIPACK frequency inverters
Screw compressors
The latest screw technology for industrial refrigeration
- High efficiency profile twin screws using advanced geometry and high rigidity
- Automatic start unloading
- Wide speed range with optional VFD: 1500 .. 4200 rpm
- Economiser operation (optional)
- High quality shaft seal
- Internal pressure relief valve
- Compressor-integrated discharge check valve
- Extensive intelligent functions thanks to the IQ MODULE CM-SW link
OS.A95
- One, two or three compressors in one ACP
- Stepless slider regulation (25 ..100%)
  - External compressor oil filter
- Integrated double slider for mechanical capacity control
- Automatic Vi adjustment
More information

OS.A85
- Two or three compressors in one ACP
- Stepped slider regulation (50/75/100%)
- Internal compressor oil filter
- Fixed Vi
More information
Accessories
ACP controller
- Regulates and protects the ACP by using permanent active application envelope surveillance
- Compressor capacity control functions
- Compressor and motor protection
- VFD control and communication via Modbus
- Digital input and output available for system communication
- Highly serviceable