Pressurisation into switch rooms and dust-sensitive areas is only effective when clean air is supplied through efficient filtration systems.

The Answer: CPU II

Systems – CPU II

The CPU II Pressurisation Unit uses a unique cyclonic separator to remove up to 85% of incoming contaminants and will quickly eject 99% of larger particles remaining, (20 microns and above) before the air enters the filter chamber.


Clean Air Solutions’ current and previous projects are located in the extremely hostile environments caused by the Pindan dust conditions located in the North West Australian mining areas.


  • Dust Mitigation

    Pressurised clean air into switch rooms and dust-sensitive areas.

  • Effective Pressurisation

    All surfaces and joints are sealed to prevent any dust from bypassing the filtration.

  • Noise Reduction

    Affective application of noise reduction ducting to minimise noise.

  • CPU II Efficiency

    Removes up to 85% of incoming contaminants and 99% of particles 20 microns and larger.

  • Maintenance Access

    Easy electrical access for maintenance inspections, and multiple air discharge options.

  • Research and Development

    Extensive R&D; and innovation is conducted in our workshop and onsite.

  • Maintenance Simplicity

    Utilising readily available multiple high efficiency filters commonly used on mine sites.

  • Filter Access

    Rear access to filter change only requires 600mm x 600mm clearance.

  • Existing Equipment Changes

    Modifications and retrofitting to existing operations are easily accommodated.

  • Constant Pressure

    Variable Speed Controllable. Backward curved Blades to ensure lowest sound levels.

  • Intelligent Configuration

    Allows location into most tight corners and providing various discharge options.

  • Wall Mounted Options

    The BA 200 Wall mounted Unit, plus purpose built solutions.

Latest News

FarrQ2/Bushman/Impact machine retro fit option with CPU II.

FarrQ2/Bushman/Impact machine retrofit option with CPU II.

Replacement with Converted CPU II

 Impact 400 / Bushman 400 / FarrQ2

Clean Air Solutions has modified its current CPU II pressurisation unit for conversion and replacement of the Impact 400 / Bushman 400 / FarrQ2 units.

Maintaining control of production, reducing equipment failure and alleviating expensive maintenance procedures to mitigate dust emissions were the key principles applied to the development of the CPU II Pressurisation unit that offers a clean air flow without the need for frequent filter replacements.

Our CPUII which is a very reliable and efficient unit with only 2 moving parts makes for a great replacement. No more air compressors or solenoid valves.
The following modifications are completed at no cost to make installation on site quick and easy.

  • Convert top discharge to front discharge (if noise is an issue inside the room the top discharge should be retained)
  • Change 415 motor to 240 volt motor
  • Install local controls for fan speed (alternative control connection can be provide for accurate room pressure control)
  • Modify electrical drawings to suit.

The front face should have four holes drilled to bolt up to the existing damper for installation.

Trailing led fitted which is 2.5mm2

Unit performance is 435 litres per second when fitted with a large cyclone separator or 293 litres per second when fitted with a smaller cyclone separator. If you can provide the room dimensions we can select the correct cyclone separator during manufacture.

Led time is 3 weeks.

Cost $11,482.00 plus GST free issue Belmont warehouse.

Unit Dimensions.

Unit Length (mm) Width (mm) Height (mm) Air Flow L/s
Impact/Bushman/FarrQ2 1000 595 1150 <400
CPU II 995 595 1990 (max) 435

Clean Air Solutions – For Dust Sensitive Locations

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