Modu-Kleen™ Downdraft Dust Collector Series 681, 694, 695, 696

Modu-Kleen™ Downdraft Dust Collector
Series 681, 694, 695, 696

Improved performance

The Modu-Kleen downdraft dust collector represents the latest dust collector technology developed by Dynamic Air to contain fugitive dust. This design obsoletes the conventional approach to automatic self-cleaning dust collectors. The advantages are significant with regard to performance, efficiency, filter access, energy, noise, maintenance and space requirements.

Higher material-to-air ratios

With a conventional dust collector, dust-laden air enters from the bottom of the housing and flows upward to the filters while collected particles are trying to fall into the lower collection hopper. However, with the Dynamic Air downdraft dust collector, air enters at the top of the dust collector housing and flows downward to the cartridge filters, pushing collected particulate into the collection hopper. This not only improves the filtering process itself, but also improves the material-to-air ratio. Another advantage of the downdraft design is that submicron particles, which would normally tend to stay in suspension, are now forced downward much more quickly by the incoming and downward flow of air, thus improving overall filtering efficiency and performance.

Reduces filter load, extends filter life

Since the airflow is directed downward towards the filter cartridges, the cleaning process of the Modu-Kleen downdraft dust collector is much improved over a conventional dust collector. This reduces the load on every filter cartridge and extends filter life considerably. Also, recirculation of collected particulate into the incoming air flow is greatly minimized, if not eliminated, because the air and material are both flowing in the same direction. Another benefit of the downdraft dust collector is that it usually takes up less floor space than a conventional dust collector, making it much more flexible with regard to space and plant layout.

Simple and safe filter removal

Dynamic Air's basic downdraft dust collector is designed with the cartridge filters positioned horizontally, making filter removal much easier. Personnel never have to enter the filter housing for general maintenance or for cartridge filter removal. This provides a much safer, quicker method of filter removal. For fast and easy inspections, a large, quick-opening door allows maintenance personnel to closely inspect each cartridge when required. In addition, any single cartridge can be removed without disturbing adjacent cartridges. Also, each cartridge filter has a unique built-in quarter turn bayonet mount, so no tools of any kind are required for cartridge removal.


  • Lower noise level
  • Heavy-duty door seals
  • Bayonet filter mounting
  • Reduced space requirements
  • Access door to clean air plenum
  • Variety of styles available


  • Aluminum construction
  • Hopper discharge valves
  • Vibra-Jet™ bin aerators
  • Cartridge media

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