Agitation Devices

Agitation Devices:

Simply putting a section of duct under negative pressure is not sufficient to clean the duct. Agitation of the contaminants is required to loosen debris and send it into the airstream created by the negative-air machine.

There are three generally accepted agitation methods in use today.

1. Manual agitation by means of contact vacuuming requires physical access to all surfaces, which is gained by reaching through access openings or entering the duct system. Spin Door Access Duct Fan Brush

2. A variety of air nozzles, called "skipper nozzles," dislodge debris from the duct surfaces. A portable air compressor is required to use skipper nozzles. There can be doubts as to whether all surfaces were cleaned as skipper heads do not contact all of the internal duct.

3. A rotary brush cleaner consist of a brush or other cleaning head spinning on the end of a motor- driven shaft. Most of these devices use a flexible shaft to ease operation and to accommodate bends in the ducts themselves.

Most duct-cleaning jobs require the use of a combination of these agitation devices.

Proper cleaning procedures ensure that the operator and surrounding area are clean when the job is finished. Rotary Duct-Cleaning System uses a cleaning brush mounted to the tip of a flexible shaft. As the shaft rotates inside its casing, the operator feeds the rotating shaft assembly through the duct, loosening debris.