The collector cell, or filter, of an electrostatic precipitator is designed for high efficiency removal grease and smoke particles from kitchen extraction systems. The grease and smoke would otherwise coat the duct surface requiring TR19 cleaning to prevent fire risk, or would escape outside causing a nuisance to neighbouring properties.
To maintain efficiency, the collector cells need to be cleaned. The filter cells are normally taken away from site and cleaned by soaking in water containing a non-caustic detergent, cleaned using a high pressure hose and left to dry before being QC tested ready for the next service visit.
The service clean and inspection of electrostatic precipitators is carried out by fully trained Plasma Clean Air service engineers. They arrive at site with a full set of clean ESP filter cells and use these to replace the dirty cells which are taken from site. During the service visit, the housing of the ESP is also thoroughly cleaned and electrically inspected to ensure the ESP continues to operate at maximum efficiency.