Spark extinguishing system serve for recognizing and extinguishing sparks, which may occur during the wood processing through tool machines.

The encounter of machine tools and metal parts embedded in wood or grains of sand can lead to the creation of sparks. These get into the filtre device through the suction flow and may create dust explosions or fires. Not a few wood working businesses have been damaged through filtre and silo fires by spark flows. Spark extinguishing devices work with optical sensors in the suction pipelines which recognize the spark and alert the control. The control triggers the extinguishing process through the water nozzles lying behind the sensors.