It is self-cleaning and is easily adjusted by means of a handle on one side of the machine.
In this the carbon blocks are cylindrical in form and specially treated to make them "self-cleaning."
The carbons are large and are separated by a special compound intended to assist the self-cleaning feature.
They are all subjected to maintenance cycles, clean sources of energy, self-cleaning mechanisms, diagnostic routines.
A city's soot kills elms, they say; only plane trees, self-scaling and self-cleaning, live and grow and survive.