“Cleaning of fires” means the adjusting of a combustion process to improve and optimize operation of the device. This includes the adjustment of the flame using visual and process information.

Source. #6505-A, eff 5-1-97; renumbered by #8256 (from Env-A 101.70), (see Revision Note #1 at chapter heading); renumbered by #8304 (see Revision Note #2 at chapter heading); renumbered by #9839 (from Env-A 101.44), see Revision Note #3 at chapter heading); ss by #13105, eff 9-25-20 (formerly Env-A 101.45) (see Revision Note #4 at chapter heading for Env-A 100)