| 96 / | HD | GAS SEPARATION: APPARATUS |
| 15 | DF | ELECTRIC FIELD SEPARATION APPARATUS (E.G., ELECTRICAL PRECIPITATOR, ELECTROSTATIC TYPE, ETC.) {17} |
| 28 | DF | .~ Electrode cleaner, apparatus part flusher, discharger, or wet collector (e.g., wet film electrode, etc.) {6} |
| 30 | DF | .~.~ With shutdown or voltage adjustment means interrelated with cleaning (e.g., cutting off flow of gaseous fluid mixture or electrical current, etc.) {1} |
| 31 | | .~.~.~ Sequential operation |