A professional who tends rotary vacuum and drum or leaf pressure filters that purify liquid sugars. Respnsibilities include:

• Turns valves to control flow of materials through filters during semiautomatic or manual operation of equipment, as instructed.
• Observes liquid sugar flowing through filters to detect cloudiness and turns valves to regulate flow, recirculate filtrate, or bypass filter for cleaning.
• Moves levers to raise filter covers and cleans filter, using hot water hose.