A professional who tends batch or continuous rotary driers that remove moisture from solid chemical materials. Respnsibilities include:

• Dumps or shovels materials into batch drier chamber, or starts feed conveyors of continuous drier.
• Starts drying chamber rotating.
• Admits steam or hot air to drying chamber until specified heat is attained, as indicated by temperature chart recorders and gauges.
• Opens vacuum valves to withdraw accumulated vapors where materials require drying at subatmospheric pressure.
• Stops rotation of drying chamber to dump dried materials, or starts discharge conveyor to empty contents of chamber and transfer dried product to storage, packaging, or further processing.
• May tend auxiliary equipment, such as condensers and vacuum pumps.
• Records operating data in equipment log, such as temperatures, pressures, drying time, and hourly production.
• May feel discharged materials for specified dryness.
• May submit samples to control laboratory for moisture analysis.
• May regulate drier temperature, and speed of conveyors and rotary chamber, according to knowledge of process and material being dried.