A professional who tends machine that cleans and sterilizes containers, such as barrels, fruit juice bottles, milk cans, and baking pans. Respnsibilities include:

• Moves controls to fill washing and sterilizing tanks with water and steam, and to regulate temperature in cleaning tank.
• Dumps specified amounts of chemicals into cleaning tank.
• Loads containers on conveyor that carries containers through cleaning and sterilizing operations.
• Examines containers for cleanliness and defects, such as dents and cracks.
• Cleans and lubricates equipment.
• May manually clean containers prior to machine cleaning, using sponge or brush.
• May be designated according to type of container washed as Barrel Washer, Machine; Bottle Washer, Machine I; Can Washer, Machine.