A professional who tends machine that crushes grapes to form must (juice, pulp, and skins of grape) for use in making wine. Respnsibilities include:

• Starts machine and regulates rate of flow of grapes into crusher.
• Opens outlet valves to drain must into fermenting tanks.
• Starts refuse conveyor that removes stems from machine.
• Removes debris from crusher reservoir (sump) and outlets.
• Cleans and lubricates machine.