A professional who tends vacuum drier system to dehydrate prebleached and preevaporated fruit in evaporating plant. Respnsibilities include:

• Loads fruit-filled trays onto drier shelves and closes and seals doors.
• Turns switches and dials to start heater and set temperature and timing for preheating system's circulating water.
• Turns switches and dials in prescribed sequence to activate timer, water pumps, and condenser and to put system on automatic cycle.
• Turns hand-valve to break vacuum at end of cycle, sets timer, and allows fruit to cool.
• Removes filled trays from drier and turns and pulls trays across bin-mounted scraper to remove dehydrated fruit.
• Listens for sounds that indicate malfunctions, and notifies supervisor of malfunctions that fail to respond to specified corrective actions.