Controls evaporating equipment to concentrate suspensions solutions to specified degree in vacuum tanks or pans.
Pumps liquid into evaporator tank or vacuum pan.
Moves switches to start vacuum pumps maintain specified pressure.
Turns valves to admit steam into evaporator chest, coils, tubes, or jackets regulate steam input to maintain specified temperature.
Tests concentration of evaporated solution, using refractometer hydrometer, and also adjusts feeds, temperatures, and also pressure accordingly.
Pumps concentrated liquid to storage.
May tend auxiliary equipment, like settling tanks, preheating tanks, condensers, and also cooling equipment.
May supervise workers weighing mixing batches to predetermined formulas.
May pump batch through sterilizer.
May control chiller to reduce temperature of fresh citrus juice.
May be designated according to material evaporated as Evaporator Operator, Molasses (can. as well as preserv.); Tomato-Paste Maker (can. preserv.)..