A professional who tends machine that removes skins of fruits and vegetables and outer membrane of peeled citrus fruits. Respnsibilities include:

• Turns valves to admit steam to heat lye solution in tank and to regulate lye and water sprays.
• Starts conveyor to carry fruit or vegetables through machine.
• Observes and feels fruit or vegetable emerging from machine to determine if immersion time is sufficient to ensure removal of skin or membrane.
• May load conveyor by hand.
• May prepare lye solution by dumping lye chips into tank of heated water.
• May scald products to loosen skin or peel and be designated Scalder.