A professional who controls humidifier unit and auxiliary equipment to impart specified moisture content to pressed hardboard sheets or panels. Respnsibilities include:

• Starts hydraulic elevator to position humidifier car (wheeled buggy) at discharge end of press that forms hardboard and deposits formed sheets or panels in rack of car.
• Pushes loaded car to humidifier unit and starts hydraulic ram to transfer car to humidifier.
• Observes gauges, opens valves, and moves controls to regulate moisture, heat, and pressure in humidifier to impart specified moisture content to board.
• Starts elevator to lower car, automatically ejected from humidifier, to unload and transfer board for tempering.
• Inspects board for watermarks, scratches, and similar imperfections and rejects substandard units.
• Removes screens from forming press used to support wet pulp mats for pressing into hardboard.
• Examines screens for damage and marks faulty screens for repair or disposal.
• Records number of boards processed and rejected.
• Labels each lot of hardboard passing inspection to facilitate further processing.