Printing Press Operator
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Tends knotters, rifflers, and centrifugal and flat screens that remove knots, sand, coarse fibers, and uncooked chips from cooked woodpulp: Starts machine and turns valves to adjust flow of pulp and water into screening machine at specified consistency, or sets automatic consistency regulator. Adjusts water sprays to wash pulp through screens and refuse into receiving chests. Examines and feels usable fibers and screened-out material to detect inefficient cleaning and loss of stock, and adjusts flow of pulp stock and water accordingly. Replaces defective screen plates, using handtools. Cleans screen plates and flow boxes with water hose. Washes and scrapes sand deposits from rifflers. May tend washers to wash cooking liquor from pulp [DECKER OPERATOR]. May be designated according to type of machine tended as Centrifugal-Screen Tender; Riffler Tender; Rod-Machine Operator.