A professional who tends filter plate press that removes impurities or moisture from slurries and chemical solution. Respnsibilities include:

• Covers filter plates with cloth, canvas, or paper.
• Opens valve to admit liquid ingredients into tank, dumps specified dry ingredients into tank, and starts agitator to mix ingredients and form slurry.
• Starts pump to transfer slurry from mixing tank to filter plate press.
• Opens pressure valves to force slurry through plates to remove impurities and moisture.
• Turns gear wheel to release tension of plates at completion of cycle.
• When filtering to obtain liquid product, dislodges solid material from plates and cleans frames, screens, and filters, using scraper, steam, or compressed airhose.
• When filtering to obtain solid product, cuts mixture from frames with knife and loads materials on drying trays.
• May draw samples for laboratory analysis.
• May be designated according to product filtered as Pigment Presser; Plate-and-Frame-Filter Operator; Resin Filterer (paint & varnish); Varnish Filterer (paint & varnish) II.