Controls equipment to melt, cook, and mix ingredients, such as gums, oils, turpentine, and naphtha, for use in manufacture of varnishes: Weighs gum and dumps it into gum pot or agitator tank over burner.
Pours in oil, as gum becomes liquid, and adjusts burner controls to regulate heat. Controls burners to cook mixture for specified time. Starts pump to transfer varnish base and thinner into reducing tank. Starts agitator to mix base and thinner for specified time. Fills test tube with varnish and compares viscosity with standard sample, or delivers test tube to laboratory for test. Pumps varnish through filter press to remove sediment from varnish.
