Make sure automated machinery is programmed and running properly.
Tends equipment that converts liquid carbon dioxide into dry ice: Turns valves to transfer liquid carbon dioxide to batch tank for weighing, and to expansion chamber where snow is formed by sudden release of pressure. Pushes lever of press to lower hydraulic ram that compresses snow into cakes. Pushes cakes onto conveyor that carries them under power saws that cut cakes to specified size and transfers them onto scale. Weighs cakes on scale, records weight, and covers dry ice with paper. Lifts ice into insulated box. Tends booster pumps to fill cylinders with liquid carbon dioxide under pressure. May tend automated system that converts liquid carbon dioxide into dry ice.