Sights through opening of pyrometer into furnace opening and turns sleeve dial on pyrometer until color of wire filament matches luminosity of flames. Reads dial indicator to obtain millivolt reading and compares reading with temperature chart to determine if temperature is in accordance with specifications. Interprets graph to determine need for temperature adjustment.
Turns valve to increase or decrease air and gas supply into burners.
Inserts hose of gas analyzer into furnace and starts suction pump to withdraw sample of burned atmosphere. Records tests, temperatures, and adjustments in log.