Next, they screw nozzles onto the spray guns and adjust them to obtain the proper spray. Finally, spray machine operators hold or position the guns to direct the spray onto the product. While painting, operators adjust valves and check the flow of the coating. They also visually inspect the quality of the coating. If the product is put in drying ovens, operators adjust the temperature and air circulation.
Some operators are in charge of automatic painting machines.
Operators position the spray guns, set the nozzles, and make sure the guns fire while the item is moving through on the conveyor belt. During operation, operators attend the painting machine. This involves checking gauges and randomly checking the finished articles for quality. When necessary, operators touch up items. Automotive painters often have to mix paint to match the original color of the vehicle.