Equipment Usage Handles or uses machines, tools, or equipment requiring moderate instruction and experience such as large shop equipment and machines, firefighting apparatus, protective equipment, gang mowers, tractors, vehicles, police vehicles or light trucks, firearms, computers, peripherals, medical or dental equipment, software programs such as word processing, spreadsheets, or custom applications, switchboard; or may repair power tools and light equipment and office machines. 3 L Treats water by changing raw water flow, setting chemical pumps, checking chemical tanks, checking feed lines and pumps, lime systems and water filters, adjusting lime slakers, changing chlorine settings, checking pump settings, adjusting filter washes, closing or opening drains, and observing chemical mixings.