Position deflector bars, gates, chutes, or spouts to divert flow of materials from one conveyor onto another conveyor. Weigh or measure materials and products, using scales or other measuring instruments, or read scales on conveyors that continually weigh products, in order to verify specified tonnages and prevent overloads. Manipulate controls, levers, and valves to start pumps, auxiliary equipment, or conveyors, and to adjust equipment positions, speeds, timing, and material flows. Record production data such as weights, types, quantities, and storage locations of materials, as well as equipment performance problems and downtime. Inform supervisors of equipment malfunctions that need to be addressed. Clean, sterilize, and maintain equipment, machinery, and work stations, using hand tools, shovels, brooms, chemicals, hoses, and lubricants. Observe conveyor operations and monitor lights, dials, and gauges, in order to maintain specified operating levels and to detect equipment malfunctions. Operate elevator systems in conjunction with conveyor systems. Read production and delivery schedules, and confer with supervisors, to determine sorting and transfer procedures, arrangement of packages on pallets, and destinations of loaded pallets. Repair or replace equipment components or parts such as blades, rolls, and pumps. Contact workers in work stations or other departments to request movement of materials, products, or machinery, or to notify them of incoming shipments and their estimated delivery times. Stop equipment or machinery and clear jams, using poles, bars, and hand tools, or remove damaged materials from conveyors.