Troubleshoot, adjust, and replace AC and DC electrical equipment, including batteries, control stations, fuses, motor starters, relays, switches, timers, servo-driven equipment, photoelectric devices, transducers, Variable Frequency Drives (VFDs), and encoders. Inspect, troubleshoot, repair, and replace mechanical components such as motors, reducers, drive chains, sprockets, sheaves, pulleys, rollers, conveyor belts, bearings, and transfer plates.