Issues may include the testing, replacement or repair electrical systems including three phase or single phase electrical systems up to 600volts, AC or DC motors, power supplies, frequency drives, servo drives, transformers, motor starters, proximity sensors, encoders, photo eyes, programmable logic controllers (PLC), HMI's, PLC Inputs/Outputs. connected to the MHE network or other networks such as Profibus, work with device IP addressing, network switches, along with operation and diagnosis of all chill water plant systems including chillers, cooling towers, boilers, pumps, BAS, HVAC, and water treatment.