Some of your duties may include maintaining, testing, and repairing electric motors; inspecting and repairing electrical equipment; inspecting and repairing electric instruments, replacing worn gaskets and sealing in watertight electrical equipment; and maintaining and repairing gasoline engine systems, air conditioner electrical systems, and portable heater fuel/electrical systems. • Inspect and repair air conditioner electrical systems, air conditioner vapor systems, refrigeration unit electrical systems, portable heater fuel/electrical systems, fire extinguisher recharging systems and fire extinguishers/valves.