Works on flooded and dry evaporators: water cooled, air cooled, and evaporative condensers and accessories as receivers, accumulators, oil traps, oil receivers, heat exchangers, suction pressure regulators, dryers, dehydrators, and strainers. Analyses and isolates complex system controls and malfunctions by utilizing pressure gauges, recorders, thermostats, multimeters, pyrometers, hygrothermograph, voltmeters, anemometers, manometers, tachometers, flow hood system, ammeter, and other specialized equipment.