Maintaining and adjusting heat, lighting, air conditioning, power refrigeration, water treatment, and ventilation equipment of a building or building.

May maintain boiler system, repair and maintain integrated control panels and equipment, inspect, maintain, and make emergency repairs to low-pressure steam boilers and to water, air, refrigeration, and oil lines throughout a building.

May clean tubes, test valves, gauges, and other equipment, install replacement parts or minor addition to or make modifications to existing equipment.

May keep charts, makes oral and written reports, does preventive maintenance throughout a building on various mechanical equipment and to the building itself.

Operates boilers, compressors, refrigeration equipment, generators, air-conditioning equipment, and all appurtenant equipment driven by steam, air, diesel, gas, water, or any other power developing energy.

Patrols and controls all mechanical equipment to the...