Full job description Duties Performs or assists in operations, repairs, maintenance and monitoring of a bank of multiple mechanically fire, gas and oil fueled water and fire tube boilers. Assists in the operation, repair, maintenance and monitoring of multiple banks of centrifugal and absorption chillers whose total capacity is 9,800 tons. Starts, stops and switches all heat-cooling and ventilating systems and their associated equipment in their proper sequence. Assists in testing and analyzing