The Engineers covered by this Agreement shall, if and when called upon, perform any or all of the following skilled and technical duties, but not necessarily limited to performing work under a work order or computerized maintenance management system (CMMS), operating or assisting in operating all heating, ventilation, and air conditioning equipment, engines, turbines, motors, combustion engines, pumps, air compressors, ice and refrigerating machines, air conditioning units, filters, dryers, fans, siphons, also automatic and power-oiling pumps and engines, as well as other such normal or evolved building systems as installed within the building(s), more specifically described as follows: Full Job Description: Operation, maintenance and repair of all boilers, heaters, pumps, valves, appurtenances, engines, generators, and lines used in the distribution of steam and heated or processed water. Operation, repair and maintenance of refrigerant compressors, condensers, evaporators, traps, transfer pumps, expansion valves, stop valves, and float valves, together with all refrigerant lines and devices used to control temperatures, and air conditioning systems in their entirety, including the use of approved recovery equipment and processes to comply with the law.