Air Conditioning Equipment Mechanic

This position serves as an Air Conditioning Equipment Mechanic in the ECC/Pipe Shop under the supervision of the ECC Pipe Shop Maintenance Supervisor, with second level direction provided by the Maintenance Control Manager. Major Duties Duties include: Incumbents work involves installing, recognizing the cause of faulty equipment and making repairs on large systems that provide for a variety of air conditioning functions such as heating, cooling, humidifying, dehumidifying, cleaning, filtering, and circulating. Installs and repairs are used to condition the air for different kinds of structures such as warehouses, ships, hangars, hospitals, submarines, and large office buildings. Incumbent works on a variety of commercial and industrial systems to locate and check elements such as those which control low side and high side pressure; the temperature of the cooling units; the temperatures of the liquid and suction lines; and the running time of the various mechanisms. Incumbent checks for the probability of leaks by visual and audible examination of equipment components; by applying prescribed test procedures and equipment; and by exploration of probable reasons for equipment failure. Incumbent uses principles and theories of air conditioning and refrigeration such as the refrigeration cycle, heat transfer Jaws, the use of refrigerant tables; how to calculate airflow, and the pressure-temperature characteristics for the different systems in order to troubleshoot, locate and repair faulty equipment swiftly and to reduce inoperative time to a minimum. The incumbent works on a variety of compressors such as gear, reciprocating, centrifugal, or rotary pump, and a variety of refrigerant controls such as those with low and high pressure side floats, automatic thermostatic expansion valves, capillary or choke types, and those based on volume or quantity changes. A variety of complicated motor controls are also used such as hennetically sealed motors and pressure controls, thermostatic motor controls (remote and double remote), full and semi-automatic defrosting controls, relays, and other controls to protect against overload or overheating. Various types of power sources are used with various combinations or pulleys, belts, horsepower capacity, and tensioners. Incumbents dismantle repairs and reassemble units such as pumps, impellers, compressors, chillers, receivers and evaporators. Incumbent installs and fits connecting rods, crank shafts, piston rings, bearings, and bushings; overhauling valves by adjusting or replacing g #J-18808-Ljbffr