AIR CONDITIONING AND REFRIGERATION MECHANIC DEFINITION Under direction, perform skilled mechanical maintenance work in the installation, alteration, maintenance, and repair of District air conditioning systems, refrigeration equipment, and related equipment; and perform related duties as required. TYPICAL DUTIES · Install new air conditioning and refrigeration equipment with associated pneumatic or electrical control systems; · Repair or replace defective parts in units, equipment, and control systems, including compressors, condensers, evaporators, water cooling towers, motors, air handling units, air compressors, and HVAC units; · Calibrate and repair controls, including thermostats, sub-master units, pressure controls, and gauges; · Conduct regular and scheduled preventive maintenance inspections of air conditioning and refrigeration systems and units; lubricate, test and service4 motors, compressors, pumps, fans, controls, and other equipment; adjust and replace belts and filters; · Make electrical connections and disconnections related to air conditioning and refrigeration equipment; · Perform pipe fitting, brazing, and soldering; · Requisition materials and supplies; and · Provide work direction to others as assigned. KNOWLEDGE AND ABILITIES · Knowledge of the methods, materials, and equipment used in the air conditioning and refrigeration trade; · Knowledge of the operation of various types of air conditioning systems; · Knowledge of the operation of various types of control systems; · Ability to interpret and work from schematics, drawings, and blue prints; · Ability to diagnose defects; install, repair, overhaul, and maintain air conditioning and refrigeration systems, and related equipment; · Ability to use and care for mechanical tools and test equipment; · Ability to perform shop mathematics · Ability to maintain written records; · Ability to follow verbal and written instructions; · Ability to communicate effectively; · Ability to lift; and · Ability to establish and maintain effective working relationships with others. MINIMUM QUALIFICATIONS Any combination equivalent to: · Graduation from High School. · Four years of experience in structural maintenance and repair of buildings and related facilities. LICENSE/CERTIFICATE REQUIRED · Possession of a valid State of California Class C Driver’s License · Possession of E.P.A. Refrigerant Certificate