AIR CONDITIONING EQUIPMENT MECHANIC
What you'd do
You will serve as a AIR CONDITIONING EQUIPMENT MECHANIC in the PUBLIC WORKS DEPARTMENT of NAVFAC ENGINEERING CMD MID-ATLANTIC.
Major duties
You will diagnose, locate, and repair malfunctions to the main operating mechanical components of large, complex heating, ventilation; air conditioning, and refrigeration systems (HVAC). You will test for refrigerant leaks and use a refrigerant recovery/recycling station, to Environmental Protection Agency standards to safely reclaim, recycle and store the refrigerant before repairs can be made. You will repair HVAC systems and components in structures such as, warehouses, hangars, hospitals, large office buildings and complexes. You will conduct visual and audible examination of equipment components by applying prescribed test procedures and equipment, and by exploration of probable reasons for equipment failure. You will use all trade tools and test equipment and instruments including, voltage, amperage, and ohm meters, electronic refrigerant leak detectors, micron vacuum analyzers and pumps, electronic temperature gauges, capacitor analyzers, etc.
What you need to qualify
Although a specific length of time and experience is not required for most trade and labor occupations, you must show through experience and training that you possess the quality level of knowledge and skill necessary to perform the duties of the position at the level for which you are applying. Qualification requirements emphasis is on quality of experience, not necessarily the length of time. Your qualifications will be evaluated on the basis of your level of knowledge, skills, abilities and/or competencies in the job elements and screen out listed below. This job has a screen-out element which will be used to determine minimum eligibility for this job. Applicants who do not receive a minimum of two points on the screen-out element(s) will be found ineligible. The Screen-out Element for this position is: 1) Understanding of principles and theories of air conditioning and refrigeration such as, the refrigeration cycle, heat transfer laws, the use of refrigerant tables; how to calculate airflow, and the pressure-temperature characteristics for the different systems to locate problem; 2) Understanding of correcting malfunctions and skill to make repairs to a variety of heating, ventilation, air conditioning, and refrigeration systems; 3) Understanding of refrigeration cycle of 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; 4) Understanding of HVAC systems components such as compressors which include 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. In addition, knowledge of systems which have a variety of complicated motor controls such as hermetically 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; 5) Understanding of power sources are used with various combinations or pulleys, belts, horse power capacity, and tensioners and the skill to conduct visual and audible examination of equipment components, by applying prescribed test procedures and equipment, and by exploration of probable reasons for equipment failure; 6) Understanding of the analog control systems or knowledge of the direct digital controls (DDC) for the automated control of HVAC systems; and 7) Understanding of DDC devices and software including programmable logic controllers, computers and peripherals which provide a centralized computer network-oriented approach. Applicants must meet the requirements of the Office of Personnel Management (OPM) Job Qualification Handbook for Trades and Labor Occupations. Additional qualification information can be found at: https://www.opm.gov/policy-data-oversight/classification-qualifications/federal-wage-system-qualifications/#url=List-of-Approved-Job-Elements Experience refers to paid and unpaid experience, including volunteer work done through National Service programs (e.g., professional, philanthropic, religious, spiritual, community, student, social). Volunteer work helps build critical competencies, knowledge, and skills and can provide valuable training and experience that translates directly to paid employment.
Before you apply
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