HVAC Mechanic
Job Description Job Description CHENEGA MISSION OPERATIONS, LLC Huntsville, AL The Heating, Ventilation & Air-Conditioning Mechanic maintains, and repairs refrigeration, air conditioning, and water cooling equipment, boilers, HVAC, and associated physical plant equipment. The Heating, Ventilation & Air-Conditioning Mechanic inspects, repairs, replaces, and performs maintenance on HVAC systems to ensure they remain in a fully operational condition. Installs services and repairs environmental-control systems in office buildings and other commercial establishments, utilizing knowledge of refrigeration theory, pipefitting, and structural layout. Responsibilities Provide all maintenance and repair of all heating, ventilating, air conditioning systems, and related energy management systems. Operate, maintain, and repair air compressors, together with distribution lines and all valves and devices for air control. Operate, maintain, and repair pumps, handling brines, or other secondary refrigerating liquids, together with all valves, appurtenances, and lines used in the system. Maintain proper operation during seasonal changes and recalibrate controls based on seasonal conditions to ensure energy-efficient operation. Operate, maintain, and repair heating systems, and boiler control systems to meet manufacturer's specifications. Diagnose repair needs and perform corrective measures to include mechanical, plumbing, and electrical functions. Maintain records for equipment and daily logs. Perform preventive maintenance, diagnosis, and repair on conventional air conditioning systems, freezers, refrigeration, and associated physical plant equipment. Maintain, repair, and replace thermostatic expansion and pressure-limited devices and valves, motors, compressors, starters, thermostats, piping, coils boiler burners, and other assorted HVAC system controls and components. Trace electrical circuits, installs and repairs time clocks and regulatory controls, and makes minor repairs to electrical circuit breakers and motor controls. Perform related work assigned or required, such as balancing capacities and loads of refrigeration and air conditioning equipment; laying out and/or making estimates for repairs and new installations; ordering parts and equipment. Maintain building temperature during occupied hours to comply with ASHRAE Standard 55-2013, Thermal Environmental Conditions for Human Occupancy. Adjust cooling, heating, reheating, preheating, and humidity to control environmental conditions required by the equipment served by these systems. Maintain, diagnose, test, overhaul, install, and repair a variety of refrigeration, dehumidification, AC, ventilation, and heating systems. Mount compressor and condenser units on platform or floor, using hand tools, following blueprints or engineering specifications. Fabricate, assemble, and install ductwork and chassis parts, using portable metalworking tools and welding equipment. Replace filters, belts, and adjusts temperatures for environmental control. Install evaporator unit in chassis or in air duct system, using hand tools. Cut and bend tubing to correct length and shape, using cutting and bending equipment and tools. Cut and thread pipe, using machine or hand threading equipment. Join tubing or pipes to various refrigerating units by means of sleeves, couplings or unions, and solders joints, using torch, forming complete circuit for refrigerant. Install expansion and discharge valves in circuit. Connect motors, compressors, temperature / humidity controls, and circulating ventilation fans to control panels and connect control panels to power source. Install air and water filters in completed installations. Test joints and connections for gas leaks, using leak testers and soap solution. Wrap pipes in insulation and secures them in place. Replace defective breaker controls, thermostats, switches, fuses and electrical wiring to repair installed units, using electrician’s hand tools and test equipment. Observe pressure and vacuum gauges and adjust controls to ensure proper operation. Wear and use all required personal protective equipment (PPE), such as safety glasses, safety shoes, ear plugs, hardhat, etc. Ensure work orders when complete are properly filled out and returned to work management. Support the project Safety Plan through personal involvement in all aspects of safety, including training and attention to the adherence to safety requirements pertaining to particular trades or skills. Other duties as assigned Qualifications High School Diploma or GED equivalent, Possess a valid U.S. Driver’s license. Be deemed insurable under company policy. Successfully pass background and drug screening Preferred Qualifications Minimum three (3) years of direct experience maintaining commercial and/or industrial refrigeration and HVAC equipment in a military or civilian workforce, preferred. Knowledge, Skills and Abilities Possess good organization and communication skills, as well as maturity. Ability to deal with all levels of people, both inside and outside the company. Knowledge of various types of air conditioning equipment (split systems, wall a/c units, vav systems, etc.) Skilled with pressure gauges, scales, recovery equipment, torch sets, brazing equipment, and materials Ability to read, write, speak, and understand English. Physical Demands : (The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.) Sufficient fine motor skill for use of computers, calculator with an ability to withstand repetitive keyboarding for extended periods of time Visual, auditory and communication abilities sufficient to perform the essential functions of the job Ability to kneel bend and twist at the waist on an occasional basis, Ability to push, pull, carry and lift objects weighing up to 25 pounds on a regular basis and more on an occasional basis Ability to travel by plane and safely operate a motor vehicle.
