HVAC Mechanic

Chenega Corporation•Huntsville, AL

21d

About The Position

The Heating, Ventilation & Air-Conditioning Mechanic maintains and repairs refrigeration, air conditioning, water-cooling equipment, boilers, HVAC systems, and associated physical plant equipment. The mechanic inspects, repairs, replaces, and maintains HVAC systems to keep them fully operational and installs, services, and repairs environmental-control systems in office buildings and other commercial establishments, using knowledge of refrigeration theory, pipefitting, and structural layout.

Requirements

High school diploma or GED equivalent.
Valid U.S. driver’s license.
Be deemed insurable under company policy.
Successfully pass background and drug screening.
Good organization and communication skills, as well as maturity.
Ability to deal with people at all levels, both inside and outside the company.
Knowledge of various types of air-conditioning equipment, including split systems, wall air-conditioning units, and VAV systems.
Ability to use pressure gauges, scales, recovery equipment, torch sets, brazing equipment, and materials.
Ability to read, write, speak, and understand English.
Sufficient fine motor skills to use computers and a calculator, and ability to withstand repetitive keyboarding for extended periods.
Visual, auditory, and communication abilities sufficient to perform the essential functions of the job.
Ability to kneel, bend, and twist at the waist occasionally.
Ability to push, pull, carry, and lift objects weighing up to 25 pounds regularly and more on occasion.
Ability to travel by plane and safely operate a motor vehicle.

Nice To Haves

At least three years of direct experience maintaining commercial and/or industrial refrigeration and HVAC equipment in a military or civilian workforce.

Responsibilities

Maintain and repair heating, ventilating, air-conditioning systems, and related energy-management systems.
Operate, maintain, and repair air compressors, distribution lines, valves, and air-control devices.
Operate, maintain, and repair pumps and associated components and lines used to handle brines or other secondary refrigerating liquids.
Maintain proper operation through seasonal changes and recalibrate controls to support energy-efficient operation.
Operate, maintain, and repair heating systems and boiler-control systems according to manufacturer specifications.
Diagnose repair needs and perform corrective work involving mechanical, plumbing, and electrical functions.
Maintain equipment records and daily logs.
Perform preventive maintenance, diagnosis, and repairs on conventional air-conditioning systems, freezers, refrigeration equipment, and associated physical plant equipment.
Maintain, repair, and replace HVAC devices and components, including thermostatic expansion and pressure-limited devices and valves, motors, compressors, starters, thermostats, piping, coils, boiler burners, and controls.
Trace electrical circuits; install and repair time clocks and regulatory controls; and make minor repairs to electrical circuit breakers and motor controls.
Perform related work as assigned or required, including balancing refrigeration and air-conditioning capacities and loads, estimating repairs and new installations, and ordering parts and equipment.
Maintain building temperatures during occupied hours in compliance with ASHRAE Standard 55-2013, Thermal Environmental Conditions for Human Occupancy.
Adjust cooling, heating, reheating, preheating, and humidity to achieve environmental conditions required by the equipment served.
Maintain, diagnose, test, overhaul, install, and repair refrigeration, dehumidification, air-conditioning, ventilation, and heating systems.
Mount compressor and condenser units on platforms or floors using hand tools and blueprints or engineering specifications.
Fabricate, assemble, and install ductwork and chassis parts using portable metalworking tools and welding equipment.
Replace filters and belts and adjust temperatures for environmental control.
Install evaporator units in chassis or air-duct systems using hand tools.
Cut and bend tubing to the required length and shape using appropriate equipment and tools.
Cut and thread pipe using machine or hand-threading equipment.
Join tubing or pipes to refrigerating units with sleeves, couplings, or unions and solder joints using a torch to form refrigerant circuits.
Install expansion and discharge valves; connect motors, compressors, temperature and humidity controls, and ventilation fans to control panels; and connect panels to power sources.
Install air and water filters in completed installations.
Test joints and connections for gas leaks using leak testers and soap solution.
Insulate pipes and secure the insulation in place.
Replace defective breaker controls, thermostats, switches, fuses, and electrical wiring using electrician’s hand tools and test equipment.
Observe pressure and vacuum gauges and adjust controls to ensure proper operation.
Wear and use required personal protective equipment, including safety glasses, safety shoes, ear plugs, and a hardhat.
Complete work orders properly and return them to work management.
Support the project Safety Plan through personal involvement in safety, including training and adherence to requirements for the relevant trades or skills.
Perform other duties as assigned.