HVAC Mechanic

Tlingit Haida Tribal Business Corporation•Blackstone, VA

18d•Onsite

About The Position

The Heating, Ventilation, and Air-Conditioning (HVAC) Mechanic, Lead serves as a lead worker for assigned HVAC Mechanics in addition to performing the responsibilities of a HVAC Mechanic including installs, services, and repairs of environmental-control systems.

Requirements

Ability to obtain and maintain a secret clearance.
Must be Universal CFC certified.
Must have Journeyman HVAC license for the state of Virginia.
Must have a thorough knowledge of EMS, to make operational changes to remote HVAC equipment throughout the facilities.
Must have a thorough and advanced knowledge of every cycle and its components; such as electronic circuitry, high and low voltage electricity, pneumatic and electronic control systems that sense minute changes in temperature and humidity, dew points, air water and refrigerant pressures; air and water flow and overload protection, adjust temperatures, damper position, space changes, etc.
Has responsibility of being available on twenty-four (24) hour call to facilitate emergency repairs to equipment that is critical to operations.
Must have skill and technical ability to interpret so as to complete installations and repairs as required and must be able to apply advanced trade techniques to modify and execute in order to minimize equipment down-time. This is done in most cases without benefit of direct supervision.
Must have a working knowledge of other trades such as: Sheet metal; fire dampers, zone control, air flow volume and velocity and damper linkages; plumbing; water and steam supply, drainage, gravity systems, condensate, water make up evaporation and human protection systems. Electric circuit breakers, relays, solenoids, transformers, timers, electromagnetic contactors vacuum tubes, motors and motor controls and overload protection devices.
Proficient in all types of soldering and brazing. This work requires the service of a highly skilled and knowledgeable technician with the necessary specialized training in this field.
Must be well versed in the use of many and varied types of test equipment such as volt-meters, ammeters, amprobes, psychrometers, capacitor analyzer temperature testers, leak detectors, micrometer, CO2 testers, vacuum gauges, meggers and must possess outstanding eye-hand coordination.
Must be able to work alternate shift schedules when necessary to meet the customer's mission requirements, including weekends and holidays.
Must possess and maintain a valid state driver’s license and a safe driving record, in accordance with company policy, to operate vehicles or equipment as required for the position.

Responsibilities

Pipefitting and structural layout.
Mounts compressor and condenser units on platform or floor using hand tools.
Follows blueprints or engineering specifications.
Fabricates, assembles, and installs ductwork and chassis parts.
Uses portable metalworking tools and welding equipment.
Installs evaporator unit in chassis or in air-duct system using hand tools.
Cuts and bends tubing to correct length and shape, using cutting and bending equipment and tools.
Cuts and threads pipe, using machine threading or hand-threading equipment.
Joins tubing or pipes to various refrigeration units by means of sleeves, couplings or unions, and solder joints using a torch.
Forms complete circuit for refrigerant, installs expansion and discharge valves in circuit.
Connects motors, compressor, temperature controls, humidity controls, and circulating ventilation fans to control panels connected to power source.
Installs air and water filters in completed installation.
Injects small amount of refrigerant into compressor to test systems and adds Freon gas to build up prescribed operating pressure.
Observes pressure and vacuum gauges and adjust controls to insure proper operation.
Test joints and connections for gas leaks using gauges or soap- and-water solution.
Wraps pipe in insulation batting and secures them in place with cement or wire bands.
Replaces defective breaker controls, thermostat, switches, fuses and electrical wiring to repair installed units.
May install, repair and service air conditioners, ranging from fifteen to twenty (20) tons cooling capacity in warehouse and small factory buildings.
Performs minor painting chores consistent with preventive maintenance functions and minor repairs.
Performs minor preventive maintenance functions which include but are not limited to: Changing filters; cleaning cooling towers, heating and cooling coils; cleaning floor drains, grease traps, roof gutters, downspouts; and changing fluorescent tubes and other light bulbs where needed.
Adhere to company policies, procedures, and safety regulations.
Performs other duties as assigned.