HRAC Mechanic – Redstone Arsenal
- Job Category: Installation, Maintenance & Repair
- Travel: No
- Clearance: Public Trust
- Shift: Day Job
- Req ID: AFO00349
Under general supervision, installs, services, and repairs environmental-control systems in residences, department stores, office buildings, and other commercial establishments, utilizing knowledge of refrigeration theory, pipefitting, and structural layout.
Mounts compressor and condenser units on platform or floor, using hand tools, following blueprints or engineering specifications.
Fabricates, assembles, and installs ductwork and chassis parts, using portable metalworking tools 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 refrigerating units by means of sleeves, couplings, or unions, and soldiers joints, using torch, forming complete circuit for refrigerant.
Install expansion and discharge valves in circuit.
Connects motors, compressors, temperature controls, humidity controls, and circulating ventilation fans to control panels and connects control panel 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 adjusts controls to insure proper operation. Tests joints and connections for gas leaks, using gauges, or soap-and-water solution.
Wraps pipe in insulation batting and secure them in place with cement or wire bands.
Replaces defective breaker controls, thermostats, switches, fuses, and electrical wiring to repair installed unites, using electrician’s hand tools and test equipment.
May install, repair, and service air conditioners, ranging from 15 to 20 tons colling capacity, in warehouses and small factory buildings.
Performs other duties as assigned.
Responsible for conforming to all safe work practices and procedures.
4 years’ experience in HRAC mechanical and machine equipment repair, plus knowledge of the use of specialized tools to perform necessary repairs and to troubleshoot equipment.
Minimum EPA 1 and EPA 2 certification.
Specific positions require individuals to pass an annual physical examination.
Current driver’s license and good driving record.
Must be able to pass extensive background investigation to include drug screening.