Job Description:

• 1) Installs, services, and repairs environmental control systems in residences, department stores, office buildings, and commercial establishments, utilizing knowledge of refrigeration theory, pipefitting, and structural layout: Mounts compressor and condenser units on platform or floor, using handtools, following blueprints or engineering specifications.

• 2) Fabricates, assembles, and installs ductwork and chassis parts, using portable metalworking tools and welding equipment.

• 3) Installs air and water filters in completed installation.

• 4) Injects small amount of refrigerant into compressor to test systems, and adds freon gas to build up prescribed operating pressure.

• 5) Observes pressure and vacuum gauges and adjusts controls to ensure efficient operation.

• 6) Tests joints and connections for gas leaks, using gauges or soap-and-water solution.

• 7) Wraps pipes in insulation batting and secures them in place with cement or wire bands.

• 8) Replaces defective breaker controls, thermostats, switches, fuses, and electrical wiring to repair installed units, using electrician's handtools and test equipment.

• 9) May install, repair, and service air-conditioners, ranging from fifteen to twenty tons cooling capacity, in warehouses and factory buildings and be designated Air-Conditioning Mechanic, Industrial.