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Installs, services and repairs environmental control systems, utilizing knowledge of refrigeration theory, pipefitting and structural layout.
Job Responsibility:
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 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 refrigerating units by means of sleeves, couplings or unions, and solders joints, using torch, forming complete circuit for refrigerant
Installs expansion and discharge valves in circuit
Connects motors, compressors, temperature controls, humidity controls and circulating ventilation fans to control panels and connects control panels to power source
Installs air and water filters in completed installation
Injects small amount of refrigerant into compressor to test systems and add 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 pipes in insulation batting and secures them in place with cement or wire bands
Replaces defective breaker controls, thermostats, switches, fuses and electrical wiring to repair installed units, using electrician’s hand tools and test equipment
May install, repair and service air conditioners, ranging from fifteen to twenty tons cooling capacity, in warehouses and small factory buildings
Other duties as assigned
Requirements:
Environmental Protection Agency (EPA) certification to purchase and handle ozone depleting chemical as outlined in federal and state regulations
Steam boiler knowledge is a must for this position
Ability to perform most complex and unusual tasks of the craft without supervision
Must be able to read and understand blueprints, construction drawings, schematics and diagrams as they pertain to the craft
Ability to perform work of the craft in a rapid and efficient manner under extreme conditions
Must be able to perform work safely under hazardous conditions
Able to troubleshoot and repair most complex problems
Expert knowledge of craft theory and craft materials with the ability to apply the theory and select the proper materials
Trained in all types and sizes of air conditioning refrigeration and evaporative cooling equipment