The Heating, Ventilation, and Air-Conditioning Mechanic 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.

Essential Functions

:Mounts compressor and condenser units on platform or floor using hand tools
,Follows blueprints or engineering specification
sFabricates, 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 tool
sCuts and threads pipe, using machine-threading or handthreading equipmen
tJoins tubing or pipes to various refrigerating units by means of sleeves, couplings or unions, and solders joint
sUses torch, forming complete circuit for refrigeran
tInstalls expansion and discharge valves in circuit
.Connects motors, compressors, temperature controls, humidity controls, and circulating ventilation fans to control panels an
dConnects control panels to power sourc
eInstalls air and water filters in completed installatio
nInjects 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 operatio
nTests joints and connections for gas leaks, using gauges or soap and-water solutio
nWraps pipes in insulation batting and secures them in place with cement or wire band
sReplaces defective breaker controls, thermostats, switches, fuses and electrical wiring to repair installed unit
sManage and operates Boiler and Chiller plants by maintaining system temperatures and equipment runtimes through the BAS syste
mMay install, repair and service air conditioners, chillers, and cooling towers ranging from one and a half to two hundred tons in laboratory and office buildings

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Certification/License Requirement

s:EPA Universal Licen
seSimilar qualification to what is listed to the above may be consider

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