Description
This course introduces proper tool usage, refrigeration, lines, and component operation. Students learn the layout and fabrication of residential duct fittings. They will learn to read a temperature/pressure chart and apply it to various refrigerants which are used in the trade. Procedures such as recovery, evacuation, leak testing, and charging of refrigerant will be performed on various types of equipment to EPA standards. Students will be introduced to various types of metering devices, including gauge manifold and two-way service valves. Students will learn trouble diagnosis, charging methods, and the proper operation of a refrigerator and air conditioner, including proper pressures, temperatures, and running times. This course then continues with the introduction of basic electrical theory, Ohm’s law, insulators, conductors, switches, and loads. Students will read and produce wiring/ladder diagrams, learn to wire and troubleshoot control circuits, motors, compressors, and relays.