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  • R 299: Special Topics

    1.00 - 9.00 Credits
    North Dakota State College of Science

    A course designed to meet special departmental needs.
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  • REFG 101: Refrigeration Technology

    3.00 Credits
    North Dakota State College of Science

    (3 credits) This course will touch on most aspects of the refrigeration, heating and air-conditioning trade. These subjects include: safety as it pertains to the HVAC/R industry, tools and their uses, sheet metal layout and fabrication, iron pipe threading and fabrication, copper tubing joining methods and PVC piping. The class will thoroughly study the principals of heat transfer, refrigerants and basic refrigeration cycle. Refrigerant recovery, system evacuation and system charging will also be covered in detail. This lecture is accompanied by the fabrication lab (REFG 111) and refrigeration systems lab (REFG 113) to allow application of content covered in this lecture. Corequisites: REFG 111 and REFG 113. (F)
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  • REFG 102: Refrigeration Technology

    3.00 Credits
    North Dakota State College of Science

    This course will provide an in-depth study of the four essential components of the refrigeration system; evaporators, condensers, compressors and metering devices. Normal system operating conditions will be discussed for a variety of refrigeration and air conditioning applications. Understanding normal operating conditions will be essential in learning troubleshooting techniques. This course will begin with a review of the theories of refrigerants, refrigerant recovery methods, and system evacuation. Prerequisite: REFG 101. (S)
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  • REFG 104: Refrigerants:Chemistry and Ecology

    1.00 Credits
    North Dakota State College of Science

    This course is a study of the chemical composition of the refrigerants commonly used in the refrigeration and air conditioning industry. The effects of the refrigerants on the environment will be discussed in-depth. The study will also encompass the acceptable service procedures recommended by the Environmental Protection Agency for preventing the release of refrigerants to the atmosphere. During the course the students will examine oils and the appropriate application, changing, and disposal methods. This course is designed to be a concentrated study to help the student pass the EPA Refrigerant Certification Exam. (S)
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  • REFG 110: Blueprint Reading and Estimating

    2.00 Credits
    North Dakota State College of Science

    This course is designed to give students a good working knowledge of blueprints, teaching them measuring and scaling skills, how to identify symbols and definitions of pertinent terms. The 1-800-342-4325 creating wiring diagrams from looking at existing diagrams. Taking volt, ohm and amperage readings for preventive maintenance will also be an activity in this class. Electrical simulators will be utilized by the students during the duration of the course. Prerequisites: REFG 121 and REFG 123. Corequisite: REFG 122. (S)
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  • REFG 111: Fabrication Lab

    2.00 Credits
    North Dakota State College of Science

    This course will be a practical hands-on counterpart to the REFG 101 theory class. It will introduce the student to the fabrication of sheet metal air distribution components, iron gas piping, copper tubing and PVC piping components. The activities will introduce the student to the fabrication and mechanical skills necessary for the installation of heating, ventilating, air conditioning and refrigeration equipment. REFG 111 will provide actual fabrication tools and equipment where the student will be able to practice fabricating projects until they are acceptable trade quality projects. Sheet metal layout, piping leak testing, threading, priming, gluing, silver soldering and silver brazing are examples of activities in this lab. No prerequisites required. (F)
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  • REFG 112: Domestic and Residential Systems Lab

    2.00 Credits
    North Dakota State College of Science

    This course will allow the student to apply refrigeration fundamentals to actual domestic and residential systems. Diagnostics, repairs and component replacements will be applied to refrigerators, freezers, window air conditioners, de-humidifiers and central air conditioning systems. There will also be application opportunities for the knowledge learned in REFG 102. A key component of the course will be providing repair reports on two separate pieces of equipment that the student has provided. Prerequisites: REFG 101, REFG 111 or equivalent. (S)
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  • REFG 113: Refrigeration Systems Lab

    2.00 Credits
    North Dakota State College of Science

    This course will be a practical hands-on counterpart to the REFG 101 theory class. It will introduce the student to the refrigeration system and allow the student to take necessary readings and measurements to solidify their understanding of a simple refrigeration system. Also, there will be introductions and opportunities to use evacuation, refrigerant recovery and refrigerant charging equipment. Corequisite: REFG 101. (F)
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  • REFG 121: Electrical Theory I

    3.00 Credits
    North Dakota State College of Science

    This course will introduce the student to the theories of electricity with an emphasis on how these theories apply to the HVAC/R industries. It will begin by examining atomic theory and how to use this knowledge to explain electrical pressure, current flow, resistance and electrical power. There
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  • REFG 122: Electrical Theory II

    3.00 Credits
    North Dakota State College of Science

    From motor theory to HVAC/R components to the wide varieties of electrical diagrams, the course focus is to give the student a strong background in electrical understanding necessary to install and service heating, ventilating, air conditioning and refrigeration systems. Special emphasis will be applied to troubleshooting techniques and skills. This course will provide an in-depth look at electric motor theory while examining electrical inductance and capacitance. Five motor types will be studied with an emphasis on operation, selection and application, as well as troubleshooting techniques. Motor starting dynamics and starting components will be studied as well. The course will cover the wide variety of components and circuits that are likely to be encountered in the HVAC/R industry. Electrical circuits and diagrams will be studied in-depth. Prerequisites: REFG 121 and REFG 123 or equivalents. (S)
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