AHR 120 HVACR Maintenance

Lecture: 1 Lab: 3 Clinic: 0 Credits: 2

This course introduces the basic principles of industrial air conditioning and heating systems. Emphasis is placed on preventive maintenance procedures for heating and cooling equipment and related components. Upon completion, students should be able to perform routine preventive maintenance tasks, maintain records, and assist in routine equipment repairs.

Pre-requisite(s): DRE 097 or ENG 002 and MAT 003 (P2 grade)
Course is typically offered in Fall.
Student Learning Outcomes (SLOs)
At completion of the course, the student should be able to do the following:

Determine the location of electric heat strips in both electric furnaces and in air handlers.
Check voltage, amperage and continuity of heating strips safely using supplied test equipment.
Check the blower motor for proper operation with emphasis on current draw, air flow, cleaning and oiling.
Confirm gas line and pressures in a system.
Operation different styles of ignition of gas fired appliances.
Evaluate supply and manifold pressure as well as proper current and operating voltage.
Determine the method for replacement of an oil nozzle based on equipment specifications in lab.
Perform test on oil for contaminates in lab.
Determine the CO2 content in the gases to determine efficiency in classroom and lab.
Determine the source of heat for system in classroom and lab.
Classify type of ignition source for water heating equipment in lab.
Demonstrate the proper method for cleaning the individual ignition types in lab.
Determine the system capacity through the manufactures data plate.
Demonstrate proper removal of debris from condenser on lab equipment.
Perform condensation line flush.
Set system charge per manufactures specifications.