Furnaceman Technologies
"Refrigeration with EPA Certification" (total: 20 hrs.)
(Prerequisites: None)

Unlike many trades, refrigeration is uniquely challenging and interesting. The thing that makes this such a challenge is the fact that the process takes place out of sight. Solving refrigeration problems takes on a kind of nerdy "who-done-it" process. You can't see with your eyes what is going on, so you have to rely on test instruments, reference data, symptoms, and a "solid base" understanding of refrigeration theory to be able to troubleshoot problems.

We've seen valuable refrigeration equipment destroyed because so-called "technicians" didn't know what they were doing. We've also seen HVAC technicians condemn perfectly good equipment because they didn't have that "solid base" understanding of refrigeration that would have allowed them to find the real problem.

Many successful refrigeration technicians mentally put themselves into the process. They start to think like a molecule of refrigerant. They visualize themselves racing through the various circuits of a refrigeration system, picking up heat energy here, giving off heat energy there, changing from a liquid to a gas, and visa-versa. They compare what is happening with what should be happening. It's this "think like a molecule of refrigerant" that allows them to solve the problems that others can't.

"Refrigeration with EPA Certification" is a "Solid Base" 4 evening 16 hour fundamentals course that is loaded with useful information. For the duration of each class, we hammer home refrigeration theory until every person starts thinking like that molecule of refrigerant. We cover every nook and cranny of the typical air conditioner until we know the systems inside and out. The meaning of terms like saturation, super heat, sub cooling, enthalpy, slugging, fixed bore metering devices, thermal expansion valves, pressure drops, and flash gas will become crystal clear. The fifth evening (4 hours) will be for final review of EPA regulations, and taking the EPA test.

Course Outline:

· Heat energy

· Sensible and Latent heat
· Understanding fluids and why they flow


· What is a refrigerant

· A close look at refrigerants
including R-22 & R-410a
Refrigeration Components
· Compressor

· Condenser
· Metering devices
· Evaporator
· The PT chart ~ what is its function, what are its limitations
In Depth Study of the Refrigeration Cycle
· Where will we find saturated liquids and vapors
· Where we will find superheated vapor, sub-cooled liquid, and both liquid & vapor
· How does a refrigeration respond to changing conditions
· Charging a refrigeration system

· Introduction to troubleshooting AC & refrigeration systems
EPA Prep & test
· Review need for EPA certification
· Study why Ozone is being depleted
· Review study guide
· Take and review answers to several practice exams
· EPA test will be given during the final meeting

This course will consist of 5 evening classes nights from about 5:00 - 9:00PM
The location for this seminar has not been determined at this time, but will be held at a safe and convenient location.