A PRACTICAL APPROACH TO TROUBLESHOOTING
COMFORT COOLING ELECTRICAL SYSTEMS
The Electrical Fundamentals for HVACR Technicians is one awesome training DVD/Video…
In “Electrical Fundamentals For HVAC/R Technicians, A Practical Approach To Electrical Troubleshooting & Servicing Comfort Cooling Systems” well-known HVAC industry trainer Jim Johnson takes the mystery out of electrical troubleshooting. In this two-hour video presentation, he takes the technician through the process of building a dual voltage schematic for a comfort cooling system, then shows just how simple it is to correctly troubleshoot a circuit and track down and isolate a problem.
Are there elements of theory included in the program?
“Absolutely,” says Johnson.
“But it isn’t done in the “traditional” academic manner. Electrical theory is presented as part of the program, but is woven in and around the practical aspects of HVAC training and using a meter to test and troubleshoot circuits and components. Technicians aren’t bored with long theoretical explanations before they get to the stuff that really interests them, which is how to troubleshoot a system and get it fixed.”
And, technicians don’t just zone out in front of a TV for two hours. They participate.
This HVAC training DVD/Video learning package consists of a digital-quality DVD and a separate Resource Material CD. To participate in this interactive learning experience, insert the CD into your desktop or laptop computer, open the file on the CD, and print your own copy of the Resource Guide. Then, use the printed hard copy of the Resource Guide to follow along as you play the DVD. Using the Resource Guide allows technicians to actually go through the step-by-step process of getting a schematic diagram down on paper along with Jim, then use the diagram to troubleshoot the four problems that are presented at the end of the program.
And it’s reasonably priced too.
The complete video package sells for $80.00, which includes shipping and handling. This is less than the cost of a one-day workshop or semester long course for one technician. And once the DVD is part of a company’s library, it can be used whenever it’s convenient and it can be used over and over again.
“This stuff ain’t rocket science,” Johnson is fond of saying, “so it shouldn’t take more than a couple of hours for a technician to grasp the very fundamental concepts of a schematic diagram and how to use it to troubleshoot a piece of equipment.”
“I’m not saying we take anybody to journeyman status in a couple of short hops,” says Johnson, “but once we lay the groundwork of fundamentals that a professional technician needs to understand, they can take off from there and invest time and effort into becoming a top-notch troubleshooter.”
Johnson stresses that this program isn’t intended to be the single training solution to the professional and technical development of either new or experienced technicians. He recommends that technicians take advantage of factory-sponsored workshops whenever they can, and that they look into community college and trade school programs that are available. It’s his opinion that the learning never stops for the HVAC/R technician.
“I’ve been doing refrigeration and electrical work since I was in high school,” says Johnson, “and I still find myself learning something new on a regular basis. My stuff is only one approach that technicians can use to develop their skill, build confidence and do a better-than-average job. Look around. There’s a lot of good stuff out there and technicians can make good use of it by investing a couple of hours per week in their personal and professional development.”
Johnson says the techniques used in the video program are the result of thousands of classroom hours and hundreds of seminars during which he’s taught and explained things to many thousands of students in the HVAC/R industry.
“The information is presented as it is because participants in our HVAC training programs have asked questions and had the courage to raise their hand and say they didn’t understand something,” says Johnson.
“One of the unique things the video does is answer questions before they’re even asked, ” he says, “and for that, we owe a debt of gratitude to those who have asked questions in class, re-explained things in their own words during a workshop and provided their own special brand of feedback after a seminar.”
ELECTRICAL FUNDAMENTALS FOR HVACR TECHNICIANS PROGRAM OUTLNE
A Practical Approach To Electrical Troubleshooting & Servicing Comfort Cooling Systems
I. Quiz Questions and Testing Your Knowledge
II. Eliminating The Mystery Behind The Dual Voltage Schematic
- Translating schematic symbols to what you’re actually seeing in front of you.
- Understanding that the dual voltage schematic is built on the symbol for the step-down transformer.
- Testing transformer windings with an analog meter.
- Testing transformer windings with a digital meter.
III. How Transformers Work To Provide Control Voltage In HVACR Systems
- Voltage explained.
- Electromagnetism: Why it exists in transformer windings in the first place.
- How an ammeter shows an electromagnetic field around a wire.
- Understanding VA ratings in transformers.
- Troubleshooting a transformer with a voltmeter.
IV. Why Electricity Is Referred To As Electron Flow
- Atomic theory
- Everything is made of atoms
- Materials that are good conductors of electricity
- Electron flow
- Alternating current: phases and cycles
V. Electrical Energy Distribution To HVACR Equipment
1. Circuit Breakers, testing and troubleshooting
2. Fused disconnects, what to look for in “problem” disconnect boxes
3. Making sure you have the right fuse for the job
4. Testing fuses with an analog meter
5. Testing fuses with a digital meter
6.. Testing fused circuits with a voltmeter
VI. How Thermostats Work In Control Circuits
- Adding the thermostat to the dual voltage schematic
- Schematic symbols for the thermostat
- Why the thermostat circuit is referred to as a series circuit
VII. Contactors: How They’re Controlled and What They Do
- Adding the contactor to the dual voltage schematic
- Testing a contactor coil with an analog meter
- Testing a contactor coil with a digital meter
- Troubleshooting a contactor with a voltmeter, testing the coil and contact points
- Adding the compressor to the dual voltage schematic
- Testing compressor motor windings with an analog meter
- Testing compressor motor windings with a digital meter
- Motor fundamentals, how a motor really works
IX. Condenser Fan Motor
- Adding the condenser fan motor to the dual voltage schematic
- Why compressor and condenser fan motor circuits are referred to as parallel circuits
X. The Indoor Fan Motor
A. Adding the indoor fan motor to the dual voltage schematic
XI. Indoor Fan Relays
- Adding the indoor fan relay to the dual voltage schematic
- Testing the indoor fan relay with an analog meter
- Testing the indoor fan relay with a digital meter
- Understanding N.C. and N.O. contacts in an indoor fan relay
- Adding run capacitors to the dual voltage schematic
- What a run capacitor does
- Why adding a run capacitor creates a PSC circuit
- Testing a capacitor with an analog meter
- Testing a capacitor with a digital meter
XIII. The Potential Relay
- The important numbers on the potential relay
- Testing the potential relay coil with an analog meter
- Testing the potential relay with a digital meter
- Testing the potential relay contacts with an ohmmeter
- Adding the potential relay to the dual voltage schematic
- How the potential relay works in conjunction with the start windings: Understanding pickup voltage
XIV. Start Capacitors
- Adding the start capacitor to the dual voltage schematic
- Testing a start capacitor with an analog meter
- Testing a start capacitor with a digital meter
XV. Troubleshooting: Using The Dual Voltage Schematic To Isolate A Problem
Problem #1: Unit Won’t Start, Nothing Runs
Problem #2: Indoor and Condenser Fan Motors Run, But Compressor Hums and Won’t Start
Problem #3: Outdoor Fan Motor Isn’t Running
Problem #4: Indoor Fan Motor Isn’t Running
XVI. Quiz Question Review
Would you like to view one of our HVAC technician training video programs for free? You can by clicking HERE.
Or, purchase our HVACR Fundamentals Package for a great money saving opportunity which combines
- #1 Electrical Fundamentals For HVACR Technicians
- #2 Refrigeration Fundamentals For HVACR Technicians
This is a two DVD set.