Commercial Refrigeration Classes
We just wrapped up the first, of many, online video classes. We receive so many requests for DVDs we thought a video format was worth a shot. Hence, we are developing a new training site...
View ArticleHVAC Word Of The Week
Zoetrope – A blended refrigerant that never mixes chemically. As a result it evaporates and condenses over a temperature range, called the glide. Therefore, zoetropic refrigerants must always be...
View ArticleCapillary Tubes in 15 Minutes
Great video (with our old logo). Sometimes you do not have the cap tube size recommended by the manufacturer. The following J/B conversion chart shows how much longer or shorter the replacement cap...
View ArticleHVAC Training Academy
I am proud to announce our new HVAC Training site http://www.hvactraining.academy. By summer of 2015, we will have continuing education courses for active HVAC technicians. It is simple, easy to use,...
View ArticleCondenser Fan Cycling Controls
Most condensing units, both residential and for refrigeration have an outdoor ambient design temperature between 60° and 100°. When the outdoor temperature falls below 60° the condensing pressure...
View ArticleHow to Check a Compressor
Checking the Resistance of a Good Compressor Compressor Shorted Windings Resistance Measurements Resistance Measurements Grounded Compressor Restistance Measurements on an Open Winding The post How to...
View ArticleDon’t Forget Our Google Hangout Tonight – 8:00 PM EST
Just Click HERE Around 7:55 PM – We’ll Start Right At 8:00 I’m excited to share a some new and exiting things that we have going on this year. I don’t want to spoil the surprise, but I am going to try...
View ArticleHVAC Simulator – HVAC Training
The post HVAC Simulator – HVAC Training appeared first on HVAC Training Solutions.
View ArticlePotential Relays – What Happened to Terminal 3?
Potential relays also known as voltage relays are used in capacitor-start capacitor-run (CSR) motors. CSR motors have very high starting torque but run efficiently once started. The potential relay’s...
View ArticleCommercial Refrigeration – Walk-in Cooler Operation
The refrigeration cycle for medium temperature walk-in coolers is exactly the same as residential air conditioning systems. However, the operation of the physical components is slightly different. All...
View ArticleHVAC Troubleshooting
Have you ever been out on a job and just needed a little help? Maybe, you know what’s wrong with the system but just need some reassurance. We have the answer! We have finally designed a mobile...
View ArticleTroubleshoot an HVAC System 24 Volt Problem With Confidence
Control Wiring Troubleshooting – 24 Volt Open Trying to troubleshoot control wiring is sometimes confusing and frustrating. But, if you have a step-by-step procedure it becomes easy and accurate. Below...
View ArticleResidential Ductwork Friction Loss and Pressure Drop
Inadequate cooling and heating problems are commonly blamed on the equipment itself when the actual problem is poor/restrictive ductwork. Proper ductwork design is critical for proper heating and...
View ArticleLive HVAC Training Experiment – You’re Invited
Good Morning! I am continuing to experiment with Google Hangouts as a teaching tool. Recently, one of our students mentioned having a chat study session… which we are trying out. Another student asked...
View ArticleDuct Work and Airflow Principles – Part 2 of the Airflow Series
Before we can apply the formulas in Part-1 of our multi-part series, it is important to understand a few more concepts… blower performance, duct performance, and system operating point. Duct Pressures...
View ArticleDuctwork the Forgotten Component – Part 2
Have you ever been on a service call and everything seems to check out perfectly? The system charge is good, the filter is clean, the condenser and evaporator coils are clean, the blower speed is set...
View ArticleWanted – HVACR Technicians
Wanted – HVACR Technicians Must have 5 years experience and own their own tools. …isn’t working anymore. Just in case you haven’t noticed, it is very (and I mean very) hard to find any HVACR...
View ArticleAwesome Day of HVAC Training
HVAC Training Online and Onsite: http://www.hvactrainingsolutions.net For more information please call – (904) 671-7144 We take your HVAC training quite seriously. If you master the complex challenges...
View Article3 Phase Voltage Unbalance
The post 3 Phase Voltage Unbalance appeared first on HVAC Training Solutions.
View ArticleMotor Starters – Video
A motor starter is basically a contactor with overloads . The overloads in the starter are selected according to both the voltage and the RLA of the compressor. These protectors respond to a change in...
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