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Mekko Donathan HVAC/R Evacuation Quiz September 20, 2022, 4:21 pm
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Ever Hear of Copper Plating Inside the Compressor?
First off, I want to thank Ulises Palacios for taking these photos. He is in the habit of cutting open the compressors he replaces to see why they failed (when possible). I think that's pretty boss. So, why would the compressor have copper plating on the inside? They certainly aren't manufactured that way. The short […]Read more
Weighing Refrigerant In and Out
If you don't use a scale every time you add or remove refrigerant, I suggest you begin doing so immediately, if not sooner. Weighing in while charging is fairly obvious, and it's useful so you can keep track of what you are using and how much to charge a customer. When you have a system […]Read more
Defrost Time & Temperature
The most common method to defrost appropriately in refrigeration involves both time for initiation and a combination of time and temperature for defrost termination (ending defrost). But why can't we just use temperature or time alone? (You may wonder.) Imagine a common freezer with a designed box temperature of -10°F and a coil temperature of […]Read more