Years ago, it was common for shops to have a central power source that drove all the tools through a system of belts, wheels and driveshafts. The power was routed around the work space by mechanical ...

The hottest temperature point in a refrigeration or air conditioning system is on the back of the compressor’s discharge valve, as shown in Figure 1. However, since this point cannot be measured by a ...

A refrigeration or air conditioning system that is experiencing leaky valves or worn rings may be the most challenging troubleshooting scenario a technician will experience. That’s because a varying ...