Let's go with dictionary definitions of each one first. pump noun 1. A mechanical device using suction or pressure to raise or move liquids, compress gases, or force air into inflatable objects such as tires. compressor noun 1. an instrument or device for compressing something. Both compressors and pumps move fluids, and a fluid: Yields or […]

This article was written by RSES CM and excellent market refrigeration tech Jeremy Smith. Thanks, Jeremy! I frequently see techs online struggling with charging or troubleshooting refrigeration equipment and using subcooling as a diagnostic or charging method. Please don't do this unless you understand it fully. Many times, trying to charge a refrigeration system to […]

  The most common—and often most frustrating—questions that trainers and senior techs get asked sound something like this: “What should my ______ be?” or “My _____ is at ______. Does that sound right?” Usually, when the conversation is over, both the senior and junior techs walk away feeling frustrated because the junior tech just wanted […]