In this troubleshooting situation, the equipment is a walk-in refrigeration system in a busy restaurant that has experienced a compressor failure…specifically a mechanical failure. And it’s not the first time. This particular unit has experienced compressor failure twice in the several years it’s been in operation, and the customer is looking for some assurance that history will not repeat itself after you have completed your compressor replacement. In Figure One, we’re showing you an overview of this particular system, illustrating the actual physical layout of the system components and their relationship to each other.

And, in Figure Two, we’re showing you a more detailed look at one segment of the system: The TXV, evaporator coil, and suction line. To consider the correct answer to this problem, look at both illustrations from the perspective of something that is not shown as part of the system, and would be on the suction line if it was there.

Your troubleshooting question: What is the source of problem that is responsible for repeated compressor failures on this unit?

Compare your answer with ours HERE.

Publication date: 5/7/2018

Want more HVAC industry news and information? Join The NEWS on Facebook, Twitter, and LinkedIn today!