Troubleshooting Challenge: A Follow-Up on a Restaurant Cooler
When you arrive, you confirm the customer’s description of the equipment’s performance and find initially that the refrigeration system pressures are far beyond what you would expect them to be, indicating that the system is obviously overcharged. Based on the information from the original technician, you decide to make two temperature tests (see the illustration in Figure 1), and when you do, you note a temperature drop of 8°F between Test A and Test B.
Your troubleshooting question: What is the specific failure that caused the original performance problem, and what do you have to do to get this unit back on line?
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Publication date: 07/05/2010