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  • Commercial Refrigeration Ch.7
  • Commercial Refrigeration Ch.7
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Commercial Refrigeration Ch.7 (Refrigeration System Troubleshooting) with Complete Solutions

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Commercial Refrigeration Ch.7 (Refrigeration System Troubleshooting) with Complete SolutionsCommercial Refrigeration Ch.7 (Refrigeration System Troubleshooting) with Complete SolutionsCommercial Refrigeration Ch.7 (Refrigeration System Troubleshooting) with Complete SolutionsWhat is the first thing a technician needs to know about the system he is trying to troubleshoot? - ANSWER - How the system is supposed to operate. What are eight pieces of information needed to diagnose a system problem? - ANSWER - 1. Ambient temperature entering the condenser 2. Condenser temperature 3. Condenser split 4. Condenser subcooling

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Commercial Refrigeration Ch.7
(Refrigeration System
Troubleshooting) with Complete
Solutions
What is the first thing a technician needs to know about the system he is trying to
troubleshoot? - ANSWER - How the system is supposed to operate.


What are eight pieces of information needed to diagnose a system problem? -
ANSWER - 1. Ambient temperature entering the condenser
2. Condenser temperature
3. Condenser split
4. Condenser subcooling
5. Refrigerated space temperatures entering the evaporator
6. Evaporator temperature
7. Evaporator TD
8. Evaporator superheat


If warm product is added to a box how do the evaporator temperature and pressure
respond? - ANSWER - The temperature and pressure rise.


Why does raising the temperature of refrigerant raise its pressure? - ANSWER - The
added heat makes the refrigerant boil faster.


If the evaporator is covered in frost, dirt, or the fan motor stops how do the
evaporator temperature and pressure respond? - ANSWER - The evaporator
temperature and pressure fall.

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