If a refrigeration compressor using a...

If a refrigeration compressor using a...

Question 1 of 270705eccef9ebacbc34ba4d46192

If a refrigeration compressor using a thermostat as a primary controller is running continuously without significantly lowering the temperature in the refrigerated space, which of the following is most likely the trouble?

Question 1 of 27070

Q

If a refrigeration compressor using a thermostat as a primary controller is running continuously without significantly lowering the temperature in the refrigerated space, which of the following is most likely the trouble?

🔍 Key Concepts

• How a thermostat controls the compressor cycle (when it should start and stop) • What happens to system pressure and temperature when there is a shortage of refrigerant • The difference between a load problem (too much heat entering box) and a system problem (fault in refrigerant circuit)

💭 Think About

• Ask yourself: if the compressor runs continuously, what does that tell you about whether the thermostat is satisfied or not? • Which option would cause poor cooling performance even though the compressor is running normally? • Which of the choices would be more of a symptom than a root cause of ‘runs all the time, no cooling’?

✅ Before You Answer

• Check which option would affect refrigerant circulation and heat absorption in the evaporator directly • Consider whether warm food alone would keep the compressor running for a long time, or forever, without eventually cooling down • Think about whether compressor oil level or excess condenser cooling water would more likely cause mechanical damage or abnormal pressures rather than continuous running with little temperature drop