When all the individual box solenoid valves...

Question 1 of 270705eccef9dbacbc34ba4d4602c

When all the individual box solenoid valves in a multi-box refrigeration plant are closed by collective the action of all the individual box thermostats, by what means will the compressor normally be stopped?

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Question 1 of 27070

🔍 Key Concepts

• Refrigeration compressor control in multi-box systems • Role of pressure-operated switches in protecting and cycling compressors • What happens to suction pressure when all expansion/solenoid valves are shut

💭 Think About

• Think about what changes inside the refrigerant circuit when all box solenoid valves close—especially on the compressor suction side. • Which type of control (water level, pressure, or temperature) would most directly sense that all cooling demand has stopped? • Consider which device is commonly used to automatically start and stop a refrigeration compressor as the system load increases or decreases.

✅ Before You Answer

• Identify whether the key variable that changes first when all solenoid valves close is pressure or temperature at the compressor suction. • Recall which protective/control device is normally installed on the suction line versus the discharge line of the compressor. • Verify which device is primarily for normal cycling of the compressor, rather than emergency shutdown or protection only.