A relief valve is designed to protect the...

Question 1 of 270705eccef9dbacbc34ba4d46039

A relief valve is designed to protect the physical integrity of a refrigeration system as a result of over-pressurization. What device is designed to stop a running compressor before the relief valve lifts?

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Question 1 of 27070

🔍 Key Concepts

• Relief valve protects the system from dangerously high pressure by venting refrigerant if pressure gets too high • Difference between high pressure cutout and low pressure cutout in a refrigeration system • Which control is intended to stop the compressor before a mechanical safety (relief valve) needs to operate

💭 Think About

• Ask yourself: which of these switches is directly related to stopping the compressor when the discharge (head) pressure becomes excessive? • Think about what situation would cause the relief valve to lift, and which control is meant to act first to avoid that happening. • For each option, decide whether it responds to low suction pressure, oil pressure problems, or high discharge pressure.

✅ Before You Answer

• Identify which option is specifically associated with excessive discharge (head) pressure rather than low suction or oil problems. • Confirm which device is an automatic safety control that shuts down the compressor on high pressure, not after a failure has already occurred. • Eliminate any options that respond to low pressure or oil failure, since those protect against different problems.