Which of the listed components, shown in the...

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Question 1 of 205eccef9dbacbc34ba4d46038

Which of the listed components, shown in the illustration is designed to close when the refrigerant low side pressure reaches its upper normal limit and, in turn, start the compressor? See illustration GS-RA-05.

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🔍 Key Concepts

• In a refrigeration system, the low-pressure control is usually installed on or near the suction (low side) line and is wired in series with the compressor control circuit. • Identify which numbered component symbol looks like a pressure-operated switch rather than a thermostat, fan, solenoid valve, or protection device. • Trace the suction line (cold/blue line returning to the compressor) and see which device there would logically sense low-side pressure and then close to start the compressor.

💭 Think About

• Follow the blue (low-pressure) line back to the compressor: which of the listed numbers is physically located where it can sense suction pressure? • Of the components 6, 11, 13, and 19, which one appears in the compressor’s control circuit rather than in the liquid line or air side of the evaporator/condenser? • Which of these numbered items has the typical symbol/shape of a pressure switch used to cycle the compressor on cut‑in and cut‑out pressures?

✅ Before You Answer

• Verify which component is connected to the suction side of the system (low side) rather than the discharge or liquid line. • Confirm that the chosen component is electrical/control, not a mechanical valve or a temperature sensor on the air side. • Check that the symbol indicates a pressure-actuated switch that would open/close contacts, consistent with starting and stopping the compressor.

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