Question 1 of 270705eccef9dbacbc34ba4d46063

As shown in the illustrated refrigeration system piping schematic diagram with the various accessories and controls and equipped with a conventional pump-down cycle, what does the temperature control thermostatic switch control? See illustration GS-RA-39.

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Question 1 of 27070
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Q

As shown in the illustrated refrigeration system piping schematic diagram with the various accessories and controls and equipped with a conventional pump-down cycle, what does the temperature control thermostatic switch control? See illustration GS-RA-39.

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🔍 Key Concepts

• Conventional pump-down cycle operation in refrigeration systems • Role of the space/box temperature control thermostat versus the low-pressure control • Function and normal actuation method of the liquid line solenoid valve in a pump-down system

💭 Think About

• In a pump-down system, when the box reaches the desired temperature, which component is supposed to stop refrigerant flow into the evaporator so the compressor can pump the remaining refrigerant down to the receiver? • Does the room thermostat usually switch the compressor motor directly in a pump-down system, or does another pressure control handle compressor stopping and starting? • Which item in the drawing is physically connected (piped or wired) to the temperature control located at the evaporator outlet area?

✅ Before You Answer

• Identify on the schematic which component is labeled as the temperature control and trace its connection to the nearby valve or device. • Verify which device actually opens/closes to allow or block liquid refrigerant into the evaporator when cooling is demanded. • Confirm that the low-pressure (suction) control is what starts/stops the compressor in a pump-down system, not the thermostat itself.