The fluid used to act against the range...

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Question 1 of 205eccef9dbacbc34ba4d46046

The fluid used to act against the range adjusting spring and to directly control the position of the capacity control valve of the refrigeration compressor capacity control system illustrated, is obtained from where? See illustration GS-RA-13.

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🔍 Key Concepts

• Trace the capillary line shown on the diagram and note the label at its source. • Identify which pressure/fluid is shown acting on the side of the diaphragm opposite the range adjusting spring. • Use the color legend (control oil pressure, oil pump pressure, crankcase pressure) to see what medium is present at the capacity control device.

💭 Think About

• Where does the small line connected to the surge chamber/diaphragm originate, and how is it labeled on the illustration? • Which of the four answer choices corresponds to the pressure source that is actually piped into that capillary line in this type of compressor control system? • Is the fluid that moves the diaphragm more likely to be high‑pressure liquid, hot discharge gas, lube oil, or the pressure inside the compressor housing itself?

✅ Before You Answer

• Verify which line is labeled From Crankcase Pressure and where it connects. • Confirm that the fluid acting on the diaphragm travels through the capillary to the side opposite the range adjustment spring. • Make sure you are not confusing oil pump pressure (to the unloader power element) with the pressure used to move the diaphragm that positions the capacity control valve.

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