Select the best answer for the question.
Why are systems with fixed-restriction metering devices critical to charge?
A. The expansion device can't adjust to changing conditions.
B. They can be charged only one time.
C. The large liquid receivers hold so much refrigerant.
D. You must weigh both the system and the refrigerant.
Answer (2)
The best answer is Option A: The expansion device can't adjust to changing conditions. Fixed-restriction metering devices require proper charging to maintain system efficiency. This is crucial because failure to accurately charge the system can lead to performance issues or damage.
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Fixed-restriction metering devices are critical because they do not adjust to changes in conditions, making proper charging essential. Understanding the importance of proper refrigerant management is key to maintaining system efficiency. Accurate charging involves weighing both the system and the refrigerant. ;
