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When evacuating a vapor compression system, how many microns does the vacuum need to achieve?

A. 500 microns
B. 1000 microns
C. 5000 microns
D. 10000 microns

Answer :

Final answer:

Evacuating a vapor compression system requires achieving a low vacuum pressure of 500 microns to ensure the removal of non-condensable gases and moisture, which is crucial for the system's performance. Hence, option A is the correct answer.

Explanation:

When evacuating a vapor compression system, the vacuum needs to achieve a pressure as low as 500 microns.

Micron is a unit that is used to measure vacuum pressure, and achieving a low micron level ensures that almost all the non-condensable gases and moisture are removed from the system.

Moisture can create acids when mixed with the refrigerants used in vapor compression systems, leading to system degradation and failure. Therefore, reaching a vacuum level of 500 microns is critical to the performance and longevity of the system.

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