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According to SAE Standard 1990, Motor Vehicle A/C R-12 recovery equipment must be capable of reducing the system pressure to _________.

A) a pressure of 0 PSIG
B) a vacuum of 4 inches of Mercury
C) a vacuum of 15 inches of Mercury
D) a vacuum of 27 inches of Mercury

Answer :

According to SAE Standard 1990, Motor Vehicle A/C R-12 recovery equipment must be capable of reducing the system pressure to a vacuum of 4 Inches of Mercury. The correct option is B.

Motor Vehicle A/C R-12 recovery equipment, as per SAE Standard 1990, should reduce system pressure to a vacuum of 4 Inches of Mercury. According to the SAE Standard 1990, Motor Vehicle A/C R-12 recovery equipment must be capable of reducing the system pressure to a vacuum of 4 Inches of Mercury (Option B).

This specific requirement on system pressure reduction is part of a broader set of standards pertaining to the design, development, and operation of R-12 recovery equipment. Any device designed to recover R-12 refrigerant from a motor vehicle's air conditioning system must meet the specifications dictated by these SAE standards.

This helps ensure that the equipment works effectively, safely, and consistently across different motor vehicle makes and models.

Learn more about R-12 recovery equipment here:

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