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Answer :
Final answer:
Correct option is 1) .During a vacuum leak test, if the pressure reads above 0 psig, it means that refrigerant is still trapped in the system.
Explanation:
During a vacuum leak test, if the pressure increases above 0 psig after a while, then refrigerant is still trapped in the system. The pressure gauge in this context is measuring gauge pressure, which is the pressure relative to atmospheric pressure. If the gauge reads above zero, it indicates that the pressure inside the system is higher than the atmospheric pressure outside, suggesting that there's still some amount of refrigerant present. On the other hand, if the pressure reads zero, it means the inside and outside pressures are equal, and a negative reading would indicate a vacuum relative to the outside atmosphere.
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