During or following an evacuation, which of the following typically indicates a refrigerant circuit has a leak?
a. The vacuum gauge drops rapidly to 500 microns and will not go lower.
b. The vacuum gauge shows a pressure rise that continues up to 0 psig when the pump is
isolated.
c. The vacuum gauge shows a pressure rise but levels off between 1,000 and 2,000 microns
when the pump is isolated.
d. A constant reading on the vacuum gauge of 500 microns is displayed when the pump is
isolated.
b. The vacuum gauge shows a pressure rise that continues up to 0 psig when the pump is
isolated.
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Fill in the blank(s) with the appropriate word(s).
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