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Evacuation rig setup and how to read a vacuum decay test

Vacuum pump with large hoses to core removal tools and a micron gauge at the system, plus a chart of decay test results for dry and tight, moisture, and a leak.

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Guides that use this diagram

How to Pull a Deep Vacuum: Micron Targets and the Decay Test

More refrigeration & charging diagrams

Refrigeration cycle with superheat and subcooling measurement points
Temperature glide: bubble point and dew point for a refrigerant blend
Where refrigerant leaks usually are on a split system

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