Is a nitrogen test necessary? Is 500 microns considered leak-free?
The pressure test of 500 microns serves as a reliable leak check. A constant reading on the vacuum gauge between 500 and 1,000 microns for at least seven minutes indicates a tightly sealed, leak-free, and dry system.
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Негізгі бет HVAC Evacuation. Leak testing by vacuum..500 microns ≠ No Leak
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