Airtightness Check

Stop the vacuum pump and wait for 5 min .
Check the high- and low-pressure side readings of the manifold gauge.
- If the reading has changed, inspect for leakage and go to Evacuation. (See EVACUATION ).
- If the reading has not changed, go to Charging New R-134a Refrigerant. (See CHARGING NEW HFC-134A REFRIGERANT ).