- Make sure the entier system is on "Stop" or "Run + Manual" mode where the system is not running.
- Press the "Heater MC" Cycle to turn ON the heaters on the bottom of the purifier.
- Make sure VNVA (vent to outside) is OPEN
- Let it to vent until you see 0-1% for the level.
- If needed, one can connect a gN2 bottle to PTN and blow it outside via VNVA