Maintenance:
1. Block the normal flow path.
2. Depressurize the filter housing.
3. Remove the drain plug from the bottom of the filter and drain the filter media.
4. Replace the drain plug.
5. Remove the fill plug from the top of the filter.
6. Fill with six (6) pounds of filter media (P/N D40152).
7. Replace fill plug.
8. Purge the filter with CO₂.
9. Place filter back into service.