Evaporative Check Valve: Testing and Inspection

1. REMOVE CHECK VALVE.
2. INSPECT CHECK VALVE.



- Check that air flows from the yellow port to the black port.
- Check that air does not flow from the black port to the yellow port.

- If operation is not as specified, replace check valve.

3. REINSTALL CHECK VALVE.
- Reinstall the check valve with the black port facing the purge port side.