CAIRE HELiOS Marathon H850 Use Manual page 50

Troubleshooting
Note:
Providers, if a major liquid oxygen discharge (steady
stream) occurs, open the vent valve on the reservoir to
vent the pressure and halt the flow of liquid oxygen. If
unable to safely open the vent valve, remove all persons
from the area and ventilate the area by opening
windows and doors. Do not walk on areas exposed to
liquid oxygen for 60 minutes after frost disappears.
46 HELiOS Marathon
TM
H850 Portable Oxygen Unit Home Use Guide