Using Your HELiOS Marathon H850 Portable Oxygen Unit
HELiOS Marathon
TM
H850 Portable Oxygen Unit Home Use Guide
21
Caution
If the hissing sound from the portable oxygen unit does
not stop within ten minutes after a fill, and excessive
visible frosting develops on the portable oxygen unit,
see
Troubleshooting
, page 41.
Note:
Immediately after filling, you may hear a slight hissing
sound from the portable oxygen unit. This is normal and
will stop after a few minutes.
9.
Checking the oxygen contents
indicator
—Make sure the portable oxygen unit
is full. The amount of liquid oxygen contained in
the portable oxygen unit is measured by a built-
in internal scale. To operate the contents
indicator follow the listed steps.
a. Lift the portable oxygen unit by the contents
indicator strap.
b. Push the bottom backside of the portable oxygen
unit so that it is straight up and down.
