CAIRE HELiOS Marathon H850 Home Use Manual page 28

How To Use Your H850 Personal Oxygen System
WARNING: If a major liquid oxygen leak from the
Reservoir fill connector occurs when you disengage the
H850 Portable — that is, a steady stream of liquid
oxygen — step away from the Reservoir and notify
your oxygen supplier immediately. Stay away from the
Reservoir until your supplier ensures that it is safe.
CAUTION: If a minor liquid oxygen leak from the
Reservoir fill connector occurs when you disengage the
H850 Portable, re-engage and disengage the portable
to help dislodge any ice or other obstruction. If the
liquid oxygen leak persists, notify your oxygen
supplier.
Note: Immediately after filling, you may hear a slight
hissing sound from the H850 Portable. This is
normal and will stop after a few minutes.
CAUTION: If the hissing sound from the H850
Portable does not stop within a few minutes after a fill,
and excessive visible frosting develops on the Portable,
see Note 3 in the Troubleshooting section.
9. Check the oxygen contents indicator, Figure 4, to
make sure the H850 Portable is filled to the desired
level. The amount of liquid oxygen contained in the
H850 Portable is measured by an internal scale that is
built into it. To operate the contents indicator:
a. Lift the H850 Portable by the contents indicator
strap;
b. Push the bottom backside of the H850 Portable so
that it is straight up and down; and
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