CAIRE HELiOS Marathon H850 Use Manual page 31

Caution
Times may vary. If you use the portable oxygen unit in
the horizontal position on its back, use times may also
be reduced.
Caution
The portable oxygen unit will not deliver oxygen to you
if the flow control knob is set between flow settings.
Caution
You must use a 7-foot length or shorter dual-lumen
cannula to ensure proper oxygen delivery from the
portable oxygen unit. See Accessories, page 47. Verify
both connections of the dual-lumen cannula are firmly
attached to the portable oxygen unit oxygen outlet and
sensor connectors.
Note:
Your use time may vary substantially from the use times
listed in the table. You should learn through experience
how long the portable oxygen unit will last given your
particular breathing patterns and activity level.
3. Positioning the dual-lumen cannula—With
HELiOS Marathon
Using Your HELiOS Marathon H850 Portable Oxygen Unit
the tips of the cannula and lip rest pointing
downward and toward you, place the two tips
into your nostrils.
a. Standard position—Run the tubing over your
ears and then slide the sleeve up under your chin
until the cannula feels comfortable. Then breathe
normally. See Standard Cannula Placement (Under
Chin), Figure 14 on page 28.
b. Alternate position—Bring the cannula over your
head from behind and run the tubing over your
ears. Leave the sleeve loose and allow the tubing
to fall down your back or over your shoulder and
around to the portable oxygen unit. Then breathe
normally. See Alternate Cannula Placement
(Behind Neck), Figure 15 on page 29.
TM
H850 Portable Oxygen Unit Home Use Guide 27