CAIRE HELiOS Marathon H850 Use Manual page 29

2. Setting the oxygen flow rate—The portable
HELiOS Marathon
Using Your HELiOS Marathon H850 Portable Oxygen Unit
oxygen unit has two delivery modes to help you
control the rate of oxygen that flows to you
through the dual-lumen nasal cannula:
continuous mode and demand mode. The rate
of oxygen you need for when you are resting
may be different than the rate you need when
you are moving about. Set your rate to the
setting prescribed by your physician.
a. Continuous Mode—Oxygen will flow at a
continuous, steady rate. Turn the flow control
knob on the top of the portable oxygen unit
counterclockwise for continuous flow rates of 1,
2, 3, 4, 5, 6 liters per minute (lpm) on the `C'
settings from C1 through C6, respectively. See
Flow setting options, Figure 12.
b. Demand Mode—Oxygen will flow only while
you inhale through your nose. You should notice
a small pulse at the beginning of each breath.
Oxygen is delivered during this pulse, and
continues as long as you inhale. Oxygen flow
stops when you stop inhaling. Turn the flow
control knob on the top of the portable oxygen
unit clockwise for demand flow rates of D1.5, D2,
D2.5, D3 and D4. These settings do not
necessarily correspond to liters per minute (lpm).
Patients who use these settings should do so only
after their health care provider determines the
appropriate setting
Figure 12.
continuous
Figure 12. Flow setting options
TM
H850 Portable Oxygen Unit Home Use Guide
.
See Flow setting options,
demand
t
25