HELiOS
Plus & Marathon
TM
Operating Instructions –
Breathing From the Portable
1. Attach both ends of a dual-lumen cannula to the connection ports
on the H300/H850. Either end of the cannula may be attached to either
connection port on the portable.
2. Position the nasal cannula properly on your face so that you will be
able to breathe comfortably.
3. Turn the flow control knob until the setting prescribed by your
physician is fully visible in the window on top of the H300/H850.
4. Breathe normally, inhaling through your nose. Oxygen delivery will
not begin until you inhale through the nasal cannula.
NOTE: If the unit is on a demand (pulse) setting, you will notice a
small pulse at the beginning of each inhalation. Oxygen is delivered
during this pulse, and continues as long as you inhale. Oxygen flow
stops when you stop inhaling.
NOTE: If the unit is in continuous flow, the H300/H850 will deliver
a steady stream of oxygen. You must continue to breathe through the
nasal cannula normally to continue receiving continuous flow.
5. You should be receiving oxygen flow now. Verify that you feel oxygen
delivery.
6. Use the duration charts available at www.CAIREmedical.com as a
guideline to determine the length of time the H300/H850 will operate.
7. Under certain conditions (especially continuous use when the
portable is not moved) the H300/H850 may develop frost on the case.
You may reduce this frost by wiping any accumulated frost off the case.
8. To stop the flow of oxygen, turn the flow control knob to the off (0)
position.
PN 21033264-C4 Rev A | User Manual
Caution: Always turn the flow control knob off (0) when
not in use.
NOTE: Do not open the vent valve during normal
operation.
NOTE: The H300/H850 may be operated in an upright
position, flat on its back, or any position in between these
two locations.
Operating Instructions – Level Verification
1. Lift the H300/H850 by the contents indicator strap.
2. Push the bottom backside of the unit forward until it is straight up
and down.
3. Observe the green bar in the contents indicator window. The window
is completely filled with the green bar when the unit is full of liquid
oxygen.
Portable Full
Portable Empty
Checking the H300/H850 contents indicator
User Troubleshooting
The following information is intended to help you troubleshoot and
solve simple operational problems that you may experience when using
your HELiOS Portable.
1. The Portable makes a hissing sound.
Hissing can occur to maintain the correct operating pressure within the
Portable. It is most likely to hiss after filling or when the position of the
Portable is changed. Hissing can last for approximately 10 minutes after
filling. Additionally, it can occur when the flow control valve is at a low
setting.
2. The Portable does not pulse after filling.
If during the filling process, the Portable is disengaged with the vent
valve lever down, pressure may be reduced within the Portable causing
a delay in the conserving device function. It may require as much
as 60 minutes to restore adequate pressure for accurate oxygen flow.