HELiOS Portables Technical Service Manual • PN 20562190 Rev E
17
HELiOS P
or
tables
Operation
IX
Filling
1. Dry the male QDV on the reservoir using a clean, dry, lint-
free cloth.
2. Dry the female QDV on the H300 or H850 using a clean, dry,
lint-free cloth.
3. Check the reservoir contents indicator to make sure there is
enough liquid oxygen for the filling process.
4. Make sure the H300 or H850 FCV is in the off (0) position.
5. Hold the H300 or H850 upright with one hand and position its
female QDV over the male QDV on the reservoir.
6. Place one or both hands on top of the H300 or H850 and press
straight downward. This will lower the unit and properly en-
gage the QDV’s.
7. While holding the unit firmly in this position, pull the vent
valve lever downward into its open position. A hissing sound
will be heard.
8. Maintain a downward pressure on the H300 or H850 with one
hand during the entire filling process.
9. Approximately 20-30 seconds into a fill, close and reopen the
vent valve one or more times to prevent the vent valve from
freezing open.
10. The unit is full when the hissing sound changes in tone and a
dense white vapor is seen coming from the under the shroud
of the reservoir. When this is observed, close the vent valve
by releasing and raising its lever.
11. Hold the handle on the H300 or H850 and push the release
button on the reservoir down until the fill connectors separate.
12. Check the contents indicator scale to make sure that the unit is
filled to the desired level.
Liquid Level Measurement
1. Lift the H300 or H850 by the contents indicator strap.
2. Push the bottom backside of the unit forward to that it is
straight up and down.
3. Observe the green indicator bar that displays the liquid oxy-
gen contents level inside the clear window on the back of
the unit. The window is completely filled with the green bar
when the unit is full.
Operation (Filled with Liquid Oxygen)
1. Push one of the tubes from the dual lumen cannula onto the
top cannula barb on the H300 or H850. Place the other tube
onto the lower cannula barb.
2. Properly position the nasal cannula on the patient.
3. Turn the flow control knob on the top of the unit to the pre-
scribed flow setting. Oxygen flow will begin when a breath is
detected.
4. To stop oxygen flow, turn the flow control knob to a setting of
“0.”
WARNING:
Keep the H300 or H850 upright while drying its
fill connector. Do not turn upside-down.
WARNING:
Do not depress or disturb the plastic poppet in
the center of the reservoir’s fill connector. This will cause an
uncontrolled release of liquid oxygen from the reservoir.
NOTE: Do not depress the release button on the reservoir when
engaging the portable unit.
NOTE: If the H300 or H850 does not separate easily, do not use
force. The units may be frozen together. Allow the units a few
minutes to warm up and they should separate easily.
WARNING:
Do not leave the HELiOS portable unattended
during the filling operation. Excessive liquid oxygen
discharge can occur.
WARNING:
Should there be any leakage from either the
reservoir or the portable after separation, engage the fill
connectors again immediately. Engaging and disengaging
the connectors will help to dislodge any ice crystals that are
present. If major leaking and discharge continues, open the
vent valve of the reservoir to stop the release of liquid oxygen.
WARNING:
Do not touch frosted parts.
WARNING:
Do not use a single lumen cannula or a cannula
longer than 7 ft (213.4 cm).
NOTE: On the H850, Continuous flow settings are designated
by the letter “C,” and demand flow settings are designated by
the letter “D.” On the H300, all settings of 1.0 and above are
demand flow only.
WARNING:
The fill connectors must be clean and dry before
filling the H300/H850. Moisture on the fill connectors can
lead to leakage of liquid oxygen. Moisture can also cause the
units to freeze together, and can lead to malfunctions of the
portable and reservoir.
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