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Note: For push-on style connector, hold the unit in
place throughout the fill.
6. Open the vent valve to begin filling your Spirit
should hear some oxygen escaping; do not worry. The
hissing sound you hear is perfectly normal.
7. You may also see vapor around the connection. This is
normal and is due to the great difference in
temperature between the liquid oxygen and the warm
air surrounding the units.
8. When the unit is full, close the vent valve. You can tell
that the unit is full when the hissing sound changes in
tone, and some liquid comes out of the vent line.
Note: Closing the valve after a nearly continuous
stream of liquid is discharging fills the Spirit
completely, but wastes some liquid oxygen.
. You
®
most
®
10
Spirit
®
Step 6
ortable
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