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SECTION 3—CHECKING O
2
PURITY
XPO
2
™
14 Part No 1150748
SECTION 3—CHECKING O
2
PURITY
NOTE: Although the XPO
2
offers pulse dose only, the oxygen purity can be checked with a hand
held oxygen analyzer.
NOTE: Oxygen purity should be checked every 4,320 hours.
1. Turn the unit On.
2. Press the “+” button to increase the flow to setting 5.
3. Simultaneously press and hold the “+” and “battery gauge” buttons until the #5 BLUE
indicator light blinks. This is your indication that the unit is now in auto-pulse mode.
NOTE: The unit will remain in auto-pulse mode until it is set to a lower flow setting or is turned
off.
4. Connect a standard hand held oxygen analyzer to the outlet port.
5. Follow the directions provided by the analyzer manufacturer. Some analyzers will
also measure flow and pressure, but only if connected to a continuous flow of oxygen
(so these options are not usable on this pulse only unit).
NOTE: The purity reading may fluctuate slightly due to the pulse flow. It is recommended that you
record a high and a low over a 60 second time period. The XPO
2
is functioning properly when the
purity levels are above 87%, after the 5 minute warm-up period.