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23
PHODS PRE-FLIGHT CHECKLIST
Check - Oxygen Cylinder / OPC
1. Verify all PHODS components are present.
2. Install two new alkaline AA batteries in the OPC. Ensure the battery compartment door is secure.
3. Slowly open the cylinder valve and check that the dial indicator reads in the green.
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4. Turn the OPC mode-selector knob to the ON position. The OPC green
LEDs will produce
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a series of flashes and the audible alarm will sound. If the LEDs continue to flash rapidly and / or the
audible alarm continues after the initial series, refer to the Troubleshooting Guide section of this manual
to determine its possible cause.
5. Verify the cylinder pocket is secured to the vest properly.
6. Verify the OPC pocket is secured to the vest properly.
7. Install the cylinder and regulator into the cylinder pocket and secure with the fasteners.
8. Install the OPC into the OPC pocket.
9. Route the 30" OPC inlet hose through MOLLE straps, over the shoulder and connect the 90° QD
fitting into the CPC connector on the regulator. Ensure the QD fitting "clicks" into place.
10. Route the OPC outlet hose through the MOLLE straps from the upper chest to the OPC pocket.
Ensure the blue tip of the outlet hose has sufficient length to be pushed into the OPC.
11. Verify the MOLLE attachment on the OPC outlet hose is attached to the vest and the OPC inlet hose
is secured in the hook and loop fastener.
12. Push the OPC outlet hose into the 6mm connector on the OPC.
13. Select helmet mounted delivery method.
Check - Helmet / Nasal Cannula
1. Ensure the nasal cannula is mounted to the helmet securely and the 90° connector is pointing down
and out the rear of the helmet.
2. Verify the nasal cannula has a removable nose piece installed.
3. Push the open end of the coiled hose into the 90° connector on the index tube until it stops.
4. Don the helmet and push the QD fitting on the coiled hose into the CPC connector on the outlet hose
that is attached to the vest.
5. Position the nasal cannula into the nose and inhale while observing the OPC in either the F20 or R/M
position. The green
LED should flash once indicating a properly functioning unit.
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6. To simulate the flow-fault alarm, disconnect the 90° QD fitting from the CPC connector on the regulator
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and inhale. The green
LED should produce a constant flashing for 2 seconds. This indicates a flow-
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fault. Reconnect 90° QD fitting.
7. The system is verified functional.
8. Remove the nasal cannula from the nose, disconnect the coiled hose from the outlet hose CPC
connector on the vest and remove the helmet. Change the mode on the OPC by turning the mode-
selector knob to the ON position; the unit is ready for use. When not breathing on the device the
green
LED with will flash 4 times indicating no breaths have been taken in 30 seconds.
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