Aqua Lung PHODS Technical Manual page 17

SYMPTOM
The OPC emits no sound or start-up
oxygen pulse when turned ON
Start-up sound is heard, but no start-up
oxygen pulse delivered
When using the facemask, no oxygen
pulse on inhalation
Oxygen pulses are delivered, but the
green LED indicates no flow condition
OPC does not trigger on inhalation
TABLE 2: TROUBLESHOOTING GUIDE OPC
POSSIBLE CAUSE
1. Depleted or low batteries.
2. Batteries are not installed properly.
3. Battery contacts dirty or corroded.
4. Oxygen cylinder valve is OFF.
5. Inlet hose (36) / outlet hose (35) is not
connected properly, kinked or is obstructed.
1. Oxygen cylinder valve is OFF.
2. Inlet hose (36) / outlet hose (35) is not
connected properly, kinked or is obstructed.
1. Facepiece not sealed against skin.
2. Outlet hose (35) is not properly connected
or obstructed.
1. Depleted or low batteries.
2. Inlet hose (36) / outlet hose (35), nasal
cannula (32) or facemask is obstructed.
1. Set to ON mode, but below 8,000 ft altitude 1. Switch to R/M or F20 mode to test flow.
2. Breathing shallow or through mouth.
3. Oxygen cylinder valve is OFF or inlet
hose (36) / outlet hose (35) is not connected
properly, kinked or is obstructed.
TREATMENT
1. Replace batteries with a fresh set of
quality Alkaline.
2. Reinstall batteries to correct polarity.
3. Clean battery contacts.
4. Check oxygen cylinder valve is turned ON.
5. Check connections of inlet / outlet tube.
If obstructed, clean or replace tube.
1. Check oxygen cylinder valve is turned ON.
2. Check connections of inlet / outlet tube.
If obstructed, clean or replace tube.
1. Check to ensure facepiece is properly
positioned and sealed against skin.
2. Check outlet tube for proper connection.
If obstructed, clean or replace tube.
1. Replace batteries with a fresh set of
quality Alkaline.
2. Clear obstruction in cannula, facemask
or inlet / outlet tube.
2. Inhale deeply through nose.
3. Check oxygen cylinder is ON. Verify inlet
/ outlet tubes are connected properly, not
kinked or obstructed.
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