Oxygen Concentrator
PN 14940837 B — 26
Troubleshooting Table
Symptom
Possible Cause
Corrective Action
No Oxygen Flow
1
Oxygen Tubing Kinked/Leak-
ing
Check the nasal cannula and any extension tubing being used for kinks, blockages, or leaks.
Verify that all tubing connections are secure. Replace and tubing if necessary.
2
Humidifier Bottle Restriction
(if used)
Check the humidifier bottle and tubing for blockages or restrictions.
3 Flow Meter Closed (off)
Inspect the flow meter and verify that the ball is not at the bottom of the meter. If it is, turn
the knob to increase the flow. Replace the flow meter if necessary.
4
Internal Tubing Kinked/Leak-
ing
Check all internal tubing for leaks. Verify that there are no leaks and that all connections are
secure. Replace any tubing or parts if necessary.
5 HEPA Filter Restriction
Inspect the HEPA filter for a blockage. Replace if found to be clogged.
6 Compressor Malfunction
Verify that the compressor is operating properly. Replace the compressor if necessary.
Low Or Fluctuat-
ing Oxygen Flow
Rates
1
Oxygen Tubing Kinked/Leak-
ing
Check the nasal cannula and any extension tubing being used for kinks, blockages, or leaks.
Verify that all tubing connections are secure. Replace any tubing if necessary.
2
Humidifier Bottle Restriction
(if used)
Check the humidifier bottle and tubing for blockages or restrictions.
3 Poor Concentrator Location
Verify that the concentrator is in a well-ventilated location and that air flow into the device
is not impeded.
4 Intake Filter Restriction
Inspect the intake filter for a blockage. Replace if found to be clogged.
5 Bacteria Filter Restriction
Inspect the HEPA filter for a blockage. Replace if found to be clogged.
6
Internal Tubing Kinked/Leak-
ing
Check all internal tubing for leaks. Verify that there are no leaks and that all connections are
secure. Replace any tubing or parts if necessary.
7 Flow Meter Malfunction
Verify the functionality and accuracy of the flow meter. Replace if necessary.
8 Regulator Malfunction
Check the outlet pressure. If it is out of the acceptable range, adjust or replace the regula-
tor.
9 Compressor Malfunction
Verify that the compressor is operating properly. Replace if necessary.
Low Oxygen
Concentration
1 Intake Filter Restriction
Inspect the intake filter for a blockage. Replace if found to be clogged.
2 Bacteria Filter Restriction
Inspect the Bacteria filter for a blockage. Replace if found to be clogged.
3 Poor Concentrator Location
Verify that the concentrator is in a well-ventilated location and that air flow into the device
is not impeded.
4
Internal Tubing Kinked/Leak-
ing
Check all internal tubing for leaks. Verify that there are no leaks and that all connections
are secure. Replace any tubing or parts if necessary.
5 Solenoid Valve Malfunction
Verify the operation of the 4-way solenoid valve. Replace if necessary.
6 Compressor Malfunction
Verify that the compressor is operating properly. Replace if necessary.
7 Sieve Bed Failure
Replace the sieve beds assembly.
Overheating
1 Poor Concentrator Location
Verify that the concentrator is in a well-ventilated location and that air flow into the device
is not impeded.
2 Cooling Fan Malfunction
Verify that the cooling fan is connected properly to the circuit board and check the continu-
ity of the connection. Replace the cooling fan if it is not functioning.
Outlet Pressure
Out of Accept-
able Range (4.3
- 4.9 psi).
1
Internal Tubing Kinked/Leak-
ing
Check all internal tubing for leaks. Verify that there are no leaks and that all connections are
secure. Replace any tubing or parts if necessary.
2 Regulator Out of Adjustment
Adjust the regulator.
3 Regulator Malfunction
Replace the regulator.
4 Sieve Bed Failure
Replace the sieve beds assembly.