Philips EverFlo Q Service And Technical Reference Manual page 21

6.3.4 SYSTEM PRESSURE TEST
The system pressure test is used to verify the proper operation of the EverFlo Compressor and Sieve Canister
Assemblies.
If pressures are not within the normal operating pressure, it does not necessarily indicate an issue
with the concentrator. The Final Test located in the Testing Chapter of this manual is the only test
to be used when determining a known good EverFlo Concentrator from a Concentrator requiring
repair.
1. Run the unit with the front and rear cabinets in place for a minimum of ten minutes.
2. Set the flow to 5 LPM (1 LPM for units equipped with pediatric flow meters).
3. Turn off the Everflo Oxygen Concentrator.
4. Remove the front and rear cabinets from the unit.
5. Disconnect the yellow pressure tubing from the fitting on the PCA. Using the pressure gauge, "T"
fitting, and pressure tubing supplied with the Concentrator tool kit, connect to the Pressure
Regulator as shown below.
6. Turn the unit on and allow the unit to cycle for at least two (2) minutes to stabilize.
7. Hold the pressure gauge in a vertical position.
8. Verify pressures against the table below. This table is a reference guideline for system pressures
and troubleshooting. If a value is measured outside of these ranges, it may not mean the unit has
a fault. If the Outlet Pressure and Outlet Oxygen values are within tolerances, and the unit is not
alarming, the unit should be considered acceptable.
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ECHNICAL NFORMATION
1039055, VER. 06