Service Manual 79
675-120 Revision C November 2004
Appendix A- Oxygen Leak Test
Oxygen Leak Test
This test will check for leaks within the enclosure.
Test equipment needed:
Calibrated oxygen analyzer
1. Connect the driver to the air and oxygen supplies. Use adaptors to couple to the
customer-specified gas block on the driver.
2. Connect the oxygen analyzer sampling tube to the driver by replacing the M6 Pan Screw
(Item 31, 675-002) with an M6 fitting. Before operating the driver, take an initial O2
concentration reading and record on TIR-004. Plug the fitting.
3. Switch the power on. The next step will setup the unit to operate in Bi-phasic mode for
any Comprehensive or Plus version.
4. Set the NCPAP (Low Pressure) Flow Meter to about 8 LPM then push the softkey button
below the left flowmeter icon (Figure 1).
Figure 1
5. Set the %O2 to 100% then push the softkey button below the blender icon.
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