GE Analytical Instruments ©2016 238 of 270 DLM 68100-09 EN Rev. A
Chapter 9: Troubleshooting
To perform the (Check 6) Gas-Liquid Separator, NDIR Filter, NDIR Sample Path and Sparger
Leak Check
1. Ensure that the NDIR is plugged, as described in the Before You Begin section.
2. Pull the pinch valve tubing out of V7-R. Refer to “
Valves” on page 218 for instructions on how to open
the valve to facilitate removal of the tubing.
3. Place a clamp on the Gas-Liquid Separator (GLS) waste line (the tube that extends from the Gas-Liquid
Separator and out of the Analyzer). The GLS will pressurize slightly during this test; ensure that it is
installed correctly and its bracket screw is fastened securely.
4. On the Gas Leak Check screen, press the Reactor Bypass button to start the test. The Analyzer closes
the following valves: V1-R, V3-R, V4-R, V5-R, V7-R, and V7-SH. The Analyzer opens valves V2-R and V6-R.
5. The Gas Control Module pressurizes the lines for 24 sec., and then valve V1-GD closes to trap the
pressure in the area being tested and the system holds for an additional 15 sec. If a major leak is
detected at this time, an "Analyzer failed to pressurize" warning appears and the test will end. During
this 39-sec. pressurization period, the timer remains at 00:00 and "Pressurizing . . ." appears under the
timer.
6. When the system passes pressurization, the leak check begins, the timer starts, and "Testing . . ."
appears under the timer. The test lasts for 60 sec. The test passes if the drop in pressure is <= 2.0 psi.
7. If the test fails, but all previous Leak Tests passed, check the fittings and tubing at the Gas-Liquid
Separator, NDIR Filter, and Sparger.
8. Remove the clamp from the GLS waste tube. Reinstall the pinch tubing into V7-SH.
9. Remove the plug on the NDIR end cap outlet gas line.
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