Gas Leak Checks; Gas Manifold Leak Check - GE Sievers InnovOx Operation And Maintenance Manual

Chapter 9: Troubleshooting

Gas Leak Checks

These tests help locate leaks that may exist in the Analyzer.
When you press the Gas Leak button, the Gas Leak Check screen (see Figure 69 on page 195) appears. The
current pressure at pressure sensor PS4-GS appears on the right side of the screen, and the timer initially is set
to 00:00 (min:sec).
Before starting the Gas Leak Checks, ensure either that the gas inlet to the Analyzer is connected to a source of
compressed gas (10-20 psig).
Before starting the Gas Leak Checks, plug the coiled tube (from the Accessories Kit) onto the left end of the NDIR.
This prevents leakage of vent gas out of the NDIR.
There are five leak tests (Figure 69). They should be performed in the sequence described below.

Gas Manifold Leak Check

This test checks for leaks in the gas lines between valve V2-GS and V7-SH, V1-R, and V2-R. It also checks for
leaks in the NDIR vent gas line, including the NDIR end caps. These areas are highlighted in Figure 70.
• Press the Gas Manifold button to start the test.
• The following valves are closed: V1-R, V2-R, V3-R, V4-R, V5-R, V6-R, V7-R, and V7-SH.
• The Gas Control Module pressurizes the lines using the optional air pump P1-GS or the pressurized gas
source for 10 sec., then valve V2-GS closes to trap that pressure in the area being tested. During this
10-sec. pressurization period, the timer remains at 00:00.
GE Analytical Instruments ©2013
Figure 69: The Gas Leak Check Screen
195 of 238 DLM 68100-06 EN Rev. A