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Maintenance and Troubleshooting | 5-23
Replacing the Infrared (IR) Source Assembly
The typical life expectancy of the Infrared Source is 3–5 years of continu-
ous operation. However, if the Infrared Source begins to exhibit signs of
degradation prior to the 3-year mark, replace the Infrared Source Assem-
bly (Figure 5-3.2). See Figure 5-1 for the location of this assembly in the
Electronics Enclosure.
Refer to “Optical Bench Assembly Spare Parts” in Chapter 6 for reor-
dering part numbers.

NOTE
Figure 5-3.2.
Infrared (IR) Source
Assembly (100-2847).
To replace the Infrared Source Assembly:
Hazardous Locations
Before proceeding, test the area around the analyzer for flammable
gases. If an explosive gas atmosphere is present, do not power down
the analyzer or any alternate power sources that supply power to the
analyzer components. Proceed only when the area is found to be safe.
1. Manually Zero the analyzer for 10 minutes.
2. After the Zero is complete, close the Sample Line and then the Vent
Line Shut Off valves (in the Oven/Sample System Enclosure) to isolate
the analyzer from the sample stream.
!
WARNING