Metek 933 - Source Lamp Replacement; When Do Source Lamps Need to be Replaced

Maintenance and Troubleshooting | 6-21
Source Lamp Replacement
The typical life span of the source lamps is approximately 9–12 months of
continuous operation. However, a source lamp can exhibit signs of degra-
dation after 5–6 months.
When Do Source Lamps Need to be Replaced?
Possible signs of degradation or indications of Source Lamp failures are:
• Unstable lamp voltage (check voltage levels on Optical Bench Data
tab).
• Unstable analyzer output under Zero Gas conditions (“Warning Zero
Drift” alarm is displayed on the Status tab).
• The “Warning ALC” alarm is displayed on the Status tab.
Figure 6-6.
Error Conditions,
Status tab.
Figure 6-5.
Optical Bench Data
tab.