224 Agilent 7100 Capillary Electrophoresis System User Manual
8Maintenance
Changing the Lamp
Changing the Lamp
The following procedure is used to replace the deuterium lamp in the
7100 CE instrument. Loss of light intensity over time increases baseline noise,
which may negatively influence the performance of your analysis.
You should consider exchanging the lamp if a drastic increase in the noise
level is encountered which is not caused by any other reason (for example
contaminated slit, something absorbing inside the capillary, etc.) or the lamp
refuses to ignite. Generally the light intensity drops by 50 % of its original
value after approximately 2000 hours of operation. We suggest that you check
the lamp intensity before you change the lamp to be sure the noise increase is
not due to other reasons (air bubbles inside the capillary, alignment interface
or detection window contaminated).
Please use the Intensity Test in the Detector Test suite in the Lab
Advisor/Instrument Utilities software to determine the lamp intensity. Check
the Lab Advisor/Instrument Utilities software to read out the lamp tag
information on the current lamp lifetime.
It may happen that a hot lamp refuses to ignite the first time. Please wait until
the lamp has cooled down.
Only lamps provided by Agilent Technologies are supported in the 7100 CE instrument. The
lamp tag stores various data and details on the ignition program of the deuterium lamp. A
lamp without a tag will fail to ignite and could lead to instrument errors.
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