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4
Maintenance
Recommendations for Routine Maintenance
Recommendations for Routine Maintenance
Preventive Maintenance
34
Surveyor RI Plus Detector Hardware Manual
Table 6
lists recommendations for routine maintenance of the Surveyor RI Plus Detector. Use
this table as a basis for developing your maintenance program in accordance with the practices
at your company.
Table 6. Recommended Routine Maintenance
Procedure
Exterior Detector Housing Cleaning
Flowcell Cleaning
Lamp Replacement (performed by a Thermo Fisher
Scientific Service Representative)
*
Good Laboratory Practices dictate that the flowcell should be flushed with clean solvent after every use. This will
greatly reduce the frequency with which you need to clean it.
The detector does not require specific maintenance to be performed at periodic time intervals.
Preventive maintenance consists primarily of taking the necessary action, as required, to
maintain the instrument and its flowcell in the best condition.
In addition to standard laboratory cleanliness practices, the following preventive measures are
recommended:
• Use only high purity liquid in all "wetted surface" contact areas for the analysis, for
flushing and for cleaning. Use only high purity gases when drying same.
• All peripheral plumbing, pumps, and so on, should be thoroughly flushed and cleaned
before connection to the flowcell.
• Avoid particulate contamination and fluid path blockage by maximum use of filtration.
• Avoid leaving buffers standing in the cell for long periods. Plan use to minimize standing
time between runs.
• Thoroughly flush all plumbing (including the flowcell) after each use, remembering that
water is the recommended "last contact" liquid.
Keeping the flowcell absolutely clean is necessary to maintain low-noise operation.
Organic films and residues are major causes of noise. Consideration should also be given
to the analytical solutions passing through the flowcell. If they pose a possible
contamination problem, flush the flowcell with water or methanol. If this does not
remove the contamination, clean the flowcell with a dilute solution of nitric acid,
followed by a water rinse.
Interval
As needed
*
As needed
Every 4.5 years or as required
Thermo Scientific
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