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Preventive Maintenance
Tools Required
Cleaning the External Surfaces of the Detector
Thermo Scientific
In addition to standard practices for laboratory cleanliness, Thermo Fisher Scientific
recommends the following preventive measures:
• 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 the same areas.
• Thoroughly flush all plumbing (including the flow cell) after each use. Remember that
water is the recommended "last contact" liquid.
Keep the flow cell absolutely clean to maintain low-noise operation. Organic films and
residues are major causes of noise. Also consider the analytical solutions passing through
the flow cell. If they pose a possible contamination problem, flush the flow cell with water
or methanol. If this does not remove the contamination, clean the flow cell with a dilute
solution of nitric acid, followed by a water rinse.
• Thoroughly flush and clean all peripheral plumbing, pumps, and so on, before
connecting them to the flow cell.
• To avoid particulate contamination and fluid path blockage, maximize the use of
filtration.
• Avoid leaving buffers standing in the flow cell for long periods. Plan your use to minimize
standing time between runs.
Performing routine maintenance on the UV/Vis detector requires these tools:
• A narrow-tip, flat-bladed screwdriver (2 mm wide)
• #2 Phillips screwdriver
• 1/4 in. open-end wrench (supplied)
• 1/8 in. ball-end hex screwdriver (supplied)
• 3/32 in. ball-end hex screwdriver (supplied)
• 9/64 in. ball-end hex screwdriver (supplied)
Keep the external surfaces of the detector clean and dry. To clean the outside of the detector,
wipe it with a dust-free cloth or a damp cloth (moistened with water only) to remove dirt or
stains.
3
Routine Maintenance
Preventive Maintenance
Accela UV/Vis Detector Hardware Manual
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