206 Agilent 7100 Capillary Electrophoresis System User Manual
8Maintenance
Cleaning the Electrodes, Pre-punchers and Insulation Plate
Cleaning the Pre-punchers
• Check for damaged or bent tips before cleaning the pre-punchers.
If the tips are damaged, replace the pre-punchers.
• Check for grooves in the funnels of the pre-punchers.
Grooves are a sign of improper alignment of the electrodes and may lead to
improper sealing. Improper sealing may lead to problems during flushing,
injection or CEC applications. Use the alignment center of the Lab Advisor
to align and check the installation. If the funnel shows grooves, replace the
pre-punchers.
1 Flush the pre-punchers with water. Watch for salt crystals. All salt crystals
must be removed. Take particular care with the teflon tube connector.
Figure 65 Flushing pre-punchers
2 Flush the pre-punchers with water and isopropanol.
3 Use compressed air to dry the pre-punchers and remove all traces of liquid.
Do not forget to dry the connected tubes as well.
Risk of injury due to sharp tips
The pre-punchers have very sharp tips.
• Be careful when touching the tips of the pre-punchers.
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