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8. Allow the instrument to complete the High Voltage Conditioning and Check Tune process
before proceeding. Once the tune process has completed, convert the system back to Chip
Cube mode.
9. Remove the currently installed spray shield and capillary cap. Store them in a clean, lint
free bag.
10. Before installing the new spray shield assembly, confirm that the two pan head screws
securing the end plate are not loose. Once the new chip cube spray shield is installed,
access to these two screws is not possible. Thread the spray shield assembly with contact
spring onto the End Plate. Make sure to thread the spray shield completely onto the End
Plate. Otherwise, the spacing between the Spray Shield and Counter-Electrode will not be
correct.
11. The new spray shield assembly will now appear as the picture below.
Set the Holey Counter Electrode Distance
CAUTION
This procedure will be performed with the HPLC Chip Cube Interface
installed. Make sure that the instrument is in either Standby or Off.
Otherwise, the Spray Chamber High Voltage Electronics will be
energized and present a shock hazard.
Page 16 of 33
18 July 2011
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