multi N/C 2100S (duo, pharma)
Maintenance and care
69
Set the NPOC purge flow as follows:
Figure 32Grounding conductor connection on the side wall
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Open the left side wall of the analyzer. Push the accessory modules to the side if nec-
essary. Do not kink any connection hoses.
– Unscrew the four attachment screws. The screws are captive and remain attached
to the wall.
– Remove the protective grounding. Set the side wall aside safely.
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Open the window of the same name with the Instrument |Device control menu op-
tion.
Figure 33Setting the purge flow
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Select the Purging option in the list field.
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Select the purge time in the Time field in the 1 to 900 s range.
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For sample feed with autosampler: In the Rack position field, select any position on
the sample tray to monitor the purge flow at.
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Place a sample vessel with ultrapure water at this position.
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For manual sample supply: Insert purge hose 15 in a sample vessel filled with ultra-
pure water.
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Click the [Start F2] button.
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Unscrew the adjustment screw on the NPOC needle valve.
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Set the desired NPOC purge flow:
– Increase the NPOC purge flow: Turn the needle valve to the left.
– Decrease the NPOC purge flow: Turn the needle valve to the right.
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Check the flow indication in the System state window when doing this. The current
NPOC purge flow is displayed under Purge.
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Screw the adjustment screw on the needle valve back in.
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Close the side wall.
– Connect the protective grounding to the left side wall.
