Thermo Scientific EASY-nLC 1200 Troubleshooting And Maintenance Manual page 158

7
Troubleshooting
Troubleshooting Tips
136 EASY-nLC 1200 Troubleshooting & Maintenance Guide
Figure 115 shows the flow and pressure traces for pump B for a system with a leak upstream of
flow sensor B. The measured flow rate is negative rather than 0 nL/min during the column
equilibration and sample loading steps.
Figure 115. Flow trace for pump B when there is a leak upstream of flow sensor B
Negative flow rate during the
column equilibration and sample
loading steps
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