GE AKTAprocess, Operating Instructions Manual

Page: 161 / 180

Corrective action Possible cause Error symptom
Check the connections of the UV cell
optical fiber (replace if necessary) Bad UV fiber connections Noisy UV-signal, signal drift
or instability
Clean the UV cell as described in Clean
the UV and conductivity cell, on
page 136 Dirty UV cell
Pressure curve
The table below describes error symptoms that may occur with pressure measurements,
together with possible corrective actions.
Corrective action Possible cause Error symptom
Check that there is sufficient supply
of liquid Gas bubbles passing through
or trapped in the pump Erratic flow, noisy baseline
signal, irregular pressure
trace
Check all connections for leaks
Flush through to clear blockage Blockage or partial blockage
of flow path
ÄKTAprocess Operating Instructions 29-0252-49 AA 161
7 Troubleshooting