GE AKTAprime plus, Руководство по эксплуатации

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Corrective action Possible cause Error symptom
Replace the pH electrode. Problem with the
electrode pH values vary with
varied back pressure
6.4 Pressure curve problems
Corrective action Possible cause Error symptom
Check all connections for leaks. Air bubbles passing
through or trapped in
the pump Erratic flow, noisy
baseline signal, irregu-
lar pressure trace
Check that there is sufficient eluent
present in the reservoirs.
Use degassed solutions.
Purge the pump.
Follow the instructions in
ÄKTAprime plus User Manual.
Clean the valves according to
Pump P-920 User Manual. Inlet or outlet check
valves not functioning
correctly
Clean the valves according to
ÄKTAprime plus User Manual.
Replace the piston seal according
to the instructions in .ÄKTAprime
plus User Manual. Piston seal leaking
Flush through to clear blockage. Blockage or part
blockage of flow path
If necessary, replace tubing.
Check inlet tubing filter. It can be-
come clogged if unfiltered buffers
or samples are applied. See instruc-
tions for flushing through at the
end of the run in ÄKTAprime plus
User Manual.
56 ÄKTAprime plus Operating Instructions 28-9597-89 AB
6 Troubleshooting
6.3 pH curve problems