Corrective actionPossible causeError symptom
Check that the conductivity flow
cell cable is connected properly.
Loose connection of
conductivity flow ca-
ble
Incorrect or unstable
reading
Check that the pump and valves
operate correctly.
Incorrect pump and
valves function
If temperature compensation is
being used, check that the temper-
ature sensor is calibrated, and that
the correct temperature compen-
sation factor is in use.
Incorrect temperature
compensation factor
Check that the column is equilibrat-
ed. If necessary clean the column.
Dirty or incorrectly
equilibrated column
Check the operation of the mixer.
The mixer function is checked by
placing a stirrer bar on top of the
mixer housing. The stirrer bar
should rotate when the system is
in Run mode. The mixer function
can also be checked by running
the installation test.
Incorrect mixer func-
tion
6.3 pH curve problems
Corrective actionPossible causeError symptom
Check that the electrode cable is
connected properly.
Faulty electrode con-
nection
No response to pH
changes
The electrode glass membrane
may be cracked. Replace the elec-
trode.
Damaged electrode
Check that the pH monitor is cor-
rectly connected according to the
ÄKTAprime plus User Manual.
Incorrectly connected
pH monitor
Clean the pH electrode as detailed
in Monitor pH/C-900 User Manual.
Dirty pH electrodeSmall response to pH
changes
If the problem remains, replace the
pH electrode.
ÄKTAprime plus Operating Instructions 28-9597-89 AB 53
6 Troubleshooting
6.2 Conductivity curve problems