Possible cause and actionProblem
•
Hot surroundings
Decrease the room temperature. Maximum operating
temperature is 35°C.
•
Hardware error
Switch off the instrument and wait until the tempera-
ture has decreased. Restart the instrument. If this error
is recurrent, generate a System error report and con-
tact service.
The internal tempera-
ture of the fraction col-
lector is too high
•
To high flow rate for DropSync
Decrease the flow rate or disable DropSync.
•
Air in the flow path
Check the flow path for air. Fill system and purge
pumps. If this error is recurrent, generate a System
error report and contact service.
•
Unclean DropSync sensor
Clean the drop sensor photocell located above the
tube sensor with a damp cloth.
•
The tubing is not correctly mounted in the tubing
holder nut
Check that the tubing is correctly mounted, see Con-
nect tubing to the ÄKTA avant instrument, on page 134.
The fraction collector
failed to detect a drop
and has changed tube
without DropSync.
•
The fraction collector movement is blocked
Make sure that the fraction collector can move and is
free from obstructions.
The tube sensor has
not detected a new
tube.
•
The flow rate is too high
Reduce the flow rate.
•
The fraction volume is too small
Collect larger fractions.
•
Too many fraction collector instructions have been
sent
Wait for a while and try again.
The delay queue is full
or there is a tube
change overload.
ÄKTA avant User Manual 29035184 AE 395
8 Troubleshooting
8.5 Troubleshooting: Fraction collector
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