GE AKTA avant User Manual page 387

Problem
The Dispenser head
failed to detect a drop
and has switched to
tube change without
DropSync
The internal tempera-
ture of the Fraction
collector is too high
The hot side of the
cooling element in the
Fraction collector is
overheated
ÄKTA avant User Manual 29035184 AE
Possible cause and action
Too high flow rate
•
Decrease the flow rate.
Air in the flow path
•
Check the flow path for air. Fill system and purge
pumps according to Section 5.4 Prime inlets and purge
pump heads, on page 165.
If this error is recurrent, generate a System error report
and contact Service.
Unclean DropSync sensor diode windows
•
Clean the DropSync sensor diode windows. See Sec-
tion 7.6.4 Clean built-in fraction collector, on page 301.
If this error is recurrent, generate a System error report
and contact Service.
High ambient temperature
•
If the ambient temperature is too high the target
temperature in the Frac chamber cannot be reached.
Decrease the room temperature.
The temperature control function is turned off
•
In the System Settings dialog box, check the settings
for the temperature control function (Fraction collec-
tor:Temperature).
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 fan on the back side of the instrument is blocked
•
Switch off the instrument. Remove the obstruction.
Restart the instrument when the temperature has
decreased.
Mechanical error
•
Switch off the instrument until the temperature has
decreased. If this error is recurrent, generate a System
error report and contact Service.
8 Troubleshooting
8.5 Troubleshooting: Fraction collector
387