GE AKTA avant - Page 398

Possible cause and actionProblem
•
Leaking connection and/or crystallized material
around a connector
Unscrew the connector and check if it is worn or incor-
rectly fitted. If so, replace the connector. Gently finger
tighten the connector.
Leakage around a con-
nector
•
Air trapped in the pump heads
•
Partially blocked solvent filters
•
Leaking connections
•
Piston seal leakage
•
Check valve malfunction
•
Piston damaged
See Examples of pump pressure curves, on page 400
for examples of pump pressure curves.
Erratic pump pressure
•
The cable between the pump and the ICU is not
connected.
Contact Service.
•
A fuse in the instrument ICU is broken.
Contact Service.
The pump is not found
by the instrument
•
The air intake on the rear or on the left side of the
instrument is covered
Make sure that none of the air intakes on the instru-
ment are covered.
•
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 pump is too
high
398 ÄKTA avant User Manual 29035184 AE
8 Troubleshooting
8.6 Troubleshooting: Pumps