Pressure Sensor - GE AKTA start Maintenance Manual

4.5

Pressure sensor

Error messages
Error code Description
501 Overpressure
502 Pressure sen-
sor failure
ÄKTA start Maintenance Manual 29060308 AD
Possible cause
Blockage in the tubing,
•
valves or in the column.
Improperly selected Flow
•
rate.
Wrong pressure setting used
•
for chosen application.
The sensor is not connected or
not calibrated.
4 Troubleshooting

4.5 Pressure sensor

Action
Check tubing and valves by
•
disconnecting one at a time
starting from the Fraction
collector going backwards
towards the Pump. When
pressure is released the
blockage has been found,
clean or replace tube to re-
solve the issue.
Clean the column/separa-
•
tion media with suitable solu-
tion (1 M NaOH) or replace
the column with a new one.
Check the specification and
•
pressure of the columns for
correct flow rate.
Perform Zero offset.
•
Contact a GE Service Engi-
•
neer.
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