12.2
Yearly maintenance
About yearly maintenance
Preventive maintenance should be performed on a yearly basis by qualified service
personnel authorized by GE Healthcare. Different service agreements are available.
Contact your GE Healthcare representative for more information (contact information
on back cover).
Although the user is not normally involved in long-term, periodic maintenance, there are
a few tasks that can be checked by the user if so desired:
•
Change the air filter.
•
Calibrate the pressure sensors.
It is important that the user is always attentive about the status and operation of the
equipment. The cause of any abnormal behavior or aberrant noise should be examined
and removed. If the problem is non-trivial, contact your local GE Healthcare representa-
tive.
Sensors
Sensors are checked and, if necessary, changed by service personnel as part of the
yearly service. Should a warning be displayed in UNICORN concerning one of the sensors,
please contact GE Healthcare (contact information on back cover).
Calibrating flow meter
Flow readings that differ from zero under no flow conditions (e.g., when system is in its
End state), and discrepancies between calculated and actual liquid consumption, indicate
a poorly calibrated flow meter.
Flow meter calibration is a very simple procedure:
Action
Step
Make sure the flow kit is filled with liquid and that ÄKTA ready is in End mode.
1
In the ÄKTA ready System Control module, on the System menu, click Cali-
brate. In the Calibrate dialog box select FlowCalib.
2
Start calibration by clicking Start Calibrate.
3
ÄKTA ready Operating Instructions 28960345 AD
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12 Maintenance
12.2 Yearly maintenance
