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7.4.1
Check the flow restrictor
Maintenance interval
Check the back pressure for the flow restrictor every month.
Instruction
Follow the instruction to check the back pressure of Flow restrictor FR-902.
Action
Step
Immerse the piece of inlet tubing marked A1 in distilled water, and immerse
the piece of tubing from Outlet valve port W in a waste container.
1
In the System Control module, on the Manual menu, click Execute Manual
Instructions.
2
Result: The Manual instructions dialog opens.
In the Manual instructions dialog:
3
•
Select Flowpath:Injection valve, and select Manual Load. Click Insert.
•
Select Flowpath:Column valve, and select By-pass. Click Insert.
•
Select Flowpath:pH valve, and set the pH electrode to Off-line and the
Restrictor to In-line. Click Insert.
•
Select Flowpath:Outlet valve, and select Out-Waste. Click Insert.
•
Select Pumps and Pressures:System flow and set the Flow rate to 3.0
ml/min. Click Insert.
•
Click Execute.
Result: A system flow of 3.0 ml/min starts.
Note the PreC pressure displayed in the Run Data pane.
Tip:
If PreC pressure is not showing, click the Customize icon. In the Customize
dialog, under the Run Data Groups tab, select to view PreC pressure.
4
In the Manual instructions dialog:
5
•
Select Flowpath:pH valve, and set the pH electrode to Off-line and the
Restrictor to Off-line.
•
Click Execute.
Note the PreC pressure displayed in the Run Data pane.
6
ÄKTA avant User Manual 29035184 AE
279
7 Maintenance
7.4 Monthly maintenance
7.4.1 Check the flow restrictor
Summary of Contents for AKTA avant
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