ActionStep
In the Settings and service screen, tap Sample valve.4
Result: The Sample valve screen opens.
•
Check that the Valve position Buffer is selected.
•
Tap Turn valve to check that the Sample valve switches between Buffer
and Sample on the Display. There is a click sound when the valve
switches.
•
Check that the flow is delivered from the Buffer inlet or the Sample inlet
according to the selected valve position.
Note:
The Sample valve is by default in the Buffer position (the liquid is delivered
from the Buffer inlet).
5
Visually inspect the flow at the outlet. If the water is not flowing properly,
check the following and fix accordingly:
6
•
Is there a blockage in the tubing?
•
Are the connectors tightly connected?
Stop the Pump:7
•
In the Settings and service screen, access Pump:Diagnostics screen.
•
Stop the Pump by tapping Stop flow.
If these checks indicate that the valve is faulty, replace the Sample valve.8
60 ÄKTA start Maintenance Manual 29060308 AD
3 Maintenance operations
3.8 Sample valve
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