3.9 Wash valve
Description
The Wash valve can be switched to divert the flow either to column or to waste.
DescriptionParameter
•
Indicates how many times the valve has switched.
•
When a valve has been replaced, the number of counts
has to be reset to 0.
•
Turn valve switches the valve between the Waste and
Column outlet ports. This option is used for trou-
bleshooting the valve.
Valve switches
Instructions
Follow the instructions below to check if the Wash valve functions properly.
ActionStep
•
Immerse the buffer inlet tubing A in demineralized water.
•
Place the outlet tubing from the Wash valve and the outlet tubing from
the Outlet valve in the waste bottle.
•
Check that:
-
Buffer A is selected in the Buffer valve screen
-
Buffer is selected in the Sample valve screen
1
Start the Pump:2
•
In the Settings and service screen, access Pump:Diagnostics screen.
•
Enter the desired flow rate and then start the Pump by tapping Start
flow.
62 ÄKTA start Maintenance Manual 29060308 AD
3 Maintenance operations
3.9 Wash valve