You can only replace the VICI valve where a VICI valve drive is installed. To install the VICI valve drive, contact your local Thermo Fisher Scientific Technical Support. For an overview of the VICI switching valve, see Column Switching Valve Overview.
Prerequisite
The VICI valve drive and the adapter frame are installed (performed by service engineer).
When
Switching valve is defective
To change between different valve types
Parts required
VICI switching valve as required by the application
Tools required
Screwdriver, Torx T10
Preparations
Turn off the pump flow.
Disconnect all liquid lines connected to the VICI switching valve.
Do not yet remove the fitting plugs that cover the valve ports on the replacement switching valve.
To remove the installed valve pod from the valve flange, screw a fitting plug into a valve port and firmly pull out the valve pod using the fitting plug.
If no Valve is Installed after Replacement
Loosen the 4 screws of the adapter frame.
Remove the adapter frame.
Place the cover plate onto the valve opening.
Tighten the 4 screws of the cover plate.
Installing the VICI Switching Valve
Align the two pins on the back of the valve lock ring with the matching openings on the valve flange.
Press the valve pod to the valve flange.
To align the axis with the valve pod, press and hold the VALVE LEFT button or the VALVE RIGHT button on the keypad depending on the valve position. The catch valve function is activated and you can release the button.
When the axis is aligned, the valve pod snaps into the valve flange.
Remove the fitting plugs that cover the valve ports.
Connect the liquid lines as required by the application.
Configure the VICI switching valve in the chromatography data system.
Inspect the valves visually for leakage.
Run the script: D02 - Test System Tightness (What Should Be Tested = Sampler). This script also tests the column switching valves for leakage.