Thermo Scientific Dionex, Operator'S Manual

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Dionex Integral Systems Operator’s Manual
126
Doc. 065250-06 03/2020
12. Open the waste valve and turn on the pump. Allow the pump to run until no
more bubbles can be seen exiting the waste line. Close the waste valve.
13. With the pump still running, check for leaks from the check valves. Tighten a
check valve a little more only if it leaks.
14. Turn off the pump.
To clean the check valves:
1. Follow Step 1 through Step 6 in the check valve cartridge replacement
procedure to remove the cartridges from the valve housings.
2. Place the check valve housings and cartridges in a beaker with methanol.
Sonicate or agitate the parts for several minutes.
3. Rinse each check valve housing and cartridge thoroughly with filtered and
deionized water.
4. Follow Step 7 through Step 13 in the check valve cartridge replacement
procedure to reinstall the check valves.
10.3 Replacing Pump Check Valves
These instructions apply to the dilution pump and the stepper motor loading pump
(P/N 068561, both pumps).
If a check valve fitting is securely tightened but allows leaks despite this, the
check valve is defective and must be replaced.
Follow the instructions in Section 10.2 to remove the defective check valve, clean
the new check valve (inlet check valve assembly, P/N 047660; outlet check valve
assembly, P/N 047661), and install the new check valve.