Maintenance 171
9. Ensure that the center nozzle (yellow-labeled overflow nozzle) is in liquid, without
overflowing the tray.
10. Repeat step 5, to thoroughly clean the WUD/DWUD lines with wash solution.
NOTE: As an aid to cleaning the aspiration lines, manually lift the WUD/DWUD
wash head in and out of the cleaning solution to introduce air into the lines.
11. When the operation mode returns to READY, lift the WUD/DWUD wash head out of
the tray and place it on top of the WUD/DWUD assembly.
12. Using a lint-free cloth, carefully clean the stainless steel nozzles of the WUD/DWUD
wash head.
13. Remove, empty, and rinse the tray to remove any residual cleaning solution, then
place it on paper towels under the WUD/DWUD nozzles.
14. Place the WUD/DWUD wash head into the tray, then fill the tray with
150 mL of deionized water.
15. Repeat step 5 twice to flush out the cleaning solution with deionized water.
16. When the operation mode returns to READY, move the WUD/DWUD wash head on
top of the WUD/DWUD assembly and secure it by tightening the 4-mm captive hex
screw.
17. Remove the tray and paper towels from the system.
18. Repeat this procedure from step 2 for the other wash head, if needed, and then
proceed to step 19.
19. Exit the JEOL Maintenance window.
20. Run a Startup Wash (WASH3) procedure on the system, then verify proper hydraulic
operation and mechanical alignment of the WUD/DWUD assemblies during the
Startup Wash.
21. Run your laboratory’s quality control material and verify the results are within
acceptable ranges.
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