GE Sievers 900 Series Operation And Maintenance Manual page 214

9. Press the Reagent button and press the Manual button.
10. Press the Acid button and use the number pad to set the acid flow rate to 0.
11. Press the Oxid button and use the number pad to set the oxidizer flow rate to 0.
12. Press the Menu button.
The first task is to drain the DI side of the fluidics.
13. Open the Analyzer case. Open the reagent enclosure cover by loosening the set screw.
14. Remove the acid and oxidizer reagent cartridges. For each cartridge, push the red button
to close the valve and then loosen the PEEK nut and disconnect the cartridge from the
reagent syringe tubing. (Store your reagents; you may reinstall the reagents when your
Analyzer is returned.)
15. Replace the reagent enclosure cover.
16. Disconnect the Analyzer from the sample source, so air will be introduced into the Analyzer
sample stream. Press the Start Analysis button. Let the Analyzer run for approximately 10
minutes, so no significant water remains in the waste line.
17. Press the Stop Analysis button.
18. Turn the Analyzer off with the main power switch.
19. Open the Analyzer case.
20. Locate the water bottle from the Analyzer's accessories kit. Remove the top of the water
bottle and empty out any water in the bottle. Keep the water bottle available.
21. Locate the red resin bed plug from the Analyzer's accessories kit.
22. Have a paper towel available to absorb water that may leak from the resin bed.
Immediately after performing the next step, you will need to insert the red plug into the
bottom port on the resin bed to prevent additional water from leaking out.
23. Locate the resin bed (see Figure 45 on page 216).
24. Remove the DI water connector from the bottom of the resin bed as follows: rotate the
connector tubing until the small tab is no longer extending through the slot on the set
plate; then, pull the tubing out of the resin bed. After you remove the tubing from the resin
bed, hold the tubing so that the nozzle faces up, to prevent water from leaking.
25. Insert the red plug into the port at the bottom of the old resin bed.
26. Place the water connector tubing into the water bottle (a beaker or flask also can be used).
27. Remove the rubber vent cover from the DI water reservoir. Let the water from the DI water
reservoir completely drain into the bottle. When water stops flowing, remove the tubing
GE Analytical Instruments ©2009 214 of 236 DLM 90488-01 Rev. A