Maintenance
37
5. Carefully pull the bottom block, together with the copper electrode ring, down from the top block.
This should help prevent losing any of the 150 small PVC mixing balls contained within the
copper ring electrode.
NOTE:
During removal, be careful not to lose the O-ring that seals the top edge of the copper electrode
ring to the top block of the flow cell.
6. Pour the PVC balls into a container.
7. Remove and set aside the upper and lower O-ring seals. If they are damaged, replace them.
8. Use medium sandpaper (100 grit) or Scotch Brite pad to shine the inner surface of the copper
electrode ring.
NOTE:
Do not use any commercial abrasive cleaning powders or liquid, as they contain chlorine and
will leave a residual coating that will adversely affect system performance.
NOTE: If the copper electrode ring is excessively scratched or has an uneven surface, it should be
replaced.
9. Inspect the PVC balls for flat spots or dents. Replace any damaged balls.
10. Inspect the flow nozzle orifice for any precipitate buildup or obstructions, and clean if necessary.
11. Inspect the O-rings for damage and replace if needed.
12. Inspect the flushing plug orifice and check for any precipitate buildup or obstructions, and clean
if necessary. Inspect the O-rings for damage and replace if needed.
13. Re-assemble the sample flow cell.
Before Cleaning
After Cleaning
Flow Nozzle
Flushing Plug
Figure 42
Figure 43
Figure 44
FX-1000p