Maintenance and Troubleshooting | 6-17
Filterblock Maintenance
The Membrane Filters in the Filterblock Assembly should be inspected
periodically for signs of contamination or damage.
Clean the Filterblock:
• If alarms that indicate the optical paths show signs of contamination
are displayed, such as:
- f H2O Optics (SCode 32)
- f HC Optics (SCode 64)
• If there is evidence of baseline deviations (see “Baseline Settings” in
the Preventive Maintenance Schedule in this chapter).
• Every 6 months (minimum).
• Each time you clean the Measuring Cell.
Replace parts in the Filterblock:
• Annually.
• If, while cleaning the Filterblock, the Membrane Filters are found to
be damaged (are creased, have holes, or are transparent) or severely
contaminated (with liquids, oils, or waxes).
See Chapter 7 for
replacement part ordering
numbers.
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