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| NG C820 0 AN D PGC1000 US ER MAN UA L | 210 1510MNAH
Figure 10-19: Primary Component Side Digital Controller Board
10.21 Replace frit filters
When replacing the filter as part of a regularly scheduled maintenance plan, it will most likely not
require that the sample lines be removed from the external plate. When replacing the filters as a
troubleshooting measure, remove the sample input lines and use compressed air to clear the
pathway. These instructions contain steps for the worst-case scenario.
To replace the filters:
1.
On the Analyzer Operation screen, click
Hold
under Next Mode. When the device completes the
current cycle and enters hold, continue to the next step.
2.
Collect data from the device.
3.
Back up the configuration files following the instructions detailed in section
.
4.
Turn off all the sample streams, calibration gas and carrier gas.
5.
Using a 7/32” hex wrench, loosen and remove all 8-¼” hex socket screws (see
6.
If space permits, lift the external plate away from the internal plate and view the frit filters. If
space does not permit lifting the plate away enough to view the filters, remove the sample
input lines and the carrier and calibration gas lines.
