110 Maintenance and Service 083730300A DCN8101
5.6 MAINTENANCE PROCEDURES
The following procedures are to be performed periodically as part of the standard
maintenance of the T300.
5.6.1 REPLACING THE SAMPLE PARTICULATE FILTER
The particulate filter should be inspected often for signs of plugging or contamination.
We recommend that the filter and the wetted surfaces of the filter housing are handled as
little as possible when you change the filter. Do not touch any part of the housing, filter
element, PTFE retaining ring, glass cover and the o-ring.
To change the filter:
1. Turn OFF the analyzer to prevent drawing debris into the instrument.
2. Open the T300 Analyzer’s hinged front panel and unscrew the knurled retaining ring
on the filter assembly.
Figure 5-6. Sample Particulate Filter Assembly
3. Carefully remove the retaining ring, PTFE o-ring, glass filter cover and filter element.
4. Replace the filter, being careful that the element is fully seated and centered in the
bottom of the holder.
5. Re-install the PTFE o-ring (with the notches up), the glass cover, then screw on the
retaining ring and hand tighten. Inspect the seal between the edge of filter and the
o-ring to assure a proper seal.
6. Re-start the Analyzer.
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