Teledyne 300E - Maintenance Procedures; Replacing the Sample Particulate Filter; Figure 9-1: Replacing the Particulate Filter

Model 300E Carbon Monoxide Analyzer
Instruction Manual
MAINTENANCE SCHEDULE & PROCEDURES
P/N 04288 REV: A 149
9.3. Maintenance Procedures
The following procedures are to be performed periodically as part of the standard
maintenance of the Model 300E.
9.3.1. Replacing the Sample Particulate Filter
The particulate filter should be inspected often for signs of plugging or
contamination. We recommend that when you change the filter, handle it and the
wetted surfaces of the filter housing as little as possible. 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 M300E’s hinged front panel and unscrew the knurled retaining ring
on the filter assembly.
Figure 9–1: Replacing the Particulate Filter
3. Carefully remove the retaining ring, PTFE o-ring, glass filter cover and filter
element.