Maintenance
45
Replacing the Internal Filters
The internal filters should be replaced based on the schedule in Table 4–1 or
when the filter indicator on the main screen changes to red.
1. Turn the instrument off.
2. Remove old filters from the instrument.
Handheld Model
a. Use the enclosed filter removal tool (PN 801668) tool to unscrew
the two filter caps located on the bottom of the instrument.
b. Pull the old filters out of the two filter wells. If filter wells are
visibly dirty, blow out with compressed air.
Figure 4-5: Pull Filters Out of Two Filter Wells (Handheld Model)
c. Put two (2) new filters into the filter wells and screw filter caps
back into place.
Note
Replacement filters were shipped with the new instrument.
Additional filters can be ordered from TSI under PN 801666.
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