Maintenance
45
g.
Open filter cassette using enclosed tool PN 7001303.
Figure 4-9: Open Filter using Enclosed Tool
h.
Remove screen mesh from filter cassette and blow out using
compressed air. Blow in reverse direction to remove captured
particulate.
i.
Replace mesh in filter cassette and press halves together. Make sure
filter has been fully closed. The filter tool PN 7001303 can be used
to ensure the filter is fully closed.
Figure 4-10: Replace Mesh in Filter Holder
j.
Place filter cassette back into position and close blue retaining clip.
Make sure retaining clip snaps back into place.
Notes
Replacement filters (HEPA and 3-mm Filter Cassette with mesh
filter) were shipped with the new instrument. Additional filters can
be ordered from TSI under PN 801673.
TSI
does not
supply any filter media for the filter cassette. Any
commercially available 37-mm filter media may be used with the
D
UST
T
RAK
™ II or DRX desktop instruments to collect gravimetric
reference samples.
3.
It is important to reset the instruments filter counter after replacing
filters. Resetting the counter will clear the filter error condition
shown on the main screen.
Reset the counters by the following:
a.
Turn on the instrument.
b.
Press the
Setup
button to go into the setup screen.
