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C. Installing and Changing Filters
To install or remove filters or samples, the following procedure is recommended:
1) If the filter assembly is mounted to the SpectraPro™, remove it and disconnect the cable, if
attached.
2) Place the filter assembly on a clean surface with the motor down. Refer to
Figure 1.
3) Using the 1/16" allen wrench supplied, remove the eight screws securing the cover plate to
the filter assembly (refer to Figure 1). While pushing on the end of the shaft with a pencil,
carefully remove the cover plate by lifting straight off the shaft. Caution: A spacer is located
on the filter wheel shaft between the filter wheel and cover. If this spacer comes off with the
cover, place it back onto the shaft. Refer to Figure 2.
4) The six filter positions are now visible, refer to Figure 2. The filters are held in with split rings.
Determine the filters to be removed or the location for the filters to be installed. The filter
positions are marked 1 thru 6 on the wheel. Remove the split rings. Remove or install filters
as required. Replace the split ring assuring it is pushed firmly against the filters.
5) Assure that the spacer is on the filter wheel shaft and attach the cover plate with the eight
screws. The filter assembly is now ready for mounting to the SpectraPro™.
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