Advanced Maintenance . 93
Installing Filters in the Filterwheel
The following procedure describes how to install a filter in the filterwheel. The same
procedure should be followed when replacing a filter.
Due to the restricted cabling, the filterwheel assembly is removed from its mounting and
placed on the sample compartment baseplate. It therefore may be necessary to remove
the sample slide.
WARNING
Switch off the mains power supply to the spectrometer, wait 60
seconds, and disconnect the power cable before you open the cover of
the spectrometer. This makes sure that you are safe from electrical
shock and laser radiation.
1. Open the main cover of the instrument as detailed on page 84 and identify the
Filterwheel (Figure 40).
Figure 40 Filterwheel location
2. You need the standard sample holder baseplate installed for this procedure, but
remove the sample holder itself by unscrewing the knurled screw (Figure 41).
Figure 41 Knurled screw
Filterwheel
Filterwheel
Knurled Screw
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