PerkinElmer Frontier FT-IR, User Manual

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70 . Frontier IR Single-range Spectrometers User's Guide
Opening the Main Cover
To perform most maintenance tasks, you have to open the main cover of the spectrometer.
NOTE:
If you have any samples or reference materials in the storage compartment, you are
advised to remove these before opening the main cover.
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.
CAUTION
Do not open the main cover if the humidity is:
>80% relative humidity for an instrument fitted with KBr optics.
>45% relative humidity for an instrument fitted with CsI optics.
The humidity sensitive optics will be damaged if subjected to a relative
humidity in excess of the specified levels.
The main cover is hinged at the back of the instrument and opens from the front. Figure 35
identifies the locking bolts, which are on the front of the instrument.
Figure 35 Main cover locking bolts
1. Switch off the power supply to the spectrometer.
2. Wait for 60 seconds.
3. Disconnect the power cable.
4. Remove the sample compartment cover, if fitted; open the cover, press on the cover
retaining clip and then pull the cover vertically to remove it (Figure 36).
Locking bolt
Locking bolt