Foss NIRS DS3, User Manual

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The filter that is located at the rear of the instrument should be replaced regularly,
approximately once a year.
1. Push down the handle on the lid and flip down the lid.
Fig. 115 Lid
2. Relace the filter.
Fig. 116 Filter
3. Close the lid.
The temperature inside the instrument is higher than the ambient temperature due
to the heat generated by the lamp. Excessive temperature might cause the lamp to
burn out prematurely. DS3 / F is equipped with a cooling system that helps to keep
the internal temperature below the limit of 55 °C. Optimally, the lamp temperature
should be stable and around 35-40 °C. If the temperature rises above 40 °C the
cooling liquid level should be checked.
1. Turn off the instrument and unplug the power cable.