Thermo Scientific Nicolet Series User Manual page 38

Troubleshooting
Checking and Changing the Purge Gas Filter
34 Nicolet iS20 User Guide
4. Turn on the instrument power. Wait until the startup sequence finishes and then turn on
the computer and restart OMNIC software.
5. Remove any USB computer accessories that may be interfering with communications
with the spectrometer.
6. Close any applications that might interfere with OMNIC software.
7. If the problem persists, contact us for assistance.
The instrument temperature is out of specification
1. Make sure nothing is placed on top of the instrument and that air can flow freely around
it.
2. Make sure the power supply vents are not blocked.
3. The ambient temperature of the room may be too high. The ambient temperature should
be between 15 °C and 30 °C (59 °F and 86 °F). If the room temperature cannot be
adequately controlled, move the instrument to a location that is maintained in the
recommended temperature range.
4. If the problem persists, contact us for assistance.
OMNIC cannot communicate with the detector
If OMNIC software cannot communicate with the instrument, contact us for assistance.
The MCT detector is warm
1. Cool the detector with liquid nitrogen.
2. Check the detector dewar for signs of leaks. If necessary, contact us to restore the dewar
vacuum.
3. If the problem persists, contact us for assistance.
The laser voltage is out of specification
1. The ambient temperature of the room may be too high. The ambient temperature should
be between 15 °C and 30 °C (59 °F and 86 °F). If the room temperature cannot be
adequately controlled, move the instrument to a location that is maintained in the
recommended temperature range.
2. If the room temperature is within the recommended range, remove any accessories or
samples from the sample compartment, and then align the instrument.
3. If the problem persists, contact us for assistance.
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