Metrohm NIRS XDS MultiVial Analyzer - Manual (Page 112)

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another part of the laboratory, or place it on
isolated supports away from the XDS Analyzer.
4. Increasing noise in Performance Test may indicate
a gradually failing lamp. Performance Test is very
sensitive to any optical changes in the instrument,
including noise caused by lamp issues. Be sure the
instrument is warmed up, then run the test again.
If it continues to fail, consider a lamp change to
remedy the problem.
6 Instrument fails Instrument
Calibration. 1. Verify that the Wavelength Standard is properly
positioned in the holder when prompted by
software.
2. Verify that Reference Standardization has bee
performed. (This will affect the wavelength
positions.)
7 Instrument Gain is excessively
high in Gain Test. 1. NIR Gain should always be less than 80 on the
reference, unless extreme lengths of fiber are
used. If gain is high, verify that the reference is in
place and operating. (Open cover if required to
verify that reference paddle is in place on most
modules.)
2. Verify that lamp is lit. (see above)
8 Instrument cooling fans are
operating at maximum rate. 1. Verify that air intake on side is not blocked by
other equipment. Leave at least 3-4 inches (76-
102mm) space by intake fins for proper airflow.
2. Verify that air filter is clean. If not, clean or replace
filter. If fan speeds dropped shortly after opening
fan filter door, this is a sign of a blocked filter.
3. Verify that the fan exhaust area is not blocked,
restricting the fan outflow. Leave at least 3-4
inches (76-102mm) space in by fan exhaust for
proper airflow.
4. Check ambient temperature in area where
instrument is used. If temperature is near the
maximum, fan flow will be high.
9 X-Y Error reported in Vision
DO NOT OPERATE OR
TROUBLESHOOT WITH THE
LID OPEN. SUNLIGHT MAY
CONFUSE THE OPTICAL
INTERRUPTERS USED TO
POSITION THE SAMPLE
1. 1. Remove tray or sample cell from carriage and
re-position carefully.
2. 2. Verify that nothing has caused the mechanism
to become stopped, jammed, or manually re-
positioned.
To reset:
Click “OK” in the dialog box containing the X-Y