Sharp IQ-8000 Manual de servicio Pagina 46

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What to do if... CarboVis 70x IQ TS
7 - 2
ba75950e02 11/2012
Drifting measured values
Display of
OFL
Measured values
fluctuating heavily
Cause Remedy
Cleaning efficiency too low -
measurement windows
becoming more and more
contaminated
Clean the measurement win-
dows (section 5.2.4)
Use other cleaning method
Select different measurement
location
Set longer cleaning duration
Set more frequent cleaning
procedures
Install optional compressed air
cleaning device
Failure of the optional com-
pressed air cleaning system
Clean the measurement win-
dows (section 5.2.4)
Check all components of the
compressed air cleaning sys-
tem (compressor, compressed
air line, UV/VIS sensor, rinsing
openings)
Substantial change of test
sample (sample matrix)
Carry out new user calibration
Cause Remedy
Measuring range exceeded Check process
Foreign matter in the measur-
ing gap
Clean the measuring gap (sec-
tion 5.2.3)
Erroneous user calibration Repeat user calibration. Make
sure the samples for compari-
son are representative.
Cause Remedy
Gas bubbles in front of the
measurement windows
Check the position within the
process and the installation
position
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