Metrohm NIRS DS2500 Analyzer - Manual (Page 28)

6.1 Maintenance by Metrohm Service
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6 Maintenance
6.1 Maintenance by Metrohm Service
Maintenance of the NIRS DS2500 Analyzer is best carried out as part of
annual service, which is performed by specialist personnel from Metrohm.
A shorter maintenance interval may be necessary if you frequently work
with caustic and corrosive chemicals.
Metrohm Service offers every form of technical advice for maintenance
and service of all Metrohm instruments.
6.2 User maintenance
Table 1 Maintenance tasks and intervals
Maintenance task Maintenance interval
Cleaning the instrument when necessary
Cleaning the sample compartment when necessary
Cleaning the sampling window before every measurement
Replacing the lamp after 4,000 burning hours
if Wavelength Certification or the Performance
Test deliver unsatisfactory results.
Check the fan filter and replace it, if necessary monthly
Replacing the fuse if melted
6.2.1 Replacing the lamp
The lamp must be replaced if it is burned out or when its performance is
insufficient. Signs of an insufficient lamp performance include:
￭ Measurements are impaired by noise.
￭ The repeatability of the wavelengths is deteriorating.
￭ The performance test is no longer completed successfully.
Removing the lamp
Required accessories ￭ Screwdriver
Clean the instrument before replacing the lamp. This prevents dust caus-
ing damage to the lamp's reflector.