6-8 | Model 933S UV Analyzer
Changing Out Replaceable Parts
The following sections discuss parts that should be replaced, as per the
“Analyzer Preventive Maintenance Schedule.”
Preventing leaks in the sample system is critical to proper analyzer
operation. If sample gas migrates into the Reflector Block or Optical
Bench (uncommon) due to a leak in the Measuring Cell, the optics
will become damaged and most likely require replacement. Most leaks
are preventable with regular cleaning and replacement of the Measur-
ing Cell o-rings.
IMPORTANT
Performing preventive maintenance on the analyzer requires using
the System 200 Configurator Software. Familiarize yourself with the
software before working on the analyzer. See Chapter 4 for details on
how to navigate through the software.

NOTE
!
CAUTION
Figure 6-1.
Cell Window Housing
and Overtemp switch
location, Upper
Enclosure.
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