Yokogawa Extractive Oxygen Gas Analyzer TDLS220 - Manual (Page 59)

<7 ROUTINE MAINTENANCE> 7-6
IM 11Y01B02-01E-A 4th Edition September 11, 2012-00
Window Removal for Cleaning or Replacement:
Follow the precautions outlined in the “Thermal hazard” and “Chemical hazard” sections of the SAFETY
chapter. If the flow cell becomes contaminated then it may be cleaned using the following procedure:
• Discontinue the process gas flow and initiate nitrogen (or instrument air) purge of the
analyzer.
• Shut down the analyzer, disconnect from AC power, and wait for 30 minutes to let the
gas
• Open the measurement unit cover by loosening the four Philips head screws (use a #2
Phillips head type screw driver)