Yokogawa Extractive Oxygen Gas Analyzer TDLS220 - Manual (Page 60)

<7 ROUTINE MAINTENANCE> 7-7
IM 11Y01B02-01E-A 4th Edition September 11, 2012-00
• Carefully extract the process window – handle with care!
• Using 7/64” Allen key carefully insert through the access holes and remove the four window
retaining screws and lock washers – use long needle nose pliers to carefully hold each screw as
it comes lose.
• TAKE CARE not to touch the detector or laser collimation lens!