Yokogawa Extractive Oxygen Gas Analyzer TDLS220 - Manual (Page 56)

<7 ROUTINE MAINTENANCE> 7-3
IM 11Y01B02-01E-A 4th Edition September 11, 2012-00
• Carefully remove all four fasteners and lock washers and the mirror mounting plate
The mirror is not fastened or adhered to the mounting plate so during removal, keep the
mounting plate tilted up-wards to prevent the mirror from falling out of the mounting
plate
• Visually inspect the mirror surface for any signs of contamination, dirt, deposits, films, oils, etc. If in
any doubt about the quality of the mirror surface then cleaning is recommended. If obvious severe
damage to the actual mirror surface can been seen then a replacement mirror should be
installed.