Teledyne 9110EH - Nitrogen Oxides Analyzer - Manual (Page 164)

Instrument Maintenance Model 9110EH Instruction Manual
9.3.3. Changing the Ozone Filter Chemical
The O
3
filter is located between the O
3
generator and the reaction cell and cleans the O
3
stream from solid and liquid contaminants that are created inside the O
3
generator. The
content of the filter cartridge needs periodical exchange according to Table 9-1, a rebuild kit
is available from the factory. Appendix B of this manual lists the part numbers of the ozone
filter rebuild kit. Some older Models 9110EH contain a Teflon cartridge, which is shown in the
inset. Use a special tool for the red fittings of those cartridges, otherwise follow these
instructions:
• To change the filter chemical, follow these steps:
• Turn of power to the analyzer and pump. Remove the analyzer cover and locate the
O
3
filter in the front of the analyzer next to the O
3
generator.
• Use a 7/16” wrench to remove both pieces of 1/8” tubing from the filter.
Figure 9-3: Ozone Filter Unit
• Remove the two 3” mounting screws with a Phillips screw driver and take out the
filter cartridge.
• Using a 9/16” wrench, remove both fittings from the cartridge.
150 M9110EH Rev 0