Changing the no2 converter, Changing the no, Converter – Teledyne 9110EH - Nitrogen Oxides Analyzer User Manual

Page 168: Figure 9-4, Zero air scrubber assembly, Figure 9-4 the exploded assembly, Emicals as shown in figure 9-4

Instrument Maintenance Model 9110EH Instruction Manual

Figure 9-4: Zero Air Scrubber Assembly

9.3.8. Changing the NO

converter

The NO

converter is located in the center of the instrument, see Figure 3-2 for location,

and Figure 9-5 for the assembly. The converter is designed for replacement of the cartridge
only, the heater with built-in thermocouple can be reused.

• Turn off the analyzer power, remove the cover and allow the converter to cool.
• Remove the top lid of the converter as well as the top layers of the insulation until

the converter cartridge can be seen.

CAUTION

The converter operates at 315º C. Severe burns can result if the

assembly is not allowed to cool. Do not handle the assembly until it is at

room temperature. This may take several hours.

• Remove the tube fittings from the converter.
• Disconnect the power and the thermocouple of the converter. Unscrew the

grounding clamp of the power leads with a Phillips-head screw driver.

154 M9110EH Rev 0