Teledyne 9110T - Nitrogen Oxides Analyzer - Manual (Page 254)

Model 9110T NOx Analyzer Instrument Maintenance
Teledyne Analytical Instruments 254
15. Reinstall the instrument cover and power up the analyzer.
16. Allow the converter to burn-in for 24 hours, and then recalibrate the instrument.
11.3.9. CLEANING THE REACTION CELL
A dirty reaction cell will cause excessive noise, drifting zero or span values, low response or a
combination of all.
To clean the reaction cell, it is necessary to remove it from the sensor housing.
1. Turn off the instrument power and vacuum pump. Refer to Figure 11-6 for the
following procedure.
2. Disconnect the black 1/4" exhaust tube and the 1/8” sample and ozone air tubes
from the reaction cell. Disconnect the heater/thermistor cable.
3. Remove two screws (TAI P/N SN144) and two washers holding the reaction cell to
the PMT housing and lift the cell and manifold out.