Teledyne T200, Operation Manual, Page: 224 / 425

Instrument Maintenance Teledyne API
– T200 NO/NO
2
/NO
X
Analyzer Operation Manual
222
4. Remove two screws (Teledyne API P/N SN150) and two washers.
5. The reaction cell will separate into two halves, the stainless steel manifold assembly
and the black plastic reaction cell with window gasket, stainless steel reaction cell
sleeve, optical filter and O-rings.
6. The reaction cell (both plastic part and stainless steel sleeve) and optical filter
should be cleaned with Distilled Water (DI - Water) and a clean tissue, and dried
thereafter.
7. Usually it is not necessary to clean the sample and ozone flow orifices since they
are protected by sintered filters.

If tests show that cleaning is necessary, refer to Section 11.3.10 on how to
clean the critical flow orifice.
8. Do not remove the sample and ozone nozzles. They are Teflon threaded and
require a special tool for reassembly. If necessary, the manifold with nozzles
attached can be cleaned in an ultrasonic bath.
9. Reassemble in proper order and re-attach the reaction cell to the sensor housing.
Reconnect pneumatics and heater connections, then re-attach the pneumatic
sensor assembly and the cleaning procedure is complete.
10. After cleaning the reaction cell, it is also recommended to exchange the ozone
supply air filter chemical as described in Section 11.3.3.
11. After cleaning, the analyzer span response may drop 10 - 15% in the first 10 days
as the reaction cell window conditions. This is normal and does not require another
cleaning.
06858E DCN7057