Teledyne 9700 Spray Nozzle, Water Strainer, Filter Condensate Trap, Combustible Sensor

Flue Gas Analysis System Maintenance & Troubleshooting 5

5.1.4Spray Nozzle

It will be necessary to clean the mineral deposits from the spray nozzle periodically (see Figure 1). If water flow through the system dimin- ishes significantly, it is an indication that the nozzle is plugged. The nozzle can easily be <cleaned by removing it and soaking it in a 25% hydrochloric acid solution.

CAUTION: Use extreme care when using hydrochloric acid. Do not allow any solution to contact the skin or clothing. If acid contacts the skin, flush the exposed areas continuously for 5 to 10 minutes or until medical attention can be obtained. Do not breath hydro- chloric acid vapors. Use only in an approved vented safety hood.

5.1.5Water Strainer

It may be necessary to clean the screen in the strainer periodically (see Figure 1). This is accomplished by unscrewing the brass hex plug on the front of the unit and removing the screen.

5.1.6Filter Condensate Trap

Any accumulated water must be emptied from the condensate trap before the water level reaches the filter element (see Figure 1). This is accomplished by simply pressing sideways on the flexible drain spout on the bottom of the bowl. The filter element should also be cleaned periodi- cally by washing it with kerosene and blowing it dry with compressed air. The part number of the element is listed in Table 3.

5.1.7 Combustible Sensor

The combustible sensor is installed along with the H-28 heater and T-199 thermoswitch in the sensor unit enclosure. These components can be removed for replacement, if required.

TELEDYNE BROWN ENGINEERING 5-3

Analytical Instruments