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OCX 8800
Instruction Manual
Figure 7-9. Removal of Sample Remove Sample and Exhaust Tubes and Exhaust Tubes
2
4
Use heat resistant gloves when removing the probe tube or exhaust tube. The tubes are bonded with a thread sealing compound. The compound softens at 450°F (232°C). The heated parts can cause severe burns.
1.Secure the sensor housing (1, Figure
2.Use a propane torch to heat the sample tube (2) or exhaust tube (3) to 450°F (232°C), minimum. Apply the heat near the threaded end of the tube.
3.While heating the tube, use a pipe wrench to apply removal torque to part being removed. Apply torque until the pipe thread sealant softens. Remove and discard the used sample tube (2), exhaust tube (3), or
4.Use MEK or methylene chloride solvent to clean thread sealant residue from the internal pipe threads in the housing. Refer to applicable MSDS sheet for solvent handling precautions.
1
3
1.Sensor Housing
2.Sample Tube
3.Exhaust Tube
4.In Situ Filter
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