4. Remove the cover from the electronics housing to expose the electronics housing
terminal blocks, Figure 9-2.
5. Disconnect and remove the power leads from the AC power input terminal block and
remove the ground lead from the ground stud.
6. Disconnect and remove the O
2
and COe signal leads from the 4-20 mA signal output
terminal block.
7. If used, disconnect and remove the external relay leads from the alarm output relay
terminal block.
8. Disconnect and remove customer power and signal wire conduits and wiring from the
electronics housing.
9. Remove insulation to access the sensor housing mounting bolts. Unbolt the Hazardous
Area OCX 8800 from the stack and take it to a clean work area.
10. Allow the unit to cool to a comfortable working temperature.
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