Emerson OCX 8800 instruction manual + +, ++

Instruction Manual
IM-106-880, Rev 1.0
January 2007
7-7
OCX 8800
Figure 7-4. O2 Cell,
Thermocouple, and
Heater Connections
Remove O2 Cell and Heater Strut Assembly
1. Remove reference air tube (7, Figure 7-3) from sensor housing (8).
2. See Figure 7-4. Disconnect and tag O2 heater wires, O2 cell and return
wires, and thermocouple wires at the sensor housing terminals.
3. Remove the O2 cell and heater strut assembly (9, Figure 7-3) from
sensor housing (8). Remove and discard gasket (10).
Remove Sample Block Heater Rods
1. Disconnect sample block heater rod wires from terminal block. Refer to
Figure 7-4.
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++
O2
ThermocoupleWires
ORG
RED
T/C O2
T/C CO
T/C SB
EXC
CJC
O CellWires
2
O HeaterWires
2
ReturnWire
O Cell and Heater Strut
Assembly
2
CO REF
CO ACT
Sensor HousingTerminals
+
-
HTR 02
HTR SB
2
GRN
2
1
+
-
+
-
+
-
+
-
+
-
+
YEL
-
+
+
37390069
HTR 02
2
1
Sample Block
Heater Rods
Thermal
Switch
HTR CO
1
EXC
-
Sample
Block
Thermo-
couple