Emerson OCX 8800 Remove O2 Cell and Heater Strut Assembly, Remove Sample Block Heater Rods

Instruction Manual

IM-106-880, Rev 1.0 January 2007

Figure 7-4. O2 Cell,

Thermocouple, and

Heater Connections

OCX 8800

O2 Cell Wires
O2 Heater Wires		Wire
Thermocouple Wires		Return
+	+

+

+ O2

-

Sensor Housing Terminals

2

HTR 02

1

2

HTR CO

1

2

HTR SB

1

ORG

GRN

RED

YEL

-
T/C O2
+	+	+
-
T/C CO
+	O2 Cell and Heater Strut
-		Assembly
T/C SB
+
	Sample
-	Block	Sample Block
	EXC Thermo-	Heater Rods
-	couple
CJC
+
-
CO REF		Thermal
+
		Switch
-
CO ACT
+
+ EXC		37390069

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.

7-7