ABB Endura AZ40 Operating Instruction - Page 9

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ABB Endura AZ40 Operating Instruction
8.3 Sensor assembly gaskets
8.3.1 Removing the O
sensor
2
IMPORTANT NOTE
The O
sensor must be removed to enable access to the
2
COe block thermocouple – see Fig. 8.4, page 11, item
L.
Referring to Fig. 8.3:
1. Place the sensor assembly on a clean flat surface with the
flange studs pointing down.
2. Disconnect O
sensor wiring at upper terminals 8, 9, 10
2
using a small flat-bladed screwdriver to depress the spring
connector in each terminal and withdraw the wires from the
terminal housing.
sensor A from manifold block B using a
3. Unscrew O
2
7
/
in. spanner (wrench) and withdraw the sensor.
8
CAUTION – Minor injuries
Do not overtighten when refitting the O
1
2
3
4
8
O2 HTR WHT+
Fig. 8.3 Removing the O
sensor
2
sensor.
2
5
6
7
8
8
9 10
9 10 11 12 13 14 15 16 17 18 19 20
10
9
O2 SEN BLK
O2 HTR WHT–
Endura AZ40 | Sensor assembly | Orifice and seals kit | INS/ANAINST/007-EN Rev. B
9