ABB Endura AZ40 Operating Instruction page 5

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5.3 Disconnecting the sensor electrical power and

signal cables at the process

DANGER – Serious damage to health / risk to life

Allow sufficient time for the sensor assembly to cool

before performing this procedure.

DANGER – Serious damage to health / risk to life

The transmitter must be isolated from mains power

supplies before performing this procedure.

Referring to Fig. 5.3:

1. Use a medium flat-bladed screwdriver to unscrew 4

(captive) cover screws A and remove cover B from

sensor assembly C.

2. Disconnect mains cable D from terminal block E

3. Disconnect signal cable F from terminal block G.

4. Disconnect thermocouple cables H from terminal block

5. If optional blowback is fitted, disconnect cable J from

terminal block K.

Fig. 5.3 Disconnecting sensor cables

5.4 Removing the sensor assembly from the process

DANGER – Serious damage to health / risk to life

Allow sufficient time for the sensor assembly to cool

before performing this procedure.

Referring to Fig. 5.4:

1. Use a 10 in. adjustable spanner (wrench) to remove 4 nuts,

washers and lockwashers A securing sensor assembly

B to mounting flange C. Set items aside for re-use.

2. Carefully remove the sensor assembly and the attached

probe (including filter assembly) from the process.

3. Temporarily cover process opening until the sensor

assembly is ready to be re-installed.

Fig. 5.4 Removing the sensor assembly from the process

Endura AZ40 | Sensor assembly | Orifice and seals kit | INS/ANAINST/007-EN Rev. B