ABB Endura AZ40 Manuale - Pagina 8

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7 Removing / Refitting sensor covers

7.1 Removing sensor covers

Referring to Fig. 7.1:

1. Unscrew 4 (captive) cover retaining screws A using a

medium flat-bladed screwdriver. and remove sensor cover

2. Unscrew 2 (captive) cover retaining screws C using a

medium flat-bladed screwdriver and remove sensor

terminal cover D.

Retain covers B and D for re-use.

IMPORTANT (NOTE)

Check the seals fitted to each cover. If they need

replacing or seals have bonded to the mating

surfaces of the sensor assembly, replace them –

see Instruction INS/ANAINST/10-EN.

Fig. 7.1 Removing sensor covers

INS/ANAINST/008-EN Rev. B | Endura AZ40 | Sensor assembly | Heater and thermocouple kit

7.2 Refitting sensor covers

Referring to Fig. 7.1:

1. Apply a light coating of anti-seize compound (suitable

for temperatures up to 200 °C [392 °F]) to the threads

of sensor cover mounting screws A and C.

2. Refit the sensor cover B and sensor terminal cover D in

the reverse order of removal – refer to Section 7.1.

3. Prepare the sensor assembly for operation by reversing

the procedures in Sections 5 and 4 (pages 5 and 4).

4. Refer to Operating instruction OI/AZ40-EN to restore the

analyzer to full operational condition.