ABB Endura AZ40 Manuale - Pagina 14

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8.4 Flange block thermocouple – T/C 2

Referring to Fig. 8.5:

1. Use a small flat-bladed screwdriver to depress the spring

connectors at terminal numbers 16 and 18 and disconnect

flange block thermocouple T/C 2 wires from top terminal

block connectors A.

2. Pull thermocouple (T/C2) wires up through (right) opening

B in flange block C.

3. Use a small flat-headed screwdriver to unscrew cartridge

heater / thermocouple retainer screw D and remove

cartridge heater / thermocouple retainer E. Retain items

for re-use.

Do not disturb cartridge heater F.

4. Withdraw thermocouple G (T/C 2) from flange block C

and discard the thermocouple.

5. Slide the new thermocouple (T/C 2) into its chamber in

flange block C.

6. Carefully form the thermocouple through 90 ° so it fits into

the groove in retainer E.

IMPORTANT (NOTE)

The retainer (E) at this position has a notch used

to guide / restrain the thermocouple. Only use the

retainer

from this position when fitting / replacing

thermocouple T/C 2.

7. Apply a small amount of anti-seize compound (suitable for

temperatures up to 200 °C [392 °F]) to the thread of

cartridge heater / thermocouple retainer screw D and use

a small flat-headed screwdriver to secure cartridge heater

/ thermocouple retainer E to flange block C.

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

8. Feed both thermocouple (T/C2) wires down through right

opening B in flange block C and make terminal block

connections at the top connectors A as follows:

— connect one wire from thermocouple T/C2 to

terminal 16.

— connect one wire from thermocouple T/C2 to

terminal 18.

9. Refit sensor covers – refer to Section 7.2, page 8.