Specifications

3-10 Maintenance
Thermocouple Replacement
To replace a thermocouple:
1. Turn the power off by moving the Main Switch to the OFF position.
2. Open the top rear access cover.
3. Disconnect the defective thermocouple from the connector (Figure 3-12).
4. Unscrew the pressure screw.
5. Remove the old thermocouple.
6. Replace with the new thermocouple.
7. Tighten the pressure screw.
8. Reconnect the thermocouple to the connector.
Figure 3-12 Thermocouple
9. Check that the thermocouple is free to move inside the hole and is in contact with the ceramic
glass.
NOTE The spring will ensure a permanent contact between the thermocouple and the
vitro-ceramic glass.
CAUTION!
10. On the PLC screen, make sure the temperature reading of the new thermocouple is correct. If
not, repeat Step 9.
If a good contact is not made between the thermocouple and the vitro-ceramic
glass, the temperature reading will not be correct.
Pressure
Screw
Connector
Thermocouple