TESTO 320 - Replacing the thermocouple

7 Maintaining the product
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4. Replace the probe shaft and lock the sealing cap (2) by tightening
it anti-clockwise (as far as it will go, observe markings).
5. Replace halfshell handles and secure with screws.
7.7.2. Replacing the thermocouple
✓ Disconnect the flue gas probe from the measuring instrument.
1. Loosen and remove halfshell handles (1).
2. Turn the sealing cap (2) clockwise as far as it will go and
remove probe shaft.
3. Release halfshell elements (3) and remove.
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