Changing The Thermocouple; Modular Flue Gas Probe; Compact Flue Gas Probe - TESTO 320 Instruction Manual

7 Maintaining the product
7.8.

Changing the thermocouple

7.8.1.

Modular flue gas probe

1. Release the probe catch by pressing the key on the probe
handle and remove the probe module.
2. Remove the thermocouple plug-in head from the socket using a
screwdriver and pull the thermocouple out of the probe shaft.
3. Insert the new thermocouple into the probe shaft until the
connection head clicks into place.
4. Fit a new probe module on the handle and engage in place.
7.8.2.

Compact flue gas probe

1. Loosen and remove halfshell handles.
2. Turn sealing cap clockwise as far as it will go and remove.
3. Release and remove the halfshell element.
4. Detach adapter and hose, push thermocouple out of its holder
and disconnect cable from thermocouple
5. Connect cables to the new thermocouple (white -, green +) and
push thermocouple back into the holder.
6. Connect adapter and hose to thermocouple. Adjust cables and
hoses, and refit halfshell elements.
7. Refit sealing cap and turn anti-clockwise (as far as it will go,
observe markings).
8. Replace halfshell handles and secure with screws.
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