TESTO 330, Instruction Manual

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7 Maintaining the product
72
7.5. Cleaning the modular flue gas probe
✓
Disconnect the flue gas probe from the measuring instrument
prior to cleaning.
1. Release the probe catch by pressing the key on the probe
handle and remove the probe module.
2. Blow compressed air through the flue gas ducts in probe
module and probe handle (see illustration). Do not use a brush!
3. Fit a new probe module on the probe handle and engage it in
place.
7.6. Replacing the probe module
✓
Disconnect the flue gas probe from the measuring instrument
prior to cleaning.
1. Press the key on the top of the probe handle and remove the
probe module.
2. Plug in the new probe module and engage it in place.
7.7. Changing the thermocouple
1. Release the probe catch by pressing the key on the probe
handle and remove the probe module.