Cleaning The Modular Flue Gas Probe - TESTO 330i Instruction Manual

7 Maintaining the product
2. Remove the faulty sensor/bridge from the slot.
> For NO sensor: Remove the auxiliary circuit board.
3. Install new sensor/new bridge in the slot:
•
•
•
4. Push the hose connections onto the sensor/bridge.
5. Close the measuring instrument.
7.7.

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.
34
Do not remove the auxiliary circuit board for the NO
sensor until immediately before installation. Do not
leave the sensor without auxiliary circuit board for
longer than 15 minutes.
Slot 1: O sensor
2
Slot 2: CO sensor or CO
Slot 3: NO sensor or NO
When retrofitting a sensor, the associated measurement
parameter/unit must be enabled in the reading display.
sensor
low
sensor
low