HDG Navora Manual - Euroheat

5 Cleaning and maintaining the HDG Navora – How to proceed
Tightness
When reinstalling the oxygen sensor, make sure it is firmly
tightened.
Use a pipe wrench to tighten the union nut (1). Do not over tighten!
Never tighten the oxygen sensor by the shaft body.
✓ The oxygen sensor is clean.
Inspecting and cleaning the flue gas sensor
1. Allow the fire in the boiler to burn out.
The operating status of the HDG Navora must be indicated with
“Heat production off” in the display of the HDG Lambda
Control.
✎ See section “4.1 Overview of the controls and display
components” in chapter “4 Using the HDG Navora Wood Boiler”.
Caution!
Danger of burns from hot surfaces.
The surfaces of the boiler can be hot. Even when turned off, they
only cool down slowly.
Do not start with the maintenance work until the surfaces have
cooled down.
2. Using light pressure, rotate the flue gas sensor (1) downwards
one quarter turn in an anticlockwise direction.
1
2
Figure 5/10 - Cleaning the flue sensor
3. Pull the flue sensor (1) out of the holder (2).
4. Clean the sensor.
5. Reinstall the flue sensor (1) in reverse order.
✓ The flue sensor is cleaned.
© HDG Bavaria GmbH 06/2008 HDG Navora 20/25/30 with HDG Lambda Control 1 - V 2 - en
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