41
Removing the maintenance cover
A
Fig. 28
Remove maintenance cover
A
on the back of the
boiler.
Performing maintenance
A
B
C
Fig. 29
1.
Remove Lambda probe
A
. Carefully clean with a
wire brush or oil-free compressed air.
2.
Check the Lambda probe for damage and replace
if required.
3.
If the Lambda probe needs to be replaced:
Pull out spring clip
B
and remove the Lambda
probe from its retainer.
4.
Remove air dampers
C
and clean with a wire
brush or oil-free compressed air.
5.
Calibrate the Lambda probe. See page 67.
Commissioning, inspection, maintenance
Cleaning the Lambda probe and air dampers
(cont.)
5777 985 GB