Boiler maintenance
Inspection, cleaning and maintenance
Page 36
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Clean the flue gas sensors
Remove the insulating cover
Page 35, Checking the heat-
exchanger and flue gas
collection chamber
Release the threaded pin and
remove the sensing element from
the flue gas pipe
Wipe off the flue gas sensor with a
clean cloth
Slide in the flue gas sensing
element and secure it hand-tight
using the threaded pin
Checking the primary air pipes
Open the insulating door and
combustion chamber door
Remove the combustion mount
Check primary air pipes(1) for air
flow
If necessary, clean the pipes
Checking the gearing
At the back of the boiler: Ash screw gearing
There must not be any leaking lubrication!
Cleaning the induced
draught ventilator
Detach the induced draught
ventilator on the back side of the
boiler
Check for dirt and damage
Clean the blower wheel with a soft
brush or paint brush
Don’t move the balancing
weights on the blower wheel!
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