Maintenance
32
Fan
If deposits have been building up on the fan blades, carefully
clean the blades one by one with a soft brush until the material
of the blades is visible again. Work consistently in cleaning the
blades, and do not use too much force or else the fan may get
out of balance and run irregularly.
Ignition / ionisation electrode
Check if the distances between the electrodes and between
electrodes and burner are OK. If not try to bend the electrodes
in the right position. The electrodes are working under high
temperature. Therefore the electrodes become hard and are
difficult to bend. When bending used electrodes there is a risk of
breaking or tearing the electrode. Check if there are any tears/
cracks in the electrodes after bending them. If so then replace
the electrode with a new one. Also change the electrode if any
cracks can be seen in the ceramic electrode insulation. If the
electrode is changed the gasket should also be replaced.
7,00 ( 0,2) mm
-+
Burner
When defects are found that cannot be fixed by the
service engineer, he has to inform the end user
about the defects, and should advise the end user
to have them fixed.
This should also be mentioned on the service
report of the boiler. During maintenance gas, air,
flue gas and condensate connections are loosened
and remounted. Make sure all the components are
mounted gas-/water tight before recommissioning
the boiler.
8,50 ( 0,2) mm
+-
5,00 ( 0,5) mm
-+
Ignition electrode
Earth
