Checks - Biasi ADVANCE 30C Service Manual

18 .7 Checks

Check of the spark generator
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
There is not a significant way to verify the integrity of the spark
generator. When the fan turns but the burner does not light a
possible cause is a faulty spark generator and it is advisable to
replace it to locate the fault.
Check the position of the electrode edges
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
1 Remove the ignition electrodes (see section "18.2 Removal
of the Ignition and detection electrodes" on page 42).
2 Check for the correct distance between the metallic edges of
the ignition electrode (see Figure 18.7 - Figure 18.8).
Earth
electrode
Figure 18 .7
Check the connection wires
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
7 mm
Ignition
electrode
Figure 18 .8
- 44 -
IGNITION AND DETECTION ELECTRODES
Ignition
electrode
Detection
electrode
1 Remove all the case panels and the sealed chamber lid.
2 Check for the integrity of the insulation of wires which con-
nect the electrodes to the spark generator and to the control/
ignition p.c.b.
Check of the detection electrode.
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
The detection electrode in Figure 18.8 also functions as a sensor
for the correct drainage of the condensate.
Should the mentioned electrode come into contact with the con-
densate water present within the combustion chamber it sends
the boiler into safety lockout.
Therefore, should the insulation be wet or deteriorated, provide
for the substitution of the same.
Remove any encrustations and dirt from the detection electrode
or replace it if damaged.
Warning - Insulation panels material handling care
Mineral fibres are used in this appliance for the insulation panels
of the combustion chamber
Excessive exposure to these materials may cause temporary ir-
ritation to eyes, skin and respiratory tract.
Known hazards - Some people can suffer reddening and itching
of the skin. Fibre entry into the eye will cause foreign body irrita-
tion, which can cause severe irritation to people wearing contact
lenses. Irritation to respiratory tract.
Precautions - Dust goggles will protect eyes. People with a histo-
ry of skin complaints may be particularly susceptible to irritation.
High dust levels are only likely to arise following harsh abrasion.
In general, normal handling and use will not present high risk, fol-
low good hygiene practices, wash hands before, touching eyes,
consuming food, drinking or using the toilet.
First aid - Medical attention must be sought following eye contact
or prolonged reddening of the skin.