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earth electrode
Ignition 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
1 Remove all the case panels and the sealed chamber lid.
2 Check for the integrity of the insulation of wires which con-
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ignition p.c.b.
Warning - Insulation panels material handling care
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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.
IGNITION AND DETECTION ELECTRODES
3,5 mm
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.
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