45
SERVICING
isar - Installation and Servicing
63
IGNITION ELECTRODE REPLACEMENT
64
FLAME DETECTION ELECTRODE REPLACEMENT
1. Refer to Frame 57.
2. Remove the boiler front and sealing panels. Refer to
Frames 49 & 50.
3. Unplug the ignition lead from the electrode.
4. Remove the earth lead from the ignition electrode.
5. Remove the remaining screw holding the ignition
electrode to the combustion chamber.
1. Refer to Frame 57.
2. Remove the boiler front and sealing panels. Refer to
Frames 49 & 50.
3. Unplug the flame detection lead from the electrode.
4. Remove the 2 screws holding the flame detection
electrode to the combustion chamber.
5. Remove the electrode.
6. Remove the electrode.
7. Fit the new ignition electrode, using the new gasket
supplied. Check dimensions as shown.
8. Reassemble in reverse order, and check that no damage
to the combustion chamber insulation has occurred
during the electrode replacement.
9. Check the operation of the boiler. Refer to Frame 57.
6. Fit the new flame detection electrode, using the new gasket
supplied. Check dimensions as shown.
7. Reassemble in reverse order, and check that no damage to
the combustion chamber insulation has occurred during the
electrode replacement.
8. Check the operation of the boiler. Refer to Frame 57.
65
SPARK GENERATOR REPLACEMENT
1. Refer to Frame 57.
2. Disconnect the leads from the spark generator and
bracket.
3. Remove the M5 screw securing the spark generator
bracket to the flue casting.
4. Remove the 2 M4 screws securing the spark
generator to the bracket.
5. Fit the new spark generator and re-assemble in
reverse order.
6. Check operation of the boiler. Refer to Frame 57.
nm8802
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SERVICING
203319-3.pmd 27/03/2008, 08:1545
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