1. Unscrew the two screws on the middle top casing.
2. Remove the middle top casing.
3. Remove the plug of the electrode from the ignition transformer.
Important
The ignition cable is fixed to the electrode and may not be
removed.
4. Unscrew the 2 screws on the electrode.
5. Remove the electrode.
6. Fit the new electrode.
Caution
To prevent damage, do not fit the new electrode until the burner
has been cleaned and refitted.
7. Reassemble the unit in reverse order.
11.4.3 Cleaning the gas filter - 5-9 sections boiler
1. Remove the four screws from the gas pipe.
2. Remove the gas filter.
3. Inspect the gas filter.
3.1. Replace the gas filter if necessary.
3.2. Clean the gas filter without the use of liquids (shake it or
carefully blow it clean) if it does not need to be replaced.
4. Reassemble the unit in reverse order. Make sure the ridge on the gas
filter is positioned as indicated.
11.4.4 Cleaning the gas filter - 10 sections boiler
1. Remove the two screws from the gas filter cover.
2. Remove the cover.
3. Remove the gas filter.
Fig.128 Replacing the ionisation/ignition
electrode
AD-3001581-01
1
1
3
4
2
Fig.129 Removing the gas filter
AD-3001601-01
4x
1
2
3
Fig.130 Cleaning and mounting the gas filter
AD-3001602-01
3.1
3.2
4
Fig.131 Removing the gas filter
AD-3001603-01
2x
2
3
1
11 Maintenance
7762666 - v.02 - 29092020
C 340 / C 640
155
