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7. Checking and maintenance
7.5
Specific maintenance operations
2
1
106
If the standard inspection and maintenance operations have revealed
the necessity to carry out additional maintenance work, proceed as
follows, depending on the nature of the work:
7.5.1.
Replace the ionisation/ignition electrode in the following cases:
4 Ionisation current <3 µA.
4 Electrode worn.
If replacement is necessary, proceed as follows:
1. Remove the cord from the ionisation/ignition electrode on the
3
ignition transformer.
2. Unscrew the 2 screws and remove the ionisation/ignition
electrode.
3. Replace the ionisation/ignition electrode.
T001528-A
7.5.2.
Depending on the water quality and the operating mode, limescale
deposits may form in the plate exchanger and the water filter
cartridge. Periodic descaling may therefore be necessary. As a
general rule, a periodic inspection, along with cleaning, if necessary,
is sufficient. The following factors may affect the periodicity:
4 Water hardness.
4 Composition of the limescale.
4 Number of hours' operation of the boiler.
4 Draw-off rate.
4 Domestic hot water set point temperature.
Replacing the ionisation/ignition electrode
Cleaning the plate exchanger (domestic hot
water end) and the water filter cartridge
MCA 15 - MCA 25 MCA 25/28 MI
29/04/2010 - 300022146-001-B
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