7.4
Specific maintenance operations
CAUTION
After maintenance operations, fill in the corresponding
checklist in the maintenance log provided .
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:
7.4.1.
Replacing the ionization/ignition electrode
Replace the ionization/ignition electrode in the following cases:
4
Ionization current <3 µA.
4
Electrode worn.
4
Electrode available in the maintenance kit.
If replacement is necessary, proceed as follows:
1. Remove the cable from the ionization/ignition electrode on the
ignition transformer.
2. Unscrew the 2 screws and remove the ionization/ignition
electrode.
3. Replace the ionization/ignition electrode.
7.4.2.
Cleaning the plate exchanger (domestic hot
water end) and the water filter cartridge
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.
T001528-A
1
2
3
Calenta 25s - 28c - 35s - 40c
7. Checking and maintenance
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