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13 5 Replacement of parts
The operator must ensure that parts that are subject to wear and ageing during the life of the product
are replaced by a qualified fitter.
Details of the replacement cycles can be found in the maintenance manual from BWT.
13 6 BWT expert maintenance
Regardless of how the outlet water is used, the manufacturer recommends having expert maintenance
performed at least every 24 months.
13 7 Stoppages and re-activating the unit
In case of expected stagnation phases, take the
following preventive measures:
BWT recommendations for restarting a unit
after stagnation phases:
Fewer than 3 days:
None
Start-up rinse of the product. Then open all taps to
rinse the system.
3 to 30 days:
Use the controller to put the product in Holiday
mode. For information about activating Holiday
51.
For information about deactivating Holiday mode,
1 to 6 months:
Close the connection fitting and shut down the prod
-
uct via the controller. Then remove the mains plug.
Open the main shut-off valve and connection fitting.
Have BWT after-sales service perform a regen-
eration of the exchanger column using Dioxal
disinfectant.
Then open all taps to rinse the system.
Longer than 6 months:
Disconnect the building’s water system from the
municipal water system.
Disconnect the product from the water supply
system (close the connection fitting) and shut
down the unit.
Reconnect the unit to the municipal drinking water
system.
Have BWT after-sales service perform a regen-
eration of the exchanger column using Dioxal
disinfectant.
