Flushing/Bleeding Via A Flushing Valve; Flushing/Bleeding Via The Water Outlet Hose; Replacing The Filter Cartridge - BWT bestmax Premium S Instructions De Montage Et De Service

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6.8.2 Flushing/bleeding via a flushing valve

BWT recommends that a flushing valve is fitted at the filter cartridge outlet. If a flushing valve
is installed in the filter system outlet, the filter can easily be bled and flushed via this flushing
valve. Observe the operating instructions for the flushing valve.

6.8.3 Flushing/bleeding via the water outlet hose

If flushing/bleeding is not possible using one of the methods mentioned above, the filter
system can also be bled via the water outlet hose.
Procedure:
1. Close the check valve.
2. Disconnect the water outlet hose from the appliance, e.g. coffee machine.
3. Attach the end of the hose to the 10 litre container below.
4. Open the check valve.
5. Flush/bleed the filter system until bubble-free and clear filtered water emerges
(for flushing water volume, see the recommendations in Section 6.8).
6. Close the check valve.
7. Refit the water outlet hose onto the appliance.
8. Open the check valve.
9. Check the filter system and all connections for leaks.
6.9

Replacing the filter cartridge

I
CAUTION!
Close the existing check valve before replacing the filter cartridge!

INFORMATION!
f The filter cartridge must be replaced no later than 12 months after commissioning,
irrespective on the degree of exhaustion.
f The filter cartridge must also be replaced after a shutdown period of 4 weeks or more.
Procedure:
1. Close the check valve.
2. Unscrew the filter cartridge out of the filter head in a clockwise
motion (see Fig. 12).
Dismantling can be simplified by turning the filter head in the filter
bracket by 90°.
3. Check whether the total hardness of the natural water has
changed and adjust the replacement intervals and bypass setting
as required (see Section 10).
4. Install new filter cartridge as described in Section 6.8 (see Fig. 12).
5. Flush and bleed filter cartridge as described in Section 6.8.
6. Dispose of the removed filter cartridge; observe the local disposal
regulations.
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Fig. 12
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