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Change a bestmax PREMIUM cartridge and flush it in: BWT bestmax PREMIUM S, BWT bestmax PREMIUM V and BWT bestmax PREMIUM M

Before you start

Tools
10 litre container, total hardness drop test (or the water supplier's figure)
Supplies
BWT bestmax PREMIUM filter cartridge (S (FS22P00A00), V (FS23P00A00) or M (FS24P00A00), same size as before)

Warnings

Steps

  1. Shut the stop valve upstream of the filter.

    From the manual: “Close the existing check valve before replacing the filter cartridge!”

  2. Unscrew the old cartridge clockwise; rotating the head 90 degrees in its bracket makes this easier.

    From the manual: “Unscrew the filter cartridge out of the filter head in a clockwise motion”

  3. Check whether your water's total hardness has changed, and adjust the bypass and change interval if it has.

    From the manual: “Check whether the total hardness of the natural water has changed and adjust the replacement intervals and bypass setting”

  4. Get the total hardness from the water supplier or with the drop test.

    From the manual: “The total hardness can be requested from the water supplier or established by means of a quick test”

  5. Pick the bypass (0-3) from the tables; for machines that make steam BWT lists 3 up to 10 °dH, 2 at 12-14 and 1 from 17.

    From the manual: “Hot beverage preparation with steam generation”

  6. Turn the head's cap until its mark shows that setting and it clicks home (the default is 2).

    From the manual: “Turn the cap left or right until the mark displays the required value and the cap snaps into place.”

  7. Lock the setting with the warranty label from the box. Only when: after changing the bypass

    From the manual: “Once the bypass has been set, it can be fixed using the enclosed warranty label.”

  8. Take the new cartridge out of its film and pull off the hygiene cap.

    From the manual: “Take the filter cartridge from the packaging film and remove the hygiene cap.”

  9. Mark the fitting date and a change-by date no more than 12 months later on the cartridge's rating plate.

    From the manual: “mark the installation date and the replacement date (no later than 12 months) on the filter’s rating plate”

  10. Screw the new cartridge into the head anticlockwise.

    From the manual: “Turn the filter anticlockwise in the filter head”

  11. Open the stop valve.

    From the manual: “Open the check valve. 5. During commissioning”

  12. Flush and bleed it with at least the minimum volume: 1 l for S, 3 l for V, 5 l for M.

    From the manual: “During commissioning, the filter must be flushed and bled”

  13. Flush through the machine's filter start-up function if it has one. Optional

    From the manual: “the filter system can be bled/flushed from the appliance”

  14. Or flush through a flushing valve fitted at the filter outlet. Optional

    From the manual: “the filter can easily be bled and flushed via this flushing valve”

  15. Otherwise close the stop valve and pull the outlet hose off the machine. Only when: if neither the machine nor a flushing valve can flush it

    From the manual: “Disconnect the water outlet hose from the appliance, e.g. coffee machine.”

  16. Hold the hose end in a 10 litre container and open the valve. Only when: if neither the machine nor a flushing valve can flush it

    From the manual: “Attach the end of the hose to the 10 litre container below.”

  17. Let it run until the water comes out clear and without bubbles. Only when: if neither the machine nor a flushing valve can flush it Repeat until clear and bubble-free

    From the manual: “Flush/bleed the filter system until bubble-free and clear filtered water emerges”

  18. Close the valve, reconnect the hose to the machine and open the valve again. Only when: if neither the machine nor a flushing valve can flush it

    From the manual: “Refit the water outlet hose onto the appliance.”

  19. Check the filter and every connection for leaks.

    From the manual: “Check the filter system and all connections for leaks.”

  20. Throw the old cartridge away according to local rules.

    From the manual: “Dispose of the removed filter cartridge; observe the local disposal regulations.”

Sources

Researched on .

Published: the sentence is on the maker’s own page or in the maker’s own document.

Applies to

  • BWT bestmax PREMIUM S
  • BWT bestmax PREMIUM V
  • BWT bestmax PREMIUM M