Disinfection - Dometic RO 400 User Instructions

7 While the tap is still on (open), disconnect the elec-
trical plug, see Fig. B. Then turn off the tap. Now
leave the water purifier like this for about 10 hours
(e.g. over night).
8 At the end of the 10 hours, undo the container.
Discard its contents and rinse it with water.
9 Put the filter back in the container and follow steps
8–11 as described under "Replacing the filters"
(except that you put back the filter which has already
been used).
10 Work through all the steps of the "Flushing procedure"
This completes the descaling procedure. The water puri-
fier is ready for normal use again.

Disinfection

If the appliance has not been used for a time (several days),
there may be a build-up of microorganisms on the membrane
and the water may develop a certain odour. If this is the case,
it is advisable to disinfect the water purifier, and change filters
I and II.
The disinfectant, sodium hypochlorite 3.5%, odourless, can be
bought from supermarkets or from the chemist. The water has
to be odourless after the disinfection.
The disinfectant must be kept out of the reach
of children.
1 Disconnect the electrical plug, then plug it back in
again to make the appliance switch to flushing mode.
2 Undo filter container II as described under
"Replacing the filters", steps 3–7. Discard the filter.
3 Fill the container three-quarters full of lukewarm
water, and add 25 ml of the correct disinfectant, see
Fig. C.
4 Screw the container (containing the solution) back
onto the appliance with the aid of the filter spanner.
5 Turn on the tap for purified water and let the water
purifier operate for 45 seconds.
6 While the tap is still on (open), disconnect the electri-
cal plug, see Fig. B. Then turn off the tap and leave
the water purifier like this for about 30 minutes.
7 Restart the water purifier by reconnecting the electri-
cal plug to the wall socket, let it flush automatically.
8 Undo the filter containers and insert a new filter II.
Also change filter I according to "Replacing the filters".
9 Refit the front cover.
10 Work through all the steps of the full "Flushing pro-
cedure".
MAINTENANCE
B
C
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