63
MAINTENANCE
C
D
4
Close the shut-off valve at the water connection. Undo
the feed hose from the feed water connection and the
reject water hose from the reject water outlet, see fig
C
.
5
Put the ends of both the reject water and feed water
hoses in the bucket. Make sure they are both below the
surface throughout the descaling procedure, see fig.
C
.
6
Plug the appliance back in and leave the water purifier
to flush out automatically. Unplug it again after
approximately 30 seconds. (During the flushing
procedure the RO 400 sucks the solution up from the
bucket. The volume in the bucket is reduced by the
same volume of liquid as was in the filter holders, but it
does not entirely disappear).
7
Wait 1 minute then repeat step 6.
8
This time leave the agent to work for 2 minutes, then
repeat step 6 again.
9
Wait for 2 minutes and then repeat step 6.
10 Reconnect the feed water hose to the water connection
and the reject water hose to the reject water outlet, see
fig.
D
.
11 Plug the appliance back in and leave the water purifier
to go through a complete automatic flushing procedure.
Leave the RO 400 running purified water into the reject
water outlet for about 10 minutes and then unplug the
appliance.
12 Wait for one minute, then plug the appliance back in and
leave the water purifier to complete a full automatic flush
cycle. Leave the RO 400 to run pourified water into the
reject water outlet for about 10 minutes and then unplug
the appliance.
Put the equipment back as it was and reconnect the purified
water hose to another appliance or item of ancillary
equipment.
The descaling procedure is now complete. The RO 400
is ready for normal use.