Replacing The Membrane; Turning Off The System - Dennerle OSMOSE PROFESSIONAL 190 Notice D'emploi

5 Using the osmosis water
Osmosis water is very pure and therefore contains practically no hardness at all, which is necessary to buffer the pH value.
For this reason osmosis water should always be set to the required hardness in the aquarium before use. To do so, you can
mix it with tap water, provided that the tap water does not contain any harmful substances (e.g. copper, nitrate, phosphate).
The better and safer option is to specifically increase the hardness of the osmosis water using DENNERLE Osmosis
ReMineral+. This enables you to set the water hardness and mineral content precisely according to the needs of your
aquarium fish. DENNERLE uses only highly pure mineral salts of pharmaceutical quality.
Recommended water values:
Fish
Discus
Tropical communal aquarium with neons,
scalares, long-whiskered catfish, etc.
Malawi Cichlids
Tanganyika Cichlids
Please consult the relevant specialist literature to find out about the care needs of specific fish or consult your local pet
specialist.

6 Turning off the system

Turn off the tap. The system can also be automatically deactivated using a standard solenoid valve, which can be instal-
·
led subsequently in the hose between the tap and the active carbon filter.
We recommend using the system at least once a week for 30 minutes. If the system has not been used for a
·
period of more than two weeks, the osmosis water should be drained off for approx. 1/4 hour before being used
again. This will flush out any bacteria that may have got into the system.
· If the system not used for longer periods, please ensure that the membrane is not allowed to dry out. To this end it is
advisable to plug the hose ends for the osmosis and residual water with a rubber stopper.
7 Maintenance
The DENNERLE osmosis system is virtually maintenance-free. To ensure a
long membrane life, it is important to remove the residues that build up on
any osmosis membrane over time by means of regular rinsing. The system
closed
is also equipped with a convenient flushing valve
rinsed regularly, lime scale will become deposited on the membrane surface,
open
which will result in diminished performance and premature failure of the
system.
Rinsing the membrane:
· Open the flushing valve while the system is in operation and flush as described in the following table:
Water hardness
soft
medium
hard
very hard
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Total hardness Carbonate hardness
3 – 5 °d 1 – 3 °d
4 – 7 °d 2 – 4 °d
3 – 6 °d 5 – 8 °d
8 – 12 °d 16 – 18 °d
. If the membrane is not
Total hardness Rinsing intervals
less than 7 °d 15 minutes every 4 weeks
7 – 14 °d 15 minutes every 3 weeks
14 – 21 °d 15 minutes every 2 weeks
above 21 °d 15 minutes every week
We recommend that you rinse the membrane for 1 minute before and after producing osmosis water. In
·
general, the following applies: The harder the water the more often and longer you will have to rinse the membrane
in order to ensure consistently high performance.

8 Replacing the membrane

If used properly, the modern DENNERLE polyamide/polysulphone membrane will have a service life of 3-8 years. The ser-
vice life depends in particular on the quality of the tap water, the operating conditions, the intensity of usage, membrane
care by means of regular rinsing as well as the timely replacement of the pre-filter.
The membrane should be replaced if
(1) the conductivity or hardness of the osmosis water is greater than 25 % of the tap water, or
(2) the produced osmosis water drops to below 70% of the original amount, despite otherwise correct use (temperature,
pressure, filter not blocked). Before measuring these values, the device should have been rinsed for 15 minutes and
have been in operation for at least 2 hours.
Replacing the membrane:
· Turn off the tap.
· Unscrew the coupling ring from the angle fitting on the membrane
container lid and extract the hose from the fitting.
· Unscrew the membrane container lid using the spanner provided
Carefully remove the membrane using a pair of pliers.
· Lightly grease the two O-ring seals on the new osmosis membrane with
Vaseline (chemist). Insert the membrane (the two O-rings first) into the
membrane container as far as it will go
· Likewise, lightly grease the O-ring for the membrane container lid with
Vaseline. Screw on the container lid tightly and reconnect the hose with the
hose insert. Please note the general tips on fittings (see section 10)!
· Turn on the tap and check that the device is watertight.
· Allow the new membrane to run for 2-3 hours. During this period, DO NOT
use the osmosis water.
9 Replacing the fine filter or active carbon filter
9.1 Fine filter
You will notice whether the fine filter is blocked if the flow rate declines significantly.
Check fine filter:
· Release the hose screws on the membrane container lid.
· Turn on the tap and measure the volume of water flowing out of the outlet of the fine filter: Replace the fine filter
if the volume is less than 1 l/min.
The fine filter should generally be replaced once per year; more often in case of poor water quality.
·
9.2 Active carbon filter
· The active carbon filter should be replaced once per year, in case of heavily chlorinated tap water (smells of chlori-
ne!) every 6 months.
.
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