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1. Drilling for water cooling
Fig. 4: Rotor of Eco Runner incl. cover plate Rotor
4. Starting the skimmer
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Put the skimmer in the filter sump and check that the sealing rings (Fig. 3, No. 6 and 7) for the
unions are in place.
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The air tube has always to be installed upward over the water level in the skimmer.
This air
tube must not hang down.
Therefore, it should always be connected to the sound absorber
(Fig. 1 and 2, No. 5). Connect the bottom end of the tube to the air intake of the pump. The air
inflow (Fig. 1 and 2, No. 8) should principally be fully open. An adjustment of the inflow would
change the water flow at the same time and therefore, should only be done in exceptional
cases.
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Push the foam cup into the appropriate recesses and turn it to a complete stop (aCone 3,0).
With aCone 1.5, the foam cup is simply plugged in.
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The ideal water level in the filter sump is 13 ± 1 cm for the aCone 1.5, 17 ± 1 cm for the aCone
3.0. With higher or lower water levels, airflow rate and skimming power will decrease. The filter
sump should either contain an overflow edge that keeps the water level in the ideal range or it
should be equipped with an automatic refilling unit, such as Aqua Medic Niveaumat. The drain
from the skimmer has to run freely into the aquarium or filter sump.
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The skimmer will be filled by starting the venturi pump. To do so, first of all open the lower
drain valve (Fig. 1 and 2, No. 14) completely.
With high water load, the valve can also be
unscrewed completely. If the water level remains constant, it has to be closed only so far until
the skimmer is filled to half or two-thirds. Afterwards, wait for some time and make the fine
adjustment with the upper adjusting screw, best one to two hours later. A water level too high
leads to very fast overflowing of the foam cup. Here, special caution is required, if one connects
the outflow nozzle of the foam cup via a hose with a container standing beside the filter sump.
There is the danger that the container overflows if the skimmer cooks over. Thus, this would
also lead to strong loss of water in the filter sump whereby other devices could run dry and
therefore, could be damaged.
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Ensure, when filling the skimmer that the water level of the aquarium resp. filter sump is not
lowered too much. Possibly, keep freshly prepared saltwater ready for refilling.
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After first use or after cleaning the skimmer, it takes some time for the initial foam to build up
in the reaction pipe of the collection cup. This is because the cleaned acrylic initially reacts with
the water until a build up of fatty acids naturally takes place.
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After approx. 24 hours, the foam should be pushed slowly and evenly into the collection cup.
The quantity of liquid and organic substances depends on the pollution of the aquarium.
5. Maintenance
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Foam cup:
Depending on the organic load, the cup should be cleaned daily to weekly.
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Skimmer pipe:
This only needs occasional cleaning. We recommend intervals from 6 to 12
months.
