Aqua Medic EVO 1001 Mode D'emploi page 8

Fig. 2: Venturi pump DC Runner 1000 incl. needle wheel
1. Rubber feet (4 pcs.)
2. Bottom plate
2a. Adapter
3. Pump motor
4. Rear ceramic bearing
5. Rotor incl. needle wheel
6. Front ceramic bearing
7. Housing's sealing
The pump DC Runner 1000 is operated by an electronic safety transformer at AC 110 – 240 V / 50 – 60 Hz and
24 V DC output. Power consumption of the pump is 12 watts, protection rating is IP X8. To open the pump,
remove bottom plate and release the pump head (Fig. 2, No. 9) by turning it.
3. Theory
Protein skimming is a method of physical water treatment. It uses a phenomenon known from our daily
experience: the adhesion of surface active substances to air water layers. If we add a drop of oil to a water
surface, a thin film is produced with a thickness of only one molecule. Surface active compounds like proteins
behave in the same way. The EVO 1001 uses its air bubbles to create a large water surface for the waste
substances to attach themselves to. These air bubbles are forced into the reactor-pipe in such a way that they
undergo a long contact time within the counter-current. Enriched with organic substances, they rise to the top
and form a firm foam that is dehydrated and pushed into the collection cup. This method removes organic
wastes from the aquarium water before they become part of the biological waste treatment cycle.
The venturi pump DC Runner 1000 draws water out of the aquarium or filter chamber, mixes it with air in the
pump housing which is then cut into small air bubbles by the Aqua Medic needle wheel. This water/air mixture
is then pumped into the reaction pipe where organic substances are taken up by air bubbles. Foam is formed
and pushed into the foam cup. The purified water leaves the skimmer via outlet and is directed back to the
aquarium or filter sump by the discharge (Fig. 1, No. 8).
4. Set-up
The EVO 1001 is a skimmer that can be directly mounted on the aquarium edge "Hang on", (Fig. 4).
Fig. 4: EVO 1001 in "Hang on" operation
8. Seals for pressure connection
9. Pump lock
10. Air intake nozzle
11. Connection for air hose
12. Reduction for air intake nozzle
13. Pump basket
14. Sealing plug
15. Spacer ring
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