8
Fig. 2: Venturi pump DC Runner 1.1 incl. 3D-needle wheel
1. 4 Rubber feet
8. Seals for pressure connection
2. Retaining plate
9. Pump lock
3. Pump motor
10. Air intake nozzle
4. Rear ceramic bearing
11. Connection for air hose
5. Rotor incl. 3D needle wheel
12. Reduction for air intake nozzle
6. Front ceramic bearing
13. Pump basket
7. Housing’s sealing
14. Sealing plug
The pump DC Runner 1.1 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 max. 7 watts, protection rating is IP X8. To open the pump,
remove retaining plate and release the pump lock (Fig. 2, No. 9) by turning it.
The pump must be mounted
with the suction side upwards (see Fig. 1), otherwise the pump may stop.
DC Runner Controller 1.1
The included
DC Runner
Controller is switched between power supply and pump to adjust the output.
The
power can be adjusted by pressing the +/- buttons, the level is displayed by LED. If you press the button
„FEED“, the output will stop for 10 minutes. There is an automatic shut off if there is no water for 2 minutes.
Pull the plug and then re-insert it to take the controller back into operation. Controller, plugs and sockets have
to be kept dry.
0 - 10 V: The pumps must be operated with at least 60% power, otherwise damage will occur.
When inserting
the plug into the 0 - 10 V
socket
(
Pict
. 3, No. 4) it will be switched to 0 – 10 V automatically, this will be
indicated by two lit LEDs.
Fig. 3: DC Runner Controller 1.1
1.
–Button
2.
LEDs
3.
Power supply
4.
0-10 V socket
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 skimmer EVO 500 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
