Evolution Aqua ceTus Quick guide

Installation and Instruction Manual
Evolution House
4-6 Kellet Close
Wigan, WN5 0LP
United Kingdom
Ph: [phone]
Fax: [phone]
Web: www.evolutionaqua.com
Email: [email protected]

INTRODUCTION
-1-
Thank you for purchasing your Cetus Sieve. We are sure you will be delighted
with its performance. Your Cetus will have been shipped to you either as a
gravity or a pump fed unit.
What’s in the Box:
Figure Part No Description Pump Gravity
1 Cetus Cetus
1.1 Cetus Screen 300 Cetus 300 micron screen
1.2 FE112L 4- 4 (110-125mm) 90° rubber boot
1.3 FE85L 3- 3 (122-68mm) 90° rubber boot
1.4 Cetuspipe 4 PVC pipe connecting piece
1.5 FE111-049 4- 1.5 (110-50mm) rubber boot
Fig 1.3 Fig 1.5
Fig 1.4
Fig 1.2.
Fig 1.1
Fig 1
CUT OUT
To show
inside parts

OPERATION
-2-
Basic Operation of the Cetus:
The Cetus is a self adjusting sieve which can be installed either gravity fed or
pump fed, enabling the preltering of your pondwater before the water enters
your current lter system. It also can be used as a standalone unit to remove
leaves and other oating debris from your pond via a skimmer. It has been
designed to efciently and effectively remove large amounts of mechanical
waste from your pond.
The Cetus is compatible with all ltration systems including the Evolution Aqua
Nexus Eazy range. For gravity fed systems the Cetus has a weir which will
automatically adjust to the owrate of your pump. (Max owrate 18,000 L/hr)
Figure 2 is a picture of a gravity fed Cetus showing the inlet and outlets.
When the Cetus is used in front of any other biological/mechanical lter the
period in between cleaning will be extended. The biological process is improved
by the removal of organic matter which would consume oxygen and leach
ammonia and other compounds into the water.
Fig 2
Inlet
Outlet
Waste
Outlet

CETUS INSTALLATION
-3-
The Cetus needs to be installed on a solid level base so that it doesnt deect
under its own weight. It is recommended to use a 100mm thick concrete plinth,
although decking or paving slabs
can be used.
During installation a spirit level
should be used across the metal
plate on the weir to make sure the
Cetus is level as shown in Figure 3.
This will ensure that the water ows
evenly across the screen.
Pipe Sizes
Pipe diameter determines the pressure loss within the pipe, so for ows where
gravity is the driving force, large bore pipe (4” / 110mm) needs to be used.
Therefore in a gravity fed system, the inlet (the line from the bottom drain or
skimmer) needs to be 4” (110mm) and also in a pump fed system the return line
from the Cetus to your pond or lter needs to be 4” (110mm). When ows are
under 10,000 L/hr it is possible to use 3” (90mm) pipe instead.
Circulating Pump Installation
Fig 3
When installing your pump on a gravity fed system, the pump must be installed
lower than the level of the outlet to prevent airlocks within the pump.
Also if there is any chance of back siphoning, a one way valve must be
installed after the pump to prevent the Cetus lling with water.
Technical Information
Max Flow 18,000 L/hr
Inlet 4” (110mm) Gravity
1.5” (50mm) Pump
Outlet 1.5” (50 mm) Gravity
3” (90mm) Pump Need 4” adapter when ow over 10,000 L/h
Waste Outlet 3” (90mm)
Height 945 mm
Length 850 mm
Width 570 mm
Screen Size 300 micron

-2-
Cetus Gravity Fed System
With gravity fed installations, the Cetus needs to be installed so that the maximum
water level in the Cetus is the same height as the maximum water level in the
pond. To do this, the top of the Cetus needs to be installed 20mm above the
pond water level as shown in gure 4 below.
GRAVITY FED INSTALLATION
-4-
Fig 4
Fig 4a
Figure 4 shows the standard way of installing a gravity fed Cetus. Figure 4a shows
a gravity fed installation on a skimmer line.

PUMP FED - INSTALLATION
-5-
The Cetus when installed as a pump fed unit ,needs
to have the extra components (Figures 1.4 and 1.5)
connected as in Figure 5.
This will enable a 1.5” (50mm) hard pipe or hosetail
for exible pipe to be tted, connecting your pump
to the Cetus.
When pump fed, the Cetus needs to be installed
above water level as shown in gure 6 below.
Figure 6
Sideview of Pump Fed
Cetus Installation
Figure 6 shows the standard
way of installing a pump fed
Cetus.
While gure 6a shows the
way of installing a pump fed
Cetus on a skimmer line.
Fig 6a
Fig 5

DUAL GRAVITY FED - INSTALLATION
-6-
Two pumps would be used in this application. One for pumping the water from
the pondsieve to the lter and the second pump for pumping water from the lter
back to the pond. The major problem with this setup is that it is almost impossible
to balance the running speeds of the two pumps. This setup can cause the
gravity fed lter to overow or have the water emptied from the lter.
New Dual Gravity Fed System.
Figure 9 below shows how this system can be installed with a balance pipe to
allow the ow difference in pumps to equalise.
The 4” (110mm) pipe between the Cetus and the lter will allow water to pass in
the direction of the higher demanding unit (it is recommended that the pump
from the Cetus has a higher owrate than the pump from the lter.
This method of installation enables the user to prelter the pond water through
the pond sieve prior to being delivered into the next stage of ltration.
A typical gravity fed system is shown below in gure 7
To improve a typical gravity
fed lter, a gravity pond
sieve could be installed prior
to the gravity fed lter as
shown below in gure 8
Fig 8
Fig 9
Fig 7

DUAL GRAVITY FED - INSTALLATION
-7-
To explain this system in better detail, diagram 10 below is a top view schematic
of how to install a dual gravity fed Cetus and lter. The following points relate to
the ows within the system
1) Water leaves the pond via a 4” bottom drain and travels to the rst T-piece
2) Water then travels to the Cetus
3) Water is pumped from the Cetus to the lter
4) Water is pumped from the lter back to the pond
5) Excess water ows through the balance pipe back to the Cetus
There are huge benets to be gained by utilising this new evolution in pond
ltration
Running these units in this conguration maximises the interval between
cleans
Either unit can be switched off to carry out maintenance without affecting
the other
Both the Cetus and the lter can run independently of the other unit
N.B. We would like to express our thanks to Malcolm Green of Koi Water Garden
Limited for his help in this Dual Gravity setup
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Fig 10