
Certikin SLX Filter Manual
* Colour and connection details may vary on some models

English
IMPORTANT: This instructions leaflet contains important information regarding the
correct installation procedure and use of your bobbin wound sand filters. We
therefore recommend that both the installer and users carefully read these
instructions before attempting assembly and commissioning.
GENERAL SAFTY INSTRUCTIONS
These symbols indicate the possibility of danger if the respective
instructions are not followed.
DANGER. There is a risk of injury to persons and of damage to property if this
warning is not heeded.
CAUTION. There is a risk of damage to the equipment or the facilities if this
warning is not heeded.
GENERAL INFORMATION
These filters have been designed for the filtration of swimming-pool water, aquatic
parks and generally for use in water treatment where removal of suspended solids is
required.
The quality of filtered water will depend on: the depth of filter bed, the type and
quality of the filter media, and the selected rate of filtration.
In public swimming-pool installations, specific national regulations must be
respected.
FILTER SPECIFICATION
The filter is made of polyester resin reinforced fibreglass.
Internals:
Water enters the filter via a conical diffuser at the top of the tank. Having passed
through the media bed the filtered water is returned to the pool via the underdrain
system usually consisting of collector arms (also known as ‘candles’ or
laterals’),which have fine slots to prevent media from passing through them..
Filters with a nozzle plate underdrain system in place of the above are equipped with
50 nozzles per m2.
The filters are available in a range of different filtration rates from 20-50m3/h/m2 for
different applications, with a working pressure of either 2.5 or 4 bar. Maximum
operating temperature is 50oC. Other specifications are available on request.

CAUTION : For the bobbin wound filter with nozzle plate, the maximum
admitted pressure is 1 b under the nozzle plate when back-washing.
Fig. 1
9
10
12
1
4
3
2
5
6
8
7
11
1. Air bleed connection
2. Bolted lid
3. Lid ‘O’ ring
4. Conical diffuser
5. Water in
6. Filtered water out.
7. Collector arms.
8. Drain port..
9. Filter base.
10. Internal air bleed.
11. Gravel
12. Silica sand

INSTALLATION AND ASSEMBLY
Fig. 2
Before removing the filter from packaging check that it has not been damaged
during transport or unloading.
- Place filter in its final location.
- Assemble the valve battery and connect to filter.
- Install battery supports adjusting height and level as required.
- Connect ‘water in’ to pump delivery line.
- Connect ‘water out’ to pool return line.
- Connect rinse according to local regulations.
- Connect air bleed
IMPORTANT: PLEASE READ BEFORE FILLING THE FILTER WITH MEDIA
- Check that the internal parts, collector arms etc., have not been damaged in
transit.
- Fill the filter one-third with water before filling with media.

FILTER POSITION
The filter base should be positioned on a perfectly flat and level surface.
The filter should be installed in a readily accessible place for ease of inspection and
maintenance.
INSTALLATION OF THE VALVE BATTERY
The valve battery may be supplied with 4 or 5 valves depending on the selected
model.
Threaded union (fig 4)or flanged connections (fig 5) are supplied depending on the
connection size
Fig. 4 Fig. 5
MIn. 60 cm.
250
MIn. 60 cm.
Min. 80 cm.
À Ecloument
Rétour

UNLOADING THE FILTER
Do not lift the filter by the lid bolts!
Fig. 1 Fig. 2 Fig. 3
Check that the filters are correctly positioned.
Place the battery and its gaskets correctly to avoid any leakage.
Connect up the valve battery, after checking for any transit damage.
Secure the bolts.
PRESSURE GAUGE PANEL
Fig. 6

Normal pressure when filter is clean:
- Inlet pressure: 0,6 – 1 bar.
- Outlet pressure: 0,4 – 0,6 bar
When the pressure differential between the two gauges is equal to or greater than
0.5 bar then a backwash should be carried out.
BATTERY SUPPORTS
Pipe battery supports must be installed to prevent the filter from having to support
the weight of the battery and water etc.
Take care when adjusting clamps to allow for material expansion during
installation.
Fig. 7