Ilex Filtration Biodrum 20 +31384447366
7
Subject to typesetting and printing errors
•
The electronics contain components that switch
and must be suspended in a failure free room.
Specific pumps or UV units may have a negative
impact on the operation of the electronics.
•
The filter must be protected against freezing when
there is frost. If the filter is put out of service, all
pipes must be emptied. If the filter stays in service,
the pipes for the rinse water must be protected
against freezing. Damage caused by water freezing
is not covered by the warranty.
7.2
Gravity connection
If water flows into the drum due to gravity, the
maximum water level must be correctly aligned with
the drum. The maximum and minimum water levels
are indicated on the inside of the filter and must be
between these values and, by preference, as close
as possible to the maximum level (see the figure).
The filter has 3 x 110 mm inlets and 1 x 110 mm
outlet. In addition, there is a connection for the
flushing pump.
Attention:
It is essential that sufficient water arrives in the
filter when installing on a gravity basis to ensure its
correct operation! If insufficient water arrives
because the system has been installed incorrectly,
you run the risk of the waste pump running dry and
that the rinse cycle is switched on very frequently.
It applies as a general rule that approximately 10
m3/ hour can flow per 110mm of pipe in a gravity
set-up. This quantity, however, will depend on the
length of the pipe and the maximum height
difference between the pond water and filter. In
some cases, for example, only 3m3/hour can flow
per pipe.
Therefore, pay attention to the following
issues for a maximum flow per pipe:
The pond water level may not drop too much. If the
pond water level drops 1cm, the flow rate can
already drop by 1 or 2m3/hour per pipe. There is a
risk that insufficient water arrives in the filter when
there are considerable fluctuations in the pond
water level (due to evaporation, water change or
when you rinse the filter). If your pump pumps
away more water than arrives in the filter, the drum
filter will be emptied, the sensor will run dry and the
filter will start the rinse cycle.
If the supply pipes are long and with many bends,
there are many friction losses and much less can
arrive instead of 10 m3/hour per pipe system.
Inlets that are not used must be plugged.
Discharge of dirt:
The dirt is sprayed off by the mesh nozzles into the
rinse duct. The rinse duct can be connected to the
sewer system or discharge drain directly.
Pond return:
The pump must be connected to a 110mm discharge. If
required, use a flexible connection for a good transition
to your pump. A flexible connection will reduce
vibrations.
Make sure that you never install a larger pump than
recommended for the filter. If the pump you have
selected is close to the maximum of the filter, you
must ensure that sufficient water arrives and that the
filter is not suctioned dry.
7.2.1
Sensor setting for the rinse cycle
The sensor will already have been installed for use as a
gravity sensor and in such a way that it will operate
correctly in most situations. You must, however, check
its correct operation after installation and adjust the
float as correctly as possible.
