5.1.1
Gravity fed system
A, G
System specific requirements
The correct installation and constant water level in the pond are important prerequisites for ensuring
optimum and fault-free operation of the gravity fed system.
Making a filter pit:
Excavate a pit of sufficient dimensions to accommodate the filter system.
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Horizontally align the base slab.
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Secure the walls of the pit from falling in (with masonry or concrete).
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Ensure that the pit is protected from flooding. Provide a rain water drain.
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Installing the filter system:
Determine the max. water level of the pond.
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The base slab supporting the filter system must be 685 mm below the max. water level (max.
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tolerance: -20 mm).
Keeping the water level constant:
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A constant water level in the pond is necessary for operating the gravity fed system. Tolerances of
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up to -20 mm from the max. water level are permitted.
If the max. water level in the pond is exceeded, water flows out of the Drum Filter Module via the
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dirt channel until the max. water level is reached again.
If the water level goes below the max. water level by more than 20 mm, it is not possible to
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achieve optimum or fault-free operation.
Install the OASE ProfiClear Guard refill system. The ProfiClear Guard refill system automatically
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supplies water to the pond if the water level goes below the specified water level.
5.1.2
Pump fed system
B, C, H
System specific requirements
Horizontally align the base slab.
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Install the Drum Filter Module 150 mm higher than the subsequent Moving Bed Module so that the
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connections of the two modules (outlet and inlet) are at the same height.
Tip: Use three commercially available concrete slabs, each measuring 500 × 500 × 50 mm.
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Position the outlet of the filter system such that the water level in the drum filter module is 230 ... 350
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mm below the edge of the container.
Otherwise, optimum or fault-free operation will not possible.
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Position the inlet in the pond (e.g. via a water course or waterfall) so that it is lower than the outlet of
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the filter system.
- GB -
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