Premier Tech Aqua
®
11/12
Prefilter Maxi Plus
DORW2107- 10.02.2016
6. Installation walk-on version
Excavation pit:
Care must be taken to avoid damage to existing pipework, vegetation or
buildings, when installing the MaxiPlus filter. The latter is especially important when there is a
deep installation of the MaxiPlus filter.
Filling material:
The filling material should be load-bearing, well compacted, frost free, ideally
this would be a wide-graded sand-/gravel mixture (e.g., grain size 0/32). Do not backfill with
material such as topsoil, rubble or clay soil. Excavated soil can only be used if it corresponds to
the above mentioned criteria.
Connection pipes
- it is very important that the outflow pipe has an incline equal to or greater
than the incline of the inflow pipe to the filter. Failure to observe this will cause the filter to back
up/overflow during heavy rainfall. This also applies to the auxiliary overflow.
Installing the Maxi Plus filter
1. Excavate the hole.
2. Lay a 100 mm thick bed of filling material,
compact it well (machine, or three operations with
hand tamper 15 kg / squared timber or similar)
3. Insert and adjust the filter, attaching the pipe
connections.
4. Fill in the filling material in about 100 mms
thick layers. The thickness of the filling material
around the filter body should be about 100 mms.
The rest of the layer can be filled with excavated
earth. Every layer has to be compacted, e.g. with
a hand tamper 15 kg / squared timber or similar
mechanical device.
This kind of filling should be carried out up to 100
mms from the top edge of the ground.
5. The rest filling can be chosen arbitrarily
A Filling material according to point 6
B Filling with excavation or similar
C upcoming ground
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The contents of the technical documentation are a component of the guarantee terms
Planning and installation regulations are to be followed, as well as the accident prevention regulations.
