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5.2 Preparations
Trouble-free operation of the lifting unit depends not least on a correct and impeccable
assembly. For this reason, the DIN EN 12056-4 gives the following recommendations:
1.
Rooms for sewage lifting units must be so large that next to and above all parts to
be operated and maintained a work room of at least 60 cm width or height must be
availabe. The installation room must be sufficiently illuminated and well-ventilated.
2.
The set-up area must be horizontal and level. The set-up area must be suitable for
the weight of the lifting unit.
3.
For room drainage with faeces lifting units, a pump sump (= deepening in the
ground) has to be arranged. Installation of a drainage pump in the pump sump is
recommended.
4.
Lifting units have to be secured against buoyancy and twisting.
5.
All pipelines have to be laid in such a way that they can run empty on its own. Seen
in flow direction, the lines must not be narrowed.
6.
All line connections on sewage lifting units must be designed in a sound-insulated
and flexible way. The weight of the lines has to be absorbed on the part of the build-
ing site.
7.
A shut-off valve has to be arranged on the inlet side and on the pressure side behind
the backflow preventer.
8.
No other connections may be carried out on the pressure line. The minimum nominal
width of the pressure line is DN 80.
9.
The pressure line of the lifting unit has to be guided with a bend over the locally
specified flood level. This regulation is also applicable to the drainage line with the
manual membrane pump and for the pressure line of the submersible pump in the
pump sump.
10. Pressure lines of sewage lifting units must not be connected to down pipes. They
must always be connected to vented manifolds or underground pipes.
11. Faeces lifting units have to be equipped with a check valve.
i
12. The pressure line volume above the check valve to the backflow loop must be smaller
than the useful volume of the lifting unit. The useful volume of the lifting unit SANICU-
BIC 1 FRK ranges between 19 litres (lowest switch-on level) and 45 litres (highest-
possible switch-on level in case of inlet from above). 1 m pipeline DN 90 has a content
of approx. 5 l water – 1 m pipeline DN 100 would have a content of almost 8 l water.
13. Faeces lifting units are to be generally vented above the roof.
14. In dry and well-ventilated rooms, electrical devices which are not flood-proof, such as
switch boxes and alarm transmitters, must be installed flood-proof.
15. Lifting units should not be operated in the vicinity of living and sleeping rooms.
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SANICUBIC 1 FRK
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