Installation and operating instructions Wilo-Port 800
47
INSTALLATION English
The top sand/gravel layer (compacting layer) must reach as far as
the cover flange.
Piping must be properly embedded, filled and sealed in accord
-
ance with the applicable national standards.
2. Align the surface level including substructure with the pump cover.
NOTE:
If the surrounding ground is made up of cohesive material
(e.g. topsoil), for better assimilation to the surroundings can be
achieved by filling an compacting the "substructure to surface
level" with this material (max. grain size 20 mm).
Using the D400 pump cover
Fig. 9:
Filling the pit (with D400 pump cover)
1 Underlay
2 Levelling layer
3 Sand/gravel layer with no sharp-edged content,
grain size 0...32 mm, max. layer thickness 300 mm
4 Substructure as for traffic surface, but at least gravel or rubble layer, min.
layer thickness 400 mm and a friction angle of >37.5°
5
Sand layer, max. grain size 16 mm, minimum layer thickness 100 mm
6 Load distribution plate
7
Concrete adjusting rings for pump chamber extension
8
Traffic surface substructure
9
Class D400 pump cover
1.
Fill the pit a layer at a time (layer thickness max. 300 mm) with
coarse-grained soil all the way around to an even height (sand/gravel
with no sharp-edged content, grain size 0-32 mm) as far as the base
of the substructure and compact properly (Dpr. 97%). Compact by
hand at the pump chamber wall, ensuring that the pump chamber is
in a plumb-vertical position and avoiding deformation.
Piping must be properly embedded, filled and sealed in accord
-
ance with the applicable national standards.
2. Install the substructure for the load distribution plate in the same
way as the substructure for traffic surfaces in accordance with the
valid directives. Minimum requirement:
•
Gravel or rubble layer with a min. layer thickness of 400 mm and
a friction angle of >37.5°
• The substructure (if not planar) should have an outer diameter of
at least 2.90 m at the base.
There must be a protective sand layer (max. grain size 16 mm) of
at least 100 mm between the substructure for the load distri-
bution plate and the body of the pump chamber or the pump
chamber extension.
3. Place the load distribution plate centrally.
Make sure that the load distribution plate has a full-faced contact
with the substructure.
4. If an additional pump chamber extension with concrete rings is
required, they can now be placed centrally on the load distribution
plate. To ensure a solid and full-faced contact between the concrete
rings and to minimise additional water ingress by ground water or
surface water, a thin layer of mortar must be applied to the mating
surfaces on the concrete rings.
2
4
6
7
8
9
1
3
max. 570
min.
2900
min.
100
min. 400
5
Fig. 9
