English
The areas directly adjacent to the pump chamber wall and the cover
flange of the pump chamber and the pump chamber extension must
be filled manually and compacted (shovel, hand rammer).
In addition, the pump chamber and any pump chamber extension
installed must be held in position and may not rise up. If necessary,
this can be ensured by filling the pump chamber with water before
filling and compacting.
Using the A15 and B125 pump cover
Fig. 8: Filling the pit (with A15 and B125 pump cover)
1
Underlay
2
Levelling layer
Sand/gravel layer with no sharp-edged content, grain size 0...32 mm,
3
max. layer thickness 300 mm
4
Concrete adjusting rings for pump chamber extension
5
Surface level substructure
6
Pump cover class A15 or B125
The class A15 and B125 pump covers can be directly fitted in the
cover flange on the pump chamber or the pump chamber extension
using the cover frame supplied (maximum outer diameter 825 mm).
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) and compact
properly (Dpr. 97%). Compact by hand at the pump chamber wall
and at the cover flange on the pump chamber and pump chamber
extension, ensuring that the pump chamber is in a plumb-vertical
position and avoiding deformation.
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 and compacting the "substructure to surface
level" with this material (max. grain size 20 mm).
Using the D400 pump cover
NOTE:
It is not possible to use the class D400 pump cover for the pump
chamber "Port 600...E".
50
Fig. 8
WILO SE 11-2015 V05 DIN A4
INSTALLATION
6
5
4
3
2
1