Installation And Assembly; Operation; Assembly Requirements - Kessel NS 3 Installation And Operating Instructions Manual

During the intermediate storage of the separator and until
completion of the installation work, suitable safeguarding
measures must be taken at the building site to prevent ac-
cidents and damage to the separator.
The chapter "Safety instructions" must be heeded!
5.1 Installation conditions
Installation must only be carried out by companies who are in
possession of the technical experience, suitable implements
and equipment as well as adequately trained personnel.
A measurement of the soil conditions with a view to its structu-
ral suitability must have been carried out (soil classification for
structural purposes DIN 18196). The maximum groundwater
level that can occur must be established. A sufficient drainage
of seepage water is compulsory for soils that are impermeable
to water. The types of loads occurring such as maximum tra-
velling loads and installation depth must be clarified.
The separator for underground installation should be installed
outside the building as close to the drains as possible. If neces-
sary, the inlet connection pipes to the separator should be
routed heat-insulated or heated. The necessary frost-free in-
stallation depth is achieved using telescopic upper sections
and adaptation to the inlet and outlet pipe (sewer). The covers
for the load classes A / B / D are odour-tight and correspond to
DIN EN 124.
Wastewater pipes and fittings made of the following materials
may be connected to the inlet and outlet of the separator
system:
- Polyvinyl chloride (PVC-U ) acc. to DIN EN 1401-1
in connection with DIN 19534-3,
- Polyethylene (PE) acc. to DIN EN 12666-1
in connection with DIN 19537-3 or
- Polypropylene (PP) acc. to DIN EN 1852-1
The specifications in DIN EN 124 and DIN EN 473 must always
be fulfilled.
In- and outlet must be easily accessible for cleaning and main-
tenance. The use of locked or ventilated covers is prohibited.
Pumping or lifting stations may not be installed in the inlet pipe
to the separator. If these are necessary, they must be installed
downstream from the separator.
KESSEL recommends providing an overhang for safe operation
of the system, as well as mounting a warning system. The ne-
cessary installation conditions should be created before the
excavation pit is backfilled.
Separator systems must be installed in such a way that the
upper edge of the covers is sufficiently high compared with the
decisive level of the surface to be drained (see Fig. 1).
On account of the difference in density between light liquids
and water, the level of liquid in the separator is always higher
than the water level in the draining system.
The decisive level is the maximum rainwater storage level when
washwater and rainwater are discharged together.
If only washwater is discharged, the upper edge of the lowest
drain installed is applicable as the decisive level. The necessary

5. Installation and assembly

overhang depends on the nominal size of the separator (see
the Technical Data chapter).
If this overhang condition cannot be met, a warning system
must be installed for light liquids.
Drainage area
Entwässernde Fläche Elevated
area
Überstand/
Überhöhung
Illustration 1
Separator system ready for operation
Light liquid separators must be protected on site from backwa-
ter from the sewer.
KESSEL recommends taking the following precautions:
Drainage point Separator
Inside a building Overhang available
Inside a building No overhang
Outside a building Overhang available
Outside a building No overhang
Please note:
Weather-related influences or cooling of the tanks during the
installation phase (caused by filling with cold water) can lead to
deviations in dimensions from the catalogue specifications in
the case of cisterns, separators installed in the ground and
septic systems. For this reason, please check the height spe-
cifications in particular for their actual size before installation.
34
Surface level covers
Oberkante Abdeckung
Backwater protection
Backwater valve
Backwater valve
Backwater valve
Lifting station