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NOTICE
Please note that the pressure test of the pressure line must not be carried out against the shut-off
valve.
When all lines have been connected and checked for tightness, the excavation pit can be filled.
To fill the excavation pit, filling sand or gravelly sand has to be used in conformity with the civil engineering/relevant reg-
ulations.
NOTICE
Use gravelly sand only up to a grain size of 32 mm, provided that the excavation ground does not
correspond to the particle size group 0 to max. 32 mm.
Cohesive soil, rubble, rock and sharp-edged grain must not be used!
The filling material has to be introduced in layer thicknesses of max. 30 cm and be equally condensed. In the event of a
lowering of groundwater level of the excavation pit, condensation of the filling material can take place by covering with
mud and by adding water with simultaneous operation of the draw-down device.
NOTICE
Use friable filling material!
To ensure buoyance safety with the soil type of clay, the tank must be filled with sand, clay or concrete from outside. In
order to exclude deformation of the PE tank, high filling from one side must be avoided by all means.
Only after final completion of the tank, including filling and condensing the excavation pit, the potentially used water table
drawdown system may be switched off.
The protruding piece of the top piece has to be well back-filled and condensed.
In order to ensure safe function of the system, it is necessary that the tank is levelled after filling.
Absolutely observe the notes in the plant when using a Class D shaft cover. See Installation proposal in Annex, page 18.
5 . COMMISSIONING
Before commissioning, all connections must be checked again for correct installation and tightness. The shut-off valve
must be open.
To commission the pump, please read the separate operating instructions of the pump as well as the switchgear.
6 . MAINTENANCE / SERVICING
DISCONNECT THE SYSTEM BEFORE ANY INTERVENTION !
Maintenance includes regular visual inspection of the complete system. During the process, switching cycles of the pumps
are observed and all piping parts and fittings are checked for function and tightness. Please refer to the operating instruc-
tions of the pump with regard to the maintenance instructions. After maintenance has been carried out, the maintenance
interval indicator of the control can be reset. Maintenance should be carried out only by authorised specialist companies.
7 . MALFUNCTIONS; CAUSES AND TROUBLESHOOTING
DISCONNECT THE SYSTEM BEFORE ANY INTERVENTION !
In the event of malfunctions of the pump, please refer to its operating instructions. In case of leaks of the piping or failure
of the fittings, the relevant parts should be replaced (exchanged).
8 . WARRANTY
As manufacturer, we provide for this product a warranty of 24 months from the date of purchase providing it has been
correctly installed as per operating installation instructions.
The sales receipt is considered proof regarding the warranty. Within this warranty period, we will at our discretion, either
by means of repair or replacement, correct free of charge all defects due to material or manufacturing defects of the
pump.
The warranty excludes all damage attributable to improper use or wear and tear. We do not assume any liability for con-
sequential damages which occur due to a failure of the device.
In case of guarantee, please get in touch with your specialist dealer.
9 . TECHNICAL CHANGES
We reserve the right to make technical changes in terms of progress.
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