Filling The Shaft - Zehnder Pumpen FPS-K Basis Bedienungsanleitung

Pressure line
The pressure pipe line ends approx. 180 mm outside the shaft with a pipe socket
PE HD 63x5.8. PE HD pipe 63x5.8 should be installed as pressure line. Connection to the pipe socket
which is available at the shaft can take place by means of a commercial compression fitting, for example.
Ventilation / cable routing
2 sleeves with lip seal DN 100 are available for ventilation / cable entry. The ventilation pipe (KG pipe DN
100) is inserted into the sleeve (see inlet). To avoid bad odour, we recommend to guide the venting line
over the roof. The cable empty pipe (KG pipe DN 100) is inserted into the other sleeve and guided further
up to the switchgear. The pipe has to be closed at the outlet in the control cabinet or building (e.g. by a
blind cover with cable glands). If a pipe connection is required, so it has to be closed using a commercial
blind cover.
Electrical connection
The pump cable and the pneumatic hose are guided in the cable empty pipe toward the switchgear.
The operating instructions of the pump and the circuit diagram apply for the electrical connection.
ATTENTION The shut-down point and the run-on time have to be adjusted in such a way that the
pumping process is completed prior to the pump housing emerging, but the pitot tube has already
completely emerged. The pneumatic hose has to be guided rising steadily and without loops to the
switchgear. The maximum length should not exceed 20 m
5.4 Filling the excavation pit
Prior to filling the excavation pit, the lip seal for the top piece has to be inserted into the shaft and the top
piece be inserted and adjusted using the BEGU shaft cover of the ground elevation
ATTENTION In case the top piece has to be pushed into the shaft more than 130 mm, it has to be
shortened in advance so that the top piece does not cover the cable empty pipe and the
ventilation and does not damage the pump cable nor the pneumatic control line during the
process.
ATTENTION Please note that the pressure test of the pressure line according to ATV A116 or
DIN 4279 Part 1-9 must not be carried out against the closed slide in the pump shaft.
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 regulations.
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.
Use non-cohesive filling material!
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