DAYLIFF D3SP Manuel d'installation et d'utilisation - Page 8
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5. INSTALLATION
i)
Pump Application
A wide range of pump models are available and the pump selected must be
Ÿ
matched to the borehole output to provide optimal operating performance. This
should be done with reference to the borehole drillers report in consultation with
a borehole installation specialist. As a rule pump output should not exceed 65%
of maximum tested borehole yield.
Minimum Borehole Diameter 3"pumps -100mm, 4"pumps-110mm, 6"pumps-
Ÿ
160mm, DS30-200mm.
Maximum Pump Immersion Depth - 200m for DSP , 250m for DS and 35m for
Ÿ
D3SP .
Pumped liquid should be clean, thin and non-explosive containing no solid 3
Ÿ
particles or fibres. Sand content should not exceed 50gm/m or else pump life
will be reduced and any warranties will be invalidated.
Liquid temperature should not exceed 40 C in order to preserve rubber
Ÿ
components. Also for high temperatures one motor size larger should be fitted to
prolong motor life due to high operating
temperatures.
Pumps can be installed either vertically or
Ÿ
horizontally, though if installed horizontally the
discharge outlet should never fall below the
horizontal plane. For all horizontal installations
a flow sleeve should be used and also there
should be a minimum of 0.5m water depth
above the pump to prevent the formation of a
vortex.
0
6
Allowed
Fig. 3 Pump Axis Limits
Not
Allowed