6.1.1 Condition of the well
If the pump is to be installed in a new well, the
well should be fully developed and bailed or
blown free of cuttings and sand. The stainless
steel construction of the Grundfos submersible
pump makes it resistant to abrasion; however,
no pump, made of any material, can forever
withstand the destructive wear that occurs when
constantly pumping sandy water.
If this pump is used to replace an oil-filled
submersible or oil-lubricated line-shaft turbine
pump in an existing well, the well must be
blown or bailed clear of oil.
Determine the maximum depth of the well, and
the draw-down level at the pump's maximum
capacity. Pump selection and installation depth
should be based on this data.
The inside diameter of the well casing should be
checked to ensure that it is not smaller than the
size of the pump and motor.
6.2 Positional requirements
Warning
If the pump is to be installed in a
position where it is accessible, the
coupling must be suitably isolated
from human touch. The pump can
for instance be built into a flow
sleeve.
Depending on motor type, the pump can be
installed either vertically or horizontally.
A complete list of motor types suitable for
horizontal installation is shown in
section
6.2.1 Motors suitable for horizontal
installation.
If the pump is installed horizontally, the
discharge port should never fall below the
horizontal plane. See fig. 2.
Fig. 2
Positional requirements
If the pump is installed horizontally, e.g. in a
tank, we recommend you to fit it in a flow sleeve.
6
Allowed
Not
allowed
6.2.1 Motors suitable for horizontal
installation
Output power
60 Hz
Motor
[hp (kW)]
MS
All
5 - 40
MMS 6000
(3.7 - 30)
30 - 125
MMS 8000
(22 - 92)
100 - 225
MMS 10000
(75 - 170)
During operation, the suction
interconnector of the pump must
Caution
always be completely submerged in
the liquid.
Warning
If the pump is used for pumping hot
liquids 104-140 °F (40-60 °C), make
sure that persons cannot come into
contact with the pump and the
installation, e.g. by installing a
guard.
6.2.2 Pumped liquids
Submersible pumps are designed for pumping
the following liquids:
•
clear and cold water that is free of air and
gasses
•
clean, thin non-explosive liquids without
solid particles or fibers.
Decreased pump performance and life
expectancy can occur if the water is not cold and
clear or contains air and gasses.
Maximum water temperature should not exceed
102 °F (38 °C). Special consideration must be
given to the pump and motor if it is to be used to
pump water above 102 °F (38 °C).
The Grundfos stainless steel submersible pump
is highly resistant to the normal corrosive
environment found in some water wells. If water
well tests show that the water has an excessive
or unusual corrosive quality, or exceeds 102 °F
(38 °C), contact your Grundfos representative
for information concerning specially designed
pumps for these applications.
Output power
50 Hz
[hp (kW)]
All
5 - 40
(3.7 - 30)
30 - 125
(22 - 92)
100 - 225
(75 - 170)