Installation; Positional Requirements - Grundfos SPO Installation And Operating Instructions Manual

5. Installation

Before starting work on the pump/motor,
make sure that the electricity supply has
been switched off and that it cannot be
accidentally switched on.
The pump must be installed in a frost-free location.
Note: The pump must not be installed hanging from
the supply cable.
The pump is not allowed to run against a closed dis-
charge valve.
Install the pipes so that the pump is not exposed to
mechanical stress.
Pump with base plate:
Install the pipes so that air locks are avoided, espe-
cially on the suction side of the pump, see fig. 1.
It is recommended to fit a non-return valve in the
suction pipe.
Fig. 1

5.1 Positional requirements

The pump is suitable for both vertical and horizontal
installation, however, the pump shaft should never
fall below the horizontal plane, see fig. 2.
Allowed
Fig. 2
• Before the pump is submerged in the well or tank,
make sure that the well/tank does not contain
sand or solid sediment.
• Installation in well:
Install the pump so that the pump inlet is at least
1 metre above the bottom of the well.
• Installation in tank:
Place the pump on the bottom of the tank.
• The pump must not run dry.
Not allowed
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