Installation; Pipe Connection; Pump Location - Grundfos Unilift AP35B Instrucciones De Instalación Y Funcionamiento

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5. Installation

Warning
The installation of the pump must be
carried out by specially trained
persons.
Care must be taken to ensure that
persons cannot come into contact with
the pump impeller.
According to EN 60335-2-41/A2:2010,
this product with 5 metres of mains
Note
cable may be used only for indoor
applications.

5.1 Pipe connection

For permanent installation, we recommend that you
fit a union, a non-return valve and an isolating valve
in the outlet pipe.
If the pump is installed in a pit with a minimum free
cable length of 100 mm, see fig. 5, the minimum pit
dimensions must be as shown in fig. 2.
Furthermore, the pit must be dimensioned according
to the relation between the water flow to the pit and
the pump performance.
550 mm
Fig. 2
Minimum pit dimensions in pit if
minimum free cable length is 100 mm

5.2 Pump location

The pump can be used in vertical or horizontal
position. See fig. 3.
During continuous operation, the motor and the
pump inlet must always be completely covered by
the pumped liquid.
Fig. 3
Position of pump
When the pipe/hose has been connected, place the
pump in its operating position.
Note: Never lift the pump by the power supply cable.
Position the pump so that the pump inlet will not be
blocked or partly blocked by sludge, mud or similar
materials.
We recommend that you place the pump on a solid
base. See fig. 4.
Fig. 4
Place pump on a solid base
In the case of permanent installation, the pit must be
cleared of sludge, pebbles, etc. before the pump is
installed.
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Unilift ap50b

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