Location; Mechanical Installation - Grundfos JPC Series Installation And Operating Instructions Manual

2.2 Location

The pump must be installed in a well-ventilated
location, protected from unfavourable weather
conditions. The ambient temperature must not
exceed 40/55 °C. See fig. 2.
Fig. 2 Weather conditions
We recommend that you place the pump as close as
possible to the liquid to be pumped.
2.2.1 Frost protection
If the pump is not used during periods of frosts, it
must be drained to avoid damage.
To drain the pump, remove the draining plug. See fig.
3.
Fig. 3 Draining the pump

2.3 Mechanical installation

2.3.1 Positioning the product
The pump must be installed in horizontal
position.
Caution
Install the pump so that it is not stressed
by the pipework.
We recommend that you fasten the pump to the
foundation, thus ensuring that vibrations caused by
pump operation are absorbed. See fig. 4.
Fig. 4 Fastening the pump and pipes
2.3.2 Pipe connection
The internal diameters of the pipes must
Caution never be smaller than that of the openings
of the pump.
If the inlet pipe is longer than 10 metres or the
suction lift is greater than 4 metres, the diameter of
the pipe must be larger than 1". If a hose is used as
inlet pipe, it must be non-collapsible.
To prevent solids from entering the pump, you can fit
a filter to the inlet pipe. We recommend that you fit a
foot valve on the inlet side.
For suction lifts of over four metres or for long
horizontal stretches, we recommend that you use an
inlet pipe with a diameter larger than that of the inlet
opening of the pump.
To prevent the formation of air pockets, the
Caution inlet pipe must slope slightly upwards
towards the pump. See fig. 5.
Fig. 5 Inlet pipe sloping upwards
5