Foundation - Grundfos CR Serie Instrucciones De Instalación Y Funcionamiento

6.1 Foundation

Warning
To avoid personal injury, make sure that the pump is
mounted securely in all conditions.
Warning
Carry out the foundation or installation in accordance
with the following instructions.
Grundfos recommends that you install the pump on a concrete
foundation which is heavy enough to provide permanent and rigid
support to the entire pump. The foundation must be capable of
absorbing any vibration, normal strain or shock. The concrete
foundation must have an absolutely level and even surface.
Place the pump on the foundation, and fasten it. The base plate
must be supported on the whole area.
The following instruction applies when mounting the pump in
vertical or horizontal position.
Place the pump on the foundation, and fasten it. See fig. 6.
Fig. 6 Correct installation
Fig. 7 Foundation, vertical mounting
The recommended length and width are shown in fig. 7. Note that
the length and width of the foundation for pumps with motor size
below or equal to 30 kW must be 200 mm larger than the base
plate.
For pumps with motor size above or equal to 37 kW, the length
and width must always be 1.5 x 1.5 (L x B ) metres.
f f
Fig. 8 Foundation, horizontal mounting
The foundation length and width must always be 200 mm larger
than the length and width of the pump. See fig. 8.
The mass of the foundation must be at least 1.5 times the total
mass of the pump. The minimum height of the foundation (h
then be calculated:
× 1.5
m
pump
h =
f
× B × δ
L
f f concrete
The density (δ) of concrete is usually taken as 2200 kg/m
In installations where noise-less operation is particularly
important, we recommend that you use a foundation with a mass
up to 5 times that of the pump.
The foundation must be provided with bolts for fixing the base
plate. See fig. 9.
Fig. 9 Bolt in foundation
When the foundation bolts are in position, place the pump on the
foundation. Then align the base plate using shims, if necessary,
so that it is completely horizontal. See fig. 10.
Fig. 10 Alignment with shims
) can
f
3
.
Shims
9