Foundation; Vibration Dampening; Outdoor Installation - Grundfos CRT Serie Instrucciones De Instalación Y Funcionamiento

6.1 Foundation

The foundation/installation must be carried out in
accordance with the following instructions.
Note
Non-compliance may result in functional faults
which will damage the pump components.
Grundfos recommends to 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. See fig. 5.
Fig. 5 Correct installation
Fig. 6 Foundation
The recommended length and width are shown in fig. 6. Note that
the length and width of the foundation must be 200 mm larger
than the base plate.
The weight of the foundation must be at least 1.5 times the total
weight of the pump. The minimum height of the foundation (h
can then be calculated:
h =
f
L
f
The density (δ) of concrete is usually taken as 2,200 kg/m
In installations where noise-less operation is particularly
important, a foundation with a weight up to 5 times that of the
weight is recommended.
10
f
m x 1.5
pump
x B δ
f concrete
3
.
The foundation must be provided with bolts for fixing the base
plate. See fig. 7.
Fig. 7 Bolt in foundation
When the foundation bolts are in position, the pump can be
placed on the foundation. The base plate can now be aligned
using shims, if necessary, so that it is completely horizontal.
See fig. 8.
Fig. 8 Alignment with shims

6.2 Vibration dampening

If vibration dampers are used, they must be installed under the
foundation.
Vibration dampers
Fig. 9 Pump on vibration dampers

6.3 Outdoor installation

When installed outdoors, it is recommended to provide the motor
with a rain cover. We also recommend to open one of the drain
holes in the motor flange.
)
Shims