Foundation - Grundfos Fire HSEF FM Europe Series Installation And Operating Instructions Manual

6.2 Foundation

The instructions in this section are
Note recommendations. The plant and machinery installer
is responsible for making a correct foundation.
We recommend that you install the pump set on a concrete
foundation which is heavy enough to provide permanent and rigid
support for the entire pump.
Fig. 7 Installation example
The foundation must be capable of absorbing any vibration,
normal strain or shock.
As a rule of thumb, the weight of the concrete foundation should
be 1.5 times the weight of the pump set. The concrete foundation
must have an absolutely level and even surface. In the
foundation, install appropriate anchorage dowels to fasten the
pump set.
Figure 8 shows how to construct the foundation of the pump set.
When setting up the foundation, make sure that the foundation is
100 mm (dimension x) larger in length and width than the
dimensions of the base frame.
L f
x
Fig. 8 Foundation dimensions
The minimum height of the foundation (h
follows, if the mass of the foundation is assumed to be 1.5 times
the total mass of the pump set:
m
system
h =
f
L x B x ρ
f f
The density (ρ) of the foundation is usually taken as 2200 kg/m
In installations where noiseless operation is particularly
important, we recommend that you use a foundation with a mass
of up to five times that of the pump set. The minimum height of
the foundation (h ) can then be calculated:
f
m
system
h =
f
L x B x ρ
f f
As ordinary concrete does not set shrink-freely, the resulting gap
must be grouted with a suitable, shrink-free hardening and high-
strength or reinforced undercast (i.e. Pagel V1 or Eurogrout
Premium) to have a force-fit connection between the base frame
and the foundation. Before grouting the undercast, align the
pump set by means of the adjusting screws used for the base
frame. See fig. 9.
Anchor bolt
Base frame
Undercast.
Height as required
or as specified by
the manufacturer
Rough foundation.
Determine the height at site.
Fig. 9 Aligning the pump set
For grouting the undercast, make a shuttering on the raw
foundation. Mix the grouting compound according to the
manufacturer instructions and pour it into the shuttering.
Wait until the specified hardening time has past before fixing the
pump set on the foundation by means of anchor bolts. Anchor
bolts are available as an accessory (P/N 97947677).
Do not use an installation on stud bolts in connection
with additional grouting of concrete. The reason is
that the volume of the concrete shrinks resulting in a
Caution
gap between base frame and concrete. The gap will
persist even if the pump set is fixed by means of stud
bolts later on. This will lead to increased vibrations
during operation.
) can be calculated as
f
x 1.5
concrete
x 5
concrete
Adjusting screw
Foot
Min. 100
3
.
9