Dutypoint VT Booster Set, O & M Manual

Page: 36 / 123

English (GB)
G
7
6.1 Foundation
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.
6 .
Fig. 6
Correct installation
Fig. 7
Foundation
The recommended length and width are shown in fig. 7 . Note that
the length and width of the foundation for pumps with motor size
≤ 30 kW must be 200 mm larger than the base plate.
For pumps with motor size ≥ 37 kW, the length and width must
always be 1.5 x 1.5 (L
f
x W
f
) metres.
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
f
) can
then be calculated:
The density (
δ
) of concrete is usually taken as 2,200 kg/m
3
.
In installations where noise-less operation is particularly
important, a foundation with a mass up to 5 times that of the
pump is recommended.
The foundation must be provided with bolts for fixing the base
plate. See fig.
8 .
Fig. 8
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.
9 .
Fig. 9
Alignment with shims
6.2 Vibration dampening
If vibration dampers are used, they must be installed under the
foundation. Pumps with motor size
≤ 30 kW can use vibration
dampers as shown in fig. 10 .
For pumps with motor sizes ≥ 37 kW, use a Sylomer
®
plate as
shown in fig. 11 .
Fig. 10
Pump on vibration dampers
Fig. 11
Pump on Sylomer
®
plate
Note
The foundation/installation must be carried out in
accordance with the following instructions.
Non-compliance may result in functional faults
which will damage the pump components.
TM
04
0
342
06
08
TM
04
03
43
06
08
h
f
=
m
pump
×
1.5
L
f
×
B
f
× δ
concrete
TM
03 45
89 220
6
T
M
04
03
62
06
0
8
T
M
04
16
91
10
08
TM
04 16
92 100
8
Shims
Vibration dampers
Sylomer
®
plate