35 36
m
pump
× 1,5
h
f
=
L
f
× B
f
× δ
determinated
Figure 9:
Bolt in foundation stand
4.5. Foundation
For pumps with a ≥ 50HP (37 kW) motor, the length and width of the base plate should always
be 60in x 60in (1,5 x 1,5 (Lf x Bf) meters).
The weight of the foundation stand must be at least 1.5 times the total weight of the pump. To
calculate the minimum foundation stand height (hf):
Concrete density (δ) is generally estimated at 137.32 LB/FT³ (2200 kg/m³)
Facilities where silent operation is of great concern, we recommend a foundation stand up to
5 times the weight of the pump.
As shown in Figure 9 the stand must be fitted with bolts to secure the pump. Once the bolts
have been installed, you may proceed to place the pump on the stand. If necessary, the pump
base plate can be aligned by means of wedges to level the stand.
When dampers are to be used, they should be installed under the foundation stand. For pumps
fitted with ≤ 40HP (30 kW) motors, vibration dampers can be installed as in Figure 10.
For pumps fitted with ≥ 50HP (37 kW) motors, install a damping plate to reduce vibration and
noise as in Figure 11.
4.6. Vibration Damping
Installation, Operation and Maintenance Manual Installation, Operation and Maintenance Manual
Figure 10:
Pump on vibration dampers
Figure 11:
Pump on a vibration damping plate
Vibration
dampers
Antivibration
plate
4.7. Outdoor Installation
ATTENTION:
When the pump is to be installed outdoor, we recommend that the motor
is fitted under a rain cover.
4.6. Vibration Damping
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