5.2 Installation positions
Arrows on the pump housing show the direction of
liquid flow through the pump.
The pumps can be installed with the motor and pump
shaft in all positions between vertical and horizontal,
but the motor must never fall below the horizontal
plane.
Horizontal motors with feet must always be
supported.
A
B
TM034126
Installation positions
A:
0.25 - 37 kW
B:
0.25 - 200 kW
Fit isolating valves on either side of the pump as this
makes it unnecessary to drain the system if the pump
needs to be cleaned or repaired.
5.3 Foundation of NB, NBG, MTB pump
without base frame
Non-compliance may result in functional
faults which will damage the pump
components.
Observe the following requirements when preparing
the foundation:
•
We recommend that you install the pump on a
plane and rigid concrete foundation which is
heavy enough to provide permanent support for
the entire pump.
•
The foundation must be capable of absorbing any
vibration, normal strain or shock.
•
Optimally, the weight of the concrete foundation
should be at least 1.5 times the weight of the
pump.
•
The concrete foundation must have an absolutely
level and even surface.
•
The foundation length and width must always be
200 mm larger than the length and width of the
pump. See the figure below.
Lf
B
f
Lf
h
f
TM034130
Foundation
•
The minimum height of the foundation, indicated
by h
f
, can then be calculated by the following
formula:
hf
=
m
pump × 1.5
Lf
×
Bf
×
δ
concrete
h
f
Height of the foundation [m]
L
f
Length of the foundation [m]
B
f
Width of the foundation [m]
m
pump
Mass of the pump [kg]
δ
concrete
Density of the concrete [kg/m
3
]
The density, δ, of concrete is usually taken
as 2,200 kg/m
3
.
•
In installations where noise-less operation is
particularly important, we recommend a
foundation with a mass up to 5 times that of the
pump. See also Vibration damping.
After installation is finished, tighten the
screws connecting the flange, feet and the
anchor bolts according to the tightening
torques. You must apply an anti-loose
method, such as mounting lock washers.
21
English (GB)
Summary of Contents for NB 80-200/222VAXEF1BESBQQEWX2
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