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4.2 Electrical requirements
• The local regulations in force overrule these specified require-
ments.
• In the case of fire fighting systems (hydrants and/or sprinklers),
check the local regulations in force.
Electrical connection checklist
Check that the following requirements are met:
• The electrical leads are protected from high temperature, vibra-
tions, and collisions.
• The power supply line is provided with:
• A short-circuit protection device
• A mains isolator switch with a contact gap of at least 3 mm
The electrical control panel checklist
NOTICE:
The control panel must match the ratings of the electric pump. Improp-
er combinations could fail to guarantee the protection of the motor.
Check that the following requirements are met:
• The control panel must protect the motor against overload and
short-circuit.
• Install the correct overload protection (thermal relay or motor pro-
tector).
Pump Type
Single phase standard electric
pump ≤ 1,5 kW
Three phase electric pump and
other single phase pumps
• The control panel must be equipped with a dry-running protection
system to which a pressure switch, float switch, probes, or other
suitable device is connected.
• The following devices are recommended for use on the suction
side of the pump:
• When the liquid is pumped from a water system, use a pres-
sure switch.
• When the liquid is pumped from a storage tank or reservoir,
use a float switch or probes.
• When thermal relays are used, relays that are sensitive to phase
failure are recommended.
The motor checklist
WARNING:
• Read the operating instructions in order to ensure
whether a protection device is provided if another motor
other than the standard is used.
• If the motor is equipped with automatic thermal protec-
tors, be aware of the risk of unexpected starts in con-
nection to overload. Do not use such motors for fire-
fighting applications and sprinkler systems.
NOTICE:
• Only use dynamically balanced motors with a half-sized key in the
shaft extension (IEC 60034-14) and with normal vibration rate (N).
• The mains voltage and frequency must agree with the specifica-
tions on the data plate.
• Only use single-phase or three-phase motors whose size and
power comply with the European standards.
In general, motors can operate under the following mains voltage toler-
ances:
3
fuses aM (motor starting), or magneto-thermal switch with curve C and Icn ≥ 4,5 kA or other equivalent device.
4
Overload thermal relay with operation class 10A + fuses aM (motor starting) or motor protection magneto-thermal switch with operation class 10A.
16
Protection
• Built-in automatic reset
thermal-amperometric pro-
tection (motor protector)
• Short circuit protection
(must be supplied by the
3
installer)
• Thermal protection (must
4
be supplied by the instal-
ler)
• Short circuit protection
(must be supplied by the
installer)
Frequency Hz
50
60
Use cable according to rules with 3 leads (2+earth/ground) for single
phase versions and with 4 leads (3+earth/ground) for three phase ver-
sion.
4.3 Install the pump
4.3.1 Mechanical installation
Check the following before installation:
• Use a concrete of compressive strength class C12/15 which
meets the requirements of exposure class XC1 to EN 206-1.
• The mounting surface must have set and must be completely hor-
izontal and even.
• Observe the weights indicated.
Install the pump set
For information about the installation type,
of horizontal installations, see
For examples of vertical installations,
Check that the foundation has been prepared in accordance with the
dimensions given in the outline drawing/general arrangement drawing.
Type
Motor Size
A
Up to 132
B
From 160 to 200
From 160 to 280
C
250
D
Up to 132
E
From 160 to 280 2– and 4–pole
1.
Position the pump set on the foundation and level it with the help
of a spirit level that is placed on the discharge nozzle.
The permissible deviation is 0.2 mm/m.
2.
Remove the plugs covering the ports.
3.
Align the pump and piping flanges on both sides of the pump.
Check the alignment of the bolts.
4.
Fasten the piping with bolts to the pump. Do not force the piping
into place.
5.
Use shims for height compensation, if necessary.
6.
Tighten the foundation bolts (3) evenly and firmly.
e-nscs Installation, Operation, and Maintenance Manual
Phase ~
UN [V] ± %
1
220 – 240 ± 6
3
230/400 ± 10
400/690 ± 10
1
220 – 230 ± 6
3
220/380 ± 5
380/660 ± 10
seeTable 10
. For examples
Figure 16
,
Figure 17
, and
Figure 18
seeFigure 19
and
Figure 20
Number of
Type of Fasten-
Poles
ing
2– and 4–pole
Mount on
ground using
the volute cas-
ing feet.
2–pole
Mount on
ground using
4–pole
the pump and
motor feet.
Shims are re-
quired under the
pump and motor
feet.
2–pole
Mount on
ground using
the pump and
motor feet.
Shims are re-
quired under the
pump and motor
feet.
2– and 4–pole
Mount on
ground using
the volute cas-
ing feet.
Mount on
ground using
the motor feet
.
.
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