Install The Pump; Mechanical Installation; Electrical Installation; Commissioning, Startup, Operation, And Shutdown - Lowara e-SV Serie Manual Del Usuario

The electrical control panel checklist
NOTICE:
The control panel must match the ratings of the electric pump. Improper
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-cir-
cuit.
• Install the correct overload protection (thermal relay or motor protector).
Pump Type
Single phase standard electric pump
≤ 1,5 kW
Three phase electric pump and oth-
8
er single phase pumps
• The control panel must be equipped with a dry-running protection sys-
tem to which a pressure switch, float switch, probes, or other suitable de-
vice is connected.
• The following devices are recommended for use on the suction side of
the pump:
• When the water is pumped from a water system, use a pressure switch.
• When the water 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 protectors,
be aware of the risk of unexpected starts in connection to
overload. Do not use such motors for fire-fighting applica-
tions 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 specifications on
the data plate.
• Only use single-phase or three-phase motors whose size and power com-
ply with the European standards.
In general, motors can operate under the following mains voltage tolerances:
Frequency Hz Phase ~
50 1
3
60 1
3
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 version.
Electric pump with motor:
Cable gland
Outer cable diameter range in mm
Type
M20 x 1.5, 6–12
SM X
PLM X
LLM X

4.4 Install the pump

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fuses aM (motor starting), or magneto-thermal switch with curve C and Icn ≥ 4,5 kA or other equivalent device.
8
Overload thermal relay with operation class 10A + fuses aM (motor starting) or motor protection magneto-thermal switch with operation class 10A.
e-SV - English
Protection
• Built-in automatic reset thermal-
amperometric protection (motor
protector)
• Short circuit protection (must be
7
supplied by the installer)
• Thermal protection (must be
supplied by the installer)
• Short circuit protection (must be
supplied by the installer)
UN [V] ± %
220 – 240 ± 6
230/400 ± 10
400/690 ± 10
220 – 230 ± 6
220/380 ± 5
380/660 ± 10
M25 x 1.5, 13–18 M32 x 1.5, 18–25
– –
X X
X X
en - Translation of the original instructions

4.4.1 Mechanical installation

For information about the pump base and anchor holes, see Figure 13.
1. Put the pump onto the concrete foundation or equivalent metal struc-
ture.
If the transmission of vibrations can be disturbing, provide vibration-
damping supports between the pump and the foundation.
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. Anchor the pump securely with bolts to the concrete foundation or
metal structure.

4.4.2 Electrical installation

1. To facilitate the connection, the motor can be rotated to obtain the
most convenient position for the connection:
a) Remove the four bolts that attach the motor to the pump.
b) Rotate the motor to the desired position. Do not remove the cou-
pling between the motor shaft and the pump shaft.
c) Replace the four bolts and tighten them.
2. Remove the screws of the terminal box cover.
3. Connect and fasten the power cables according to the applicable wir-
ing diagram.
For wiring diagrams, see Figure 14. The diagrams are also available on
the back of the terminal box cover.
a) Connect the earth (ground) lead.
Make sure that the earth (ground) lead is longer than the phase
leads.
b) Connect the phase leads.
4. Replace the terminal box cover.
NOTICE:
Tighten the cable glands carefully to ensure protection against cable
slipping and humidity entering the terminal box.
5. If the motor is not equipped with automatic reset thermal protection,
then adjust the overload protection according to the list below.
• If the motor is used with full load, then set the value to the nominal
current value of electric pump (data plate)
• If the motor is used with partial load, then set the value to the oper-
ating current (for example measured with a current pincer).
• If the pump has a star-delta starting system, then adjust the thermal
relay to 58% of the nominal current or operating current (only for
three-phase motors).
5 Commissioning, Startup,
Operation, and Shutdown
Precautions
WARNING:
• Make sure that the drained liquid does not cause damage or
injuries.
• The motor protectors can cause the motor to restart unex-
pectedly. This could result in serious injury.
• Never operate the pump without the coupling guard correctly
installed.
CAUTION:
• The outer surfaces of the pump and motor can exceed 40ºC
(104ºF) during operation. Do not touch with any part of the
body without protective gear.
• Do not put any combustible material near the pump.
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