Electrical Connections - salmson Nexis-VE 2 Instalación Y Instrucciones De Puesta En Marcha

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7.3 Pipe connection
- Use only the counterflange, bolts, nuts and gas-
kets supplied with the product to connect the
pump to the piping.
CAUTION!
Do not exceed the maximum bolt tightening
torque of 100 Nm.
The use of an impact wrench is prohibited.
- The flow direction of the pump is indicated on
the rating plate of the pump.
- The pump must be installed so that it does
induce any stress into the pipework. The pipes
must be attached so that the pump does not
bear their weight.
- The installation of insulation valves on the suc-
tion and discharge side of the pump is recom-
mended.
- Use expansion joints to mitigate noise and vibra-
tion, if required.
- The nominal cross-section of the suction pipe
should be at least as large as that of the pump
connection.
- The installation of a check valve in the discharge
pipe is recommended to protect the pump
against pressure impulses.
- When directly connected to a public drinking
water system, the suction pipe must be equipped
with a check valve and a guard valve.
- When indirectly connected via a tank, the suc-
tion pipe must be equipped with a strainer to
protect pump and check valve against impurities.
7.4 Motor connection for bare-shaft pump
(without motor)
- Remove the coupling guards.
NOTE: Coupling guards can be removed without
removing the screws completely.
- Attach the motor to the pump using screws (for
FT lantern size – see product designation) or
screws, nuts and handling devices (for FF lantern
size – see product designation) provided with
the pump. Verify motor power and dimensions in
Salmson catalogue.
0.55 0.75 1.1
42
1.5 2.2 3 4
M25
NOTE: Motor power can be adjusted in accor-
dance with the fluid's characteristics. Contact the
Salmson customer service if required.
- Close the coupling guards by tightening all
screws provided with the pump.

7.5 Electrical connections

WARNING! Risk of electrical shock!!!
Ensure that any electrical hazard is avoided.
• Electrical work must only be carried out by
qualified electricians!
• Ensure that the power supply is switched off
and secured against unauthorised switching
before making any electrical connections.
• Safe installation and operation requires the
pump to be properly earthed at the power sup-
ply's grounding terminals.
- Check that operating current, voltage and fre-
quency comply with the specifications on the
motor rating plate.
- The pump must be connected to the power sup-
ply by a solid cable equipped with an earthed
plug-connection or a main power switch.
- Three-phase motors must be connected to an
approved motor starter. The set nominal current
must correspond to the electrical data specified
on the pump motor rating plate.
- The supply cable must be routed in such a way
that it does not contact the pipework and/or
pump and motor casing.
- Pump and/or installation must be earthed in
compliance with local regulations. A residual cur-
rent device (RCD) may be used for extra protec-
tion.
- The power cable (3 phases + earth) must be fed
through the threaded cable connection shown in
black below.
Non-assigned threaded cable connections must
remain sealed with the plugs provided by the
manufacturer.
Power (kW)
5.5 7.5
M25
11 15 18.5
M32/M40
SALMSON 12/2013
22