Electrical Connection - Calpeda NCE H Serie Instrucciones De Uso

It's Absolutely forbidden to install the machine in an
environment with potentially explosive atmosphere.
6.3 Unpacking
Inspect the device in order to check any damages
i
which may have occurred during transportation.
Pump is protected with a double box during transport. It
can be lifted from the box with internal handles or by lif-
ting it by the heat sink.
Package material, once
discarded/recycled according to local laws of the destina-
tion country.
6.4. Installation
Ensure the inside of pipes are clean before connection.
Mount pump in an easily accessible, position for easier
inspection, dismantling the pump.
To avoid draining and refilling of the whole pipe system
when dismantling the pump, it is recommended to provide
gate valves on the suction and delivery sides.
The pump must be installed with the shaft axis horizontal
(fig. 1).
Fig. 1
ATTENTION: The pipes connected to the pump
should be secured to rest clamps so that they do not
transmit stress, strain or vibrations to the pump.
The arrow on the pump casing indicates the direction of
water flow (fig. 2).
Fig. 2
The nominal diameter of the pipes must not be less than
the nominal diameter of the pump. To ensure smooth
operation with minimal vibrations and noises is recom-
mended to install the pump in a straight section of pipe at
a distance of at least 5-10 D (D is the nominal diameter
of the pump tube) from any curves.
In order to obtain a correct terminal box position, the
motor housing must be turned once the screws have
been loosened. Change the terminal box positions as
NCE(D) H, NCE(D) HQ Rev. 4 - Operating Instructions
removed, must be
Fig. 6
shown (fig. 3).
Fig. 3
6.4.1. Insulation of the pump in cooling and air condi-
tioning systems.
When installed in cooling and air conditioning systems,
the body of the pump must be insulated.
WARNING! The body of the pump must be
insulated up to the slot between the motor and the
body of the pump.
The openings for the elimination of condensation must be
clear and must permit discharge from the stator housing.
These openings must remain clear in heating systems
where only the body of the pump must be insulated
(figures 4).
Fig. 4

6.5 Electrical connection

Electrical connection must be carried out only by a
qualified electrician in accordance with local regulations.
Follow all safety standards.
To connect the main electric line it is not necessary to
open the terminal motor cover.
Fig. 6
Compare the frequency and mains voltage with the
name-plate data and connect the supply cables to the
terminals in accordance with the appropriate diagram
(fig. 5).
Fig. 5
Fig. 3
GB
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