Electrical Connection - E-Tech ED 5 Instructions Pour L'utilisation

3.2. Transportable installation
3.93.037/5
To avoid early deterioration of the pump when used in
stagnant water or in rivers, mount on a flat surface rai-
sed from the ground so that sand or grit is not lifted.
When a plastic delivery pipe or flexible hose is
used, a rope is required for lowering, securing and
lifting the pump.
A safety rope or chain of non-perishable material
should always be used to secure the pump.
Never use the electric power cable
to suspend the pump.
In order to avoid the risk of mechanical or
electrical injury all portable pumps should
be securely isolated from electrical power
supply prior to their relocation.
Attach the power supply cable to the delivery pipe
or to the safety rope with cable clamps. The power
cable should not be taut: allow for a certain degree
of slackness to avoid the risk of strain caused by
expansion of the pipe during operation.

4. Electrical connection

Electrical connection must be carried out
only by a qualified electrician in accordance
with local regulations.
Follow all safety standards.
The unit must be always earthed, also with a
non-metallic delivery pipe.
Make sure the frequency and mains voltage corre-
spond with the name plate data.
For use in swimming pools (not when persons are
in the pool), garden ponds and similar places, a re-
sidual current device with I∆N not exceeding 30 mA
must be installed in the supply circuit.
Install a device for disconnection from the
mains (switch) with a contact separation of at least
3 mm on all poles.
When extension cables are used, make sure the
cable wires are of adequate size to avoid voltage
drops and that the connection stays dry.
4.1. Single-phase pumps ED, EDV
Supplied with incorporated capacitor and thermal
protector, with power cable type H07 RN8-F,
with plug and float switch.
Connect the plug to a socket with an earth lead.
Electrical diagram pag. 42.
4.2. Three-phase pumps EDT, EDVT
Cable without plug.
Install in the control box an overload-protective de-
vice in accordance with the name-plate current.
With three-phase pumps, when the water level is
not under direct visible control, install a float switch
connected to the control box and to set the water
levels to stop and automatically start the pump.
5. Starting
With a three-phase power supply make sure the
direction of rotation is correct.
Before installation, momentarily start the motor to
check through the suction opening that the rotation
of the impeller is as shown by the arrow on the
pump. Otherwise disconnect electrical power and
reverse the connections of two phases in the con-
trol box.
Operation with wrong direction of rotation will cause
vibration and loss of delivery capacity.
Reverse rotation can also demage the mechanical
seal.
When in doubt, take the pump out of the water and
check rotation of the impeller by sight.
Never introduce fingers in the suction
opening unless it is absolutely certain
the electric power has been disconnected
(that the pump cannot be accidentally
switched on) and the impeller has stopped rotating
completely.
The motors with supply current directly swit-
ched by thermally sensitive switches can start
automatically.
Never take the pump out of the water while the
pump is still operating.
Avoid running dry.
Construction with float switch: the float switch
connected directly to the pump controls starting and
stopping.
Check that the float switch is free from any obsta-
cle.
Construction without float switch: start the pump
only if fully immersed in the liquid to be raised.
The Single-phase motor will stop if operation is
prolonged with water at a temperature above 35
°C.
When the windings cool down, the thermal protec-
tor enables restarting.
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