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Bomba NIAGARA:Bomba NIAGARA.qxd 27/01/2010 18:01 Página 14
c) 30 m.A. differential high sensitivity
switch.
d) Others for monitoring and control.
The electrical characteristics of the
protection devices and their regulation
will comply with those for the motors to
be prortected and with the service
conditions envisaged for these, and the
instructions given by the manufacturer
must be followed (see nameplate).
- In the case of equipment with triphase
motors, the motor winding interconnection
bridges must be suitably positioned
(see figs. 3 - 4, page 39).
- Conductor inlets and outlets at the
bushing box will have stuffings to
ensure the absence of damp and dirt,
and will therefore have a sealed casing.
-
Conductors
terminals
for
bushings.
6. STARTING
6.0. Before connecting the equipment
to the mains, the following operations
will be carried out:
- Check that the electrical conditions
are correct.
- Manually check that the motor pump is
not jammed.
6.1. PUMP PRIMING.
ATTENTION
With the pump below the swimming
will
have
suitable
connection
to
the
14
pool water level, fill the pump by slowly
opening the aspirations cut-off valve,
with the header valve in the open
position.
6.2. DIRECTION OF ROTATION.
ATTENTION
Ensure that the motor shaft turns freely;
do not start the pump if it is blocked. For
this purpose, electropumps have a
groove at the end of the shaft, on the
ventilator side, which permits it to be
turned manually using a screwdriver
(fig. 1, page 38).
In triphase motors, the impeller (6) can
be unscrewed if the motors starts in the
opposite direction. Counter-rotation can
even damage the mechanical seal.
Start the motor for a few seconds and
check that the direction of rotation
coincides with that indicated by the
arrow on the ventilator cover. Should
this not be the case, it is absolutely
necessary to advise the authorised
installer (invert the phase connection).
6.3.
ATTENTION
Check that the motor does not exceed
the
amperage
indicated
nameplate rating (36) (fig. 5, page 42);
otherwise, regulate using the header
valve.
on
the
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