New Systems; Protections; Moving Parts; Noise Level - DAB NKV Série Instructions Pour L'installation Et La Maintenance

6.3 New systems

Before running new systems the valves, pipes, tanks
and couplings must be cleaned accurately.
To avoid welding waste or other impurities getting into
the pump, the use of TRUNCATED CONICAL filters
made of corrosion resistant materials (DIN 4181) is
recommended.
Fig. 3
5 1 2 4
3

7. PROTECTIONS

7.1 Moving parts

Before starting the pump all the moving parts have to
be properly protected with dedicated components
( fan, cover, etc. ).
During pump operation, keep well
away from the moving parts ( shaft,
fan, etc. ).
If getting closed to the running pump is necessary, be
properly dressed as from laws rules, in order to avoid
injuries.

7.2 Noise level

See table A, pag. 138.
In cases where the LpA noise levels exceed 85 dB(A),
suitable HEARING PROTECTION must be used in
the place of installation, as required by the regulations
in force.

7.3 Hot and cold parts

DANGER OF BURNING !!
As well as being at high temperature
and high pressure, the fluid in the
system may also be in the form of
steam!
It may be dangerous even to touch the pump or
parts of the system.
If the hot or cold parts are a source of danger, they
must be accurately protected to avoid contact with
them.

8. INSTALLATION

The pumps
quantities of residual water from
testing. We advise flushing them
briefly with clean water before their
final installation.
1
-Filter body
2-Narrow mesh filter
3-Differential pressure
gauge
4-Perforated sheet
5-Pump intake aperture
may contain small
ENGLISH

8.1 Pump installation


The electropump must be fitted in a well ventilated
place and with an environment temperature not
exceeding 50°C.

Electropumps with degree of protection IP55 may
be installed in dusty and damp environments,
without any specific protection.

It is always good practice to place the pump as
close as possible to the liquid to be pumped.

The installation
customer, if they are metallic they have to be
painted rust and corrosion. They have to be flat and
stiff enough to resist to short circuit forces and avoid
resonnance due to vibrations.

Concrete basements have to be well solid and dry
before installing the pumps.

A firm anchoring of the feet of the pump assembly
on the base helps absorb any vibrations created by
pump operation.

The pump may be installed in either horizontal or
vertical position, as long as the motor is always
above the pump.

Ensure that the metal pipes do not transmit excess
force to the pump apertures, so as to avoid causing
deformations or breakages.

Use pipes with a suitable thread to avoid damage to
the inserts.

The internal diameter of the pipes must never be
smaller than that of the apertures of the pump

If the head at intake is negative, it is indispensable
to fit a foot valve with suitable characteristics at
intake.

For suction depths of over four metres or with long
horizontal stretches it is advisable to use an intake
pipe with a diameter larger than that of the intake
aperture of the pump.

Any passage from a pipe with a small diameter to
one with a larger diameter must be gradual. The
length of the passage cone must be 5 to 7 times the
difference in diameter.

Check accurately to ensure that the joins in the
intake pipe do not allow air infiltrations.

To prevent the formation of air pockets, the intake
pipe must slope slightly upwards towards the pump.
20
baseplate, provided by the