4
380/415V , these are the permitted
limit values).
- Protection index: IP 68
- Max. immersion depth: 3 to 5 m.
- Minimum emptying level:
NJ/NA - 25mm
NB - 40mm
NC/ND/NR – 55mm
F 40 - 90mm
F 50 - 100mm
F 65 - 120mm
Maximum diameter of solid particles
sucked up:
NJ/NA - 25mm
NB - 40mm
NC/ND/NR - 55mm
F 40 - 38mm
F 50 - 50mm
F 65 - 63mm
For intermittent duty the water
temperature may reach + 60ºC.
5. INSTALLATION
- Installation can be a fairly complex
operation.
- It must therefore be carried out by
competent and authorized installers.
CAUTION: during installation apply all
safety regulations issued by the
competent authorities and use
common sense al all times.
- Do not underestimate the risk of
drowning if the installation has to be
performed in a well at a certain depth.
- Make sure there are no toxic
discharges or harmful gases present in
the atmosphere. If the installation
involves welding, take all necessary
precautions to avoid explosions.
- Always remember the danger of
infection and take all hygiene-health
precautions.
- If the bottom of the well or the surface
on which the pump rests is uneven and
there is the possibility of stones, debris,
- To avoid the backow of liquid from
the discharge manifold, install a check
valve after the pump delivery outlet
(Fig. 1).
- If the pump is installed in a well, the
well must measure at least:
Fig.1
NJ/NA - 350x350x350
NB - 450x450x450
NC/ND/NR - 500x500x500
F 40 - 400x400x400
F 50 - 500x500x500
F 65 - 600x600x600
- The starting and stopping level of the
pump can be varied by increasing the
free length of the oat.
- For the motor to be cooled correctly
the water level should not drop below :
NJ/NA - 230mm
NB - 250mm
NC/ND/NR - 270mm
F 40 - 250mm
F 50 - 300mm
F 65 - 400mm
mud, etc., accumulating there, lay a
level raised supporting base (Fig.1).
- The delivery piping may be either rigid
or exible as long as the cross-section
for passage of the uid is no smaller
than that of the pump delivery outlet.
CHECK
VALVE
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