General Data; Electrical Connections - EBARA BHE6'' Manual De Empleo E Instalación

If the pump is not used in vertical position, both the pump
side and the motor side must be supported. Note that the
centre of gravity will vary according to the pump type.

2. GENERAL DATA

2.1 General description
The submersible pumps are multistage pumps working
with counterclockwise rotation direction (observing from
the delivery side) directly coupled to special submersible
motors (according to NEMA standards).
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6 BHE L 32 7
2.2 Applications
These submersible pumps are designed for a wide range
of applications, such as the supply of water to private
homes, water systems and industries.
These pumps are necessary in case of lowering of the
groundwater level, as well as for pressure increase.
Submerge the pump completely under the water level
both if it is installed horizontally and vertically. See
paragraph 3.1 Positioning Limits.
2.3 Pumped liquids
Pumped liquids must be clean, compatible with pump
components and materials, without solid particles or
The maximum sand content in the water must not exceed
50 g/m³. A greater sand content in the water reduces the
service life of the pump and increases the risk of blocking.
When pumping liquids with a density higher than that of
water, motors with correspondingly higher outputs must
be used.
3. INSTALLATION / PREPARATION
3.1 Positioning limits
m
If the pump has to be installed in a position
where it is accessible to people, any possibility
of contact with the coupling must be avoided.
The pump might for instance be equipped with a
protective shield.
Fig. 1
Number of stages
Rated flow rate m³/h
Version completely in AISI 316
Type of pump
Minimum size of the well
The pump is suitable for both vertical and horizontal
installation, however, the pump should never be installed
inclined downwards, see Fig. 2.
During operation, the suction support must always
be completely submerged.
In special conditions, it may be necessary to submerge
the pump even deeper, depending on the operation
conditions of the pump, as well as on temperature and
NPSH values.
3.2 Diameter of Pump/Motor
Check in the technical catalog the maximum diameter of
the pump and the pump with motor.
Verify the borehole with an inside calliper to ensure
unobstructed passage.
3.3 Check valve on the delivering piping
The pump is equipped with an embedded check valve
in the delivery opening. However, it is recommended,
especially if the pump directly feeds a distribution network
subject to pressure, to install another check valve on
the delivery piping at no more than 10 meters from the
minimum well level. (If this latter is not known, use the
delivery opening as minimum level).
Its presence reduces hydraulic shocks due to starts and
stops.

4. ELECTRICAL CONNECTIONS

m
Before starting to work on the pump, make sure
that the power supply has been disabled and
that it cannot be accidentally switched on.
4.1 General remarks
The electrical connections should be carried out by an
authorised electrician according to the regulations in
Fig. 2
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