ENGLISH
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3.2 Construction features
Pump nameplate reports the following informations:
−
Manufacturer
−
Pump type
−
Serial number
−
Capacity (m³/h)
−
Head (meters)
−
Month/ year of construction
−
Break Power (kW)
−
Shaft speed (min-l)
3.3 Applications
Submersed electric pumps are mainly employed in the
following applications:
−
Industrial and civil applications
−
Irrigation systems
−
Water supply systems
−
Mining
−
Offshore
−
Nuclear and steam power stations
−
Fire-fighting equipments
Motors are guaranteed for plant operation up to 20
bar. Maximum allowable water temperature in
standard
constructions
is
25°C.
For
higher
temperatures,
please
consult
our
Technical
Department.
The pumps should be used only for the applications
specified in par. 3.3.
In case of applications not specified on this manual,
please contact DAB PUMPS to check for pump
suitability, installation safety and pump life.
Before working on the pump, make sure the electric
components of the concerned installation are
disconnected from main power supply.
4. MANAGEMENT
4.1 Storage
During storage, please observe the following
precautions:
−
Store the pump in a closed, dry and airy
environment.
−
All motors are filled with a water/ antifreeze
mixture to prevent internal freezing up to -30°C.
−
Motors should not be stored or installed with
lower temperatures or for periods longer than 12
months; however, if this is unavoidable, turn the
shaft by hand once a month.
−
If the motor has been stored for more than 12
months, disassemble it and check rotating parts
and thrust bearing. Just before installation, drain
completely the motor from the water/ antifreeze
mixture and fill it with clear water, following the
instructions reported on this manual.
−
Protect cable ends against humidity.
−
To avoid any damage to the electric cables, never
bend them with a curving radius than lower 6 times
their diameter.
−
Protect against direct sunlight the pump/ motor
group, the electric cables and, in case the pump will
be stored partially dismantled, the rubber parts and
the thrust bearings.
4.2 Transport
Before transportation, please perform the following
checks:
−
Weight of pump/ motor group.
−
Overall dimensions of pump/ motor group.
−
Suitability of lifting points.
Pumping units and their accessories are packed in
crates suited for transportation to avoid any damage on
the way.
However, we recommend to inspect carefully the group
at delivery.
The pump should be handled with equipment suited to
its weight and to the shape of its crate (see side
pictures). Lifting by hand is allowed only for weights
lower than 20 kilograms.
