Prior to lowering of the pump into a new well, a user should ensure that the well
company that manufactured the well performed its purification by pumping out water.
On well construction the water inside the casing pipe and filter is contaminated with
sludge and sand.
Pumping water with sand contamination significantly shortens the life of borehole pumps.
ELECTRIC CONNECTION:
The electric network used to power the pump must be compliant with data provided on the
rating plate.
The pump must be connected to a network with active earthing.
The manufacturer and guarantor are not liable for any damage to people or property resulting
from lack of proper earthing.
The yellow-green core of the connection cable is earthing.
The powering network must be equipped with an installation, overcurrent motor circuit
breaker in e.g. M611, securing the motor against overload. In order to provide maximum
overload protection for the motor, the switch must be set to maximum coil current provided
on the rating plate.
The device can operate without this protection, but in case of a failure caused by overload,
the repair costs are incurred by the user.
The powering installation of the pump must be equipped with a residual
current device, with rated making current
ΔI
n
not exceeding 30 mA. The
manufacturer and guarantor are not liable for any damage to people or
property resulting from supplying the pump with power without a proper
switch.
It is forbidden that there are present people or animals in the water where the
pump works.
In case of cable insulation destruction, the pump use is forbidden. In such a case, it
is necessary to contact the guarantor with the purpose of cable replacement.
Mechanical damages are not subject to warranty repairs that are free of charge.
The use of the pump with damaged cable insulation, in the best case scenario, will
lead to motor flooding with water, whereas, in the worst case scenario, it can result
in electrocution.
Prior to pump launch, the voltage at the end of the cable must be checked. It must be
remembered that the longer the cable, the lower the supply voltage at its end. Admissible
voltage drops for applied motors are ±6%.
In order to avoid excessive drop in voltage, the length of the cable must be properly selected
depending on the type of power supply (one or three-phase), motor power, cable length. The
table below facilitates the proper selection of the cable:
4
While setting the pressure switch and selecting the hydrophoric tank, the following rule
must be observed: the pump motor cannot be switched on more than 30 times an hour.
More frequent switching on can lead to motor overload and failure, or pump failure.
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