Flotec SCM 4 PLUS 75/52 Manual De Uso Y Manutención página 7

WARNING
WARNING
MAX. TEMPERATURE OF PUMPED LIQUID
MAX. FREE PASSAGE
MAXIMUM SAND QUANTITY
MAX.ON/OFF CYCLES/HOUR
MINIMUM WELL DIAMETER
MAX. IMMERSION DEPTH
CH. 4 - MOTOR ASSEMBLY (see fig. 1)
DANGER
Risk of electric
shock
SCM 4 PLUS® pumps are designed to be coupled with 4" motors.
Perform the following operations to guarantee a correct coupling:
- remove the raceway that protects the cable and the sand-protection filter
- manually check the rotation of the motor shaft and the hydraulic unit
- verify that the coupling and the coupling axis are clean
- join the pump body and the motor, verifying that the electric cable is correctly positioned next to grooves on the
hydraulic unit supports
- tighten the nuts on the 4 motor tie rods, alternatively on the diagonals
- position the electric cable along the pump and reassemble the protection raceway by tightening the screws to the
hydraulic unit
- fix the sand protection filter to the lower support of the hydraulic unit body by using the screws provided for this
purpose
CH. 5 - ELECTRIC PUMP INSTALLATION (see fig. 2)
DANGER
Risk of electric
shock
DANGER
Risk of electric
shock
DANGER
Risk of electric
shock
DANGER
Risk of bursting
DANGER
Risk of bursting
WARNING
Electric pump cannot be used to move
inflammable or dangerous liquids.
Ensure electric pump never runs dry
30° C
3 mm
50 g/m 3
20 equally distributed
100 mm
150 m
When installing, please ensure unit is
disconnected from electrical supply.
When installing, please ensure pump is disconnected
from electrical supply.
Never use the electric cable to support the electric pump.
Be careful not to damage the electric cable when lowering
it into the well.
This type of pump can develop high pressure. If a
collection tank or expansion tank 15 is to be installed, it
is advisable to install a pressure limiter valve 16 between
the tank and the pump.
All of the pipes and installation parts must have a
maximum working pressure which is greater or equal to
the maximum pressure of the pump, if this is not possible
it is necessary to use a pressure reducer.
Protect the electric pump and all pipes from freezing.
GB GB
Before installing the hydraulic unit inside the well, it is necessary to remove all the sand, in accordance with the
ordinary procedures adopted for perforators.
SCM 4 PLUS ® pumps should never be used without pumping liquid, because the bearings are lubricated by the liquid
itself. The pump can suffer severe damage if it is operated in dry conditions, even for short interval of time. The unit
has to be positioned on the bottom of the well and slightly raised by approximately 1-2 m, to prevent the sand
surrounding the motor and the pump and overheating the former and wearing the rotating parts of the latter.
Before lowering the pump into the well, make sure that the supply cable have been correctly tightened to the fittings
on the control panel and that the protection relays are suited to the absorption indicated on the nameplate. At this
point, disconnect the unit and start lowering it into the well. All lowering operations should be performed using
stainless steel or nylon ropes and the slots provided on the head of the pump.
Connect the first pipe section to the drain mouth of the pump after fixing the two halves of the supporting rod to the
end of the pipe. If threaded pipes are provided, apply the threaded sleeve to the upper end to avoid it sliding between
the pipe and the rod. Use a hoist to lower the whole unit into the well. Carefully control the free end of the cable to
prevent it falling into the well. Connect the second section of the pipe, that is coupled to the upper supporting rod,
remove the previous rod and lower the whole unit into the well. Repeat this operation until the desired project depth
has been reached. Take into account that the machine must be positioned at 1-2 m below the dynamic level or, at any
rate, at a depth that meets the pump NPSH. Before positioning the pump, it is necessary to take into account the
lowering of the water level, that can originate from seasonal factors or from an excessive stratum extraction. The well
level should never fall below the suction chamber to avoid gripping the guide bushings and overheating the motor. The
power cable should be fixed with straps every 2-3 m of pipe. Cables should be safely anchored to the riser to prevent
lowering caused by weight. These movements could cause deformations owed to the striking against the walls of the
well and ruptures of the cables.
If the riser is formed by threaded tube sections, it is necessary to tighten the latter to prevent them coming loose due
to the machine reaction torque.
CH. 6 - ELECTRIC CONNECTION
Electric connections must be carried out by skilled staff only, in accordance with the manufacturer's instructions
enclosed to the electric equipment and the motor. It is advisable to install a protection device upstream, of adequate
dimensions (in accordance with the current values indicated on the nameplate) to prevent voltage peaks and overloads.
Cables should be selected in function of the absorption in Ampere, indicated on the nameplate. Cables should be
dimensioned in accordance to the power to transmit, of the distance from the control page and the starting system of
the submersed motor. Cables should guarantee a submersed operation, have waterproof joints and show no signs of
abrasions or holes.
The control board should be equipped with all the protection devices and equipment to manage and drive the hydraulic
unit. More specifically, it is necessary to guarantee a protection against overcurrent and short circuits. Protections
against the loss of phases, the lowering of voltage and the lack of water in the well are recommended but not compulsory.
7 8
Ensure tension and frequency of pump (read plate) and
WARNING
power supply are same.
DANGER Installer must make sure that electric current network
Electric shock has ground wire conforming to current laws.
risk
DANGER Make sure that electric current network is provided with
Electric shock
a high-sensitivity circuit breaker
risk
0100T739)
Before connecting the power supply cord to the clamps
WARNING
on the command panel, make sure that the cord is able
to withstand the nominal current of the unit.
=30 mA (DIN VDE
D D D D D