ELETTROPOMPE
®
10
Electrical connection:
after verifying the data indicated on the plate, connect the terminals of the motor following the
schemes indicated in fig.3, according to the tension and to the number of phases of the feeder line. Connect the earth-
ing cable.
Setting protection devices:
Set the thermal cutout relay on the appliance so that it corresponds to the nominal current
value for the motor and then start it up. Using an ammeter, check absorption on all three phases; the value should be
uniform (maximum tolerated unbalance 8%) and below the current specified on the motor’s specifications plate. Reduce
the setting of the thermal cutout relay slowly until this is tripped. Increase the setting of the relay by 5% and start up the
motor again; if the relay is tripped, it must be increased by a further 5%, otherwise leave it as set.
After a period of time sufficient in order to reach the steady state, it shall be necessary to verify the following
conditions:
lack of vibrations or of anomalous noises; lack of changes in the delivery; value of
the absorbed current by
the motor not higher than the one indicated on the plate. In presence of one (or
more) of the above mentioned conditions,
it shall be necessary to stop the pump and to find the cause.
7.
MAINTENANCE
Routine maintenance is not required for SAER submersible motors. In case extraordinary maintenance is required, get
in touch with the SAER Technical Assistance. Do not modify the product without the necessary preventive authorization.
Before executing any operation, turn off the power and prevent it from being reconnected.
The replacement of the feeding cable must be done by an authorised distributor.
8.
DECOMISSIONING AND DISPOSAL
At the end of the operating life of the motor or any of its parts, it must be disposed of in observance of current regula-
tions. This also applies to the liquid contents, with particular regard if classified toxic or harmful, and for the packaging.
Refer to the informations about the disposal in accordance with the WEEE Directive 2012/19 / EU given in this manual.
9.
FAILURES, CAUSES AND REMEDIES
Malfunction or fault
Probable cause
Action
The motor will not start
There is no voltage at the motor’s cable
Control the appliance and /or the electric line
Fuses are burnt out
Replace the fuses
Break in the motor’ s cable
Repair or replace the cable
The thermal relay has
tripped, absorption is
normal
The relay has not be set correctly
Repeat the setting of the relay again
Faulty thermal relay
Replace the relay
The thermal relay has
tripped, absorption is
high
Change the supply voltage or the motor
Change the supply voltage or the motor
Loose cable terminals
Tighten all the terminals
The pump or the motor are blocked
Remove and repair
Excessive quantity of sand in the water
Reduce pump delivery by adjusting the gate
valve
The thermal relay has
tripped, absorption is
unbalanced
Voltage is not the same on all 3 phases
Control the appliance and /or the electric line
A cable is earthed
Repair or replace the cable
The coil is earthed
Replace the motor
The pump or the motor are blocked
Dismantle and repair
Incorrect connection of the motor
Control connections
Lower head than de-
clared value
Incorrect rotation direction.
Invert the rotation direction
Leaks in the delivery pipe system
Replace the pipe or the seal
Worn parts inside the pump
Dismantle the pump and service.
Air and gas in the water
Contact the manufacturer
The unit vibrates
Worn mechanical parts
Dismount the pump and check
The NPSH of the system is insufficient
Reduce the water flow
Reduce the share of installation of the pump
If the problem found involves areas not listed in the table, please contact our customer care department.
- Translation of the original instructions
Keep the manual for future reference - For more informations visit www.saerelettropompe.com
