14
INCONVENIENCES, CAUSES AND REMEDIES
PROBLEMS
CAUSES
REMEDIES
No voltage in the motor cable.
The fuses are burnt out.
Motor cable interrupted.
Motor broken.
Check the device and/or electric line.
Replace the fuses with others of the same value.
Repair or replace the cable.
Replace the motor.
The motor doesn’t start
The thermic relay starts, absorption is normal
The thermic relay is not correctly calibrated.
Faulty thermic relay.
The thermic relay is not correctly calibrated.
Replace the relay.
The thernic relay starts, absorption is high
The tension is too high or too low.
The cable clamps are loose.
The pump or the motor are jammed.
Too much sand in the water.
Ask the electricity supplier.
Tighten all the terminals.
Disassemble and repair.
Reduce the delivery of the pump by adjusting the
gate valve.
The thermic relay starts, absorption is not balanced.
The tension is not the same on all the 3 phase.
One cable is to earth.
The coil-winding is to earth.
The pump or the motor are jammed.
The connection of the motor is not correct.
Check the appliance and the line.
Repair or replace the cable.
Disassemble the motor and rewind it.
Disassemble and overhaul it.
Check the connection.
Head lower than the declared one
Wrong direction of rotation.
Leaks in delivery pipe.
Worn internal parts.
Air or gas in the water.
Reverse the direction of rotation.
Replace the pipe or gasket.
Dismantle and overhaul.
Call the manufacturer.
Impellers clogged.
The level into the well becomes too low than usual.
Dismantle and overhaul.
Check the capacity of the well.
Delivery inadequate
The pump operates at too low a head.
The water level is too close to the inlet.
Regulate the gate valve on the delivery pipe.
Reduce the rate of flow.
Lower the installation depth of the pump.
The functioning of the group is irregular
The group vibrates.
Mechanical parts worn out.
The NPSH of the system is insufficient.
Dismantle and overhaul.
Reduce the rate of flow.
Lower the installation depth of the pump.
If the problem involves situations not listed in the above table, contact our Customer Service.
