DAB NOVA UP MAE Serie Instrucciones Para La Instalación Y El Mantenimiento página 12

12. TROUBLESHOOTING
FAULTS
The motor does not start
and does not make any
noise.
The pump does not deliver.
The pump does not stop.
The flow rate is insufficient.
The pump stops after having
run for a short time.
CHECKS (possible causes)
A. Check that voltage is reaching the motor.
B. Check the protection fuses.
C. The switch is not activated by the sensor.
A. The suction grid or the pipes are blocked.
B. The impeller is worn or blocked.
C. The head required is higher than the pump's characteristics.
A. The switch is not deactivated by the sensors.
A. Check that the suction grid is not partially blocked.
B. Check that the impeller or the delivery pipe are not partly
blocked or encrusted.
C. Ensure that the check valve (if contemplated) is not partially
blocked.
A. The thermal overload protection device stops the pump.
ENGLISH
5
REMEDIES
B. If burnt out, change them.
C. - Check that the probes are not clogged by
dirt.
- Increase the depth of the trap.
A. Remove the obstructions.
B. Replace the impeller or remove the
obstruction.
A. Check that the probes are not clogged by dirt.
A. Remove any obstructions.
B. Remove any obstructions.
C. Accurately clean the check valve.
A. Check that the fluid to be pumped is not too
dense as it would cause overheating of the
motor.
Check that the water temperature is not too
high.
Check that the probes are not clogged by dirt.