PYD Electrobombas MSI6 Serie Manuel D'installation Et D'entretien page 20

MANUAL DE INSTALACIÓN Y MANTENIMIENTO
SERIE MSI6
TROUBLE SHOOTING
Pump Set Operational
Problems
Less Discharge
The pump refuses to deliver
water
Excessive consumption of
current
Pump runs roughly / is noisy /
vibrates too much
Low total head
Pump does not operate
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Probable Cause
Less Voltage
Incorrect direction of rotation
Low frequency
Power is not available
Fuse is defective
Low voltage supply resulting
in lesser speed
Pump motor coupling is
damaged
Defective motor winding,
cable and starters
Voltage too low
Fuse is defective
Defective rotor
High frequency of supply
resulting in high motor speed
Winding insulation inadequate Change the winding
Loose connection in line
Defective thrust bearing of
motor and wrong alignment in
coupling
Low supply voltage
Absence of power supply or
low voltage
Rotor has seized owing to
prolonged shutdown
Defective fuse or panel board
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Precautions and Solutions
Check all connections if
the voltage is found to be
consistently low, fit a booster
Interchange the supply
connections of any two
phases
Re check the voltage and
frequency
Check the line
Check line fuses
Install a booster to improve
voltage
Take out the pump set and
repair damaged couplings
Check all parameters
Check voltage
Check line fuses
Change the rotor
Check the frequency
Check the connection input
supply
Change defective parts and
couple the motor and pump
as per instruction
Check the voltage
Check the power supply
Check the panel board and
fuser property
Check the panel board and
fuser property