PYD Electrobombas NW Serie Manual De Instalación Y Mantenimiento página 13

MANUAL DE INSTALACIÓN Y MANTENIMIENTO
NW 50 Hz
Capacity lower than speci-
fied.
High pump consumption
Abnormal noise inside the
pump.
Pump not primed.
Overloaded bearings.
Vibration
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Pump clogged.
Wear ring worn.
Packaging too tight.
Filling box too hot.
Worn impeller.
Flow rate too large
at which the pump is
working.
Flow too high.
Resistance in inlet pipe
too high.
Suction lift too high.
Air leakage in inlet pipe.
Liquid temperature too
high.
Lack of lubricant or
lubricant too dirty.
Pump shaft not aligned
with motor shaft.
Bearing wear.
Pump shaft not aligned
with motor.
13
Clean the pump and pipes.
Replace wear ring.
Loosen the packing from
the stuffing box.
Replace the impeller.
Lower the discharge valve
to reduce the flow.
Discharge valve.
Reduce flow.
Solve leakage.
Low liquid temperature.
Fill with oil or grease.
Align coupling centre line.
Replace coupling.
Align coupling centre line.