PYD Electrobombas CX Serie Manual De Instalación Y Mantenimiento página 19

OPERATING AND MAINTENANCE MANUAL
SERIE CX
FALLO
Motor starter has
not
tripped out but the
pump does not run.
Pump capacity not
constant
Pump runs but gives
no water
Pump runs back-
wards when swit-
ched off
Leakage in shaft
seal
Noise
If at any time in the future you should need to dispose of this product or
any part of this product, please note that waste electrical products, bat-
teries or cables should not be disposed of with household waste. Please
recycle where facilities exist, please check with your local authority for
recycling advice.
The abandonment or uncontrolled disposal of waste can cause harm
to environment and human health. So, by recycling this product in a res-
ponsible manner, you contribute to the preservation of natural resources
and to the protection of human health.
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POSIBLES CAUSAS
- Supply failure.
- Fuses are blown.
- Thermal protection has tripped
out.
- Main contacts in motor starter are
not making contact or the coil is
faulty
- Control circuit is defective.
- Pump inlet pressure is too low
(cavitation).
- Suction pipe/pump partly blocked
by impurities.
- Pump draws in air.
- Suction pipe/pump blocked by
impurities.
- Foot or non-return valve blocked in
closed position.
- Leakage in suction pipe.
- Air in suction pipe or pump.
- Motor rotates in the wrong direc-
tion.
- Leakage in suction pipe.
- Foot or non-return valve is defec-
tive.
- Shaft seal is defective.
- Cavitation occurs in the pump.
- Pump does not rotate freely(fric-
tional resistance) because of the
incorrect pump shaft position
- System head and pump head ratio
too low.
- Frequency converter not run.
- Connect the electricity supply.
- Replace fuses.
- Reactivate the thermal protec-
tion.
- Replace contacts or magnetic
coil.
- Repair the control circuit.
- Check the Suction conditions.
- Clean the pump or the pump
pipe.
- Check the suction conditions.
- Clean the pump or suction pipe.
- Repair the foot or non-return
valve.
- Repair the suction pipe.
- Check the suction conditions.
- Change the direction of rotation
of the motor.
- Repair the suction pipe.
- Repair the foot or non-return
valve.
- Replace the shaft seal.
- Check the suction conditions.
- Adjust the pump shaft.
- Improve system or choose a
right pump.
- Check the frequency converter
operation.
19
SOLUCIÓN