PYD Electrobombas VERTINOX Serie Manual De Instalación Y Mantenimiento página 34

OPERATING AND MAINTENANCE MANUAL
VERTICAL ELECTRIC PUMP VERTINOX SERIES
14. PROBLEM SOLVING
Before removing the junction box cover and before disassembling or removing any part of the pump,
make sure that the power is switched off and that it cannot be switched on accidentally.
FAILURE
Motor does not run
The overload protection
trips immediately when
the power is switched on
the power is switched on
Overload protection
tripped occasionally
Overload protection has
not tripped, but pump
does not run pump does
not run
The pumped flow is not is
not constant
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POSSIBLE CAUSES
- Power failure
- Fuses blown
- Overload protection tripped
- Thermal protection tripped
- Motor starter connections do not make
contact
- The electrical panel is damaged
- Motor is damaged
- A blown fuse
- Motor protection contacts
are damaged
- Faulty cable connections
- Motor winding damaged
- Pump mechanically blocked
- Protection set too low
- Protection set too low
- Voltage drop at peak times
- Power failure
- Fuses blown
- Thermal protection has tripped
- Motor connections do not make contact or
are defective
- The electrical panel is defective
- Low pressure at pump inlet
(cavitation)
- Suction partially blocked
- Pump is rotating in air
- Switch on power
- Replace fuses
- Replace motor protection
- Reset thermal protection
- Check contacts
- Repair the electrical panel
- Replace the motor
- Replace fuse
- Replace the motor protection
contacts.
- Check wiring
- Replace motor
- Remove object blocking the pump
- Establish proper protection
- Establish adequate protection
- Check the power source
- Connect the power supply
- Replace fuses
- Replace thermal protection
- Replace faulty connections
- Repair the electrical panel
- Check suction conditions
- Clean suction tube
- Check suction conditions
34
SOLUCIONES