94
CLP
OPERATOR’S MANUAL
#96-6294 • Revised 7/04
PROBLEM
POSSIBLE CAUSE
SOLUTION
THE PUMP DOES
NOT WORK (THE
MOTOR DOES NOT
TURN OVER)
No electric power
Check the contactor on the electric line.
Plug not inserted
Check power connection to the line.
Automatic switch has tripped
Reset the switch and check the cause.
Float blocked
Check that the float reaches ON level.
Impeller blocked
Check cause of blockage.
Thermal protection has tripped (single
phase)
This resets automatically (single-phase only).
Protection fuses are burnt out (three
phase)
Replace the fuses with others of the same
type.
Faulty motor or capacitor
Contact the nearest distributor.
Hole in the intake cover is blocked
Clean the hole.
No-return valve blocked
Clean the valve and check its operation.
THE PUMP WORKS
AT A LOW FLOW
RATE
Dirty impeller
Clean them.
No-return valve blocked
Clean the valve and check its operation.
Water level too low
Switch off the pump.
Wrong direction of rotation
Check the direction of rotation (three-phase
only).
Wrong voltage
Supply the pump with the correct voltage
indicated on the data pump.
THE PUMP STOPS
AFTER BRIEF
PERIODS OF
OPERATION
(TRIPPING OF
THERMAL
PROTECTION)
Impeller blocked by foreign bodies
Remove the foreign bodies.
Liquid temperature too high
The temperature exceeds technical limits of
pump.
Internal defect
Contact the nearest distributor.
TROUBLESHOOTING - EBARA SUMP PUMP
