Umbra Pompe SP Serie Manual De Instrucciones página 8

TROUBLESHOOTING
FAUL
1. The motor does
not start and makes
no noise.
2. The motor does
not start but makes
noise.
3. The motor turns
with difficulty.
4. The pump does
not deliver.
5. The pump does
not prime.
6. The pump
supplies insufficient
flow.
7. The pump
vibrates and operates
noisily.
CHECKS (possible cause)
A. Check the electric connections.
B. Check that the motor is live.
C. Check the protection fuses.
A. Ensure that the mains voltage is the
same as the value on the plate.
B. Ensure that the connections have
been made correctly.
C. Check that all the phases are
present on the terminal board. (3~)
D. Look for possible blockages in the
pump or motor.
E. Check the condition of the capacitor.
A. Check the
may be insufficient.
B. Check whether any moving parts
are scraping against fixed parts.
A. The pump has not been primed
correctly.
B. On three-phase motors, check
that the direction of rotation is correct.
C. The diameter of the intake
pipe is insufficient.
D. Blocked foot valve.
A. The intake pipe or the foot valve is
taking in air.
B. The downward slope of the intake
pipe favours the formation of air pockets.
A. Blocked foot valve.
B. The impeller is worn or blocked.
C. The diameter of the intake
pipe is insufficient.
D. On three-phase motors, check that
the direction of rotation is correct.
A. Check that the pump and the pipes
are firmly anchored.
B. There is cavitation in the pump, that
is the demand for water is higher than it
is able to pump.
C. The pump is running above its plate
characteristics.
voltage which
REMEDY
C. If they are burnt-out, change them.
N.B. If the fault is repeated immediately
this means that the motor is short
circuiting.
B. Correct any errors.
C. If not, restore the missing phase.
D. Remove the blockage.
E. Replace the capacitor.
B. Eliminate the cause of the scraping.
B. If necessary, invert the connection of
two supply wires
C. Replace the pipe with one with a
larger diameter.
D. Clean the foot valve.
A. Eliminate the phenomenon and
prime again.
B. Correct the inclination of the intake
pipe.
A. Clean the foot valve.
B. Remove the obstructions or replace
the worn parts.
C. Replace the pipe with one with a
larger diameter.
D. If necessary, invert the connection of
two supply wires.
A. Fix the loose parts more carefully.
B. Reduce the intake height or
check for load losses.
C. It may be useful to limit the flow
at delivery.
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