Tallas Pumps P1-720 W Instrucciones De Instalación Y Mantenimiento página 8

FAULT
1.
The motor does not
start and makes no
noise.
1. 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 is
activated and
deactivated too
frequently
8. 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.
D. Possible intervention
protection
A. Ensure that the mains voltage is the
same as the value on the plate.
B. Look for possible blockages in the pump
or motor.
C. Check that the shaft is not blocked.
D. Check the condition of the capacitor.
A. Check the voltage which may be
insufficient.
B. Check whether any moving parts are
scraping against fixed parts.
A. The pump has not been primed
correctly.
B. The diameter of the intake pipe is
insufficient.
C. NRV non-return valve or filter clogged.
A. Suction pipe is taking in air.
B. The downward slope of the intake pipe
favours the formation of air pockets.
A. The suction pipe is clogged.
B. The impeller is worn or blocked.
C. The diameter of the intake pipe is
insufficient.
A. Damaged diaphragm of the expansion
vessel
B. The expansion vessel pressure is too
low
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.
ENGLISH
C. If they are burnt-out, change them.
D. Wait about 20 min until the motor cools.
Check and eliminate the cause.
of thermal N.B.: If the fault is repeated immediately this
means that the motor is short circuiting.
B. Remove the blockage
C. Use the tool provided to release the
shaft.
D. Replace the capacitor
B. Eliminate the cause of the scraping.
A. Fill the pump with water and prime it,
taking care to let air out by unscrewing
the vent cap.
B. Replace the pipe with one with a larger
diameter.
C. Clean the filter and, if this is not sufficient,
the NRV.
A. Eliminate the phenomenon, checking
that the connections and the suction pipe
are airtight, and repeat the priming
operation.
B. Correct the inclination of the intake pipe.
A. Clean the suction pipe..
B. Remove the obstructions or replace the
worn parts.
C. Replace the pipe with one with a larger
diameter.
A. Have the diaphragm replaced by an
authorised service technician.
B. Load the expansion vessel to 1.6 +-0.2
bar.
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.
5
REMEDY