Cleaning The Suction Filter; Cleaning The Nrv; Troubleshooting - Tallas D-EBOOST 850 Instrucciones De Instalación Y Mantenimiento

11.1 Cleaning the suction filter

Fig.3
 Switch off the electric power supply to the pump.
 Drain the pump, opening the drainage cap
(6), after having first closed the gate valves
upstream (if present).
 Unscrew the cover of the filter chamber, with
your hands or with the appropriate tool
provided.
 Extract the filter unit from the top.
 Rinse the cup under running water and clean
the filter with a soft brush.
 Reassemble
operations in inverse order.

12. TROUBLESHOOTING

Before taking any troubleshooting action, disconnect the pump from the power supply (i.e. remove
the plug from the socket). If there is any damage to the power cable or pump, any necessary repairs
or replacements must be performed by the manufacturer or his authorized customer support service,
or by an equally-qualified party, in order to prevent all risks.
FAULT
The motor does not
1.
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 vibrates
and operates noisily.
the filter, performing
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. 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

11.2 Cleaning the NRV

(Fig.4)
 Switch off the electric power supply to the pump.
 Remove the cap of the NRV (5) with the accessory
provided.
 Remove the NRV check valve and clean it to remove
any dirt fig.9.
 Assemble the parts, proceeding in inverse order to
disassembly.
the
of thermal
8
REMEDY
C. If they are burnt-out, change them.
D. Wait about 20 min until the motor cools.
Check and eliminate the cause.
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. 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.