10.1 Cleaning the suction grid
(Fig.7)
10.2 Cleaning the impeller
(Fig.8)
• Switch off the electric power supply to the pump.
• Drain the pump.
• Unscrew the retaining screws on the filter
(b).
• Remove the suction grid
(c)
• Clean and reassemble the suction grid.
•
Switch off the electric power supply to the pump.
•
Drain the pump.
•
Unscrew the retaining screws on the filter
(b).
•
Remove the suction grid
(c)
•
Wash the pump with clean water to remove possible
impurities between the motor and the pump jacket.
(d).
•
Clean the impeller
(d).
•
Check that the impeller can turn freely.
•
Assemble the parts, proceeding in inverse order to
disassembly.
11. 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.
FAULTS
CHECKS (possible causes)
REMEDIES
1
The motor
A.
Check that voltage is reaching the motor.
A. Verify that the plug is properly inserted
does not start
B. Check the protection fuses.
and does not
C. The switch is not activated by the float.
B. If burnt out, change them.
make any
noise.
- lf bumt out, change them. Place it facing
up.
- Increase the depth of the trap.
The pump does
A.
The suction grid or the pipes are blocked.
A.
Remove the obstructions or straighten
2
not deliver flow
B. The impeller is worn or blocked.
the hose if it is twisted.
C. The head required is higher than the pump's
B. Replace the impeller or remove the
obstruction.
characteristics.
C. Replace it with one with a higher head.
D.
Presence of air
D. Wait at least 1 minute until it is
eliminated
3
The pump does
A.
The switch is not deactivated by the float
A.
Check that the float can move freely.
not stop.
4
The flow rate is
A.
Check that the suction grid is not partially
A.
Remove any obstructions.
insufficient
blocked
B. Remove any obstructions.
B. Check that the impeller or the delivery pipe
C. Accurately clean the check valve
are not partly blocked or encrusted.
C. Ensure that the check valve (if contemplated)
is not partially blocked
5
The pump stops
A.
The thermal overload protection device stops
A.
Check that the fluid to be pumped is not
after having run
the pump.
too dense as it would cause overheating
for a short time.
of the motor.
B. Check that the water temperature is not
too high.
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