ENGLISH
15
12.
TROUBLESHOOTING
FAULTS
CHECKS
(possible causes)
REMEDIES
1.
The motor does not
start and does not
make any noise.
A.
Check that voltage is reaching the
motor.
B.
Check the protection fuses.
B.
If burnt out, change them.
2.
The aerator is not
distributing.
A.
The suction pipe or the pipes are
blocked.
B.
The impeller is worn or blocked.
C.
The installation depth is greater than
the characteristics of the aerator.
A.
Remove the obstructions.
B.
Replace the impeller or remove the
obstruction.
C.
Reduce the aerator depth.
3.
Reduced air input
A.
Check that the impeller or the suction
tube are not partly blocked or
encrusted.
B.
Check that the impeller is not
touching the body.
C.
Check for the presence of solid
bodies between impeller and body.
D.
Impeller damaged or worn.
A.
Remove any obstructions.
B.
Check that the impeller nut is
correctly fixed.
C.
Unscrew the fixing nut and remove
the impeller from the shaft.
Accurately clean the components and
reassemble them.
D.
Change the impeller.
4.
The aerator stops
after having
operated for a short
time.
A.
The thermal overload protection
device stops the motor.
A.
Check that the fluid is not too dense
as it would cause overheating of the
motor.
- Check that the fluid temperature is
not too high.
- Check that the product has been
correctly installed; minimum
immersion 20 cm.
