DAB NOVA UP 180MA, Instruction For Installation And Maintenance

Page: 26 / 184

ENGLISH
GB
24
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 protec-
tion fuses.
C. The switch is not
activated by the
ÀRDW
B. If burnt out,
change them.
C. - Check that the
ÀRDWFDQPRYH
freely.
- Increase the
depth of the
trap
2 The pump does not
deliver
A. The suction grid
or the pipes are
blocked
B. The impeller is
worn or blocked.
C. The head required
is higher than the
pump’s characte-
ristics
A. Remove the
obstructions.
B. Replace the im-
peller or remove
the obstruction.
3 The pump
does not stop.
A. The switch is not
deactivated by the
ÀRDW
A. Check that the
ÀRDWFDQPRYH
freely.
FAULTS
CHECKS
(possible causes)
REMEDIES
4
7KHÀRZUDWHLV
LQVXI¿FLHQW
A- Check that the
suction grid is not
partially blocked
Check that the impel-
ler or the delivery
pipe are not partly
blocked or encru-
sted.
C. Ensure that the
check valve (if
contemplated)
is not partially
blocked
A. Remove any
obstructions.
B. Remove any
obstructions.
c. Accurately clean
the check valve
5
The pump
stops after
having run for
a short time
A. The thermal over-
load protection
device stops the
pump.
A. Check that
WKHÀXLGWREH
pumped is not
too dense as
it would cause
overheating of
the motor.
Check that the
water tempera-
ture is not too
high.