Problem
Pump suction is
weak
Pump suction too
strong
Pump making
strange noises
Nature Sense:
The display shows
symbol
+
First Choice
:
Symbol X is lit in
the display
Reason
Low battery power
Suction strength is set too low Increase the suction strength until you
Silicone cushion incorrectly
positioned and not properly
flush with the breast shield
No vacuum can be built up
Filter blocked
Filter is wet
Suction strength is set too high Reduce suction strength (see "Setting the
Lip valve unable to cope with
milk flow volume
Milk has entered the tube
Inadequate power supply: Not
enough current supplied
through mains adapter or USB
power source
Check whether battery power is sufficient
"7.3 Battery operation (Nature Sense
(see
model only)"
achieve the best results (see "Setting the
suction strength" on page 33).
Ensure that the silicone cushion is
completely flush with the breast shield
Ensure that the breast shield is
completely flush with the breast
Clean or replace filter (see
cleaning of tube and filter"
Remove filter and allow more time to dry
or use dry replacement filter (see
"5.3 Special cleaning of tube and filter"
on page 30).
suction strength" on page 33).
Reduce suction strength (see "Setting the
suction strength" on page 33). If you have
a high milk flow volume, a low suction
strength will be perfectly adequate to
achieve good results.
Check whether the breast milk level has
already reached the lip valve. If so,
replace the breast milk container with an
empty one.
Immediately switch off the pump unit and
clean the tube and the filter (see
"5.3 Special cleaning of tube and filter"
on page 30).
Mains power operation:
Check that the
plugged into the power supply socket
and the USB connector is firmly pushed
into the port on the pump unit.
Check that you are using the correct
mains adapter included in the NUK
packaging.
When using a USB power source: Ensure
that the USB power source used can
deliver at least 2 amperes of current. If
the USB power source is too weak, it
cannot be used.
38
Remedy
on page 32).
"5.3 Special
on page 30).
mains adapter
is properly